:root {
  --blue-900: #0b1f3a;
  --blue-800: #12325c;
  --blue-700: #1a4480;
  --blue-100: #e8f0fa;
  --yellow-500: #f5c518;
  --yellow-600: #dba106;
  --white: #ffffff;
  --gray-50: #f4f7fb;
  --gray-100: #eef2f7;
  --gray-200: #e2e8f0;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-800: #1e293b;
  --success: #059669;
  --success-bg: #ecfdf5;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 8px rgba(11, 31, 58, 0.06);
  --shadow: 0 8px 28px rgba(11, 31, 58, 0.08);
  --shadow-lg: 0 16px 40px rgba(11, 31, 58, 0.12);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --page-pad: clamp(1rem, 3vw, 1.75rem);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--gray-800);
  background:
    radial-gradient(ellipse 120% 80% at 50% -20%, rgba(26, 68, 128, 0.08), transparent 55%),
    var(--gray-50);
  line-height: 1.65;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue-700); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { width: min(1120px, 92vw); margin-inline: auto; }
.page-narrow { max-width: 480px; margin-inline: auto; padding-top: var(--page-pad); }
.page-medium { max-width: 720px; margin-inline: auto; padding-top: var(--page-pad); }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--yellow-500); padding: .5rem 1rem; z-index: 999;
}
.skip-link:focus { left: 1rem; top: 1rem; }

/* Header */
.site-header {
  background: linear-gradient(180deg, var(--blue-900) 0%, #0a192f 100%);
  color: var(--white);
  position: sticky; top: 0; z-index: 100;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.18);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .9rem 0; }
.logo { display: flex; align-items: center; gap: .65rem; color: var(--white); font-weight: 700; font-size: 1.12rem; text-decoration: none; letter-spacing: -0.02em; }
.logo:hover { text-decoration: none; color: var(--white); opacity: 0.95; }
.logo-mark { color: var(--yellow-500); display: flex; filter: drop-shadow(0 2px 4px rgba(0,0,0,.2)); }
.nav-main { display: flex; align-items: center; gap: .35rem; flex-wrap: wrap; }
.nav-main a {
  color: rgba(255, 255, 255, 0.88); font-weight: 600; font-size: .9rem; text-decoration: none;
  padding: .45rem .85rem; border-radius: 999px; transition: background .15s, color .15s;
}
.nav-main a:hover { color: var(--white); background: rgba(255, 255, 255, 0.1); text-decoration: none; }
.nav-main a.active { color: var(--blue-900); background: var(--yellow-500); box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15); }
.nav-toggle {
  display: none; background: rgba(255,255,255,.08); border: 0; cursor: pointer; padding: .55rem; border-radius: 8px;
}
.nav-toggle-bar, .nav-toggle-bar::before, .nav-toggle-bar::after {
  display: block; width: 22px; height: 2px; background: var(--white); position: relative; border-radius: 2px;
}
.nav-toggle-bar::before, .nav-toggle-bar::after { content: ""; position: absolute; left: 0; }
.nav-toggle-bar::before { top: -7px; }
.nav-toggle-bar::after { top: 7px; }

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-main {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    background: var(--blue-800); flex-direction: column; align-items: stretch; padding: .75rem;
    gap: .25rem; border-top: 1px solid rgba(255,255,255,.08);
  }
  .nav-main.is-open { display: flex; }
  .nav-main a { border-radius: var(--radius-sm); }
}

.site-main { min-height: 62vh; padding-bottom: 3.5rem; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  border-radius: 999px; border: 2px solid transparent; font-weight: 700;
  padding: .7rem 1.35rem; cursor: pointer; text-decoration: none;
  transition: transform .12s, background .15s, box-shadow .15s, border-color .15s;
  font-size: .95rem; line-height: 1.2;
}
.btn:active { transform: scale(.98); }
.btn-sm { padding: .45rem .95rem; font-size: .875rem; font-weight: 600; }
.btn-block { width: 100%; padding: .95rem 1.25rem; font-size: 1.05rem; }
.btn-primary {
  background: linear-gradient(180deg, #ffd54a 0%, var(--yellow-500) 45%, var(--yellow-600) 100%);
  color: var(--blue-900); border-color: var(--yellow-600);
  box-shadow: 0 4px 14px rgba(219, 161, 6, 0.35);
}
.btn-primary:hover {
  background: linear-gradient(180deg, var(--yellow-500) 0%, var(--yellow-600) 100%);
  text-decoration: none; box-shadow: 0 6px 18px rgba(219, 161, 6, 0.4);
}
.btn-outline { background: transparent; color: var(--white); border-color: rgba(255,255,255,.45); }
.btn-outline-dark { background: var(--white); color: var(--blue-900); border-color: var(--gray-200); box-shadow: var(--shadow-sm); }
.btn-outline-dark:hover { background: var(--blue-100); border-color: var(--blue-700); text-decoration: none; }
.btn-ghost { background: var(--white); color: var(--blue-900); border-color: var(--gray-200); }
.btn.is-loading { opacity: .7; pointer-events: none; }

