:root {
  --bg:        #0a0d14;
  --surface:   #111521;
  --border:    #1e2638;
  --accent:    #3b82f6;
  --accent2:   #06b6d4;
  --gold:      #f59e0b;
  --text:      #e2e8f0;
  --muted:     #64748b;
  --pill-a:    rgba(59,130,246,.15);
  --pill-b:    rgba(6,182,212,.15);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed; inset: 0; z-index: 0;
  background-image:
    radial-gradient(ellipse 80% 60% at 15% 10%, rgba(59,130,246,.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 85% 80%, rgba(6,182,212,.10) 0%, transparent 55%),
    repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(255,255,255,.02) 40px),
    repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(255,255,255,.02) 40px);
  pointer-events: none;
}

.wrap { max-width: 900px; margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }

/* ── NAV ── */
nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,13,20,.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}
nav .wrap {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.nav-badge {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: inherit;
}
.nav-badge .cert-icon {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
}
.nav-title { font-family: 'DM Mono', monospace; font-size: 13px; color: var(--muted); letter-spacing: .05em; }
.nav-links { display: flex; gap: 6px; flex-wrap: wrap; }
.nav-links a {
  font-size: 12px; font-family: 'DM Mono', monospace;
  color: var(--muted); text-decoration: none;
  padding: 4px 10px; border-radius: 4px;
  border: 1px solid transparent;
  transition: all .2s;
}
.nav-links a:hover { color: var(--accent2); border-color: var(--accent2); background: rgba(6,182,212,.05); }
.nav-links a.active { color: var(--accent2); border-color: rgba(6,182,212,.4); background: rgba(6,182,212,.08); }

/* ── PAGE HEADER ── */
.page-header {
  padding: 48px 0 32px;
  animation: fadeUp .6s ease both;
}
.page-header .hero-eyebrow {
  font-family: 'DM Mono', monospace;
  font-size: 11px; letter-spacing: .15em;
  color: var(--accent2);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.page-header h1 {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -.02em;
}
.page-header h1 em { font-style: italic; color: var(--accent2); }

/* ── HERO ── */
.hero {
  padding: 64px 0 48px;
  animation: fadeUp .6s ease both;
}
.hero-eyebrow {
  font-family: 'DM Mono', monospace;
  font-size: 11px; letter-spacing: .15em;
  color: var(--accent2);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.hero h1 {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.15;
  letter-spacing: -.02em;
  margin-bottom: 16px;
}
.hero h1 em { font-style: italic; color: var(--accent2); }
.hero-sub { font-size: 16px; color: var(--muted); max-width: 540px; margin-bottom: 28px; }
.hero-stats {
  display: flex; gap: 24px; flex-wrap: wrap;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 20px;
  min-width: 130px;
}
.stat-label { font-size: 11px; font-family: 'DM Mono', monospace; color: var(--muted); text-transform: uppercase; letter-spacing: .1em; margin-bottom: 4px; }
.stat-value { font-size: 22px; font-weight: 600; color: var(--text); }
.stat-value.pass { color: var(--gold); }
.stat-value.beta { color: var(--accent); }

/* ── DOMAIN BARS ── */
.domains-section { padding: 40px 0 0; animation: fadeUp .6s .15s ease both; }
.section-label {
  font-family: 'DM Mono', monospace;
  font-size: 11px; letter-spacing: .15em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 20px;
}
.domain-bar-wrap { display: flex; flex-direction: column; gap: 12px; }
.domain-bar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 20px;
  position: relative; overflow: hidden;
}
.domain-bar::after {
  content: '';
  position: absolute; left: 0; top: 0; bottom: 0;
  border-radius: 10px 0 0 10px;
  opacity: .12;
}
.domain-bar.d1::after { width: 42.5%; background: var(--accent); }
.domain-bar.d2::after { width: 57.5%; background: var(--accent2); }
.domain-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
.domain-name { font-weight: 600; font-size: 14px; }
.domain-pct {
  font-family: 'DM Mono', monospace; font-size: 13px;
}
.d1 .domain-pct { color: var(--accent); }
.d2 .domain-pct { color: var(--accent2); }
.domain-track {
  height: 4px; background: var(--border); border-radius: 4px; overflow: hidden;
}
.domain-fill { height: 100%; border-radius: 4px; transition: width 1.2s cubic-bezier(.4,0,.2,1); }
.d1 .domain-fill { width: 42.5%; background: linear-gradient(90deg, var(--accent), var(--accent2)); }
.d2 .domain-fill { width: 57.5%; background: linear-gradient(90deg, var(--accent2), #10b981); }

