/* ============================================================
   SIMULADOS CONCURSOS — Design System Global
   Inspirado no Concurseiro AI (quest-iq-ai.lovable.app)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ── VARIÁVEIS ─────────────────────────────────────────── */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --primary-50: #eff6ff;
  --primary-100: #dbeafe;
  --secondary: #10b981;
  --secondary-dark: #059669;
  --gradient-primary: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  --gradient-hero: linear-gradient(135deg, #1e40af 0%, #2563eb 50%, #0ea5e9 100%);
  --gradient-accent: linear-gradient(135deg, #2563eb 0%, #10b981 100%);
  --gradient-card: linear-gradient(135deg, #eff6ff 0%, #f0fdf4 100%);

  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-card: #ffffff;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-on-primary: #ffffff;

  --border-color: #e2e8f0;
  --border-radius: 12px;
  --border-radius-sm: 8px;
  --border-radius-lg: 20px;
  --border-radius-xl: 28px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,.08);
  --shadow-lg: 0 10px 40px rgba(37,99,235,.12);
  --shadow-xl: 0 20px 60px rgba(37,99,235,.18);
  --shadow-card: 0 2px 12px rgba(0,0,0,.06), 0 0 0 1px rgba(0,0,0,.03);

  --header-h: 68px;
  --transition: .2s cubic-bezier(.4,0,.2,1);
  --transition-slow: .4s cubic-bezier(.4,0,.2,1);

  --correct: #10b981;
  --correct-bg: #ecfdf5;
  --correct-border: #6ee7b7;
  --wrong: #ef4444;
  --wrong-bg: #fef2f2;
  --wrong-border: #fca5a5;
}

/* ── RESET ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; outline: none; }
input, select, textarea { font-family: inherit; border: none; outline: none; }

/* ── UTILITÁRIOS ───────────────────────────────────────── */
.hidden { display: none !important; }
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.gap-6 { gap: 24px; }
.text-center { text-align: center; }
.w-full { width: 100%; }
.relative { position: relative; }
.absolute { position: absolute; }

/* ── BOTÕES ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--border-radius-sm);
  font-weight: 600;
  font-size: 14px;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(37,99,235,.35);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(37,99,235,.45);
}
.btn-secondary {
  background: var(--bg-primary);
  color: var(--primary);
  border: 1.5px solid var(--border-color);
}
.btn-secondary:hover {
  background: var(--primary-50);
  border-color: var(--primary-light);
}
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}
.btn-ghost:hover { background: var(--bg-tertiary); color: var(--text-primary); }
.btn-lg { padding: 14px 28px; font-size: 15px; border-radius: var(--border-radius); }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-icon { padding: 8px; border-radius: var(--border-radius-sm); }
.btn-success {
  background: linear-gradient(135deg, #10b981, #059669);
  color: #fff;
  box-shadow: 0 4px 14px rgba(16,185,129,.35);
}
.btn-danger {
  background: linear-gradient(135deg, #ef4444, #dc2626);
  color: #fff;
  box-shadow: 0 4px 14px rgba(239,68,68,.3);
}

/* ── CARDS ─────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}
.card:hover { box-shadow: var(--shadow-md); }
.card-body { padding: 20px; }

/* ── BADGE ─────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .3px;
}
.badge-blue { background: var(--primary-100); color: var(--primary-dark); }
.badge-green { background: #dcfce7; color: #15803d; }
.badge-orange { background: #ffedd5; color: #c2410c; }
.badge-red { background: #fee2e2; color: #b91c1c; }
.badge-purple { background: #f3e8ff; color: #7c3aed; }
.badge-gray { background: var(--bg-tertiary); color: var(--text-secondary); }

/* ── ESPAÇOS PUBLICITÁRIOS ─────────────────────────────── */
.ad-slot {
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  border: 1.5px dashed #cbd5e1;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
  color: #94a3b8;
  font-size: 12px;
  font-weight: 500;
  text-align: center;
  transition: background var(--transition);
}
.ad-slot:hover { background: #f1f5f9; }
.ad-slot .ad-label { font-size: 10px; text-transform: uppercase; letter-spacing: 1px; opacity: .7; }
.ad-slot-banner { width: 100%; height: 90px; }
.ad-slot-sidebar { width: 100%; min-height: 250px; }
.ad-slot-footer { width: 100%; height: 90px; }
.ad-slot svg { width: 24px; height: 24px; opacity: .4; }

/* ── HEADER ────────────────────────────────────────────── */
#main-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  height: var(--header-h);
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
  color: var(--text-primary);
  flex-shrink: 0;
}
.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(37,99,235,.3);
}
.logo-icon svg { width: 20px; height: 20px; color: #fff; }
.logo span.brand-1 { color: var(--primary); }
.logo span.brand-2 { color: var(--text-secondary); font-weight: 500; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}
.nav-link {
  padding: 8px 14px;
  border-radius: var(--border-radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
  white-space: nowrap;
}
.nav-link:hover, .nav-link.active {
  color: var(--primary);
  background: var(--primary-50);
}