.hero {
  background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-700) 100%);
  color: var(--white); padding: 3.5rem 0 4rem;
}
.hero-grid { display: grid; gap: 2rem; align-items: center; }
@media (min-width: 900px) { .hero-grid { grid-template-columns: 1.2fr 1fr; } }
.hero h1 { font-size: clamp(1.75rem, 4vw, 2.75rem); line-height: 1.15; margin: 0 0 1rem; }
.hero p { font-size: 1.05rem; opacity: .92; max-width: 36rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.5rem; }
.disclaimer {
  margin-top: 1.25rem; font-size: .85rem; opacity: .85;
  border-left: 3px solid var(--yellow-500); padding-left: .75rem;
}
.hero-card {
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius); padding: 1.5rem; backdrop-filter: blur(4px);
}
.stats-row { display: flex; gap: 1.5rem; flex-wrap: wrap; margin-top: 1rem; }
.stat-item strong { display: block; font-size: 1.5rem; color: var(--yellow-500); }

.section { padding: 3rem 0; }
.section-title { font-size: 1.75rem; color: var(--blue-900); margin: 0 0 .5rem; letter-spacing: -0.02em; }
.section-lead { color: var(--gray-500); margin: 0 0 2rem; max-width: 40rem; }

/* Cards */
.card-grid { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 1.35rem 1.4rem;
  border: 1px solid rgba(226, 232, 240, 0.9);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-700), var(--yellow-500));
  opacity: 0;
}
.card-grid .card::before { opacity: 1; }
.card-grid .card {
  transition: transform .2s ease, box-shadow .2s ease;
}
.card-grid .card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.card-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: linear-gradient(135deg, var(--blue-100), #fff);
  color: var(--blue-700); display: flex; align-items: center; justify-content: center;
  margin-bottom: .85rem; border: 1px solid rgba(26, 68, 128, 0.08);
}
.card h3 { margin: 0 0 .4rem; font-size: 1.08rem; color: var(--blue-900); letter-spacing: -0.01em; }
.card p { margin: 0; font-size: .92rem; color: var(--gray-500); line-height: 1.55; }
.card--action {
  margin-top: 1.25rem;
  padding: 1.5rem;
  box-shadow: var(--shadow);
  border-color: var(--gray-200);
}
.card--action::before { opacity: 1; }
.card--soft {
  background: linear-gradient(180deg, var(--white) 0%, var(--gray-50) 100%);
  margin-bottom: 1.25rem;
}
.card--soft::before { opacity: 0.85; height: 2px; }

.steps { display: grid; gap: 1rem; }
@media (min-width: 768px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.step-num {
  width: 36px; height: 36px; border-radius: 50%; background: var(--yellow-500);
  color: var(--blue-900); font-weight: 700; display: flex; align-items: center; justify-content: center; margin-bottom: .5rem;
}

.faq details {
  background: var(--white); border-radius: var(--radius); padding: 1rem 1.25rem;
  margin-bottom: .75rem; border: 1px solid var(--gray-200); box-shadow: var(--shadow-sm);
}
.faq summary { cursor: pointer; font-weight: 600; color: var(--blue-900); }

.site-footer {
  background: linear-gradient(180deg, #0a192f 0%, var(--blue-900) 100%);
  color: rgba(255,255,255,.82); padding-top: 2rem;
}
.footer-grid { display: grid; gap: 2rem; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.footer-title { font-size: .95rem; margin: 0 0 .5rem; color: var(--yellow-500); }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links a { color: rgba(255,255,255,.85); }
.text-muted { color: var(--gray-500); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  margin-top: 1.5rem; padding: 1.25rem 0 1.5rem; font-size: .875rem; line-height: 1.6;
}

