/* ============================================================
   MosmanLAB — Provas UNESP · CSS externo
   Prof. Edson Mosman · mosmanlab.com.br
   ============================================================ */

:root {
  --bg: #0d0d0f;
  --bg2: #141418;
  --bg3: #1c1c22;
  --border: #2a2a35;
  --text: #e8e8f0;
  --text-muted: #8888a8;
  --accent: #00c896;
  --accent2: #0099ff;
  --accent-warm: #f5a623;
  --danger: #ff5c5c;
  --font-serif: 'Lora', Georgia, serif;
  --font-sans: 'DM Sans', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
}

/* URGENCY BAR */
.urgency-bar {
  background: linear-gradient(90deg, #1a3a1a, #0d2d1a);
  border-bottom: 1px solid var(--accent);
  text-align: center;
  padding: 10px 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.02em;
}
.urgency-bar a { color: #fff; text-decoration: underline; margin-left: 8px; }

/* NAV */
nav {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-logo {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }
.nav-cta {
  background: var(--accent);
  color: #000 !important;
  padding: 8px 18px;
  border-radius: 6px;
  font-weight: 600 !important;
}
.nav-cta:hover { opacity: 0.9; }

/* BREADCRUMB */
.breadcrumb {
  padding: 14px 40px;
  font-size: 13px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  background: var(--bg2);
}
.breadcrumb a { color: var(--text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { margin: 0 6px; }

/* HERO */
.hero {
  padding: 60px 40px 48px;
  max-width: 1100px;
  margin: 0 auto;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(0,200,150,0.1);
  border: 1px solid rgba(0,200,150,0.25);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 20px;
}
.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.hero h1 em { font-style: normal; color: var(--accent); }
.hero-intro {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 720px;
  line-height: 1.8;
  margin-bottom: 32px;
}
.hero-stats { display: flex; gap: 32px; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; }
.stat-number {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}
.stat-label { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* SECTION */
section { max-width: 1100px; margin: 0 auto; padding: 0 40px 60px; }
.section-title {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.section-subtitle { font-size: 15px; color: var(--text-muted); margin-bottom: 32px; }
.section-divider { border: none; border-top: 1px solid var(--border); margin-bottom: 48px; }

/* ANALYSIS GRID */
.analysis-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

/* CARD */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  margin-bottom: 24px;
}
.card-title {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}
.card-desc { font-size: 13px; color: var(--text-muted); margin-bottom: 20px; }

/* CHART */
.chart-container { position: relative; height: 260px; }

/* TOPIC BARS */
.topic-bars { display: flex; flex-direction: column; gap: 10px; }
.topic-row { display: flex; align-items: center; gap: 10px; }
.topic-name {
  font-size: 13px;
  color: var(--text-muted);
  min-width: 210px;
  flex-shrink: 0;
}
.topic-bar-wrap {
  flex: 1;
  background: var(--bg3);
  border-radius: 4px;
  height: 8px;
  overflow: hidden;
}
.topic-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 1.2s ease;
}
.topic-pct {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  min-width: 80px;
  text-align: right;
  white-space: nowrap;
}
.topic-note {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  font-style: italic;
  line-height: 1.6;
}

/* COMMENTARY */
.commentary {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 0 12px 12px 0;
  padding: 28px 32px;
  margin-bottom: 24px;
}
.commentary-header { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.professor-badge {
  background: rgba(0,200,150,0.15);
  border: 1px solid rgba(0,200,150,0.3);
  border-radius: 50px;
  padding: 4px 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.04em;
}
.commentary p { font-size: 15.5px; color: var(--text); line-height: 1.85; margin-bottom: 12px; }
.commentary p:last-child { margin-bottom: 0; }

/* DIFF TABLE */
.diff-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.diff-table thead th {
  background: var(--bg3);
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.diff-table tbody tr { border-bottom: 1px solid var(--border); transition: background 0.15s; }
.diff-table tbody tr:hover { background: var(--bg3); }
.diff-table tbody td { padding: 11px 16px; color: var(--text); }
.diff-table tbody td:first-child {
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--accent);
}

