/* Fontes self-hosted (CSP: style-src/font-src 'self') */
@font-face {
  font-family: 'DM Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/web/fonts/dmmono-latin-ext-400.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'DM Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/web/fonts/dmmono-latin-400.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'DM Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/web/fonts/dmmono-latin-ext-500.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'DM Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/web/fonts/dmmono-latin-500.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url('/web/fonts/manrope-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url('/web/fonts/manrope-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ─── Tokens ─────────────────────────────────────────────────────────────── */
:root {
  /* Tema Claro Original (Acolhedor, Limpo, Equilibrado): papel + coral/teal.
     *-rgb servem para tons translúcidos que acompanham o tema:
     rgba(var(--teal-rgb), .12). */
  --ink: #182326;
  --paper: #f4f0e8;
  --card-bg: rgba(255, 255, 255, 0.85);
  --card-solid: #ffffff;
  --option-bg: rgba(255, 255, 255, 0.70);
  --option-hover: #ffffff;
  --option-checked: #dcebe5;
  --coral: #c9462a;                    /* AA: 4,78:1 com texto branco */
  --coral-dark: #a8341b;
  --coral-rgb: 240, 144, 111;          /* coral claro dos brilhos e badges, como antes */
  --coral-glow: rgba(201, 70, 42, 0.22);
  --accent-text: #b23a20;              /* coral para texto sobre papel (≥ 5:1) */
  --teal: #176b67;
  --teal-dark: #0f4e4b;
  --teal-rgb: 23, 107, 103;
  --purple: #7c3aed;
  --orange: #d97706;
  --btn-primary-text: #ffffff;
  --btn-teal-text: #ffffff;
  --btn-orange-text: #ffffff;
  --btn-add-bg: var(--teal);
  --btn-add-border: var(--teal);
  --btn-add-color: #ffffff;
  --btn-add-hover-bg: var(--teal-dark);
  --btn-catalog-bg: var(--teal);
  --btn-catalog-border: var(--teal);
  --btn-catalog-color: #ffffff;
  --btn-catalog-hover-bg: var(--teal-dark);
  --line: #d8d0c3;
  --line-focus: #176b67;
  --muted: #5b635e;                    /* AA: 5,45:1 sobre o papel */
  --success: #1d7a4e;
  --error: #a33b2b;
  --modal-bg: rgba(10, 18, 20, 0.65);
  --bg-gradient: radial-gradient(circle at 80% 5%, #f9cf9d 0 12%, transparent 38%), linear-gradient(135deg, #f4f0e8, #e7efeb);
  --kbd-bg: rgba(24, 35, 38, 0.06);
  --kbd-border: rgba(24, 35, 38, 0.16);
  --kbd-color: var(--ink);
  --input-bg: #ffffff;
  --input-border: #d8d0c3;
  --focus-ring: rgba(23, 107, 103, 0.18);
  --shadow-card: 0 4px 16px rgba(24, 35, 38, 0.06);
}

[data-theme="dark"] {
  /* Tema noturno: paleta da cena "Frosty Gradient" (Unicorn Studio), cinza-preto
     neutro + azul/roxo. Os nomes --coral/--teal ficaram por compatibilidade:
     aqui --coral é o acento primário (azul) e --teal o secundário (roxo). */
  --ink: #d4d4d8;
  --paper: #181818;
  --card-bg: rgba(23, 23, 26, 0.90);
  --card-solid: #1F1F1F;
  --option-bg: rgba(255, 255, 255, 0.04);
  --option-hover: rgba(255, 255, 255, 0.08);
  --option-checked: rgba(124, 92, 240, 0.18);
  --coral: #4359ff;                    /* botões; texto branco por cima (5,1:1) */
  --coral-dark: #3446e6;
  --coral-rgb: 67, 89, 255;
  --coral-glow: rgba(67, 89, 255, 0.35);
  --accent-text: #8b93ff;
  --teal: #a78bfa;
  --teal-dark: #c4b5fd;
  --teal-rgb: 167, 139, 250;
  --purple: #c4b5fd;
  --orange: #f2b866;
  --btn-primary-text: #ffffff;
  --btn-teal-text: #171717;
  --btn-orange-text: #171717;
  --btn-add-bg: rgba(167, 139, 250, 0.12);
  --btn-add-border: rgba(167, 139, 250, 0.40);
  --btn-add-color: var(--teal);
  --btn-add-hover-bg: rgba(167, 139, 250, 0.22);
  --btn-catalog-bg: rgba(67, 89, 255, 0.14);
  --btn-catalog-border: rgba(67, 89, 255, 0.50);
  --btn-catalog-color: #d4d4d8;
  --btn-catalog-hover-bg: rgba(67, 89, 255, 0.26);
  --line: #2e2e35;
  --line-focus: #a78bfa;
  --muted: #9d9da8;
  --success: #6fdc9a;
  --error: #ff8a7a;
  --modal-bg: rgba(8, 8, 10, 0.80);
  --bg-gradient: radial-gradient(circle at 85% 6%, rgba(67, 89, 255, 0.10) 0 16%, transparent 45%), linear-gradient(180deg, #181818 0%, #181818 100%);
  --kbd-bg: rgba(161, 161, 170, 0.14);
  --kbd-border: #3a3a42;
  --kbd-color: #d4d4d8;
  --input-bg: #121214;
  --input-border: #2e2e35;
  --focus-ring: rgba(167, 139, 250, 0.35);
  --shadow-card: 0 6px 20px rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; }

/* Corta estouro lateral sem criar contêiner de rolagem (hidden quebraria position: sticky) */
html, body { overflow-x: clip; }

/* ─── Acessibilidade: Navegação Aprimorada por Teclado e Foco Visível (WCAG 2.1) ─ */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible,
[role="button"]:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--teal) !important;
  outline-offset: 2px !important;
  box-shadow: 0 0 0 3px var(--focus-ring) !important;
}

.option:has(input:focus-visible) {
  border-color: var(--teal) !important;
  box-shadow: 0 0 0 3px var(--focus-ring) !important;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg-gradient);
  font-family: Manrope, sans-serif;
  min-height: 100vh;
  transition: background .3s var(--ease-out), color .2s var(--ease-out);
}

/* ─── Shell / Layout ─────────────────────────────────────────────────────── */
.shell { max-width: 980px; margin: auto; padding: 58px 24px 90px; }

/* ─── Hero ───────────────────────────────────────────────────────────────── */
.hero { border-bottom: 1px solid var(--line); padding-bottom: 32px; }

.hero-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.hero-brand-icon {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  flex-shrink: 0;
  display: inline-block;
  vertical-align: middle;
  box-shadow: 0 2px 8px rgba(var(--coral-rgb), 0.25);
}

.hero-brand .eyebrow {
  margin: 0;
}

.eyebrow {
  color: var(--accent-text);
  font: 500 12px 'DM Mono', monospace;
  text-transform: uppercase;
  margin: 0 0 16px;
}

.hero-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 4px;
}

.quiz-picker {
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
  flex: 1;
  min-width: 240px;
  max-width: 440px;
  box-sizing: border-box;
}

.quiz-picker-label {
  color: var(--muted);
  font: 700 12px 'DM Mono', monospace;
  text-transform: uppercase;
  white-space: nowrap;
  letter-spacing: 0.5px;
}

.custom-select-wrap {
  position: relative;
  flex: 1;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.custom-select-trigger {
  width: 100%;
  max-width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 14px;
  background: var(--input-bg);
  border: 1px solid var(--line);
  color: var(--ink);
  font: 600 14px Manrope, sans-serif;
  border-radius: 4px;
  cursor: pointer;
  text-align: left;
  box-sizing: border-box;
  transition: border-color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.custom-select-trigger:hover,
.custom-select-trigger:focus-visible {
  border-color: var(--teal);
  outline: none;
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.custom-select-trigger[aria-expanded="true"] {
  border-color: var(--teal);
}

.custom-select-value {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.custom-select-arrow {
  color: var(--muted);
  font-size: var(--text-xs);
  transition: transform .2s var(--ease-out);
  flex-shrink: 0;
}

.custom-select-trigger[aria-expanded="true"] .custom-select-arrow {
  transform: rotate(180deg);
  color: var(--teal);
}

.custom-select-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  background: var(--card-solid);
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
  z-index: var(--z-overlay);
  max-height: 280px;
  overflow-y: auto;
  overflow-x: hidden;
}

.custom-select-group {
  border-bottom: 1px solid var(--line);
}
.custom-select-group:last-child {
  border-bottom: none;
}

.custom-select-group-header {
  padding: 8px 12px 4px;
  font: 700 12px 'DM Mono', monospace;
  text-transform: uppercase;
  color: var(--muted);
  letter-spacing: 0.5px;
  background: var(--kbd-bg);
}

.custom-select-option {
  padding: 10px 14px;
  font: 600 12px Manrope, sans-serif;
  color: var(--ink);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  transition: background 0.3s var(--ease-out), color 0.3s var(--ease-out);
}

.custom-select-option:hover {
  background: rgba(var(--teal-rgb), 0.12);
  color: var(--teal);
}

.custom-select-option.is-selected {
  background: rgba(var(--teal-rgb), 0.18);
  color: var(--teal);
  font-weight: 700;
}

.custom-select-option-label {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.custom-select-option-check {
  font-size: 12px;
  color: var(--teal);
  font-weight: 700;
}

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.modal-form-row--spacing {
  margin-top: 16px;
}

select {
  border: 1px solid var(--line);
  background: var(--input-bg);
  color: var(--ink);
  font: 600 14px Manrope, sans-serif;
  padding: 10px 34px 10px 12px;
  border-radius: 4px;
  transition: border-color 0.3s var(--ease-out);
  max-width: 100%;
  box-sizing: border-box;
}
select:focus {
  border-color: var(--teal);
  outline: none;
}
select option,
select optgroup {
  background: var(--card-solid);
  color: var(--ink);
  max-width: 100%;
}

/* ─── Add Quiz Button ────────────────────────────────────────────────────── */
.btn-add-quiz {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--btn-add-bg);
  border: 1px solid var(--btn-add-border);
  color: var(--btn-add-color);
  font: 700 12px Manrope, sans-serif;
  cursor: pointer;
  border-radius: 4px;
  transition: background-color .2s var(--ease-out), border-color .2s var(--ease-out), color .2s var(--ease-out), box-shadow .2s var(--ease-out), transform .2s var(--ease-out), opacity .2s var(--ease-out);
}
.btn-add-quiz:hover {
  background: var(--btn-add-hover-bg);
  border-color: var(--teal);
  color: var(--teal);
  transform: translateY(-1px);
}
.btn-add-quiz:active { transform: translateY(0); }
.btn-add-icon { font-size: 16px; line-height: 1; }

/* ─── Headings ───────────────────────────────────────────────────────────── */
h1 {
  font-size: clamp(48px, 8vw, 90px);
  line-height: .92;
  margin: 20px 0;
  letter-spacing: 0;
}
h1 em { color: var(--teal); font-style: normal; }

.intro { max-width: 540px; color: var(--muted); line-height: 1.6; }

/* ─── Status / Timer ─────────────────────────────────────────────────────── */
.status {
  display: flex;
  justify-content: space-between;
  font: 500 12px 'DM Mono', monospace;
  margin-top: 35px;
  text-transform: uppercase;
}

#timer {
  position: fixed;
  top: 16px; right: 20px;
  z-index: var(--z-timer);
  color: var(--teal);
  background: var(--card-solid);
  border: 1px solid var(--line);
  min-width: 76px;
  padding: 10px 14px;
  text-align: center;
  box-shadow: var(--shadow-card);
  font-variant-numeric: tabular-nums;
  border-radius: 4px;
  cursor: pointer;
  transition: color .2s var(--ease-out), border-color .2s var(--ease-out), transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}
#timer:hover {
  border-color: var(--teal);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
}
#timer.running { color: var(--accent-text); border-color: var(--coral); }
#timer.expired { color: var(--error); border-color: var(--error); }

/* ─── Timer Config (seletor de tempo customizado) ─────────────────────────── */
.timer-wrap {
  /* Apenas um agrupador semântico no .status; o timer real é fixed */
  display: contents;
}

.timer-config {
  position: fixed;
  top: 56px;   /* logo abaixo do #timer (16px + ~40px de altura) */
  right: 20px;
  z-index: var(--z-timer);
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--card-solid);
  border: 1px solid var(--line);
  border-top: none;
  border-radius: 0 0 4px 4px;
  padding: 4px 8px 5px;
  box-shadow: var(--shadow-card);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out);
  transform: translateY(-4px);
}

.timer-config--visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.timer-config-label {
  font-size: 12px;
  color: var(--muted);
  cursor: pointer;
  line-height: 1;
  -webkit-user-select: none;
  user-select: none;
  transition: color 0.3s var(--ease-out);
}
.timer-config-label:hover {
  color: var(--teal);
}