.alert {
  padding: .9rem 1.1rem; border-radius: var(--radius-sm); margin: 1rem 0;
  font-size: .92rem; line-height: 1.5;
}
.alert-success { background: var(--success-bg); color: #065f46; border: 1px solid #a7f3d0; }
.alert-error { background: var(--danger-bg); color: #991b1b; border: 1px solid #fecaca; }
.alert-info { background: var(--blue-100); color: var(--blue-800); border: 1px solid #bfdbfe; }

.form-card {
  max-width: 420px; margin: 2rem auto; background: var(--white);
  padding: 2rem; border-radius: var(--radius); box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
}
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-weight: 600; margin-bottom: .35rem; font-size: .9rem; color: var(--blue-900); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: .7rem .85rem; border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm); font: inherit; background: var(--white);
  transition: border-color .15s, box-shadow .15s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--blue-700); box-shadow: 0 0 0 3px rgba(26, 68, 128, 0.15);
}
.form-actions { margin-top: 1.25rem; }
.form-hint { font-size: .85rem; color: var(--gray-500); line-height: 1.5; }

.page-header { padding: 1.5rem 0 1rem; }
.page-header--compact { padding-top: 0; }
.page-header h1 {
  margin: 0 0 .45rem; color: var(--blue-900);
  font-size: clamp(1.45rem, 4vw, 1.85rem); letter-spacing: -0.03em; line-height: 1.2;
}
.page-header p { margin: 0; }

.page-links { text-align: center; margin-top: 1.5rem; font-size: .95rem; }
.page-links a { font-weight: 600; }

/* Simulado */
.simulado-layout { max-width: 820px; margin: 0 auto; padding: var(--page-pad) 0 3rem; }
.simulado-top {
  display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: center;
  background: var(--white); padding: 1.1rem 1.35rem; border-radius: var(--radius);
  box-shadow: var(--shadow); border: 1px solid var(--gray-200);
  margin-bottom: 1rem; position: sticky; top: 4.25rem; z-index: 50;
}
.timer {
  font-variant-numeric: tabular-nums; font-weight: 800; color: var(--blue-900);
  font-size: 1.35rem; padding: .35rem .65rem; background: var(--gray-100); border-radius: 8px;
}
.timer.is-low { color: var(--danger); background: var(--danger-bg); animation: pulse 1s infinite; }
@keyframes pulse { 50% { opacity: .65; } }
.progress-bar { flex: 1; min-width: 120px; height: 10px; background: var(--gray-200); border-radius: 99px; overflow: hidden; }
.progress-bar span {
  display: block; height: 100%;
  background: linear-gradient(90deg, var(--yellow-500), #ffd54a);
  transition: width .35s ease;
  border-radius: 99px;
}

.questao-card {
  background: var(--white); border-radius: var(--radius); padding: 1.5rem 1.4rem;
  box-shadow: var(--shadow); border: 1px solid var(--gray-200);
}
.questao-card + .questao-card { margin-top: 0; }
.questao-card .questao-num,
.questao-card h2.questao-num { font-size: .8rem; margin: 0 0 .75rem; color: var(--gray-600); font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; }
.questao-card .questao-enunciado,
.questao-card > p { font-size: 1.08rem; color: var(--gray-800); line-height: 1.65; margin: 0 0 1rem; }
.questao-card h2:not(.questao-num) { font-size: 1.08rem; margin: .75rem 0 1rem; color: var(--gray-800); line-height: 1.65; font-weight: 600; text-transform: none; letter-spacing: normal; }
.badge-info { background: var(--blue-100); color: var(--blue-800); }
.questao-img { margin: 1rem 0; border-radius: var(--radius-sm); border: 1px solid var(--gray-200); box-shadow: var(--shadow-sm); }

.alt-list { list-style: none; padding: 0; margin: 0; display: grid; gap: .7rem; }
.alt-list label {
  display: flex; gap: .85rem; align-items: flex-start; padding: 1rem 1.05rem;
  border: 2px solid var(--gray-200); border-radius: var(--radius-sm); cursor: pointer;
  transition: border-color .15s, background .15s, box-shadow .15s;
  background: var(--white);
}
.alt-list label:hover { border-color: #94a3b8; background: var(--gray-50); }
.alt-list label:has(input:checked) {
  border-color: var(--blue-700); background: var(--blue-100);
  box-shadow: 0 0 0 1px rgba(26, 68, 128, 0.12);
}
.alt-list input:checked + .alt-text { font-weight: 600; color: var(--blue-900); }
.alt-list input { margin-top: .3rem; accent-color: var(--blue-700); width: 1.1rem; height: 1.1rem; flex-shrink: 0; }
.alt-text { line-height: 1.45; }

