/* ═══ IDENTIDADE VISUAL — CLÃ BLACKMOON ═══
   Núcleo canônico: navy #0d1b2a · ouro #c9a961 · pergaminho #f5f0e1 · Georgia serif.
   Tema escuro é o canônico; o claro é derivação (pergaminho como fundo,
   navy como texto, ouro profundo nos títulos, botão invertido). */

/* ─── TOKENS ─── */
:root {
  --font-serif: Georgia, 'Times New Roman', serif;
  --font-label: Calibri, system-ui, sans-serif;
  --radius: 12px; --radius-sm: 8px; --radius-xs: 6px;

  --bg: #0d1b2a; --bg-elevated: #13263b; --text: #f5f0e1; --text-secondary: #c4bda8;
  --border: rgba(201,169,97,0.26); --surface: #1b3450;
  --accent: #c9a961;
  --gold: #c9a961; --gold-soft: #d9bd7e; --gold-dim: rgba(201,169,97,0.16);
  --success: #8fae88; --danger: #b5715a;
  --aurora: #16314c; --input-bg: #091522;
  --success-dim: rgba(143,174,136,0.12); --danger-dim: rgba(181,113,90,0.12);
  --shadow: 0 1px 3px rgba(0,0,0,0.35); --shadow-lg: 0 4px 24px rgba(0,0,0,0.45);
}
[data-theme="light"] {
  --bg: #f5f0e1; --bg-elevated: #fdfaf2; --text: #0d1b2a; --text-secondary: #6f6752;
  --border: rgba(138,109,46,0.3); --surface: #ece5d2;
  --accent: #0d1b2a;
  --gold: #7d6229; --gold-soft: #806628; --gold-dim: rgba(138,109,46,0.14);
  --success: #4f6c49; --danger: #a05540;
  --aurora: #fdfaf1; --input-bg: #fffef9;
  --success-dim: rgba(92,125,85,0.12); --danger-dim: rgba(160,85,64,0.12);
  --shadow: 0 1px 3px rgba(61,48,16,0.10); --shadow-lg: 0 4px 20px rgba(61,48,16,0.14);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--font-serif);
  background: radial-gradient(1100px 560px at 50% -8%, var(--aurora) 0%, transparent 58%), var(--bg);
  color: var(--text); line-height: 1.6; min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  transition: background .3s ease, color .3s ease;
}
a { color: inherit; text-decoration: none; }
b, strong { color: var(--gold-soft); }

/* ─── ANIMATIONS ─── */
@keyframes fadeIn { from { opacity:0; transform:translateY(12px) } to { opacity:1; transform:translateY(0) } }
@keyframes slideInRight { from { opacity:0; transform:translateX(20px) } to { opacity:1; transform:translateX(0) } }
@keyframes toastIn { from { opacity:0; transform:translateY(-20px) } to { opacity:1; transform:translateY(0) } }
@keyframes pulse { 0%,100% { opacity:1 } 50% { opacity:.6 } }
.animate-fade { animation: fadeIn .4s ease both; }
.animate-slide { animation: slideInRight .35s ease both; }

/* ─── LAYOUT ─── */
.app-layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 240px; background: var(--bg-elevated); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; padding: 22px 12px; flex-shrink: 0;
  transition: background .3s ease, border-color .3s ease;
}
.sidebar-brand {
  display: flex; align-items: center; gap: 10px; padding: 0 8px 22px;
  font-size: 21px; font-weight: normal; color: var(--gold); letter-spacing: 0.5px;
}
.sidebar-brand .logo-icon {
  width: 32px; height: 32px; background: transparent; color: var(--gold);
  border: 1px solid var(--gold); border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 17px; font-weight: normal;
}
.sidebar-nav { display: flex; flex-direction: column; gap: 4px; }
.nav-item {
  display: flex; align-items: center; gap: 12px; padding: 11px 14px;
  border-radius: var(--radius-sm); color: var(--text-secondary);
  font-family: var(--font-label); font-size: 11.5px; letter-spacing: 2px; text-transform: uppercase;
  transition: all .15s ease; cursor: pointer; position: relative;
}
.nav-item:hover { background: var(--gold-dim); color: var(--text); }
.nav-item.active { background: var(--gold-dim); color: var(--gold); font-weight: bold; }
.nav-item.active::before {
  content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 3px; height: 20px; background: var(--gold); border-radius: 0 3px 3px 0;
}
.nav-item svg { flex-shrink: 0; opacity: .65; transition: opacity .15s; }
.nav-item:hover svg, .nav-item.active svg { opacity: 1; }