.timer-preset-select {
  border: none;
  background: var(--card-solid);
  color: var(--teal);
  font: 700 12px 'DM Mono', monospace;
  padding: 2px 18px 2px 2px;
  cursor: pointer;
  -webkit-appearance: auto;
  appearance: auto;
  outline: none;
}
.timer-preset-select option {
  background: var(--card-solid);
  color: var(--ink);
}

.timer-preset-select:focus {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
  border-radius: 2px;
}

.progress-track { background: var(--line); height: 6px; margin-top: 10px; border-radius: 3px; overflow: hidden; }
#progressBar { background: var(--coral); height: 100%; transition: width .3s var(--ease-out); width: 0; }

/* ─── Start Button ───────────────────────────────────────────────────────── */
.hero-actions { margin-top: 22px; display: flex; align-items: center; gap: 12px; }
.start-btn {
  gap: 8px;
  font-size: 14px;
  border-radius: 6px;
  height: 46px;
  padding: 0 26px;
  transition: transform 0.3s var(--ease-out), opacity .2s var(--ease-out), background-color 0.3s var(--ease-out);
}
.start-btn:hover { opacity: .92; transform: translateY(-1px); }
.start-btn:active { transform: translateY(0) scale(0.98); }
.start-btn span { font-size: 14px; margin-left: 6px; }
.start-btn.hidden { display: none; }

/* ─── Quiz / Questions ───────────────────────────────────────────────────── */
.quiz { display: grid; gap: 18px; margin-top: 28px; }

.question {
  background: var(--card-bg);
  border: 1px solid var(--line);
  padding: 24px;
  transition: background .2s var(--ease-out), border-color .2s var(--ease-out);
}

.question-head { display: flex; gap: 16px; }
.number { color: var(--accent-text); font: 500 14px 'DM Mono', monospace; }
h2 { font-size: 18px; line-height: 1.45; margin: 0; }
.section { color: var(--teal); font: 500 12px 'DM Mono', monospace; text-transform: uppercase; margin: 0 0 12px 34px; }
.context { color: var(--muted); line-height: 1.55; margin: 0 0 18px 34px; max-width: 760px; }

.options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 9px;
  margin: 20px 0 0 34px;
}

.option {
  border: 1px solid var(--line);
  padding: 13px 15px;
  cursor: pointer;
  display: flex;
  gap: 10px;
  align-items: center;
  line-height: 1.4;
  background: var(--option-bg);
  transition: border-color 0.3s var(--ease-out), background 0.3s var(--ease-out), transform 0.3s var(--ease-out);
  border-radius: 4px;
}
.option:hover { border-color: var(--teal); }
input { accent-color: var(--coral); margin-top: 0; }
.option:has(input:checked) { background: var(--option-checked); border-color: var(--teal); }
.option.option--hotkey-pulse {
  animation: optionPulse .3s ease;
}

@keyframes optionPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.02); }
  100% { transform: scale(1); }
}

/* ─── Actions / Buttons ──────────────────────────────────────────────────── */
.actions { display: flex; gap: 12px; margin: 32px 0; }

button {
  border: 0;
  cursor: pointer;
  font: 700 14px Manrope, sans-serif;
  padding: 0 20px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
}
.primary {
  background: var(--coral);
  color: var(--btn-primary-text);
  border-radius: 6px;
  transition: background 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}
.primary:hover { background: var(--coral-dark); transform: translateY(-1px); }
.primary:active { transform: translateY(0) scale(0.98); }
.primary span { font-size: 18px; margin-left: 10px; }
.secondary {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  border-radius: 6px;
  transition: background 0.3s var(--ease-out), border-color 0.3s var(--ease-out), color 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}
.secondary:hover { background: var(--card-bg); border-color: var(--muted); color: var(--ink); transform: translateY(-1px); }
.secondary:active { transform: translateY(0) scale(0.98); }

/* ─── Result ─────────────────────────────────────────────────────────────── */
.result {
  background: var(--card-bg);
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 30px;
  border-radius: 6px;
  box-shadow: var(--shadow-card);
}
.result h2 { font-size: 24px; color: var(--teal); }
.result p { line-height: 1.6; }
.review { border-top: 1px solid var(--line); padding: 14px 0; }
.review strong { display: block; margin-bottom: 5px; color: var(--ink); }
.wrong { color: var(--error); font-weight: 600; }
.right { color: var(--success); font-weight: 600; }

/* ─── Empty State ────────────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  color: var(--muted);
  font: 500 14px 'DM Mono', monospace;
  padding: 60px 24px;
  border: 2px dashed var(--line);
  margin-top: 28px;
}

/* ─── Modal Overlay ──────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--modal-bg);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  z-index: var(--z-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn .2s ease;
}
.modal-overlay[hidden] { display: none; }

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.modal {
  background: var(--card-solid);
  border: 1px solid var(--line);
  box-shadow: 0 24px 64px rgba(0, 0, 0, .45);
  padding: 36px 40px 32px;
  max-width: 520px;
  width: 100%;
  position: relative;
  animation: slideUp .25s ease;
  border-radius: 6px;
}

@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

.modal-close {
  position: absolute;
  top: 16px; right: 18px;
  background: none;
  border: 0;
  font-size: 20px;
  color: var(--muted);
  cursor: pointer;
  padding: 4px 8px;
  line-height: 1;
  transition: color 0.3s var(--ease-out);
}
.modal-close:hover { color: var(--ink); }

.modal-title {
  font-size: 20px;
  margin: 0 0 6px;
}

.modal-subtitle {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
  margin: 0 0 20px;
}

/* ─── Modal Tabs ─────────────────────────────────────────────────────────── */
.modal-tabs {
  display: flex;
  gap: 8px;
  border-bottom: 2px solid var(--line);
  margin-bottom: 20px;
}

.modal-tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  font: 700 12px 'DM Mono', monospace;
  color: var(--muted);
  cursor: pointer;
  transition: background-color 0.2s var(--ease-out), border-color 0.2s var(--ease-out), color 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out), transform 0.2s var(--ease-out), opacity 0.2s var(--ease-out);
  letter-spacing: 0.3px;
  border-radius: 4px 4px 0 0;
}

.modal-tab-btn:hover {
  color: var(--ink);
  background: rgba(var(--teal-rgb), 0.08);
}

.modal-tab-btn.active {
  color: var(--teal);
  border-bottom-color: var(--teal);
  background: rgba(var(--teal-rgb), 0.12);
}

.modal-panel {
  display: block;
}

.modal-panel[hidden] {
  display: none !important;
}

.modal-form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.modal-form-group label {
  font: 700 12px 'DM Mono', monospace;
  text-transform: uppercase;
  color: var(--ink);
  letter-spacing: 0.5px;
}

.modal-form-group .required {
  color: var(--accent-text);
}

.modal-form-group input,
.modal-form-group select,
.modal-form-group textarea {
  width: 100%;
  padding: 11px 14px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 4px;
  font: 500 14px Manrope, sans-serif;
  color: var(--ink);
  outline: none;
  transition: border-color 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out);
  box-sizing: border-box;
}

.modal-form-group input:focus,
.modal-form-group select:focus,
.modal-form-group textarea:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.modal-form-row {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
}

.modal-form-row .form-group {
  margin-bottom: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.modal-form-row .form-group label {
  font: 700 12px 'DM Mono', monospace;
  text-transform: uppercase;
  color: var(--ink);
  letter-spacing: 0.5px;
}

.modal-form-row .form-group select {
  width: 100%;
  padding: 11px 14px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 4px;
  font: 500 14px Manrope, sans-serif;
  color: var(--ink);
  outline: none;
  box-sizing: border-box;
  transition: border-color 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out);
}

.modal-form-row .form-group select:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.flex-1 {
  flex: 1;
}

/* ─── Drop Zone ──────────────────────────────────────────────────────────── */
.drop-zone {
  border: 2px dashed var(--line);
  background: var(--card-bg);
  padding: 36px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color .2s var(--ease-out), background .2s var(--ease-out);
  border-radius: 4px;
  outline: none;
}
.drop-zone:hover,
.drop-zone:focus,
.drop-zone--active {
  border-color: var(--teal);
  background: rgba(var(--teal-rgb), .08);
}
.drop-zone--error { border-color: var(--error); }

.drop-zone-icon { font-size: 36px; line-height: 1; margin-bottom: 10px; }
.drop-zone-label { font: 700 14px Manrope, sans-serif; margin: 0 0 4px; }
.drop-zone-hint  { color: var(--muted); font-size: 12px; margin: 0 0 8px; }
.drop-zone-types { font: 500 12px 'DM Mono', monospace; color: var(--muted); text-transform: uppercase; margin: 0; }

/* ─── File Preview ───────────────────────────────────────────────────────── */
.file-preview {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--kbd-bg);
  border: 1px solid var(--teal);
  padding: 12px 16px;
  margin-top: 14px;
  border-radius: 4px;
}
.file-preview[hidden] { display: none; }
.file-preview-icon { font-size: 20px; }
.file-preview-name { flex: 1; font: 600 12px Manrope, sans-serif; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-preview-remove {
  background: none;
  border: 0;
  color: var(--muted);
  font-size: 18px;
  cursor: pointer;
  padding: 2px 6px;
  line-height: 1;
  transition: color 0.3s var(--ease-out);
}
.file-preview-remove:hover { color: var(--error); }

/* ─── Upload Status ──────────────────────────────────────────────────────── */
.upload-status {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 14px;
  padding: 14px 16px;
  background: var(--kbd-bg);
  border: 1px solid var(--line);
  border-radius: 4px;
  font: 500 12px Manrope, sans-serif;
  color: var(--teal);
}
.upload-status[hidden] { display: none; }

.upload-spinner {
  width: 18px; height: 18px;
  border: 2.5px solid rgba(var(--teal-rgb), .3);
  border-top-color: var(--teal);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  flex-shrink: 0;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ─── Upload Error / Success ─────────────────────────────────────────────── */
.upload-error {
  margin-top: 12px;
  padding: 12px 16px;
  background: rgba(255, 85, 85, 0.12);
  border: 1px solid rgba(255, 85, 85, 0.35);
  color: var(--error);
  font-size: 12px;
  line-height: 1.5;
  border-radius: 4px;
}
.upload-error[hidden] { display: none; }

.upload-success {
  margin-top: 12px;
  padding: 12px 16px;
  background: rgba(80, 250, 123, 0.12);
  border: 1px solid rgba(80, 250, 123, 0.35);
  color: var(--success);
  font: 600 12px Manrope, sans-serif;
  border-radius: 4px;
}
.upload-success[hidden] { display: none; }

/* ─── Modal Actions ──────────────────────────────────────────────────────── */
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
  flex-wrap: wrap;
}
.modal-actions button { min-width: 110px; }
.modal-actions .primary:disabled {
  opacity: .45;
  cursor: not-allowed;
  transform: none !important;
}

/* ─── Auth Controls & User Profile Badge ─────────────────────────────────── */
.hero-top-buttons {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.auth-controls {
  display: flex;
  align-items: center;
}

.btn-auth-login {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  background: var(--card-bg);
  color: var(--ink);
  border: 1px solid var(--line);
  font: 600 12px Manrope, sans-serif;
  cursor: pointer;
  border-radius: 4px;
  transition: background-color .2s var(--ease-out), border-color .2s var(--ease-out), color .2s var(--ease-out), box-shadow .2s var(--ease-out), transform .2s var(--ease-out), opacity .2s var(--ease-out);
}
.btn-auth-login:hover {
  background: var(--card-solid);
  border-color: var(--teal);
  color: var(--teal);
  transform: translateY(-1px);
}
.btn-auth-icon { font-size: 14px; }

.user-profile-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 20px;
  font: 600 12px Manrope, sans-serif;
}
.user-role-badge {
  font: 700 12px 'DM Mono', monospace;
  padding: 2px 8px;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.role-admin {
  background: var(--coral-glow);
  color: var(--accent-text);
}
.role-student {
  background: rgba(var(--teal-rgb), 0.18);
  color: var(--teal);
}
.role-guest {
  background: rgba(100, 116, 139, 0.18);
  color: var(--muted);
}
.user-name {
  color: var(--ink);
  font-weight: 700;
}
.btn-auth-logout {
  background: transparent;
  border: 0;
  color: var(--muted);
  font: 600 12px Manrope, sans-serif;
  cursor: pointer;
  padding: 2px 4px;
  text-decoration: underline;
  transition: color .2s var(--ease-out);
}
.btn-auth-logout:hover {
  color: var(--error);
}

