/* ============================================================
   TADS-Simulado-SpringBootAPI — "blueprint" design system
   Variação temática (verde) do design system ADS-4S-TesteEngArqSoftware
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600;700&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap');

:root {
  color-scheme: light;

  --bg: #eef2f0;
  --bg-elev: #ffffff;
  --bg-sunken: #e3e9e6;
  --ink: #1b2b26;
  --ink-soft: #4a5b54;
  --ink-faint: #7d8b85;
  --line: #c7d3cd;
  --line-soft: #dbe3df;

  /* Accent = identidade do tema (Spring Boot API) — verde pinho, distinto do "good" */
  --accent: #1f6b52;
  --accent-strong: #154a39;
  --accent-tint: #dcefe4;

  /* Good/bad = estados semânticos de resposta, mantidos separados do accent */
  --good: #3f8f4f;
  --good-tint: #e6f3e1;
  --bad: #b5483f;
  --bad-tint: #f6e2e0;

  --font-display: 'IBM Plex Mono', ui-monospace, monospace;
  --font-body: 'IBM Plex Sans', system-ui, sans-serif;

  --radius: 6px;
  --shadow: 0 1px 2px rgba(27, 43, 38, 0.06), 0 8px 24px rgba(27, 43, 38, 0.05);
  --grid-size: 28px;
}

[data-theme="dark"] {
  color-scheme: dark;

  --bg: #0d1a16;
  --bg-elev: #142a22;
  --bg-sunken: #0a1410;
  --ink: #e7f2ec;
  --ink-soft: #a9c8ba;
  --ink-faint: #6d9484;
  --line: #244032;
  --line-soft: #1c3228;

  --accent: #5fb894;
  --accent-strong: #8ad4b0;
  --accent-tint: #163024;

  --good: #7ecb7a;
  --good-tint: #1f3020;
  --bad: #e0958c;
  --bad-tint: #331c1a;

  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.2s ease, color 0.2s ease;
}

a { color: var(--accent-strong); }
[data-theme="dark"] a { color: var(--accent); }

.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg-elev) 92%, transparent);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  max-width: 880px;
  margin: 0 auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  font-size: 0.72rem;
  letter-spacing: 0.03em;
}
.brand-name { color: var(--ink); }
.brand-name span { color: var(--accent-strong); font-weight: 500; }
[data-theme="dark"] .brand-name span { color: var(--accent); }

.site-nav { display: flex; align-items: center; gap: 18px; }
.site-nav a {
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--ink-soft);
  font-family: var(--font-display);
}
.site-nav a:hover { color: var(--accent-strong); }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  background: var(--bg-elev);
  color: var(--ink);
  border-radius: var(--radius);
  padding: 6px;
  cursor: pointer;
}
.theme-toggle:hover { border-color: var(--accent); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

/* ---------- Corner-tick card primitive ---------- */
.card {
  position: relative;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}
.card::before, .card::after {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  border-color: var(--accent);
  opacity: 0.6;
}
.card::before {
  top: -1px; left: -1px;
  border-top: 2px solid var(--accent);
  border-left: 2px solid var(--accent);
}
.card::after {
  bottom: -1px; right: -1px;
  border-bottom: 2px solid var(--accent);
  border-right: 2px solid var(--accent);
}

.eyebrow {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--accent-strong);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
[data-theme="dark"] .eyebrow { color: var(--accent); }
.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--accent);
}

/* ---------- Hero ---------- */
.hero {
  padding: 64px 0 40px;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  margin: 14px 0 10px;
  line-height: 1.2;
}
.hero p.lead {
  color: var(--ink-soft);
  max-width: 60ch;
  font-size: 1.02rem;
}

.meta-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}
.chip {
  font-family: var(--font-display);
  font-size: 0.78rem;
  border: 1px solid var(--line);
  background: var(--bg-sunken);
  color: var(--ink-soft);
  padding: 5px 10px;
  border-radius: 999px;
}
.chip strong { color: var(--ink); }