.main-content { flex: 1; overflow: auto; }
.topbar {
  height: 64px; background: var(--bg-elevated); border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 28px; position: sticky; top: 0; z-index: 10;
  transition: background .3s ease, border-color .3s ease;
}
.topbar-title { font-size: 20px; font-weight: normal; color: var(--gold); letter-spacing: 0.3px; }
.topbar-actions { display: flex; align-items: center; gap: 12px; }
.topbar-user { display: flex; align-items: center; gap: 12px; font-size: 14px; color: var(--text-secondary); }
.avatar {
  width: 34px; height: 34px; border-radius: 50%; background: var(--gold-dim);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: bold; color: var(--gold);
  border: 1px solid var(--border); transition: all .3s ease;
  font-family: var(--font-label);
}
.page { padding: 28px; max-width: 1200px; animation: fadeIn .4s ease both; }

/* Títulos de seção: serifa, peso normal, ouro — nunca bold. */
h1, h2, h3 { font-weight: normal; color: var(--gold); }

/* ─── LEITURA (Ordem III): texto escuro precisa de mais ar que texto claro ─── */
.leitura {
  font-size: 17.5px; line-height: 1.75; color: var(--text);
  max-width: 68ch; /* medida de linha 62–72 caracteres */
}
.leitura p { margin: 1em 0; }
.leitura h3 {
  font-size: 1.28em; font-weight: normal; color: var(--gold);
  margin: 2.2em 0 0.6em; line-height: 1.3;
}
.leitura h3:first-child { margin-top: 0; }
.leitura ul, .leitura ol { margin: 1em 0; padding-left: 1.6em; }
.leitura li { margin: 0.45em 0; }
.leitura li p { margin: 0.3em 0; }
/* Destaque que guia sem faiscar: o peso marca, a cor fica perto do corpo. */
.leitura strong, .leitura b { color: var(--text); font-weight: bold; }
.leitura em { color: var(--gold-soft); }
.leitura pre {
  margin: 1em 0; padding: 14px 18px; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  overflow-x: auto; font-size: 0.82em; line-height: 1.6;
}

/* ─── LAYOUT DA AULA (Ordem III §4): coluna de leitura + navegação do curso ─── */
.aula-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 28px; }
.aula-nav-item {
  display: flex; align-items: center; gap: 10px; padding: 9px 10px;
  border-radius: var(--radius-sm); font-size: 13.5px; color: var(--text-secondary);
  border-left: 3px solid transparent;
}
.aula-nav-item:hover { background: var(--gold-dim); color: var(--text); }
.aula-nav-item.atual { background: var(--gold-dim); color: var(--gold-soft); border-left-color: var(--gold); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.aula-nav-check { width: 16px; height: 16px; border-radius: 50%; border: 1.5px solid var(--border); flex-shrink: 0; display: flex; align-items: center; justify-content: center; font-size: 9px; color: transparent; }
.aula-nav-check.done { border-color: var(--success); color: var(--success); }
@media (max-width: 900px) {
  .aula-layout { grid-template-columns: 1fr; }
  .aula-aside .sticky-col { position: static !important; }
}

/* ─── CARDS ─── */
.card {
  background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; transition: all .2s ease; box-shadow: var(--shadow);
}
.card:hover { box-shadow: var(--shadow-lg); }
.card-title { font-size: 16px; color: var(--gold-soft); margin-bottom: 4px; }
.card-desc { font-size: 14px; color: var(--text-secondary); }