.sim-map {
  display: flex; flex-wrap: wrap; gap: .4rem; margin: 1rem 0 1.25rem; padding: 1rem;
  background: var(--white); border-radius: var(--radius); border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
}
.sim-map-btn {
  min-width: 2.25rem; height: 2.25rem; padding: 0 .4rem; font-size: .82rem; font-weight: 700;
  border: 1px solid var(--gray-200); border-radius: 8px; background: var(--gray-50); cursor: pointer;
  color: var(--blue-900); transition: all .12s;
}
.sim-map-btn:hover { border-color: var(--blue-700); background: var(--blue-100); transform: translateY(-1px); }
.sim-map-btn.is-current {
  border-color: var(--blue-700); background: var(--blue-700); color: #fff;
  box-shadow: 0 3px 10px rgba(26, 68, 128, 0.35);
}
.sim-map-btn.is-answered:not(.is-current) { background: var(--success-bg); border-color: #6ee7b7; color: #065f46; }

.sim-nav {
  display: flex; flex-wrap: wrap; gap: .75rem; justify-content: space-between;
  margin-top: 1.35rem; padding-top: 1rem; border-top: 1px solid var(--gray-200);
}
.revisao-flag {
  display: flex; align-items: center; gap: .5rem; margin-top: 1.15rem; font-size: .9rem;
  color: var(--gray-600); padding: .5rem .65rem; background: var(--gray-100); border-radius: 8px; width: fit-content;
}

/* Histórico / progresso */
.hist-stats {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: .85rem; margin: 1.35rem 0;
}
@media (min-width: 560px) { .hist-stats { grid-template-columns: repeat(4, 1fr); } }
.hist-stat {
  background: var(--white); border-radius: var(--radius); padding: 1.15rem 1rem; text-align: center;
  box-shadow: var(--shadow-sm); border: 1px solid var(--gray-200);
  transition: box-shadow .2s, transform .2s;
}
.hist-stat:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.hist-stat-num { display: block; font-size: 1.85rem; font-weight: 800; color: var(--blue-900); line-height: 1.1; letter-spacing: -0.03em; }
.hist-stat-ok { border-top: 3px solid var(--success); }
.hist-stat-ok .hist-stat-num { color: var(--success); }
.hist-stat-bad { border-top: 3px solid var(--danger); }
.hist-stat-bad .hist-stat-num { color: var(--danger); }
.hist-stat-label { font-size: .78rem; color: var(--gray-600); margin-top: .25rem; display: block; }

.hist-dica {
  border-left: 4px solid var(--yellow-500);
  background: linear-gradient(105deg, var(--white) 0%, #fffef8 100%);
  box-shadow: var(--shadow);
}
.hist-dica h2 { color: var(--blue-900); }
.hist-tema-list { list-style: none; padding: 0; margin: .65rem 0 0; display: grid; gap: .65rem; }
.hist-tema-list li {
  display: flex; flex-wrap: wrap; align-items: center; gap: .5rem;
  padding: .75rem .9rem; background: var(--gray-100); border-radius: var(--radius-sm);
  border: 1px solid var(--gray-200); font-size: .95rem;
}
.hist-tema-revisar li {
  display: list-item; list-style: disc; margin-left: 1.35rem; background: none;
  border: none; padding: .2rem 0; color: var(--gray-700);
}
.hist-list { display: grid; gap: .75rem; }
.hist-row {
  display: grid; gap: .4rem; text-decoration: none; color: inherit;
  transition: border-color .15s, box-shadow .15s, transform .15s;
  padding: 1.15rem 1.25rem;
}
.hist-row::before { opacity: 0.6; }
.hist-row:hover {
  border-color: var(--blue-700); box-shadow: var(--shadow);
  transform: translateY(-2px); text-decoration: none;
}
.hist-row-score { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; font-size: .95rem; }
.hist-row-detail { font-size: .85rem; color: var(--gray-600); }