.hero-actions { margin-top: 26px; display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- Buttons ---------- */
.btn {
  font-family: var(--font-display);
  font-size: 0.88rem;
  padding: 11px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--accent);
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: transform 0.08s ease, background 0.15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); }
.btn-ghost { background: transparent; color: var(--accent-strong); }
[data-theme="dark"] .btn-ghost { color: var(--accent); }
.btn-ghost:hover { background: var(--accent-tint); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ---------- Pipeline ---------- */
.pipeline {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin: 18px 0 8px;
}
.pipeline-step {
  flex: 1 1 140px;
  border: 1px solid var(--line);
  background: var(--bg-sunken);
  padding: 14px 16px;
  font-family: var(--font-display);
  font-size: 0.82rem;
  position: relative;
  color: var(--ink-soft);
}
.pipeline-step .n {
  display: block;
  font-size: 0.7rem;
  color: var(--accent-strong);
  margin-bottom: 4px;
}
[data-theme="dark"] .pipeline-step .n { color: var(--accent); }
.pipeline-step + .pipeline-step::before {
  content: "→";
  position: absolute;
  left: -14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-weight: 700;
  background: var(--bg);
  z-index: 1;
}

/* ---------- Sections / chapters ---------- */
section { padding: 40px 0; }
.section-head { margin-bottom: 22px; }
.section-head h2 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin: 10px 0 6px;
}
.section-head p { color: var(--ink-soft); margin: 0; max-width: 62ch; }

.chapters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 14px;
}
.chapter-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  margin: 0 0 8px;
  color: var(--ink);
}
.chapter-card p {
  color: var(--ink-soft);
  font-size: 0.9rem;
  margin: 0 0 10px;
}
.chapter-card .count {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--accent-strong);
}
[data-theme="dark"] .chapter-card .count { color: var(--accent); }

/* ---------- Comparison table ---------- */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.compare-table th, .compare-table td {
  border-bottom: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}
.compare-table thead th {
  font-family: var(--font-display);
  background: var(--bg-sunken);
  color: var(--ink-soft);
  font-size: 0.78rem;
}
.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table td:first-child { font-family: var(--font-display); color: var(--accent-strong); white-space: nowrap; }
[data-theme="dark"] .compare-table td:first-child { color: var(--accent); }

/* ---------- Table wrapper (mobile overflow fix) ---------- */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius);
}
.table-wrap .compare-table { min-width: 560px; border-radius: 0; }

/* ---------- Note callout ---------- */
.note {
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  background: var(--bg-sunken);
  border-radius: var(--radius);
  padding: 14px 16px;
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin-top: 16px;
}
.note strong { color: var(--ink); font-family: var(--font-display); font-size: 0.82rem; display: block; margin-bottom: 6px; }
.note ul { margin: 6px 0 0; padding-left: 18px; }
.note li { margin-bottom: 4px; }

/* ---------- Tags ---------- */
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.tag {
  font-family: var(--font-display);
  font-size: 0.75rem;
  border: 1px solid var(--line);
  padding: 4px 9px;
  border-radius: 4px;
  color: var(--ink-soft);
}

/* ---------- Quiz ---------- */
.quiz-shell { padding: 40px 0 60px; }
.progress-wrap { margin-bottom: 20px; }
.progress-meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-display);
  font-size: 0.78rem;
  color: var(--ink-faint);
  margin-bottom: 6px;
}
.progress-track {
  height: 6px;
  background: var(--bg-sunken);
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--accent);
  width: 0%;
  transition: width 0.25s ease;
}

.score-pill {
  font-family: var(--font-display);
  font-size: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 10px;
  color: var(--ink-soft);
}

.question-card { padding: 28px; }
.question-eyebrow {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--ink-faint);
  margin-bottom: 10px;
}
.question-text {
  font-size: 1.1rem;
  margin: 0 0 20px;
  line-height: 1.45;
}