/* ─── STATS ─── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 28px; }
.stat-card { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px 20px; box-shadow: var(--shadow); transition: all .2s ease; }
.stat-card:hover { box-shadow: var(--shadow-lg); }
.stat-value { font-size: 34px; font-weight: normal; color: var(--gold); line-height: 1; font-variant-numeric: tabular-nums; }
.stat-label { font-family: var(--font-label); font-size: 10.5px; letter-spacing: 2px; text-transform: uppercase; color: var(--text-secondary); margin-top: 10px; }

/* ─── PROGRESS ─── */
.progress-bg { height: 6px; border-radius: 3px; background: var(--gold-dim); overflow: hidden; }
.progress-fill { height: 100%; border-radius: 3px; background: var(--gold); transition: width .6s cubic-bezier(.4,0,.2,1); }

/* ─── BUTTONS ─── */
/* Caixa normal com peso médio (Ordem III §7): caixa-alta espaçada pesa no escuro. */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px; border-radius: var(--radius-sm);
  font-family: var(--font-label); font-size: 14px; font-weight: 600;
  letter-spacing: 0.2px;
  border: none; cursor: pointer; transition: all .15s ease; position: relative; overflow: hidden;
}
.btn::after { content: ""; position: absolute; inset: 0; background: rgba(255,255,255,0); transition: background .15s; }
.btn:hover::after { background: rgba(255,255,255,0.07); }
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--gold); color: #0d1b2a; }
[data-theme="light"] .btn-primary { background: #0d1b2a; color: #f5f0e1; }
.btn-secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--gold-dim); }
.btn-danger { background: var(--danger); color: #f5f0e1; }
.btn-success { background: var(--success); color: #0d1b2a; }
[data-theme="light"] .btn-success { color: #f5f0e1; }
.btn-ghost { background: transparent; color: var(--text-secondary); }
.btn-ghost:hover { background: var(--gold-dim); color: var(--gold-soft); }
.btn-sm { padding: 7px 14px; font-size: 13px; }
.btn-lg { padding: 14px 28px; font-size: 15px; }

/* ─── COURSE CARDS ─── */
.courses-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.course-card {
  background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: all .25s ease; box-shadow: var(--shadow);
}
.course-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); border-color: var(--gold); }
.course-img { height: 170px; background: var(--surface); background-size: cover; background-position: center; position: relative; }
.course-img::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(13,27,42,0.55), transparent); }
.course-badge {
  position: absolute; bottom: 12px; left: 12px; padding: 4px 10px;
  background: rgba(13,27,42,0.75); color: #d9bd7e;
  font-family: var(--font-label); font-size: 10px; letter-spacing: 1.5px; text-transform: uppercase;
  border-radius: var(--radius-xs); backdrop-filter: blur(4px); border: 1px solid rgba(201,169,97,0.3);
}
.course-body { padding: 18px; }
.course-title { font-size: 17px; color: var(--gold-soft); margin-bottom: 6px; }
.course-desc { font-size: 14px; color: var(--text-secondary); margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.55; }

/* ─── LESSON ─── */
.lesson-list { display: flex; flex-direction: column; gap: 0; }
.lesson-row {
  display: flex; align-items: center; gap: 14px; padding: 14px 12px;
  border-bottom: 1px dashed var(--border);
  cursor: pointer; transition: all .15s ease;
}
.lesson-row:last-child { border-bottom: none; }
.lesson-row:hover { background: var(--gold-dim); }
.lesson-row.active { background: var(--gold-dim); }
.lesson-check {
  width: 22px; height: 22px; border-radius: 50%; border: 1.5px solid var(--border);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  transition: all .2s ease; color: transparent;
}
.lesson-check.done { background: transparent; border-color: var(--success); color: var(--success); }
.lesson-duration { font-size: 12px; color: var(--text-secondary); margin-left: auto; }

/* ─── VIDEO ─── */
.video-wrap { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; border-radius: var(--radius); background: #091522; box-shadow: var(--shadow-lg); border: 1px solid var(--border); }
.video-wrap iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: none; }
/* Fundo sempre escuro nos dois temas: cor do texto fixa, não tokenizada. */
.video-placeholder { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; background: #091522; color: #c4bda8; font-size: 14px; flex-direction: column; gap: 12px; }