/* ─── Auth Form (Login Modal) ────────────────────────────────────────────── */
.modal-login {
  max-width: 440px;
}
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 10px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-group label {
  font: 700 12px 'DM Mono', monospace;
  color: var(--muted);
  text-transform: uppercase;
}
.form-group input {
  padding: 12px 14px;
  border: 1px solid var(--input-border);
  border-radius: 4px;
  font: 500 14px Manrope, sans-serif;
  background: var(--input-bg);
  color: var(--ink);
  transition: border-color .2s var(--ease-out), box-shadow .2s var(--ease-out);
}
.form-group input:focus {
  outline: 0;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

/* ─── Dedicated Login Page ────────────────────────────────────────────────── */
.login-body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-gradient);
  color: var(--ink);
  padding: 24px;
}

.login-wrapper {
  width: 100%;
  max-width: 480px;
  margin: auto;
}

.login-card {
  background: var(--card-bg);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 42px 36px 36px;
  box-shadow: var(--shadow-card);
}

.login-header {
  margin-bottom: 24px;
}

.login-brand {
  display: flex;
  margin-bottom: 18px;
}

.login-brand-icon {
  width: 52px;
  height: 52px;
  border-radius: 13px;
  box-shadow: 0 8px 24px rgba(var(--coral-rgb), 0.25);
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.2s var(--ease-out);
}

.login-brand-icon:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 12px 28px rgba(var(--coral-rgb), 0.35);
}

.login-title {
  font-size: clamp(28px, 4vw, 36px);
  line-height: 1.1;
  margin: 12px 0 10px;
  letter-spacing: -0.5px;
}

.login-title em {
  color: var(--teal);
  font-style: normal;
}

.login-subtitle {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
  margin: 0;
}

.login-tabs {
  display: flex;
  border-bottom: 2px solid var(--line);
  margin-bottom: 24px;
  gap: 16px;
}

.tab-btn {
  display: inline-block;
  text-decoration: none;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  padding: 10px 4px;
  font: 700 12px 'DM Mono', monospace;
  text-transform: uppercase;
  color: var(--muted);
  cursor: pointer;
  transition: background-color 0.2s var(--ease-out), border-color 0.2s var(--ease-out), color 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out), transform 0.2s var(--ease-out), opacity 0.2s var(--ease-out);
  letter-spacing: 0.5px;
}

.tab-btn:hover {
  color: var(--ink);
}

.tab-btn.active {
  color: var(--accent-text);
  border-bottom-color: var(--coral);
}

@keyframes authFadeIn {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.auth-form-card {
  display: flex;
  flex-direction: column;
  gap: 18px;
  animation: authFadeIn 0.18s ease-out;
}

[hidden],
.auth-form-card[hidden] {
  display: none !important;
}

.form-feedback {
  padding: 12px 14px;
  font-size: 12px;
  border-radius: 2px;
  line-height: 1.4;
}

.feedback-error {
  background: rgba(255, 85, 85, 0.12);
  color: var(--error);
  border: 1px solid rgba(255, 85, 85, 0.35);
}

.feedback-success {
  background: rgba(80, 250, 123, 0.12);
  color: var(--success);
  border: 1px solid rgba(80, 250, 123, 0.35);
}

.auth-submit-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 15px;
  font-size: 14px;
  margin-top: 6px;
  transition: transform 0.3s var(--ease-out), opacity 0.2s var(--ease-out);
}

.auth-submit-btn:hover {
  opacity: 0.94;
  transform: translateY(-1px);
}

.auth-submit-btn:active {
  transform: translateY(0);
}

.btn-arrow {
  font-size: 18px;
  transition: transform 0.2s var(--ease-out);
}

.auth-submit-btn:hover .btn-arrow {
  transform: translateX(4px);
}

.btn-loading {
  opacity: 0.75;
  cursor: wait;
}

.login-footer {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.login-footer-hint {
  margin: 0;
  font-size: 12px;
  color: var(--muted);
  text-align: center;
  line-height: 1.4;
}

.auth-link {
  color: var(--accent-text);
  font-weight: 700;
  text-decoration: none;
  transition: opacity 0.2s var(--ease-out), text-decoration 0.2s var(--ease-out);
}

.auth-link:hover {
  text-decoration: underline;
  opacity: 0.9;
}

.form-label-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 6px;
}

.form-label-row label {
  margin-bottom: 0;
}

.auth-sublink {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-text);
  text-decoration: none;
  transition: opacity 0.2s var(--ease-out), text-decoration 0.2s var(--ease-out);
}

.auth-sublink:hover {
  text-decoration: underline;
  opacity: 0.85;
}

.auth-helper-box {
  background: rgba(var(--coral-rgb), 0.08);
  border: 1px dashed rgba(var(--coral-rgb), 0.35);
  border-radius: 4px;
  padding: 14px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--ink);
  animation: authFadeIn 0.2s ease-out;
}

.auth-helper-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: var(--accent-text);
  margin-bottom: 6px;
  font-size: 12px;
}

.token-box {
  margin-top: 10px;
  padding: 10px;
  background: var(--input-bg);
  border: 1px solid var(--line);
  border-radius: 4px;
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  word-break: break-all;
  color: var(--teal);
}

.btn-proceed-reset {
  margin-top: 12px;
  width: 100%;
}

.password-requirements {
  margin: -6px 0 0;
  padding: 0 0 0 18px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
}

.password-requirements li {
  margin-bottom: 2px;
}

.user-identity-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: rgba(var(--coral-rgb), 0.12);
  border: 1px solid rgba(var(--coral-rgb), 0.25);
  border-radius: 4px;
  font-size: 12px;
  color: var(--ink);
}

.user-identity-badge strong {
  color: var(--purple);
}


/* ─── Result Modal ─────────────────────────────────────────────────────────── */
.modal--results {
  width: 100%;
  max-width: min(820px, 100%);
  max-height: 92vh;
  max-height: 92dvh;
  /* O modal inteiro rola (placar, estatísticas e questões); só o rodapé fica fixo. */
  overflow-y: auto;
  overscroll-behavior: contain;
  display: flex;
  flex-direction: column;
  padding: 32px 36px 0;
  box-sizing: border-box;
}

.results-header {
  text-align: center;
  border-bottom: 1px solid var(--line);
  padding-bottom: 18px;
  margin-bottom: 16px;
}

/* ─── Badge de performance do modal de resultados ────────────────────────── */
.results-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px 4px 8px;
  border-radius: 4px;
  font: 700 12px 'DM Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-bottom: 10px;
  border-left: 3px solid var(--teal);
  background: rgba(var(--teal-rgb), 0.08);
  color: var(--teal);
}

.results-badge.excellent {
  border-left-color: var(--success);
  background: rgba(29, 122, 78, 0.08);
  color: var(--success);
}

.results-badge.good {
  border-left-color: var(--teal);
  background: rgba(var(--teal-rgb), 0.08);
  color: var(--teal);
}

.results-badge.practice {
  border-left-color: var(--coral);
  background: var(--coral-glow);
  color: var(--accent-text);
}

.results-title {
  font-size: 24px;
  margin: 0 0 6px;
}

.results-score-wrap {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 8px;
  margin: 6px 0;
}

.results-score {
  font: 700 30px 'DM Mono', monospace;
  color: var(--ink);
}

.results-percent {
  font: 600 14px 'DM Mono', monospace;
  color: var(--teal);
  padding-left: 8px;
  margin-left: 4px;
  border-left: 2px solid var(--line);
  line-height: 1;
  align-self: center;
}

.results-summary-text {
  color: var(--muted);
  font-size: 14px;
  margin: 0;
}

/* ─── Scrollable Questions List ─────────────────────────────────────────── */
.results-list {
  flex: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 18px;
}

.results-list::-webkit-scrollbar {
  width: 6px;
}

.results-list::-webkit-scrollbar-thumb {
  background: rgba(10, 18, 20, 0.2);
  border-radius: 4px;
}

.result-card {
  background: var(--card-solid);
  border: 1px solid var(--line);
  border-left: 4px solid var(--muted);
  padding: 16px 18px;
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.result-card:hover {
  box-shadow: var(--shadow-card);
}

.result-card.is-correct {
  border-left-color: var(--success);
  background: var(--card-solid);
}

.result-card.is-wrong {
  border-left-color: var(--error);
  background: var(--card-solid);
}

.result-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.result-card-tag {
  font: 700 12px 'DM Mono', monospace;
  padding: 3px 8px;
  border-radius: 4px;
  letter-spacing: 0.4px;
  text-transform: uppercase;
}

.result-card.is-correct .result-card-tag {
  background: rgba(80, 250, 123, 0.18);
  color: var(--success);
}

.result-card.is-wrong .result-card-tag {
  background: rgba(255, 85, 85, 0.18);
  color: var(--error);
}

.result-card-qnumber {
  font: 600 12px 'DM Mono', monospace;
  color: var(--muted);
}

.result-card-question {
  font: 600 14px Manrope, sans-serif;
  color: var(--ink);
  line-height: 1.45;
  margin: 0;
}

.result-card-answers {
  font-size: 12px;
  line-height: 1.5;
  color: var(--ink);
  background: var(--kbd-bg);
  padding: 8px 12px;
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.result-user-answer {
  color: var(--muted);
}

.result-user-answer strong {
  color: var(--ink);
}

.result-card.is-wrong .result-user-answer strong {
  color: var(--error);
}

.result-correct-answer {
  color: var(--success);
  font-weight: 600;
}

.result-card-explanation {
  background: rgba(var(--teal-rgb), 0.08);
  border-left: 3px solid var(--teal);
  padding: 8px 12px;
  border-radius: 0 4px 4px 0;
  font-size: 12px;
  color: var(--ink);
  line-height: 1.5;
}

.result-card-explanation strong {
  color: var(--teal);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: block;
  margin-bottom: 2px;
}

.results-footer {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  border-top: 1px solid var(--line);
  padding: 16px 0 24px;
  margin-top: 4px;
  background: var(--card-solid);
  position: sticky;
  bottom: 0;
  z-index: 1;
}

.results-footer-left {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.results-footer-right {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

/* ─── Estilo base compartilhado dos botões do footer ────────────────────── */
.results-footer button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  height: 40px;
  padding: 0 18px;
  border-radius: 6px;
  border: none;
  font: 700 12px/1 Manrope, sans-serif;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: background 0.3s var(--ease-out), transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
  white-space: nowrap;
}

/* Botão secundário — Refazer e Fechar */
.btn-redo,
.btn-close-result {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line) !important;
}
.btn-redo:hover,
.btn-close-result:hover {
  background: var(--card-bg);
  color: var(--ink);
  border-color: var(--muted) !important;
}
.btn-redo:active,
.btn-close-result:active {
  transform: scale(0.97);
}

.btn-redo .icon {
  font-size: 14px;
  line-height: 1;
}

/* ─── Botão Caderno de Erros ────────────────────────────────────────────── */
.btn-mistakes {
  background: var(--orange);
  color: var(--btn-orange-text);
}
.btn-mistakes:hover {
  filter: brightness(0.9);
  transform: translateY(-1px);
}
.btn-mistakes:active {
  transform: translateY(0) scale(0.98);
}

/* ─── Botão Gerar Variações — tom primário, sem visual de IA ───────────── */
.btn-remix {
  background: var(--coral);
  color: var(--btn-primary-text);
}
.btn-remix:hover {
  background: var(--coral-dark);
  transform: translateY(-1px);
}
.btn-remix:active {
  transform: translateY(0) scale(0.98);
}

/* ─── Botão e Modal Explicativo: Por que o Acely? ──────────────────── */
.btn-about {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 16px;
  background: var(--card-bg);
  color: var(--ink);
  border: 1px solid var(--line);
  font: 600 12px Manrope, sans-serif;
  cursor: pointer;
  border-radius: 6px;
  transition: background 0.3s var(--ease-out), border-color 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}
.btn-about:hover {
  background: var(--card-solid);
  border-color: var(--muted);
  transform: translateY(-1px);
}
.btn-about:active {
  transform: translateY(0) scale(0.98);
}

.modal--about {
  max-width: 820px;
  max-height: 88vh;
  overflow-y: auto;
}

.about-modal-actions {
  margin-top: 1.5rem;
}

.btn-close-about {
  width: 100%;
}

.about-header {
  margin-bottom: 24px;
  text-align: center;
}

/* ─── Badge do modal About ───────────────────────────────────────────────── */
.about-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font: 700 12px 'DM Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  background: var(--card-bg);
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 10px;
}

.about-title {
  font-size: clamp(22px, 3.5vw, 28px);
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 6px;
}

.about-tagline {
  font-style: normal;
  color: var(--muted);
  font-size: 14px;
  margin: 0;
}

.about-pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.pillar-card {
  background: var(--card-bg);
  border: 1px solid var(--line);
  padding: 18px;
  border-radius: 6px;
  box-shadow: var(--shadow-card);
}