.alternatives { display: flex; flex-direction: column; gap: 10px; }
.alt {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  text-align: left;
  border: 1px solid var(--line);
  background: var(--bg-sunken);
  color: var(--ink);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  cursor: pointer;
  transition: border-color 0.12s ease, background 0.12s ease;
}
.alt:hover:not(:disabled) { border-color: var(--accent); }
.alt .letter {
  font-family: var(--font-display);
  font-size: 0.8rem;
  color: var(--ink-faint);
  border: 1px solid var(--line);
  border-radius: 4px;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.alt.is-correct { border-color: var(--good); background: var(--good-tint); }
.alt.is-correct .letter { border-color: var(--good); color: var(--good); }
.alt.is-wrong { border-color: var(--bad); background: var(--bad-tint); }
.alt.is-wrong .letter { border-color: var(--bad); color: var(--bad); }
.alt:disabled { cursor: default; }

.feedback {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  border: 1px solid var(--line);
  display: none;
}
.feedback.show { display: block; }
.feedback.correct { border-color: var(--good); background: var(--good-tint); color: var(--ink); }
.feedback.wrong { border-color: var(--bad); background: var(--bad-tint); color: var(--ink); }
.feedback .fb-label { font-family: var(--font-display); font-weight: 600; margin-right: 6px; }

.quiz-footer-actions { display: flex; justify-content: flex-end; margin-top: 20px; }

/* ---------- Results ---------- */
.results-card { padding: 36px; text-align: center; }
.results-score {
  font-family: var(--font-display);
  font-size: 3rem;
  color: var(--accent-strong);
  margin: 6px 0;
}
[data-theme="dark"] .results-score { color: var(--accent); }
.results-note { color: var(--ink-soft); max-width: 46ch; margin: 0 auto 20px; }
.results-actions { display: flex; justify-content: center; gap: 12px; margin-top: 22px; flex-wrap: wrap; }

/* ---------- Sources sheet (padrão do projeto referencial ADS-4S) ---------- */
.sheet {
  position: relative;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 36px;
}
.sheet .tick-tl, .sheet .tick-br {
  position: absolute;
  width: 16px;
  height: 16px;
  pointer-events: none;
}
.sheet .tick-tl { top: -1px; left: -1px; border-top: 2px solid var(--accent); border-left: 2px solid var(--accent); }
.sheet .tick-br { bottom: -1px; right: -1px; border-bottom: 2px solid var(--accent); border-right: 2px solid var(--accent); }
.sheet > h2 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin: 0 0 12px;
}
.sheet > p.sheet-lead { color: var(--ink-soft); max-width: 66ch; margin: 0 0 24px; }

.source-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 14px;
  margin-bottom: 28px;
}
.source-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  border: 1px solid var(--line);
  background: var(--bg-sunken);
  border-radius: var(--radius);
  padding: 16px 18px;
  text-decoration: none;
  transition: border-color 0.12s ease;
}
.source-item:hover { border-color: var(--accent); }
.file-tag {
  flex-shrink: 0;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-strong);
  background: var(--accent-tint);
  border-radius: 4px;
  padding: 4px 8px;
  white-space: nowrap;
}
[data-theme="dark"] .file-tag { color: var(--accent); }
.file-label { color: var(--ink); font-size: 0.95rem; font-weight: 600; line-height: 1.35; }

.source-citation {
  border-top: 1px solid var(--line);
  padding-top: 20px;
  color: var(--ink-soft);
  font-size: 0.92rem;
}
.source-note {
  color: var(--ink-faint);
  font-size: 0.86rem;
  margin-top: 12px;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 26px 0 40px;
  color: var(--ink-faint);
  font-size: 0.82rem;
}
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.footer-inner span { max-width: 60ch; }

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .header-inner { flex-wrap: wrap; gap: 10px; }
  .site-nav { gap: 12px; }
  .pipeline-step + .pipeline-step::before { display: none; }
  .question-card { padding: 20px; }
  .results-card { padding: 24px; }
  .hero-actions .btn,
  .results-actions .btn { flex: 1 1 auto; justify-content: center; }
}

.hidden { display: none !important; }