/* ─── QUIZ ─── */
.question-box { margin-bottom: 28px; animation: fadeIn .4s ease both; }
.question-text { font-size: 17px; color: var(--gold-soft); margin-bottom: 14px; line-height: 1.6; }
.option {
  display: flex; align-items: center; gap: 14px; padding: 14px 18px;
  border: 1px solid var(--border); border-radius: var(--radius-sm); margin-bottom: 10px;
  cursor: pointer; transition: all .15s ease; background: var(--bg-elevated);
}
.option:hover { border-color: var(--gold); }
.option.selected { border-color: var(--gold); background: var(--gold-dim); }
.option.correct { border-color: var(--success); background: var(--success-dim); }
.option.wrong { border-color: var(--danger); background: var(--danger-dim); }
.option-radio {
  width: 22px; height: 22px; border-radius: 50%; border: 1.5px solid var(--border);
  flex-shrink: 0; display: flex; align-items: center; justify-content: center;
  transition: all .15s ease;
}
.option.selected .option-radio { border-color: var(--gold); }
.option-radio::after { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--gold); opacity: 0; transition: opacity .15s ease; }
.option.selected .option-radio::after { opacity: 1; }

/* ─── QUIZ RESULT ─── */
.result-box { padding: 32px; border-radius: var(--radius); text-align: center; margin-bottom: 24px; animation: fadeIn .5s ease both; }
.result-pass { background: var(--success-dim); border: 1px solid var(--success); }
.result-fail { background: var(--danger-dim); border: 1px solid var(--danger); }
.result-score { font-size: 56px; font-weight: normal; line-height: 1; color: var(--gold); }
.result-subtitle { margin-top: 8px; font-size: 15px; font-style: italic; }

/* ─── CERTIFICATE ─── */
.certificate {
  background: radial-gradient(600px 300px at 50% -10%, #16314c 0%, transparent 60%), #0d1b2a;
  color: #f5f0e1; padding: 48px; border-radius: var(--radius); text-align: center;
  position: relative; overflow: hidden; box-shadow: var(--shadow-lg);
  border: 1px solid rgba(201,169,97,0.4);
}
.certificate::before { content: "✦ ☽ ✦"; font-size: 26px; color: #c9a961; letter-spacing: 8px; display: block; margin-bottom: 18px; opacity: .9; }
.certificate h2 { font-size: 27px; font-weight: normal; color: #c9a961; margin-bottom: 8px; }
.certificate p { color: rgba(245,240,225,0.75); font-size: 15px; }
.certificate-name { font-size: 24px; font-weight: normal; margin: 16px 0; color: #d9bd7e; font-style: italic; }

/* ─── RANKING ─── */
.rank-row {
  display: flex; align-items: center; gap: 16px; padding: 14px 18px;
  border-radius: var(--radius-sm); background: var(--bg-elevated); border: 1px solid var(--border);
  margin-bottom: 8px; transition: all .15s ease;
}
.rank-row:hover { border-color: var(--gold); }
.rank-pos { width: 32px; height: 32px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-family: var(--font-label); font-size: 13px; font-weight: bold; background: var(--gold-dim); color: var(--text-secondary); }
.rank-pos.gold { background: linear-gradient(135deg, #d9bd7e, #c9a961); color: #0d1b2a; }
.rank-pos.silver { background: linear-gradient(135deg, #d9d5c9, #a8a396); color: #0d1b2a; }
.rank-pos.bronze { background: linear-gradient(135deg, #b5715a, #96543f); color: #f5f0e1; }
.rank-bar { flex: 1; height: 8px; border-radius: 4px; background: var(--gold-dim); overflow: hidden; }
.rank-bar-fill { height: 100%; border-radius: 4px; background: var(--gold); transition: width .6s ease; }
.chart-bar { height: 8px; border-radius: 4px; background: var(--gold-dim); overflow: hidden; }
.chart-fill { height: 100%; border-radius: 4px; }