.pillar-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  border-radius: 8px;
  background: var(--card-solid);
  border: 1px solid var(--line);
  margin-bottom: 12px;
  line-height: 1;
}

.pillar-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--teal);
  margin: 0 0 6px;
}

.pillar-card p {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
  margin: 0;
}

.about-comparison {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 18px;
}

.comparison-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 12px;
}

.comparison-table-wrap {
  overflow-x: auto;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  text-align: left;
}

.comparison-table th,
.comparison-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}

.comparison-table th {
  background: var(--kbd-bg);
  font: 700 12px 'DM Mono', monospace;
  color: var(--ink);
  text-transform: uppercase;
}

.comparison-table .highlight-col {
  background: rgba(var(--teal-rgb), 0.12);
  color: var(--ink);
  border-left: 2px solid var(--teal);
  border-right: 2px solid var(--teal);
}

.comparison-table tr:hover td {
  background: var(--kbd-bg);
}

.comparison-table tr:hover td.highlight-col {
  background: rgba(var(--teal-rgb), 0.2);
}

/* ─── Botão Explorar Simulados (Catálogo) ───────────────────────────────── */
.btn-catalog {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  background: var(--btn-catalog-bg);
  border: 1px solid var(--btn-catalog-border);
  color: var(--btn-catalog-color);
  font: 700 12px Manrope, sans-serif;
  cursor: pointer;
  border-radius: 4px;
  transition: background-color .2s var(--ease-out), border-color .2s var(--ease-out), color .2s var(--ease-out), box-shadow .2s var(--ease-out), transform .2s var(--ease-out), opacity .2s var(--ease-out);
}
.btn-catalog:hover {
  background: var(--btn-catalog-hover-bg);
  border-color: var(--coral);
  color: var(--accent-text);
  transform: translateY(-1px);
}
.btn-catalog:active {
  transform: translateY(0);
}

/* ─── Exam Toolbar (Alternador de Modo e Submissão Rápida) ───────────────── */
.exam-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}

.view-mode-toggle {
  display: inline-flex;
  background: var(--kbd-bg);
  border: 1px solid var(--line);
  padding: 4px;
  border-radius: 6px;
  gap: 4px;
}

.toggle-btn {
  border: none;
  background: transparent;
  color: var(--muted);
  padding: 6px 14px;
  font: 700 12px 'DM Mono', monospace;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s var(--ease-out), border-color 0.3s var(--ease-out), color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), transform 0.3s var(--ease-out), opacity 0.3s var(--ease-out);
}

.toggle-btn:hover {
  color: var(--ink);
}

.toggle-btn.active {
  background: var(--card-solid);
  color: var(--teal);
  box-shadow: var(--shadow-card);
}

.btn-quick-submit {
  font-size: 12px;
  padding: 8px 18px;
  background: var(--coral);
  color: var(--btn-primary-text);
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-quick-submit:hover {
  background: var(--coral-dark);
  transform: translateY(-1px);
}

/* ─── Paleta de Questões (Question Palette) ────────────────────────────── */
.question-palette {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
  padding: 12px;
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.palette-btn {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  background: var(--card-solid);
  color: var(--muted);
  font: 700 12px 'DM Mono', monospace;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s var(--ease-out), border-color 0.3s var(--ease-out), color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), transform 0.3s var(--ease-out), opacity 0.3s var(--ease-out);
}

.palette-btn:hover {
  border-color: var(--teal);
  color: var(--teal);
  transform: translateY(-1px);
}

.palette-btn.active {
  border: 2px solid var(--coral);
  color: var(--accent-text);
  font-weight: 700;
  transform: scale(1.08);
  box-shadow: 0 2px 8px var(--coral-glow);
}

.palette-btn.answered {
  background: rgba(var(--teal-rgb), 0.15);
  border-color: var(--teal);
  color: var(--teal);
  font-weight: 700;
}

.palette-btn.answered.active {
  border-color: var(--coral);
  box-shadow: 0 0 0 2px var(--coral-glow);
}

/* ─── Modo Foco (1 questão por vez) ─────────────────────────────────────── */
.quiz--focus .question:not(.question--active) {
  display: none !important;
}

.quiz--focus .question.question--active {
  display: block;
  animation: fadeInFocus .2s ease;
}

@keyframes fadeInFocus {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.focus-navigation {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 24px;
  padding: 14px 20px;
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: var(--shadow-card);
}

.focus-indicator {
  font: 700 12px 'DM Mono', monospace;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.nav-btn {
  min-width: 130px;
  padding: 0 20px;
}

/* ─── Modal de Confirmação: Finalizar Simulado ──────────────────────────── */
.modal--confirm-submit {
  max-width: 440px;
  width: 100%;
  text-align: center;
  padding: 44px 40px 36px;
  animation: confirmPop 0.22s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes confirmPop {
  from { opacity: 0; transform: scale(0.88) translateY(12px); }
  to   { opacity: 1; transform: scale(1)   translateY(0);     }
}

.confirm-submit-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  line-height: 1;
  border-radius: 10px;
  background: var(--card-bg);
  border: 1px solid var(--line);
  margin: 0 auto 16px;
}

.confirm-submit-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 10px;
}

.confirm-submit-msg {
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 10px;
  line-height: 1.5;
}

.confirm-submit-msg strong {
  color: var(--ink);
  font-weight: 700;
}

.confirm-submit-warning {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 10px;
  align-items: start;
  background: rgba(255, 184, 108, 0.10);
  border: 1px solid rgba(255, 184, 108, 0.30);
  border-left: 3px solid var(--orange);
  border-radius: 6px;
  padding: 12px 14px;
  font-size: 12px;
  color: var(--ink);
  line-height: 1.55;
  margin: 0 0 20px;
  text-align: left;
}

.confirm-submit-warning .warn-icon {
  color: var(--orange);
  font-size: 14px;
  line-height: 1.55;
  flex-shrink: 0;
}

.confirm-submit-warning .warn-text {
  color: var(--muted);
}

.confirm-submit-warning strong {
  font-weight: 700;
  color: var(--ink);
}

.confirm-submit-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 24px;
}

.confirm-submit-actions .secondary {
  flex: 1;
  min-width: 140px;
  border-radius: 6px;
}

.btn-confirm-finish {
  flex: 1;
  min-width: 180px;
  background: var(--coral);
  color: var(--btn-primary-text);
  border-radius: 6px;
  transition: background 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}

.btn-confirm-finish:hover {
  background: var(--coral-dark);
  transform: translateY(-1px);
}

.confirm-submit-actions button:focus-visible {
  outline: 2px solid var(--teal) !important;
  outline-offset: 3px !important;
  box-shadow: 0 0 0 4px var(--focus-ring) !important;
  transform: translateY(-1px);
}

.btn-confirm-finish:active {
  transform: translateY(0) scale(0.98);
}

/* ─── Modal Catálogo de Simulados ───────────────────────────────────────── */
.modal--catalog {
  max-width: 900px;
  max-height: 88vh;
  overflow-y: auto;
}

.catalog-header {
  margin-bottom: 20px;
}

/* ─── Badge do modal Catálogo ──────────────────────────────────────────────── */
.catalog-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font: 700 12px 'DM Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  background: var(--card-bg);
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 10px;
}

.catalog-title {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 6px;
}

.catalog-subtitle {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 16px;
}

.catalog-search-wrap {
  position: relative;
  margin-bottom: 16px;
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 16px;
  color: var(--muted);
  pointer-events: none;
}

.catalog-search-input {
  width: 100%;
  padding: 12px 14px 12px 42px;
  border: 1px solid var(--input-border);
  background: var(--input-bg);
  color: var(--ink);
  font: 600 14px Manrope, sans-serif;
  border-radius: 6px;
  transition: border-color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.catalog-search-input:focus {
  border-color: var(--teal);
  outline: none;
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.catalog-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.catalog-tab-btn {
  border: 1px solid var(--line);
  background: var(--card-solid);
  color: var(--muted);
  padding: 6px 14px;
  font: 700 12px Manrope, sans-serif;
  border-radius: 999px;
  cursor: pointer;
  transition: background-color 0.3s var(--ease-out), border-color 0.3s var(--ease-out), color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), transform 0.3s var(--ease-out), opacity 0.3s var(--ease-out);
}

.catalog-tab-btn:hover {
  border-color: var(--teal);
  color: var(--teal);
}

.catalog-tab-btn.active {
  background: var(--teal);
  color: var(--btn-teal-text);
  border-color: var(--teal);
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.catalog-card {
  background: var(--card-solid);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
  cursor: pointer;
  transition: background-color .2s var(--ease-out), border-color .2s var(--ease-out), color .2s var(--ease-out), box-shadow .2s var(--ease-out), transform .2s var(--ease-out), opacity .2s var(--ease-out);
  box-shadow: var(--shadow-card);
}

.catalog-card:hover {
  transform: translateY(-2px);
  border-color: var(--teal);
  box-shadow: 0 6px 18px rgba(24, 35, 38, 0.15);
}

.catalog-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.catalog-card-title {
  font: 700 14px Manrope, sans-serif;
  color: var(--ink);
  margin: 0;
  line-height: 1.35;
}

.catalog-card-badge {
  font: 700 12px 'DM Mono', monospace;
  padding: 2px 7px;
  border-radius: 4px;
  background: var(--kbd-bg);
  border: 1px solid var(--line);
  color: var(--muted);
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.catalog-card-badge.ai {
  background: rgba(var(--teal-rgb), 0.1);
  color: var(--teal);
  border-color: rgba(var(--teal-rgb), 0.25);
}

.catalog-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font: 500 12px 'DM Mono', monospace;
  color: var(--muted);
}

.catalog-card-btn {
  width: 100%;
  padding: 8px 12px;
  font-size: 12px;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
}

.catalog-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 32px 16px;
  color: var(--muted);
  font-size: 14px;
}

/* ─── Botão de Alternância de Tema ───────────────────────────────────────── */
.btn-theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 14px;
  background: var(--card-bg);
  color: var(--ink);
  border: 1px solid var(--line);
  font: 600 12px Manrope, sans-serif;
  cursor: pointer;
  border-radius: 6px;
  transition: background 0.3s var(--ease-out), border-color 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}
.btn-theme-toggle:hover {
  border-color: var(--muted);
  background: var(--card-solid);
  transform: translateY(-1px);
}
.theme-icon { font-size: 14px; line-height: 1; }
.theme-label { font-size: 12px; }

/* Botão de idioma: mostra o código do idioma atual (PT / EN) */
.lang-code {
  font: 700 var(--text-xs, 12px)/1 Manrope, sans-serif;
  min-width: 2ch;
  text-align: center;
}

/* Esconde o português por um instante enquanto o i18n.js traduz (ver i18n-boot.js) */
html.i18n-pending body { visibility: hidden; }

/* ─── Badges de Atalhos de Teclado (Hotkeys) ─────────────────────────────── */
.option-kbd {
  margin-left: auto;
  font: 700 12px 'DM Mono', monospace;
  padding: 2px 7px;
  border-radius: 4px;
  background: var(--kbd-bg);
  border: 1px solid var(--kbd-border);
  color: var(--muted);
  line-height: 1.3;
  opacity: 0.8;
  transition: background-color 0.3s var(--ease-out), border-color 0.3s var(--ease-out), color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), transform 0.3s var(--ease-out), opacity 0.3s var(--ease-out);
  -webkit-user-select: none;
  user-select: none;
}
.option:hover .option-kbd,
.option:has(input:checked) .option-kbd {
  color: var(--teal);
  border-color: var(--teal);
  opacity: 1;
}

.shortcuts-hint {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
  margin-top: 14px;
  text-align: center;
  padding: 8px 14px;
  background: var(--kbd-bg);
  border: 1px dashed var(--line);
  border-radius: 6px;
  line-height: 1.4;
}
.shortcuts-hint strong {
  color: var(--ink);
  font-family: 'DM Mono', monospace;
  font-weight: 600;
}

/* ─── Feedback Pedagógico & Estatísticas Avançadas ───────────────────────── */
.results-stats-container {
  margin-bottom: 24px;
}

.stats-overview-card {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 20px 22px;
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
}
.stats-overview-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--teal);
}
.stats-overview-card.tier-excellent::before { background: var(--success); }
.stats-overview-card.tier-good::before { background: var(--teal); }
.stats-overview-card.tier-average::before { background: var(--orange); }
.stats-overview-card.tier-attention::before { background: var(--error); }