/* BADGES */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.badge-easy { background: rgba(0,200,150,0.15); color: var(--accent); }
.badge-med  { background: rgba(245,166,35,0.15); color: var(--accent-warm); }
.badge-hard { background: rgba(255,92,92,0.15);  color: var(--danger); }
.badge-soon {
  background: var(--bg3);
  color: var(--text-muted);
  border: 1px dashed var(--border);
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 4px;
}
.topic-pill {
  display: inline-block;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 11px;
  padding: 2px 7px;
  color: var(--text-muted);
  margin: 2px 2px 2px 0;
}

/* PROVAS LIST */
.provas-wrap {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.provas-list { display: flex; flex-direction: column; }
.prova-row {
  display: grid;
  grid-template-columns: 80px 1fr auto auto;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
}
.prova-row:last-child  { border-bottom: none; }
.prova-row:hover { background: var(--bg3); }
.prova-year {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
}
.prova-info { display: flex; flex-direction: column; gap: 4px; }
.prova-title { font-size: 15px; font-weight: 500; color: var(--text); }
.prova-tags { display: flex; flex-wrap: wrap; gap: 4px; }
.coming-soon { opacity: 0.45; pointer-events: none; }

/* BUTTONS */
.btn-preview {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 13px;
  font-family: var(--font-sans);
  padding: 7px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.btn-preview:hover { border-color: var(--accent2); color: var(--accent2); }
.btn-download {
  background: var(--accent);
  color: #000;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font-sans);
  padding: 7px 16px;
  border-radius: 6px;
  text-decoration: none;
  transition: opacity 0.2s;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 6px;
}
.btn-download:hover { opacity: 0.85; }

/* FILTER BAR */
.filter-bar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 20px; }
.filter-btn {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 13px;
  font-family: var(--font-sans);
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}
.filter-btn:hover, .filter-btn.active {
  background: rgba(0,200,150,0.1);
  border-color: var(--accent);
  color: var(--accent);
}

/* MODAL */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.8);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 16px;
  width: 100%;
  max-width: 900px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}
.modal-title { font-family: var(--font-serif); font-size: 18px; color: var(--text); }
.modal-close {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text-muted);
  width: 32px; height: 32px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-body { flex: 1; overflow: hidden; display: flex; flex-direction: column; }
.pdf-placeholder {
  flex: 1;
  background: var(--bg3);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 40px;
  color: var(--text-muted);
  min-height: 400px;
}
.pdf-placeholder .icon { font-size: 48px; }
.pdf-placeholder p { font-size: 15px; text-align: center; }
.pdf-placeholder small { font-size: 13px; opacity: 0.6; }
.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* FAQ */
.faq-list { display: flex; flex-direction: column; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-question {
  width: 100%;
  background: none;
  border: none;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  text-align: left;
  padding: 18px 0;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: color 0.2s;
}
.faq-question:hover { color: var(--accent); }
.faq-icon { flex-shrink: 0; font-size: 20px; transition: transform 0.2s; }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
  display: none;
  font-size: 15px;
  color: var(--text-muted);
  padding-bottom: 18px;
  line-height: 1.8;
}
.faq-item.open .faq-answer { display: block; }

/* FOOTER */
footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 32px 40px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}
footer a { color: var(--text-muted); }

/* REFS */
.refs-section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 40px 60px;
}
.refs-section h2 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 16px;
  margin-top: 40px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}
.refs-section ol {
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.refs-section li { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* RESPONSIVE */
@media (max-width: 768px) {
  .analysis-grid { grid-template-columns: 1fr; }
  nav { padding: 0 20px; }
  .nav-links { gap: 12px; }
  .nav-links a:not(.nav-cta) { display: none; }
  .hero, section { padding-left: 20px; padding-right: 20px; }
  .breadcrumb { padding-left: 20px; }
  .prova-row { grid-template-columns: 60px 1fr auto; }
  .btn-preview { display: none; }
  .refs-section { padding-left: 20px; padding-right: 20px; }
}