.header-actions { display: flex; align-items: center; gap: 10px; }
.btn-login {
  background: var(--gradient-primary);
  color: #fff;
  padding: 8px 18px;
  border-radius: var(--border-radius-sm);
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(37,99,235,.25);
  transition: all var(--transition);
}
.btn-login:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(37,99,235,.35);
}

/* Menu mobile toggle */
.mobile-menu-btn {
  display: none;
  padding: 8px;
  background: var(--bg-tertiary);
  border-radius: var(--border-radius-sm);
}
.mobile-menu-btn svg { width: 20px; height: 20px; }

/* ── VIEWS (SPA) ───────────────────────────────────────── */
.view { display: none; }
.view.active { display: block; }

/* ── HERO SECTION ──────────────────────────────────────── */
.hero {
  background: linear-gradient(160deg, #0f172a 0%, #1e3a8a 40%, #1d4ed8 75%, #2563eb 100%);
  padding: 100px 24px 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(59,130,246,.25) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(16,185,129,.15) 0%, transparent 50%);
  pointer-events: none;
}
.hero-dots {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}
.hero-content {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.15);
  backdrop-filter: blur(8px);
  color: #bfdbfe;
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 24px;
}
.hero-badge svg { width: 14px; height: 14px; }
.hero h1 {
  font-size: clamp(30px, 5vw, 56px);
  font-weight: 800;
  color: #fff;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 20px;
}
.hero h1 .highlight {
  background: linear-gradient(90deg, #60a5fa, #34d399);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: clamp(16px, 2.5vw, 20px);
  color: #93c5fd;
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
}
.hero-actions .btn-hero-primary {
  background: #fff;
  color: var(--primary);
  padding: 16px 32px;
  border-radius: var(--border-radius);
  font-size: 16px;
  font-weight: 700;
  box-shadow: 0 8px 24px rgba(0,0,0,.2);
  transition: all var(--transition);
}
.hero-actions .btn-hero-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0,0,0,.3);
}
.hero-actions .btn-hero-secondary {
  background: rgba(255,255,255,.1);
  color: #fff;
  border: 1.5px solid rgba(255,255,255,.25);
  padding: 16px 32px;
  border-radius: var(--border-radius);
  font-size: 16px;
  font-weight: 600;
  backdrop-filter: blur(8px);
  transition: all var(--transition);
}
.hero-actions .btn-hero-secondary:hover {
  background: rgba(255,255,255,.18);
}

.hero-metrics {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}
.metric-card {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  backdrop-filter: blur(12px);
  border-radius: var(--border-radius-lg);
  padding: 24px 32px;
  text-align: center;
  transition: all var(--transition);
  min-width: 160px;
}
.metric-card:hover {
  background: rgba(255,255,255,.13);
  transform: translateY(-2px);
}
.metric-card .metric-value {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  line-height: 1;
  margin-bottom: 4px;
}
.metric-card .metric-label {
  font-size: 12px;
  color: #93c5fd;
  font-weight: 500;
}

/* ── SEÇÃO FEATURES ────────────────────────────────────── */
.section {
  padding: 80px 24px;
  max-width: 1280px;
  margin: 0 auto;
}
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-50);
  color: var(--primary);
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 16px;
  border: 1px solid var(--primary-100);
}
.section-header h2 {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -.5px;
  margin-bottom: 12px;
}
.section-header p {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 28px;
  transition: all var(--transition);
}
.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}
.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.feature-icon svg { width: 26px; height: 26px; }
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.65; }

/* ── DISCIPLINAS GRID ──────────────────────────────────── */
.disciplines-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}
.discipline-chip {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition);
  font-weight: 500;
  font-size: 14px;
}
.discipline-chip:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.discipline-chip .disc-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.discipline-chip .disc-icon svg { width: 20px; height: 20px; color: #fff; }

/* ── PÁGINA DE QUESTÕES ────────────────────────────────── */
.questoes-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 24px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px 24px;
  align-items: start;
}
.filters-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 20px;
  position: sticky;
  top: calc(var(--header-h) + 16px);
}
.filters-panel h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.filter-group {
  margin-bottom: 18px;
}
.filter-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 8px;
}
.filter-select {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-secondary);
  border: 1.5px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  transition: border-color var(--transition);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  cursor: pointer;
}
.filter-select:focus { border-color: var(--primary); background-color: var(--bg-card); }
.filter-input {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-secondary);
  border: 1.5px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  font-size: 13px;
  color: var(--text-primary);
  transition: border-color var(--transition);
}
.filter-input:focus { border-color: var(--primary); background: var(--bg-card); }
.filter-input::placeholder { color: var(--text-muted); }