.stats-tier-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 8px;
}
.stats-tier-tag {
  font: 700 14px Manrope, sans-serif;
  color: var(--ink);
}
.stats-rhythm-badge {
  font: 500 12px 'DM Mono', monospace;
  color: var(--muted);
  background: var(--kbd-bg);
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid var(--line);
  letter-spacing: 0.3px;
}
.stats-encouragement {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
  margin: 0 0 16px;
}
.stats-pills-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
  gap: 10px;
}
.stats-pill {
  padding: 10px 12px;
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background: var(--card-solid);
  border: 1px solid var(--line);
}
.stats-pill .pill-number {
  font: 700 18px 'DM Mono', monospace;
  color: var(--ink);
  line-height: 1.2;
}
.stats-pill .pill-label {
  font: 600 12px Manrope, sans-serif;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 2px;
}
.pill-correct .pill-number { color: var(--success); }
.pill-wrong .pill-number { color: var(--error); }
.pill-time .pill-number { color: var(--teal); }

.sections-breakdown-card {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 18px 20px;
  margin-bottom: 20px;
}
.sections-breakdown-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 0 0 14px;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sections-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.section-item {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.section-item-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
}
.section-name {
  font-weight: 600;
  color: var(--ink);
  max-width: 70%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.section-score {
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 5px;
}

.section-score-pct {
  color: var(--muted);
  opacity: 0.65;
  font-size: var(--text-xs);
}
.section-progress-track {
  width: 100%;
  height: 7px;
  background: var(--line);
  border-radius: 10px;
  overflow: hidden;
}
.section-progress-fill {
  height: 100%;
  border-radius: 10px;
  transition: width .5s var(--ease-out);
}
.section-progress-fill.bar-high { background: var(--success); }
.section-progress-fill.bar-mid  { background: var(--orange); }
.section-progress-fill.bar-low  { background: var(--error); }

/* ─── Modal Genérico de Notificação (Substituto de alert()) ──────────────── */
.modal--notice {
  max-width: 440px;
  width: 100%;
  text-align: center;
  padding: 38px 32px 30px;
  animation: confirmPop 0.22s cubic-bezier(0.22, 1, 0.36, 1);
}
.notice-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  line-height: 1;
  border-radius: 10px;
  background: var(--card-bg);
  border: 1px solid var(--line);
  margin: 0 auto 16px;
}
.notice-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 10px;
}
.notice-msg {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.55;
  margin: 0;
}
.modal-actions--notice {
  justify-content: center;
  margin-top: 22px;
}
.btn-notice-close {
  min-width: 140px;
}

/* ─── Modal de Configuração de Tempo (Substituto de prompt()) ─────────────── */
.modal--timer {
  max-width: 460px;
  width: 100%;
  padding: 32px 34px 28px;
}
.timer-modal-header {
  text-align: center;
  margin-bottom: 20px;
}
.timer-modal-icon {
  font-size: 36px;
  display: block;
  margin-bottom: 8px;
}
.timer-modal-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 6px;
}
.timer-modal-subtitle {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.45;
  margin: 0;
}
.timer-presets-label {
  font: 700 12px 'DM Mono', monospace;
  text-transform: uppercase;
  color: var(--muted);
  letter-spacing: 0.5px;
  margin-bottom: 10px;
}
.timer-presets-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 20px;
}
.timer-chip {
  padding: 9px 6px;
  background: var(--card-solid);
  border: 1px solid var(--line);
  color: var(--ink);
  font: 600 12px 'DM Mono', monospace;
  border-radius: 4px;
  cursor: pointer;
  text-align: center;
  transition: background-color 0.3s var(--ease-out), border-color 0.3s var(--ease-out), color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), transform 0.3s var(--ease-out), opacity 0.3s var(--ease-out);
}
.timer-chip:hover {
  border-color: var(--coral);
  color: var(--accent-text);
  transform: translateY(-1px);
}
.timer-chip.active {
  background: var(--coral-glow);
  border-color: var(--coral);
  color: var(--accent-text);
  font-weight: 700;
  box-shadow: 0 2px 8px var(--coral-glow);
}
.timer-custom-form {
  border-top: 1px solid var(--line);
  padding-top: 18px;
}
.timer-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.timer-input-wrap input {
  padding-right: 50px;
  font-size: 14px;
  font-weight: 600;
}
.timer-input-suffix {
  position: absolute;
  right: 14px;
  font: 700 12px 'DM Mono', monospace;
  color: var(--muted);
  pointer-events: none;
}

.modal-actions--timer {
  margin-top: 18px;
}

/* ═══════════════════════════════════════════════════════════════════════════
   ─── OTIMIZAÇÕES MOBILE & DESIGN RESPONSIVO (Smartphones & Tablets) ─────────
   ═══════════════════════════════════════════════════════════════════════════ */

@media (max-width: 768px) {
  /* Previne zoom automático indesejado no iOS ao focar campos */
  input[type="text"],
  input[type="password"],
  input[type="email"],
  input[type="number"],
  select {
    font-size: 16px !important;
  }

  /* ── Shell & Base ── */
  .shell {
    padding: 16px 14px 60px;
    max-width: 100%;
    overflow-x: clip;
  }

  /* ── Top Bar & Timer Fixo Seguro ── */
  #timer {
    top: 12px;
    right: 12px;
    padding: 6px 10px;
    min-width: 62px;
    font-size: 12px;
    z-index: var(--z-timer-mobile);
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.22);
  }

  .timer-config {
    top: 48px;
    right: 12px;
    z-index: var(--z-timer-mobile);
  }

  .hero-brand {
    padding-right: 78px; /* Abre espaço seguro para não colidir com o timer fixo */
    margin-bottom: 12px;
  }

  /* ── Hero & Botões de Ação ── */
  .hero {
    padding-bottom: 20px;
  }

  .hero-top {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    margin-top: 8px;
  }

  .quiz-picker {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    max-width: 100%;
    gap: 6px;
    font-size: var(--text-xs);
  }

  .custom-select-wrap {
    width: 100%;
    max-width: 100%;
  }

  .custom-select-trigger {
    width: 100%;
    max-width: 100%;
    min-height: 44px;
    padding: 10px 12px;
    font-size: 14px;
  }

  .custom-select-dropdown {
    width: 100%;
    max-width: 100%;
    left: 0;
    right: 0;
  }

  .hero-top-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    width: 100%;
  }

  .btn-theme-toggle,
  .btn-catalog,
  .btn-about,
  .btn-add-quiz {
    padding: 9px 8px;
    font-size: 12px;
    justify-content: center;
    text-align: center;
    border-radius: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .auth-controls {
    grid-column: 1 / -1;
    width: 100%;
  }

  .user-profile-badge {
    width: 100%;
    justify-content: space-between;
    box-sizing: border-box;
    padding: 8px 12px;
  }

  .btn-auth-login {
    width: 100%;
    justify-content: center;
    padding: 11px;
  }

  /* ── Tipografia do Header ── */
  h1 {
    font-size: clamp(28px, 8.5vw, 42px);
    line-height: 1.06;
    margin: 14px 0 12px;
    letter-spacing: -0.5px;
    word-break: break-word;
  }

  .intro {
    font-size: 12px;
    line-height: 1.5;
    margin-bottom: 14px;
  }

  .hero-actions {
    margin-top: 14px;
  }

  .start-btn {
    width: 100%;
    padding: 14px 18px;
    font-size: 14px;
  }

  /* ── Status e Barra de Progresso ── */
  .status {
    margin-top: 20px;
    font-size: var(--text-xs);
    align-items: center;
  }

  /* ── Toolbar de Modos de Exame (Foco / Lista) ── */
  .exam-toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    margin-top: 16px;
    padding-top: 14px;
  }

  .view-mode-toggle {
    display: flex;
    width: 100%;
  }

  .toggle-btn {
    flex: 1;
    text-align: center;
    padding: 9px 6px;
    font-size: 12px;
  }

  .btn-quick-submit {
    width: 100%;
    justify-content: center;
    padding: 13px;
    font-size: 14px;
  }

  /* ── Paleta de Navegação Rápida entre Questões ── */
  .question-palette {
    gap: 6px;
    padding: 8px;
    justify-content: center;
    max-height: 140px;
    overflow-y: auto;
  }

  .palette-btn {
    width: 34px;
    height: 34px;
    font-size: 12px;
    border-radius: 4px;
  }

  /* ── Card da Questão e Alternativas ── */
  .quiz {
    gap: 14px;
    margin-top: 20px;
  }

  .question {
    padding: 16px 14px;
    border-radius: 8px;
  }

  .question-head {
    gap: 10px;
    align-items: flex-start;
  }

  .number {
    font-size: 14px;
    min-width: 24px;
  }

  h2 {
    font-size: 14px;
    line-height: 1.45;
  }

  .section {
    margin: 0 0 8px 0;
    font-size: var(--text-xs);
  }

  .context {
    margin: 0 0 12px 0;
    font-size: 12px;
    line-height: 1.5;
    max-width: 100%;
  }

  /* Alternativas em coluna única no mobile para legibilidade total */
  .options {
    display: flex !important;
    flex-direction: column !important;
    gap: 9px !important;
    margin: 14px 0 0 0 !important;
    width: 100% !important;
  }

  .option {
    padding: 13px 14px;
    min-height: 48px;
    border-radius: 6px;
    font-size: 14px;
    line-height: 1.4;
    gap: 12px;
    width: 100%;
    box-sizing: border-box;
    align-items: flex-start;
  }

  .option input[type="radio"] {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    flex-shrink: 0;
  }

  .option span:not(.option-kbd) {
    flex: 1;
    word-break: break-word;
  }

  /* Oculta atalhos de teclado desktop em tela sensível ao toque */
  .option-kbd {
    display: none !important;
  }

  .shortcuts-hint {
    display: none !important;
  }

  /* ── Navegação Modo Foco ── */
  .focus-navigation {
    padding: 10px 12px;
    gap: 8px;
    border-radius: 8px;
  }

  .nav-btn {
    min-width: unset;
    flex: 1;
    padding: 12px 8px;
    font-size: 12px;
    text-align: center;
    border-radius: 6px;
  }

  .focus-indicator {
    font-size: var(--text-xs);
    white-space: nowrap;
    text-align: center;
  }

  /* ── Ações Finais do Quiz ── */
  .actions {
    flex-direction: column;
    gap: 10px;
    margin: 22px 0;
    width: 100%;
  }

  .actions button {
    width: 100%;
    justify-content: center;
    padding: 14px;
    font-size: 14px;
    border-radius: 6px;
  }

  /* ── Modais Gerais Responsivos ── */
  .modal-overlay {
    padding: 10px;
    align-items: flex-end; /* Desliza suavemente no mobile como bottom-sheet */
  }

  @media (min-width: 520px) {
    .modal-overlay {
      align-items: center;
    }
  }

  .modal {
    padding: 22px 16px 18px;
    border-radius: 12px 12px 8px 8px;
    max-height: 92vh;
    max-width: 100%;
    width: 100%;
    overflow-y: auto;
    box-sizing: border-box;
  }

  .modal-close {
    top: 10px;
    right: 10px;
    padding: 6px 10px;
    font-size: 24px;
  }

  .modal-title {
    font-size: 18px;
    padding-right: 32px;
    line-height: 1.25;
  }

  .modal-subtitle {
    font-size: 12px;
    line-height: 1.5;
    margin-bottom: 14px;
  }

  /* Abas do Modal */
  .modal-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 14px;
    overflow-x: auto;
    width: 100%;
  }

  .modal-tab-btn {
    flex: 1;
    padding: 9px 6px;
    font-size: 12px;
    justify-content: center;
    text-align: center;
    white-space: nowrap;
  }

  /* Linhas e Campos do Formulário */
  .modal-form-row {
    flex-direction: column;
    gap: 10px;
    margin-bottom: 12px;
  }

  .modal-actions {
    flex-direction: column-reverse;
    gap: 8px;
    width: 100%;
    margin-top: 16px;
  }

  .modal-actions button {
    width: 100%;
    height: 48px;
    font-size: 14px;
    text-align: center;
    justify-content: center;
    border-radius: 6px;
    padding: 0 16px;
  }

  .drop-zone {
    padding: 22px 12px;
    border-radius: 6px;
  }

  .drop-zone-icon {
    font-size: 24px;
    margin-bottom: 6px;
  }

  .drop-zone-label {
    font-size: 14px;
  }

  .drop-zone-hint {
    font-size: 12px;
  }

  .drop-zone-types {
    font-size: var(--text-xs);
  }

  /* ── Modal de Resultado ── */
  .modal--results {
    padding: 20px 14px 0;
    max-height: 94dvh;
  }

  /* Rodapé empilhado ocupa muita altura: no celular ele rola junto com o conteúdo. */
  .results-footer {
    position: static;
    padding: 16px 0 18px;
  }