/* Resultado */
.result-hero {
  text-align: center; padding: 2.25rem 1.5rem; background: var(--white);
  border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 1.5rem;
  border: 1px solid var(--gray-200);
  background: linear-gradient(180deg, var(--white) 0%, var(--gray-50) 100%);
}
.result-score { font-size: 3rem; font-weight: 800; color: var(--blue-900); }
.result-score.pass { color: var(--success); }
.result-score.fail { color: var(--danger); }
.review-item {
  margin-bottom: 1rem;
  padding: 1.25rem 1.35rem;
  transition: box-shadow .15s;
}
.review-item:hover { box-shadow: var(--shadow); }
.review-item.correct { border-left: 4px solid var(--success); background: linear-gradient(90deg, var(--success-bg) 0%, var(--white) 12%); }
.review-item.wrong { border-left: 4px solid var(--danger); background: linear-gradient(90deg, var(--danger-bg) 0%, var(--white) 12%); }

.badge {
  display: inline-block; padding: .25rem .65rem; border-radius: 999px;
  font-size: .72rem; font-weight: 700; letter-spacing: 0.02em; text-transform: uppercase;
}
.badge-success { background: #d1fae5; color: #065f46; }
.badge-danger { background: #fee2e2; color: #991b1b; }

.pagination { display: flex; gap: .5rem; flex-wrap: wrap; margin-top: 1.5rem; }
.pagination a, .pagination span {
  padding: .4rem .75rem; border-radius: 8px; border: 1px solid var(--gray-200); background: var(--white);
}
.pagination .current { background: var(--blue-900); color: var(--white); border-color: var(--blue-900); }

.table-wrap { overflow-x: auto; }
table.data-table { width: 100%; border-collapse: collapse; background: var(--white); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); }
table.data-table th, table.data-table td { padding: .75rem 1rem; text-align: left; border-bottom: 1px solid var(--gray-200); font-size: .9rem; }
table.data-table th { background: var(--blue-100); color: var(--blue-900); font-weight: 700; }

.chart-bar { display: flex; align-items: center; gap: .75rem; margin-bottom: .5rem; }
.chart-bar-track { flex: 1; height: 10px; background: var(--gray-200); border-radius: 99px; overflow: hidden; }
.chart-bar-fill { height: 100%; background: linear-gradient(90deg, var(--blue-700), #2563eb); }

.estudo-mg-info { font-size: .92rem; }
.estudo-mg-info a { font-weight: 600; }
.estudo-feedback {
  margin-top: 1.25rem; padding: 1.1rem 1.2rem; border-radius: var(--radius-sm);
  border: 1px solid var(--gray-200); background: var(--gray-50); line-height: 1.55;
}
.estudo-feedback--ok { border-color: #6ee7b7; background: var(--success-bg); }
.estudo-feedback--fail { border-color: #fca5a5; background: var(--danger-bg); }
.estudo-feedback--erro { border-color: #fca5a5; }
.estudo-filtro label { font-weight: 600; font-size: .9rem; color: var(--blue-900); display: block; margin-bottom: .5rem; }
.estudo-filtro select { min-width: min(100%, 220px); }

.prova-mg-list { margin: 1rem 0; padding-left: 1.25rem; line-height: 1.7; }
.prova-mg-card { border-left: 4px solid var(--yellow-500); }
.result-mg-score {
  font-size: clamp(2.5rem, 8vw, 3.25rem); font-weight: 800; color: var(--blue-900);
  line-height: 1; letter-spacing: -0.04em;
}
.result-mg-status { font-size: 1.4rem; font-weight: 800; margin: .65rem 0; letter-spacing: 0.06em; }
.result-mg-status.aprovado { color: var(--success); }
.result-mg-status.reprovado { color: var(--danger); }
.result-actions {
  display: flex; gap: .65rem; justify-content: center; flex-wrap: wrap; margin-top: 1.25rem;
}

.simulado-info-list {
  list-style: none; padding: 0; margin: 0 0 1.25rem; display: grid; gap: .5rem;
}
.simulado-info-list li {
  display: flex; align-items: center; gap: .5rem; font-size: .92rem; color: var(--gray-600);
  padding: .5rem .65rem; background: var(--gray-100); border-radius: 8px;
}
.simulado-info-list strong { color: var(--blue-900); }