.questoes-main { flex: 1; min-width: 0; }
.questoes-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}
.questoes-count {
  font-size: 14px;
  color: var(--text-secondary);
}
.questoes-count strong { color: var(--text-primary); }

/* Card de questão */
.questao-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 28px;
  margin-bottom: 20px;
  transition: all var(--transition);
}
.questao-card:hover { box-shadow: var(--shadow-md); }
.questao-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.questao-enunciado {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.alternativas { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }
.alternativa-btn {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 18px;
  border: 1.5px solid var(--border-color);
  border-radius: var(--border-radius);
  background: var(--bg-primary);
  text-align: left;
  font-size: 14px;
  color: var(--text-primary);
  line-height: 1.6;
  transition: all var(--transition);
  cursor: pointer;
  width: 100%;
}
.alternativa-btn:hover:not(:disabled) {
  border-color: var(--primary-light);
  background: var(--primary-50);
}
.alternativa-btn.selected {
  border-color: var(--primary);
  background: var(--primary-50);
}
.alternativa-btn.correct {
  border-color: var(--correct);
  background: var(--correct-bg);
  color: #065f46;
}
.alternativa-btn.wrong {
  border-color: var(--wrong);
  background: var(--wrong-bg);
  color: #7f1d1d;
}
.alternativa-btn.show-correct {
  border-color: var(--correct);
  background: var(--correct-bg);
}
.alternativa-letter {
  min-width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
  flex-shrink: 0;
  transition: all var(--transition);
}
.alternativa-btn.selected .alternativa-letter { background: var(--primary); color: #fff; }
.alternativa-btn.correct .alternativa-letter { background: var(--correct); color: #fff; }
.alternativa-btn.wrong .alternativa-letter { background: var(--wrong); color: #fff; }
.alternativa-btn:disabled { cursor: not-allowed; opacity: .85; }

.questao-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* Explicação da IA */
.ai-explanation {
  margin-top: 20px;
  border: 1.5px solid var(--primary-100);
  border-radius: var(--border-radius);
  overflow: hidden;
}
.ai-explanation-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background: linear-gradient(135deg, var(--primary-50), #f0fdf4);
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  color: var(--primary-dark);
  transition: background var(--transition);
}
.ai-explanation-header:hover { background: var(--primary-100); }
.ai-explanation-header svg { width: 18px; height: 18px; }
.ai-explanation-header .chevron { margin-left: auto; transition: transform var(--transition); }
.ai-explanation-header.open .chevron { transform: rotate(180deg); }
.ai-explanation-body {
  padding: 18px;
  background: var(--bg-card);
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
  border-top: 1px solid var(--primary-100);
  display: none;
}
.ai-explanation-body.open { display: block; animation: fadeInDown .3s ease; }

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── PAINEL DE ESTATÍSTICAS ────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: all var(--transition);
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.stat-icon svg { width: 24px; height: 24px; color: #fff; }
.stat-info .stat-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 4px;
}
.stat-info .stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}
.stat-info .stat-sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Gráfico de barras */
.chart-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 28px;
  margin-bottom: 24px;
}
.chart-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--text-primary);
}
.bar-chart {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  height: 160px;
}
.bar-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  height: 100%;
  justify-content: flex-end;
}
.bar-wrap {
  width: 100%;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 3px;
  flex: 1;
}
.bar {
  width: 42%;
  border-radius: 6px 6px 0 0;
  transition: height .6s cubic-bezier(.34,1.56,.64,1);
}
.bar-total { background: var(--primary-100); }
.bar-acerto { background: var(--gradient-primary); }
.bar-label { font-size: 11px; color: var(--text-muted); font-weight: 600; }

.progress-list { display: flex; flex-direction: column; gap: 16px; }
.progress-item {}
.progress-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 600;
}
.progress-bar-wrap {
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: 100px;
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  border-radius: 100px;
  background: var(--gradient-accent);
  transition: width .8s cubic-bezier(.34,1.56,.64,1);
}

/* ── PAINEL ADMIN ──────────────────────────────────────── */
.admin-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: calc(100vh - var(--header-h));
}
.admin-sidebar {
  background: #0f172a;
  padding: 28px 16px;
  position: sticky;
  top: var(--header-h);
  height: calc(100vh - var(--header-h));
  overflow-y: auto;
}
.admin-sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  padding: 0 8px;
  margin-bottom: 28px;
}
.admin-nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--border-radius-sm);
  color: #94a3b8;
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
  margin-bottom: 4px;
}
.admin-nav-link:hover, .admin-nav-link.active {
  background: rgba(255,255,255,.08);
  color: #fff;
}
.admin-nav-link svg { width: 18px; height: 18px; }
.admin-content { padding: 32px; background: var(--bg-secondary); }
.admin-page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 16px;
}
.admin-page-header h2 {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-primary);
}