  .results-header {
    margin-bottom: 14px;
  }

  .results-title {
    font-size: 20px;
  }

  .results-score-wrap {
    gap: 8px;
    margin: 8px 0;
  }

  .results-score {
    font-size: 24px;
  }

  .results-percent {
    font-size: 14px;
  }

  .results-list {
    gap: 10px;
  }

  .result-card {
    padding: 12px 14px;
    gap: 6px;
    border-radius: 6px;
  }

  .result-card-question {
    font-size: 12px;
  }

  .result-card-answers {
    font-size: 12px;
    padding: 6px 10px;
  }

  .result-card-explanation {
    font-size: 12px;
    padding: 6px 10px;
  }

  .stats-overview-card {
    padding: 14px 12px;
    margin-bottom: 14px;
  }

  .stats-tier-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .stats-pills-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
  }

  .stats-pill {
    padding: 8px 6px;
  }

  .stats-pill .pill-number {
    font-size: 16px;
  }

  .stats-pill .pill-label {
    font-size: var(--text-xs);
  }

  .sections-breakdown-card {
    padding: 14px 12px;
    margin-bottom: 14px;
  }

  .results-footer {
    flex-direction: column;
    gap: 8px;
    width: 100%;
  }

  .results-footer-left,
  .results-footer-right {
    width: 100%;
    flex-direction: column;
    gap: 8px;
  }

  .results-footer button,
  .btn-redo,
  .btn-mistakes,
  .btn-remix,
  .btn-close-result {
    width: 100%;
    height: 48px;
    font-size: 14px;
    border-radius: 6px;
    padding: 0 16px;
  }

  /* ── Modal de Catálogo ── */
  .modal--catalog {
    padding: 20px 14px 16px;
  }

  .catalog-title {
    font-size: 20px;
  }

  .catalog-tabs {
    gap: 6px;
    margin-bottom: 12px;
  }

  .catalog-tab-btn {
    padding: 5px 10px;
    font-size: var(--text-xs);
  }

  .catalog-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .catalog-card {
    padding: 14px;
    gap: 10px;
  }

  /* ── Modal Sobre ── */
  .modal--about {
    padding: 20px 14px 16px;
  }

  .about-pillars {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .comparison-table th,
  .comparison-table td {
    padding: 7px 8px;
    font-size: 11.5px;
  }

  /* ── Modal de Confirmação ── */
  .modal--confirm-submit {
    padding: 24px 16px 20px;
  }

  .confirm-submit-actions {
    flex-direction: column-reverse;
    gap: 8px;
    width: 100%;
  }

  .confirm-submit-actions button,
  .confirm-submit-actions .secondary,
  .btn-confirm-finish {
    width: 100%;
    height: 48px;
    min-width: unset;
    border-radius: 6px;
    padding: 0 16px;
    font-size: 14px;
  }

  /* ── Modal de Timer Customizado ── */
  .modal--timer {
    padding: 24px 16px 20px;
  }

  .timer-presets-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
  }

  .timer-chip {
    padding: 8px 4px;
    font-size: 12px;
  }

  /* ── Telas de Autenticação (Login / Cadastro) ── */
  .login-body {
    padding: 16px 12px;
  }

  .login-card {
    padding: 24px 18px 20px;
    border-radius: 8px;
  }

  .login-title {
    font-size: 24px;
  }

  .login-brand-icon {
    width: 44px;
    height: 44px;
  }
}

/* ─── Telas Ultra Pequenas (Smartphones Compactos <= 380px) ───────────────── */
@media (max-width: 380px) {
  .hero-top-buttons {
    grid-template-columns: 1fr;
  }

  .timer-presets-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-pills-row {
    grid-template-columns: 1fr;
  }

  .results-score-wrap {
    flex-direction: column;
    align-items: center;
  }
}


/* ═══════════════════════════════════════════════════════════════════════════
   Design Upgrade — camada visual (DESIGN_UPGRADE.md)
   Somente apresentação: sem mudanças em ids, classes, handlers ou rotas.
   Reverter = remover este bloco.
   ═══════════════════════════════════════════════════════════════════════════ */
:root {
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast: 200ms;                   /* skill de design: transições de cor nunca abaixo de 200 ms */
  --dur-base: 300ms;
  --dur-slow: 600ms;
  --shadow-lift: 0 10px 28px rgba(24, 35, 38, 0.10);
}
[data-theme="dark"] {
  --shadow-lift: 0 12px 30px rgba(0, 0, 0, 0.5);
}

/* Tipografia: hierarquia mais firme no título e no enunciado */
h1 { font-weight: 700; letter-spacing: -0.03em; text-wrap: balance; }
.intro { text-wrap: pretty; font-size: 16px; }
.eyebrow { letter-spacing: 0.12em; }
.question h2 { font-size: 18px; line-height: 1.5; font-weight: 700; text-wrap: pretty; }

/* Botões: raio e altura consistentes em toda a barra superior */
.btn-theme-toggle,
.btn-catalog,
.btn-about,
.btn-add-quiz,
.custom-select-trigger,
.btn-quick-submit,
.palette-btn,
.option {
  border-radius: var(--radius-sm);
}
.primary, .secondary { border-radius: var(--radius-sm); height: 44px; }
.hero-top-buttons { gap: 8px; }

/* Cartão da questão: superfície com profundidade e número em destaque */
.question {
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
}
.number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 26px;
  height: 26px;
  padding: 0 6px;
  border-radius: 999px;
  background: var(--coral-glow);
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}

/* Alternativas: alvo de toque maior, estado selecionado inequívoco */
.option {
  min-height: 52px;
  padding: 14px 16px;
  transition: border-color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.option:hover {
  background: var(--option-hover);
  box-shadow: var(--shadow-card);
}
.option:active { transform: scale(0.99); }
.option:has(input:checked) {
  border-color: var(--teal);
  box-shadow: inset 4px 0 0 var(--teal);
}

/* Progresso: barra mais legível e com easing suave */
.progress-track { height: 8px; border-radius: 999px; }
#progressBar { border-radius: 999px; transition: width .4s var(--ease-out); }

/* Cronômetro como pílula discreta; só ganha destaque quando está correndo */
#timer { border-radius: 999px; font-weight: 700; letter-spacing: 0.02em; color: var(--muted); }
#timer.running { color: var(--accent-text); }
#timer.expired { color: var(--error); }

/* Paleta de questões: células mais compactas e estados claros */
.question-palette { border-radius: var(--radius-md); gap: 6px; }
.palette-btn { width: 36px; height: 36px; }
.palette-btn.active { transform: none; box-shadow: 0 0 0 3px var(--coral-glow); }

/* Navegação do modo foco: fixa ao rodapé para não perder o controle ao rolar */
.focus-navigation {
  position: sticky;
  bottom: 12px;
  z-index: var(--z-sticky-nav);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lift);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

/* Modais: raio maior e entrada suave */
.modal { border-radius: var(--radius-lg); }
.modal-close { border-radius: var(--radius-sm); }

/* Dica de atalhos só faz sentido com teclado físico */
@media (hover: none) and (pointer: coarse) {
  .shortcuts-hint { display: none; }
}

/* Desktop: mais respiro entre hero e conteúdo */
@media (min-width: 769px) {
  .shell { padding-top: 48px; }
  .hero { padding-bottom: 36px; }
  .quiz { margin-top: 32px; }
}

/* Mobile: opções em coluna única e cartão mais compacto */
@media (max-width: 600px) {
  .question { padding: 18px 16px; border-radius: var(--radius-md); }
  .options { grid-template-columns: 1fr; }
  .question h2 { font-size: 16px; }
}

/* Acessibilidade: respeita preferência por menos movimento */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Ícones SVG inline (herdam currentColor; substituem emojis de interface) */
.ui-icon { flex-shrink: 0; vertical-align: -3px; margin-right: 4px; }
.btn-catalog, .btn-about, .toggle-btn { display: inline-flex; align-items: center; gap: 6px; }
.ui-icon { margin-right: 0; }

/* ═══════════════════════════════════════════════════════════════════════════
   Design Upgrade — fase 2: tokens, cabeçalho e cronômetro
   ═══════════════════════════════════════════════════════════════════════════ */
:root {
  /* Escala de espaçamento */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  /* Escala tipográfica (mínimo prático de 12px para rótulos) */
  --text-xs: 12px;
  --text-sm: 14px;
  --text-md: 16px;
  --text-lg: 19px;
  /* Tipografia */
  --font-sans: Manrope, system-ui, sans-serif;
  --font-mono: 'DM Mono', ui-monospace, monospace;
}

/* Rótulos nunca abaixo de 12px */
.quiz-picker-label,
.section,
.custom-select-group-header { font-size: var(--text-xs); }

/* Cabeçalho: marca + utilitários na mesma linha; ação principal abaixo do título */
.hero-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}
.hero-bar .hero-brand { margin-bottom: 0; }
.hero-utils {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.hero-top { margin-top: var(--space-5); margin-bottom: 0; }

.btn-ghost {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  height: 36px;
  padding: 0 10px;
  gap: 6px;
  font-size: var(--text-xs);
  font-weight: 700;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}
.btn-ghost:hover { background: var(--kbd-bg); color: var(--ink); border-color: var(--line); transform: none; }
.hero-utils .theme-label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Cronômetro: só aparece enquanto o simulado está em andamento (ou expirou) */
#timer:not(.running):not(.expired) { display: none; }
.btn-set-timer { height: 46px; gap: 8px; }
.start-btn.hidden ~ .btn-set-timer { display: none; }
@media (max-width: 768px) {
  .hero-actions { flex-wrap: wrap; }
  .btn-set-timer { width: 100%; }
  .hero-bar { padding-right: 0; }
  .hero-bar .hero-brand { padding-right: 0; }
  .btn-about .btn-label { display: none; }
}
@media (max-width: 1100px) {
  body:has(#timer.running) .hero-utils,
  body:has(#timer.expired) .hero-utils { margin-right: 92px; }
}

/* Ícones SVG: espaçamento padrão e variantes de bloco */
.ui-icon { margin-right: 6px; vertical-align: -3px; }
.theme-icon .ui-icon,
.pillar-icon .ui-icon,
.confirm-submit-icon .ui-icon,
.notice-icon .ui-icon,
.timer-modal-icon .ui-icon,
.drop-zone-icon .ui-icon,
.btn-add-icon .ui-icon,
.btn-catalog .ui-icon,
.btn-about .ui-icon,
.btn-add-quiz .ui-icon,
.btn-add-quiz .ui-icon,
.toggle-btn .ui-icon,
.btn-ghost .ui-icon,
.timer-config-label .ui-icon,
.search-icon .ui-icon,
.warn-icon .ui-icon,
.file-preview-icon .ui-icon { margin-right: 0; }
.theme-icon { display: inline-flex; }
.pillar-icon, .confirm-submit-icon, .notice-icon, .timer-modal-icon, .drop-zone-icon {
  color: var(--teal);
}
.pillar-icon, .notice-icon, .timer-modal-icon, .drop-zone-icon { display: inline-flex; font-size: 0; }
.inline-ai { color: var(--teal); display: inline-flex; vertical-align: middle; }

/* ═══════════════════════════════════════════════════════════════════════════
   Design Upgrade — fase 3: tokens restantes, movimento, toque e auth
   ═══════════════════════════════════════════════════════════════════════════ */
:root {
  /* Easing */
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  /* Sombras */
  --shadow-sm: 0 1px 2px rgba(24, 35, 38, 0.08);
  --shadow-md: 0 4px 16px rgba(24, 35, 38, 0.10);
  --shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.35);
  /* Camadas */
  --z-timer: 10;
  --z-sticky-nav: 20;
  --z-timer-mobile: 95;
  --z-overlay: 100;
  /* Estados semânticos (fundo / texto) */
  --state-success-bg: rgba(29, 122, 78, 0.12);
  --state-success-fg: var(--success);
  --state-error-bg: rgba(163, 59, 43, 0.12);
  --state-error-fg: var(--error);
  --state-warning-bg: rgba(217, 119, 6, 0.14);
  --state-warning-fg: #8a4b00;
  --state-info-bg: rgba(var(--teal-rgb), 0.12);
  --state-info-fg: var(--teal);
}
[data-theme="dark"] {
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.6);
  --state-success-bg: rgba(111, 220, 154, 0.14);
  --state-error-bg: rgba(255, 138, 122, 0.14);
  --state-warning-bg: rgba(242, 184, 102, 0.16);
  --state-warning-fg: var(--orange);
  --state-info-bg: rgba(var(--teal-rgb), 0.14);
}

/* Marca: sombra discreta sob o ícone */
.hero-brand-icon { box-shadow: var(--shadow-sm); }

/* Pressão consistente em botões */
.primary:active, .secondary:active, .start-btn:active { transform: scale(0.97); }