/* ─── LOGIN ─── */
.login-page {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: radial-gradient(1100px 560px at 50% -8%, var(--aurora) 0%, transparent 58%), var(--bg);
  padding: 24px;
}
.login-box { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 14px; padding: 44px 48px; width: 100%; max-width: 420px; box-shadow: var(--shadow-lg); }
.login-title { font-size: 30px; font-weight: normal; color: var(--gold); margin-bottom: 4px; text-align: center; line-height: 1.2; }
.login-subtitle { text-align: center; color: var(--text-secondary); font-size: 13.5px; font-style: italic; letter-spacing: 0.5px; margin-bottom: 28px; }
.form-group { margin-bottom: 18px; }
.form-label {
  display: block; font-family: var(--font-label); font-size: 10.5px; font-weight: bold;
  letter-spacing: 2px; text-transform: uppercase; margin-bottom: 6px; color: var(--text-secondary);
}
.form-input {
  width: 100%; padding: 12px 16px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 15px; font-family: var(--font-serif); transition: all .15s ease;
  background: var(--input-bg); color: var(--text);
}
.form-input::placeholder { color: var(--text-secondary); opacity: .55; }
.form-input:focus { outline: none; border-color: var(--gold); box-shadow: 0 0 0 3px var(--gold-dim); }
.form-error { color: var(--danger); font-size: 13.5px; margin-top: 6px; }
.form-hint { font-size: 12.5px; color: var(--text-secondary); margin-top: 6px; font-style: italic; }
.invite-note {
  display: flex; align-items: center; gap: 14px; padding: 14px 18px;
  border: 1px dashed var(--border); border-radius: var(--radius); margin-top: 22px;
}
.invite-note .moon { font-size: 15px; color: var(--gold); }
.invite-note span:last-child { font-size: 13px; color: var(--text-secondary); }

/* ─── TOAST ─── */
.toast-container { position: fixed; top: 20px; right: 20px; z-index: 1000; display: flex; flex-direction: column; gap: 10px; }
.toast {
  padding: 14px 20px; border-radius: var(--radius-sm); font-size: 14px;
  box-shadow: var(--shadow-lg); animation: toastIn .3s ease both; min-width: 280px;
  display: flex; align-items: center; gap: 10px; backdrop-filter: blur(10px);
  border: 1px solid var(--border); background: var(--bg-elevated); color: var(--text);
}
.toast-success { border-color: var(--success); color: var(--success); }
.toast-error { border-color: var(--danger); color: var(--danger); }
.toast-info { border-color: var(--gold); color: var(--gold-soft); }

/* ─── DARK MODE TOGGLE ─── */
.theme-toggle {
  width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--border);
  background: transparent; color: var(--gold); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all .2s ease;
}
.theme-toggle:hover { background: var(--gold-dim); transform: rotate(15deg); }

/* ─── ACTIVITY ─── */
.activity-row { display: flex; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px dashed var(--border); }
.activity-row:last-child { border-bottom: none; }
.activity-avatar { width: 36px; height: 36px; border-radius: 50%; background: var(--gold-dim); display: flex; align-items: center; justify-content: center; font-family: var(--font-label); font-size: 13px; font-weight: bold; color: var(--gold); flex-shrink: 0; }
.activity-text { font-size: 14px; }
.activity-time { font-size: 12.5px; color: var(--text-secondary); font-style: italic; }

/* ─── BADGE ─── */
.badge { display: inline-flex; padding: 4px 10px; border-radius: var(--radius-xs); font-family: var(--font-label); font-size: 10.5px; font-weight: bold; letter-spacing: 1.5px; text-transform: uppercase; }
.badge-success { background: var(--success-dim); color: var(--success); }
.badge-warn { background: var(--danger-dim); color: var(--danger); }
.badge-danger { background: var(--danger-dim); color: var(--danger); }
.badge-gold { background: var(--gold-dim); color: var(--gold-soft); }

/* ─── PDF ─── */
.pdf-item { display: flex; align-items: center; gap: 12px; padding: 14px 18px; border-radius: var(--radius-sm); border: 1px solid var(--border); margin-bottom: 8px; background: var(--bg-elevated); transition: all .15s ease; color: var(--gold-soft); }
.pdf-item:hover { background: var(--gold-dim); border-color: var(--gold); }