/* Tabela admin */
.table-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  margin-bottom: 24px;
}
.data-table { width: 100%; border-collapse: collapse; }
.data-table th {
  background: var(--bg-tertiary);
  padding: 12px 16px;
  text-align: left;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}
.data-table td {
  padding: 14px 16px;
  font-size: 13px;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  vertical-align: top;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--bg-secondary); }
.data-table .td-enunciado {
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-secondary);
}
.table-actions { display: flex; gap: 8px; }

/* Formulário admin */
.form-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.form-modal {
  background: var(--bg-card);
  border-radius: var(--border-radius-xl);
  width: 100%;
  max-width: 720px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 30px 80px rgba(0,0,0,.25);
  animation: modalIn .3s cubic-bezier(.34,1.56,.64,1);
}
@keyframes modalIn {
  from { opacity: 0; transform: scale(.95) translateY(20px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 28px;
  border-bottom: 1px solid var(--border-color);
}
.modal-header h3 { font-size: 18px; font-weight: 700; }
.modal-body { padding: 28px; }
.form-group { margin-bottom: 18px; }
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 7px;
}
.form-control {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  font-size: 14px;
  color: var(--text-primary);
  background: var(--bg-primary);
  transition: border-color var(--transition);
}
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-50); }
textarea.form-control { resize: vertical; min-height: 80px; }
.form-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

/* ── LOGIN MODAL ───────────────────────────────────────── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
  padding: 24px;
}
.login-card {
  background: #fff;
  border-radius: var(--border-radius-xl);
  padding: 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 30px 80px rgba(0,0,0,.3);
}
.login-logo { text-align: center; margin-bottom: 28px; }
.login-logo .logo-icon { width: 56px; height: 56px; margin: 0 auto 12px; border-radius: 16px; }
.login-card h2 { font-size: 22px; font-weight: 800; margin-bottom: 8px; text-align: center; }
.login-card p { font-size: 14px; color: var(--text-secondary); text-align: center; margin-bottom: 28px; }
.login-footer { text-align: center; margin-top: 20px; font-size: 13px; color: var(--text-muted); }

/* ── FOOTER ────────────────────────────────────────────── */
#main-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 48px 24px 24px;
}
.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo { margin-bottom: 14px; }
.footer-brand .logo span { color: #fff; }
.footer-brand p { font-size: 14px; line-height: 1.7; max-width: 300px; }
.footer-col h4 { color: #fff; font-size: 14px; font-weight: 700; margin-bottom: 14px; }
.footer-col a {
  display: block;
  font-size: 13px;
  color: #94a3b8;
  margin-bottom: 8px;
  transition: color var(--transition);
}
.footer-col a:hover { color: #60a5fa; }
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
}
.footer-bottom span { color: #64748b; }

/* ── TOAST / NOTIFICAÇÕES ──────────────────────────────── */
.toast-container {
  position: fixed;
  top: calc(var(--header-h) + 16px);
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-radius: var(--border-radius);
  background: #fff;
  box-shadow: 0 8px 30px rgba(0,0,0,.15);
  border-left: 4px solid var(--primary);
  min-width: 280px;
  animation: slideInRight .3s ease;
  font-size: 14px;
  font-weight: 500;
}
.toast.success { border-color: var(--correct); }
.toast.error { border-color: var(--wrong); }
.toast svg { width: 18px; height: 18px; flex-shrink: 0; }
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ── LOADING SKELETON ──────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--border-radius-sm);
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── EMPTY STATE ───────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 60px 24px;
  color: var(--text-secondary);
}
.empty-state svg { width: 56px; height: 56px; color: var(--text-muted); margin: 0 auto 16px; }
.empty-state h3 { font-size: 18px; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.empty-state p { font-size: 14px; }

/* ── RESPONSIVO ────────────────────────────────────────── */
@media (max-width: 1024px) {
  .questoes-layout { grid-template-columns: 1fr; }
  .filters-panel { position: static; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .admin-layout { grid-template-columns: 1fr; }
  .admin-sidebar { display: none; }
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .mobile-menu-btn { display: flex; }
  .footer-top { grid-template-columns: 1fr; }
  .hero { padding: 64px 20px 60px; }
  .bar-chart { height: 120px; }
  .form-grid-2 { grid-template-columns: 1fr; }
  .hero-metrics { gap: 12px; }
  .metric-card { padding: 18px 22px; min-width: 130px; }
}

@media (max-width: 480px) {
  .data-table { font-size: 12px; }
  .data-table td, .data-table th { padding: 10px 12px; }
  .login-card { padding: 28px 20px; }
}