/* Hover que desloca elementos só em dispositivos com ponteiro preciso */
@media (hover: none), (pointer: coarse) {
  .primary:hover, .secondary:hover, .start-btn:hover, .btn-add-quiz:hover,
  .btn-catalog:hover, .palette-btn:hover, #timer:hover, .btn-quick-submit:hover {
    transform: none;
  }
}

/* Origem de transformação a partir do gatilho */
.custom-select-dropdown { transform-origin: top center; }
.timer-config { transform-origin: top right; }

/* Alvos de toque ≥ 44px no mobile */
@media (max-width: 768px) {
  button, .timer-chip, .catalog-tab-btn, .modal-tab-btn, .toggle-btn,
  .custom-select-option, .btn-ghost, .timer-preset-select { min-height: 44px; }
  .hero-utils .btn-ghost { min-width: 44px; }
  .site-footer a, .tab-btn, .auth-back-link, .auth-sublink, .guest-ai-notice-link {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
  }
  .tab-btn { min-width: 44px; justify-content: center; }
  .palette-btn { min-width: 44px; width: 44px; height: 44px; }
  .modal-close { min-width: 44px; min-height: 44px; }
}

/* Tablet (769–980px): shell e opções respiram melhor */
@media (min-width: 769px) and (max-width: 980px) {
  .shell { padding-left: 32px; padding-right: 32px; }
  .hero-top { flex-wrap: wrap; }
  .quiz-picker { max-width: none; flex: 1 1 100%; }
  .hero-top-buttons { width: 100%; }
}

/* Catálogo: entrada escalonada curta, só nos 8 primeiros cards */
@media (prefers-reduced-motion: no-preference) {
  .catalog-card { animation: catalogIn .24s var(--ease-out) both; }
  .catalog-card:nth-child(n+9) { animation: none; }
  .catalog-card:nth-child(2) { animation-delay: 30ms; }
  .catalog-card:nth-child(3) { animation-delay: 60ms; }
  .catalog-card:nth-child(4) { animation-delay: 90ms; }
  .catalog-card:nth-child(5) { animation-delay: 120ms; }
  .catalog-card:nth-child(6) { animation-delay: 150ms; }
  .catalog-card:nth-child(7) { animation-delay: 180ms; }
  .catalog-card:nth-child(8) { animation-delay: 210ms; }
}
@keyframes catalogIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Login/cadastro: fundo com respiração lenta (CSS puro; estático em reduced-motion) */
.login-body { background-size: 140% 140%; }
@media (prefers-reduced-motion: no-preference) {
  .login-body { animation: authDrift 24s var(--ease-in-out) infinite alternate; }
}
@keyframes authDrift {
  from { background-position: 0% 0%; }
  to { background-position: 100% 100%; }
}

/* ═══ Fase 4: ajustes vistos na baseline visual ═══════════════════════════ */
/* Paleta sem questões não ocupa espaço */
.question-palette:empty { display: none; }

/* Mobile: marca numa linha; utilitários e selo de sessão compactos na seguinte */
@media (max-width: 768px) {
  .hero-bar { flex-direction: column; align-items: stretch; gap: var(--space-2); }
  /* Com ícones de 44px, os botões de conta descem para a linha de baixo quando não cabem */
  .hero-utils { justify-content: flex-start; flex-wrap: wrap; gap: var(--space-1) var(--space-2); }
  .hero-utils .auth-controls { width: auto; margin-left: auto; }
  .hero-utils .guest-action-link { white-space: nowrap; }
  .hero-utils .user-profile-badge { width: auto; padding: 4px 6px 4px 10px; gap: var(--space-2); }
}

/* Controles nativos (rádio, checkbox, select) seguem o tema */
:root { color-scheme: light; }
[data-theme="dark"] { color-scheme: dark; }

/* Navegação do modo foco: barra flutuante só no mobile (questões longas);
   no desktop fica no fluxo para não cobrir o enunciado */
@media (min-width: 769px) {
  .focus-navigation { position: static; }
}

/* Paleta mobile: 3 linhas de 44px visíveis antes de rolar */
@media (max-width: 768px) {
  .question-palette { max-height: 168px; }
}

/* Modal de tempo: campo ocupa a linha toda, com o sufixo "min" dentro dele */
.timer-input-wrap input { flex: 1; width: 100%; }

/* Selo de sessão do convidado: Entrar / Cadastrar no lugar de "Sair" */
.guest-actions { display: inline-flex; align-items: center; gap: var(--space-1); }
.guest-actions[hidden], .user-role-badge[hidden], .btn-auth-logout[hidden] { display: none; }
.guest-action-link {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 10px;
  border-radius: var(--radius-sm);
  font: 700 var(--text-xs) var(--font-sans);
  color: var(--teal);
  text-decoration: none;
  transition: background-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.guest-action-link:hover { background: var(--kbd-bg); }
.guest-action-link--primary { background: var(--coral); color: var(--btn-primary-text); }
.guest-action-link--primary:hover { background: var(--coral-dark); }
@media (max-width: 768px) {
  .guest-action-link { min-height: 44px; }
}

/* Login/cadastro: divisor "ou" e respiro entre o formulário e o acesso de convidado */
.auth-divider {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: var(--space-5) 0 var(--space-4);
  color: var(--muted);
  font: 500 var(--text-xs) var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.auth-divider::before,
.auth-divider::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.auth-guest-btn { width: 100%; margin-top: 0; }

/* ═══ Cronômetro arrastável e redimensionável (web/modules/timer-drag.js) ═══ */
#timer {
  --timer-scale: 1;
  font-size: calc(12px * var(--timer-scale));
  padding: calc(10px * var(--timer-scale)) calc(14px * var(--timer-scale));
  min-width: calc(76px * var(--timer-scale));
  cursor: grab;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}
#timer.timer--custom:hover { transform: none; }
#timer.is-dragging {
  cursor: grabbing;
  transform: none;
  box-shadow: var(--shadow-lift);
  transition: none;
}
#timer.is-resizing { transition: none; }

.timer-resize-handle {
  position: fixed;
  z-index: calc(var(--z-timer) + 1);
  width: 24px;
  height: 24px;
  min-height: 0;
  padding: 0;
  margin: 0;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  cursor: nwse-resize;
  touch-action: none;
}
.timer-resize-handle::before {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  border-bottom-right-radius: 3px;
}
.timer-resize-handle:hover::before,
#timer.is-resizing + .timer-resize-handle::before { border-color: var(--accent-text); }
#timer:not(.running):not(.expired) + .timer-resize-handle { display: none; }

/* Ponteiro preciso: alça discreta, aparece no hover/foco */
@media (hover: hover) and (pointer: fine) {
  .timer-resize-handle {
    opacity: 0;
    transition: opacity var(--dur-base) var(--ease-out) 300ms;
  }
  #timer:hover + .timer-resize-handle,
  #timer:focus-visible + .timer-resize-handle,
  #timer.is-resizing + .timer-resize-handle,
  .timer-resize-handle:hover,
  .timer-resize-handle:focus-visible {
    opacity: 1;
    transition-delay: 0ms;
  }
}

@media (max-width: 768px) {
  #timer {
    font-size: calc(13px * var(--timer-scale));
    padding: calc(6px * var(--timer-scale)) calc(10px * var(--timer-scale));
    min-width: calc(62px * var(--timer-scale));
  }
  .timer-resize-handle {
    z-index: calc(var(--z-timer-mobile) + 1);
    width: 44px;
    height: 44px;
    min-height: 44px;
  }
}

/* Cronômetro movido: não reserva mais espaço no canto da barra superior */
@media (max-width: 1100px) {
  body:has(#timer.running.timer--custom) .hero-utils,
  body:has(#timer.expired.timer--custom) .hero-utils { margin-right: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .timer-resize-handle { transition: none; }
}

/* ─── Fundo animado em WebGL: cena "Frosty Gradient" (ver web/modules/backdrop.js) ── */
:root {
  /* Paleta original do tema claro no mesmo modelo: manchas verde-ciano e
     laranja sobre o papel, linhas teal. As manchas são claras para o texto
     manter AA por cima delas mesmo com o efeito forte. */
  --backdrop-base: #f4f0e8;
  --backdrop-a: #8ee8d4;
  --backdrop-b: #ffa647;
  --backdrop-line: #176b67;
  --backdrop-mix: 0.5;                 /* virada da cor A para a B: meio a meio */
  /* Força das manchas atrás do conteúdo, por cor, no limite do texto AA */
  --backdrop-calm: 0.64;
  --backdrop-calm-b: 0.30;
}
[data-theme="dark"] {
  /* Cores da cena original: cinza-preto, azul, roxo e linhas lavanda */
  --backdrop-base: #181818;
  --backdrop-a: #3a4bd9;
  --backdrop-b: #7c5cf0;
  --backdrop-line: #8f9bff;
  --backdrop-mix: 0.7;                 /* predomina o azul */
  --backdrop-calm: 0.47;
  --backdrop-calm-b: 0.35;
}

.backdrop {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--dur-slow) var(--ease-out);
}
.backdrop.is-running { opacity: 1; }
/* Estado vazio é transparente: com o fundo animado, ganha a mesma base dos cards */
.empty-state { background: var(--card-bg); }

@media (prefers-reduced-motion: reduce) {
  .backdrop { transition: none; }
}

@media print {
  .backdrop { display: none; }
}


/* ═══════════════════════════════════════════════════════════════════════════
   Acesso sem login: visitante, convidado e conta (feature/acesso-livre-convidado)
   Segue .claude/skills/landing-page-design (ver docs/DESIGN_SKILLS.md):
   tamanhos da escala (12/14/16/18/24), espaçamento da tabela, peso máx. 700,
   sem itálico, curva base var(--ease-out), cor/opacidade ≥ 200 ms.
   ═══════════════════════════════════════════════════════════════════════════ */

/* Pular para o conteúdo (teclado) */
.skip-link {
  position: absolute;
  left: var(--space-4);
  top: var(--space-4);
  z-index: calc(var(--z-overlay) + 1);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  background: var(--card-solid);
  color: var(--ink);
  font: 600 var(--text-sm) var(--font-sans);
  box-shadow: var(--shadow-md);
  transform: translateY(-200%);
  transition: transform 500ms var(--ease-out);
}
.skip-link:focus { transform: translateY(0); outline: 2px solid var(--line-focus); outline-offset: 2px; }

/* Cabeçalho do visitante: Entrar / Criar conta grátis */
.visitor-actions { display: inline-flex; align-items: center; gap: var(--space-2); }
.visitor-actions[hidden] { display: none; }
.visitor-actions .guest-action-link { min-height: 36px; padding: 0 var(--space-3); font-size: var(--text-sm); font-weight: 600; }
.guest-action-link {
  font-size: var(--text-sm);
  font-weight: 600;
  transition: background-color 300ms var(--ease-out), color 300ms var(--ease-out), transform 500ms var(--ease-out);
}
.guest-action-link:active { transform: scale(0.98); }
.guest-action-link:focus-visible,
.access-login-link:focus-visible,
.guest-ai-notice-link:focus-visible,
.auth-back-link:focus-visible {
  outline: 2px solid var(--line-focus);
  outline-offset: 2px;
}

/* Cota de IA do convidado no selo da sessão */
.guest-ai-chip {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 var(--space-2);
  border-radius: var(--radius-sm);
  background: var(--state-info-bg);
  color: var(--state-info-fg);
  font: 500 var(--text-xs) var(--font-mono);   /* dado numérico: mono permitido pela skill */
  white-space: nowrap;
}
.guest-ai-chip[hidden] { display: none; }
.guest-ai-chip--empty { background: var(--state-warning-bg); color: var(--state-warning-fg); }

/* Texto da home para quem ainda não entrou */
.intro--visitor { max-width: 680px; }
.intro--visitor p { margin: 0; }
.intro--visitor[hidden], .intro[hidden] { display: none; }
.intro-proof {
  margin-top: var(--space-2) !important;
  color: var(--ink);
  font: 600 var(--text-sm) var(--font-sans);
}
.intro-proof span[aria-hidden] { color: var(--muted); padding: 0 var(--space-1); }

/* Aviso do convidado dentro do modal de criação */
.guest-ai-notice {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-3);
  margin: var(--space-3) 0 var(--space-4);
  padding: var(--space-3) var(--space-4);
  border: 1px solid rgba(var(--teal-rgb), 0.28);
  border-radius: var(--radius-md);
  background: var(--state-info-bg);
  color: var(--ink);
  font-size: var(--text-sm);
  line-height: 20px;
  text-wrap: pretty;
}
.guest-ai-notice[hidden] { display: none; }
.guest-ai-notice--empty { background: var(--state-warning-bg); border-color: rgba(217, 119, 6, 0.32); }
.guest-ai-notice-link {
  color: var(--accent-text);
  font-weight: 600;
  white-space: nowrap;
  text-underline-offset: 3px;
}