/* ─── COMMENTS ─── */
.comment-box { display: flex; gap: 12px; margin-bottom: 16px; }
.comment-avatar { width: 36px; height: 36px; border-radius: 50%; background: var(--gold-dim); display: flex; align-items: center; justify-content: center; font-family: var(--font-label); font-size: 13px; font-weight: bold; color: var(--gold); flex-shrink: 0; }
.comment-body { flex: 1; }
.comment-header { display: flex; align-items: center; gap: 8px; margin-bottom: 4px; }
.comment-author { color: var(--gold-soft); font-size: 14px; }
.comment-time { font-size: 12px; color: var(--text-secondary); font-style: italic; }
.comment-text { font-size: 14.5px; color: var(--text); line-height: 1.6; }
.comment-input {
  width: 100%; padding: 12px 16px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 14.5px; resize: vertical; min-height: 80px; background: var(--input-bg); color: var(--text);
  font-family: var(--font-serif);
}
.comment-input:focus { outline: none; border-color: var(--gold); }

/* ─── ADMIN: BOARD DO CURSO ─── */
.outline-row {
  display: flex; align-items: center; gap: 12px; padding: 11px 4px;
  border-bottom: 1px dashed var(--border);
}
.outline-row:last-child { border-bottom: none; }
.outline-row.dragging { opacity: .4; }
.drag-handle { color: var(--text-secondary); opacity: .55; cursor: grab; display: flex; align-items: center; flex-shrink: 0; }
.outline-row:hover .drag-handle { opacity: 1; color: var(--gold); }
.row-num { font-family: var(--font-label); font-size: 13px; color: var(--text-secondary); width: 18px; text-align: right; font-variant-numeric: tabular-nums; flex-shrink: 0; }
.move-btn {
  border: none; background: transparent; color: var(--text-secondary); cursor: pointer;
  font-size: 9px; line-height: 1.2; padding: 1px 6px;
}
.move-btn:hover { color: var(--gold); }
.move-btn:disabled { opacity: .25; cursor: default; }
.block-gold { border-left: 3px solid var(--gold); border-radius: 0 var(--radius) var(--radius) 0; }

/* ─── ADMIN BUILDER ─── */
.builder-question { background: var(--bg); border: 1px solid var(--border); border-left: 3px solid var(--gold); border-radius: 0 var(--radius) var(--radius) 0; padding: 20px; margin-bottom: 16px; }
.builder-question-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; color: var(--gold-soft); }
.builder-options { display: flex; flex-direction: column; }
.builder-option { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.builder-option input[type="radio"] { accent-color: var(--gold); }

/* ─── MOBILE ─── */
.mobile-menu-btn { display: none; width: 40px; height: 40px; border-radius: 8px; border: 1px solid var(--border); background: transparent; color: var(--gold); align-items: center; justify-content: center; cursor: pointer; }
.mobile-overlay { display: none; position: fixed; inset: 0; background: rgba(5,12,20,0.6); z-index: 40; }
.mobile-sidebar { display: none; position: fixed; left: 0; top: 0; bottom: 0; width: 260px; background: var(--bg-elevated); border-right: 1px solid var(--border); z-index: 50; transform: translateX(-100%); transition: transform .3s ease; }
.mobile-sidebar.open { transform: translateX(0); }

@media (max-width: 768px) {
  .sidebar { display: none; }
  .mobile-menu-btn { display: flex; }
  .mobile-sidebar { display: flex; flex-direction: column; padding: 20px 12px; }
  .mobile-overlay.show { display: block; }
  .page { padding: 16px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .courses-grid { grid-template-columns: 1fr; }
  .topbar { padding: 0 16px; }
  .topbar-title { font-size: 17px; }
  .login-box { padding: 32px 24px; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .login-box { padding: 32px 24px; margin: 16px; }
}

/* ─── SCROLLBAR ─── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--gold); }

/* ─── SELECTION ─── */
::selection { background: var(--gold); color: #0d1b2a; }
[data-theme="light"] ::selection { color: #f5f0e1; }