/* ─── Modal de acesso ─────────────────────────────────────────────────────── */
.modal--access {
  max-width: 680px;
  padding: var(--space-6);
  text-align: left;
}
.access-badge {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 var(--space-2);
  border-radius: var(--radius-sm);
  background: var(--state-info-bg);
  color: var(--state-info-fg);
  font: 600 var(--text-xs) var(--font-sans);
}
.access-title {
  margin: var(--space-3) 0 var(--space-2);
  max-width: 560px;
  color: var(--ink);
  font: 700 24px/32px var(--font-sans);
  letter-spacing: -0.01em;
  text-wrap: balance;
}
.access-text {
  margin: 0;
  max-width: 560px;
  color: var(--muted);
  font-size: var(--text-md);
  line-height: 24px;
  text-wrap: pretty;
}
.access-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-top: var(--space-5);
}
.access-options--single { grid-template-columns: 1fr; }
.modal--access-compact { max-width: 480px; }
.access-badge--warning { background: var(--state-warning-bg); color: var(--state-warning-fg); }
.access-option {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--card-bg);
}
.access-option[hidden] { display: none; }
.access-option--account { border-color: rgba(var(--teal-rgb), 0.45); box-shadow: var(--shadow-sm); }
.access-option-head { display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); }
.access-option-title { margin: 0; color: var(--ink); font: 700 var(--text-lg)/28px var(--font-sans); }
.access-option-tag {
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
  background: rgba(var(--teal-rgb), 0.14);
  color: var(--teal);
  font: 600 var(--text-xs) var(--font-sans);
}
.access-perks {
  display: grid;
  gap: var(--space-2);
  margin: 0 0 var(--space-2);
  padding: 0;
  list-style: none;
  color: var(--ink);
  font-size: var(--text-sm);
  line-height: 20px;
}
.access-perks li { position: relative; padding-left: var(--space-5); text-wrap: pretty; }
.access-perks li::before {
  /* marca de "check" desenhada com bordas (sem fonte nem imagem externa) */
  content: "";
  position: absolute;
  left: 4px;
  top: 4px;
  width: 6px;
  height: 10px;
  border: solid var(--teal);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.access-option--guest .access-perks li::before { border-color: var(--muted); }
.access-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 44px;
  margin-top: auto;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font: 600 var(--text-md) var(--font-sans);
  text-decoration: none;
  transition: background-color 300ms var(--ease-out), border-color 300ms var(--ease-out),
    color 300ms var(--ease-out), transform 500ms var(--ease-out);
}
a.access-cta.primary:hover { color: var(--btn-primary-text); }
.access-cta:active { transform: scale(0.98); }
.access-cta:focus-visible { outline: 2px solid var(--line-focus); outline-offset: 2px; }
.access-cta:disabled { opacity: 0.6; cursor: progress; }
.access-login-link {
  align-self: center;
  color: var(--accent-text);
  font: 600 var(--text-sm) var(--font-sans);
  text-underline-offset: 3px;
}
#accessFeedback { margin-top: var(--space-4); }

[data-theme="dark"] .access-option { background: #1F1F1F; }
[data-theme="dark"] .access-option--account { background: #272727; }

@media (max-width: 640px) {
  .modal--access { padding: var(--space-5) var(--space-4); }
  .access-options { grid-template-columns: 1fr; }
  .access-title { font-size: 20px; line-height: 28px; padding-right: var(--space-6); }
  .visitor-actions .guest-action-link { min-height: 44px; }
}

/* Login e cadastro: caminho de volta para a home aberta */
.auth-back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 32px;
  margin-bottom: var(--space-3);
  color: var(--muted);
  font: 600 var(--text-sm) var(--font-sans);
  text-decoration: none;
  transition: color 300ms var(--ease-out);
}
.auth-back-link:hover { color: var(--ink); }
@media (max-width: 768px) {
  .auth-back-link { min-height: 44px; }
}

@media (prefers-reduced-motion: reduce) {
  .skip-link, .guest-action-link, .access-cta, .auth-back-link { transition: opacity 300ms var(--ease-out); }
  .access-cta:active, .guest-action-link:active { transform: none; }
}


/* ═══ Páginas institucionais, rodapé e Minha conta (LGPD) ═════════════════ */
.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-5) var(--space-4) var(--space-6);
  color: var(--muted);
  font-size: var(--text-sm);
}
.site-footer a, .footer-link {
  color: var(--muted);
  text-underline-offset: 3px;
  transition: color 300ms var(--ease-out);
}
.site-footer a:hover, .footer-link:hover { color: var(--ink); }
.footer-link {
  height: auto;
  min-height: 32px;
  padding: 0 var(--space-1);
  background: none;
  border: 0;
  font: inherit;
  text-decoration: underline;
  cursor: pointer;
}
.site-footer-account { display: inline-flex; align-items: center; gap: var(--space-2); }
.site-footer-account[hidden] { display: none; }
.login-body .site-footer { position: relative; }

.legal-body { min-height: 100vh; display: flex; flex-direction: column; }
.legal-page { flex: 1; width: 100%; max-width: 760px; margin: 0 auto; padding: var(--space-6) var(--space-4) 0; }
.legal-page--center { display: flex; align-items: center; justify-content: center; }
.legal-card {
  padding: var(--space-6);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--card-solid);
  box-shadow: var(--shadow-md);
  color: var(--ink);
  font-size: var(--text-md);
  line-height: 24px;
}
.legal-card--small { max-width: 480px; text-align: left; }
.legal-card p, .legal-card li { text-wrap: pretty; }
.legal-card h2 { margin: var(--space-5) 0 var(--space-2); font: 700 var(--text-lg)/28px var(--font-sans); }
.legal-card ul { padding-left: var(--space-5); }
.legal-card li + li { margin-top: var(--space-2); }
.legal-card a:not(.auth-back-link):not(.legal-cta) { color: var(--accent-text); text-underline-offset: 3px; }
.legal-title { margin: var(--space-2) 0 var(--space-1); font: 700 30px/36px var(--font-sans); text-wrap: balance; }
.legal-meta { margin: 0 0 var(--space-4); color: var(--muted); font-size: var(--text-sm); }
.legal-fill { padding: 0 var(--space-1); border-radius: 4px; background: var(--state-warning-bg); color: var(--state-warning-fg); font-weight: 600; }
.legal-table-wrap { overflow-x: auto; }
.legal-table { width: 100%; border-collapse: collapse; font-size: var(--text-sm); line-height: 20px; }
.legal-table th, .legal-table td { padding: var(--space-2) var(--space-3); border: 1px solid var(--line); text-align: left; vertical-align: top; }
.legal-table th { background: var(--kbd-bg); font-weight: 600; }
.legal-cta { display: inline-flex; margin-top: var(--space-4); padding: 0 var(--space-4); text-decoration: none; }
[data-theme="dark"] .legal-card { background: #1F1F1F; }

.auth-consent { margin: 0 0 var(--space-3); color: var(--muted); font-size: var(--text-xs); line-height: 16px; text-wrap: pretty; }

.account-section { margin-top: var(--space-5); padding-top: var(--space-4); border-top: 1px solid var(--line); display: flex; flex-direction: column; gap: var(--space-2); }
.account-hint { margin: 0; color: var(--muted); font-size: var(--text-sm); line-height: 20px; }
.account-section .access-cta { margin-top: var(--space-2); }
.account-delete-form { display: flex; flex-direction: column; gap: var(--space-2); margin-top: var(--space-2); }
.account-delete-form label { font: 600 var(--text-sm) var(--font-sans); color: var(--ink); }
.account-delete-form input { min-height: 44px; padding: 0 var(--space-3); border: 1px solid var(--input-border); border-radius: var(--radius-sm); background: var(--input-bg); color: var(--ink); font: 400 var(--text-md) var(--font-sans); }
.btn-danger { background: transparent; border: 1px solid var(--error); color: var(--error); cursor: pointer; }
.btn-danger:hover { background: var(--state-error-bg); }
.btn-danger:disabled { opacity: 0.6; cursor: progress; }

@media (max-width: 640px) {
  .legal-card { padding: var(--space-5) var(--space-4); }
  .legal-title { font-size: 24px; line-height: 32px; }
}

/* Temas de exemplo no "Gerar por tema" */
.topic-examples { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2); margin-top: var(--space-2); }
.topic-examples-label { color: var(--muted); font-size: var(--text-xs); }
.topic-chip {
  height: auto;
  min-height: 32px;
  padding: 0 var(--space-3);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--card-bg);
  color: var(--ink);
  font: 500 var(--text-xs) var(--font-sans);
  transition: border-color 300ms var(--ease-out), background-color 300ms var(--ease-out), transform 500ms var(--ease-out);
}
.topic-chip:hover { border-color: var(--teal); background: var(--state-info-bg); }
.topic-chip:active { transform: scale(0.98); }
.topic-chip:focus-visible { outline: 2px solid var(--line-focus); outline-offset: 2px; }
@media (max-width: 768px) { .topic-chip { min-height: 44px; } }

/* Entrar com Google: aparece só com o OAuth configurado */
.auth-google-btn { gap: var(--space-2); margin-bottom: var(--space-2); }
.auth-google-btn[hidden], .auth-divider[hidden] { display: none; }


/* ═══ Skill de design: passada global ═══════════════════════════════════════
   Mono só em números; rótulos em Manrope e caixa normal; um CTA principal por
   tela; esqueleto no lugar do spinner. Ver docs/DESIGN_SKILLS.md. */
.eyebrow, .quiz-picker-label, .custom-select-group-header, .section, .modal-tab-btn,
.modal-form-group label, .modal-form-row .form-group label, .drop-zone-types,
.user-role-badge, .form-group label, .tab-btn, .result-card-tag, .about-badge,
.comparison-table th, .toggle-btn, .focus-indicator, .catalog-badge, .catalog-card-badge,
.timer-presets-label, .auth-divider, .empty-state, .results-badge {
  font-family: var(--font-sans);
}
.quiz-picker-label, .modal-form-group label, .modal-form-row .form-group label,
.form-group label, .tab-btn, .timer-presets-label, .comparison-table th,
.drop-zone-types, .toggle-btn, .modal-tab-btn {
  text-transform: none;
  letter-spacing: 0;
  font-weight: 600;
}
.quiz-picker-label, .modal-form-group label, .modal-form-row .form-group label, .form-group label { font-size: 14px; }
.eyebrow { font-weight: 600; letter-spacing: 0.08em; }

/* Ações secundárias do topo em contorno: o único botão cheio é "Iniciar simulado" */
:root:not([data-theme="dark"]) {
  --btn-add-bg: transparent;
  --btn-add-color: var(--teal);
  --btn-add-hover-bg: rgba(var(--teal-rgb), 0.08);
  --btn-catalog-bg: transparent;
  --btn-catalog-color: var(--teal);
  --btn-catalog-hover-bg: rgba(var(--teal-rgb), 0.08);
}

/* Carregamento em esqueleto no formato das questões */
.upload-spinner { display: none; }
.upload-status { flex-direction: column; align-items: stretch; gap: var(--space-3); }
.upload-skeleton { display: grid; gap: var(--space-2); }
.upload-skeleton span {
  display: block;
  height: 12px;
  border-radius: var(--radius-sm);
  background: linear-gradient(90deg, rgba(var(--teal-rgb), 0.10) 0%, rgba(var(--teal-rgb), 0.22) 50%, rgba(var(--teal-rgb), 0.10) 100%);
  background-size: 200% 100%;
  animation: skeleton-wave 1.2s var(--ease-out) infinite;
}
.upload-skeleton span:nth-child(1) { width: 92%; height: 16px; }
.upload-skeleton span:nth-child(2) { width: 64%; }
.upload-skeleton span:nth-child(3) { width: 76%; }
.upload-skeleton span:nth-child(4) { width: 58%; }
@keyframes skeleton-wave { from { background-position: 100% 0; } to { background-position: -100% 0; } }
@media (prefers-reduced-motion: reduce) {
  .upload-skeleton span { animation: none; opacity: 0.8; }
}

.legal-cta { align-items: center; justify-content: center; height: 44px; font: 600 16px var(--font-sans); }

/* Login/cadastro: rodapé abaixo do cartão, não ao lado */
.login-body { flex-direction: column; }
.login-body .site-footer { padding-bottom: var(--space-2); }

/* "Finalizar simulado" da barra vira ação secundária: o botão cheio da tela é
   "Iniciar simulado" antes da prova e "Conferir respostas" no fim */
.btn-quick-submit {
  background: transparent;
  border: 1px solid var(--coral);
  color: var(--accent-text);
}
.btn-quick-submit:hover { background: var(--coral-glow); color: var(--accent-text); }