/* ── QUICK LINKS ── */
.quick-links { padding: 40px 0 60px; animation: fadeUp .6s .25s ease both; }
.quick-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 10px; }
.quick-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  text-decoration: none; color: inherit;
  display: flex; flex-direction: column; gap: 8px;
  transition: border-color .2s, transform .2s;
}
.quick-card:hover { border-color: var(--accent2); transform: translateY(-2px); }
.quick-icon { font-size: 22px; }
.quick-title { font-weight: 600; font-size: 14px; }
.quick-desc { font-size: 12.5px; color: var(--muted); }

/* ── ACCORDION OBJECTIVES ── */
.objectives-section { padding: 40px 0 60px; animation: fadeUp .6s .25s ease both; }
.obj-group { margin-bottom: 10px; }
.obj-domain-header {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 10px; padding-top: 8px;
}
.obj-domain-badge {
  font-family: 'DM Mono', monospace;
  font-size: 10px; letter-spacing: .1em; text-transform: uppercase;
  padding: 3px 8px; border-radius: 4px;
}
.d1-badge { background: var(--pill-a); color: var(--accent); border: 1px solid rgba(59,130,246,.25); }
.d2-badge { background: var(--pill-b); color: var(--accent2); border: 1px solid rgba(6,182,212,.25); }
.obj-domain-title { font-family: 'DM Serif Display', serif; font-size: 1.1rem; }

details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 8px;
  overflow: hidden;
  transition: border-color .2s;
}
details:hover { border-color: #2d3a52; }
details[open] { border-color: var(--accent); }
summary {
  cursor: pointer;
  list-style: none;
  padding: 14px 18px;
  display: flex; align-items: center; justify-content: space-between;
  user-select: none;
  font-weight: 600; font-size: 14px;
}
summary::-webkit-details-marker { display: none; }
.summary-chevron {
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; color: var(--muted);
  transition: transform .25s, background .2s;
  flex-shrink: 0;
}
details[open] .summary-chevron { transform: rotate(180deg); background: rgba(59,130,246,.2); color: var(--accent); }
.detail-body { padding: 0 18px 16px; }
.detail-body ul { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.detail-body li {
  display: flex; gap: 10px; align-items: flex-start;
  font-size: 13.5px; color: #a8b8d0; line-height: 1.5;
}
.detail-body li::before {
  content: '›';
  color: var(--accent2); font-weight: 700; flex-shrink: 0; margin-top: 1px;
}

/* ── PROGRESS TRACKER ── */
.tracker-section { padding: 40px 0 60px; animation: fadeUp .6s .25s ease both; }
.tracker-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 8px;
}
.tracker-item {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; padding: 12px 14px;
  display: flex; align-items: center; gap: 10px;
  cursor: pointer; transition: border-color .2s, background .2s;
  user-select: none;
}
.tracker-item:hover { border-color: #2d3a52; background: #13192a; }
.tracker-item.done { border-color: rgba(16,185,129,.3); background: rgba(16,185,129,.05); }
.check-box {
  width: 18px; height: 18px; border-radius: 4px;
  border: 2px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; flex-shrink: 0;
  transition: all .2s;
}
.tracker-item.done .check-box { border-color: #10b981; background: #10b981; color: white; }
.tracker-label { font-size: 12.5px; line-height: 1.4; }
.progress-summary {
  margin-top: 14px; text-align: right;
  font-family: 'DM Mono', monospace; font-size: 12px; color: var(--muted);
}
#prog-bar-wrap { height: 3px; background: var(--border); border-radius: 3px; margin-top: 6px; overflow: hidden; }
#prog-bar { height: 100%; background: linear-gradient(90deg, var(--accent), #10b981); border-radius: 3px; width: 0; transition: width .4s ease; }

/* ── FLASHCARD WIDGET ── */
.flashcard-section { padding: 40px 0 60px; animation: fadeUp .6s .25s ease both; }
.flashcard-wrap { perspective: 1000px; }
.flashcard {
  width: 100%; max-width: 560px; height: 180px;
  position: relative; cursor: pointer;
  transform-style: preserve-3d;
  transition: transform .5s cubic-bezier(.4,0,.2,1);
  margin-bottom: 14px;
}
.flashcard.flipped { transform: rotateY(180deg); }
.fc-face {
  position: absolute; inset: 0;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; padding: 24px;
  backface-visibility: hidden; -webkit-backface-visibility: hidden;
  display: flex; flex-direction: column; justify-content: center;
}
.fc-back { transform: rotateY(180deg); border-color: rgba(59,130,246,.3); }
.fc-label { font-family: 'DM Mono', monospace; font-size: 10px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.fc-text { font-size: 15px; line-height: 1.55; }
.fc-back .fc-text { font-size: 13.5px; color: #a8b8d0; }
.fc-controls { display: flex; gap: 10px; align-items: center; }
.fc-btn {
  padding: 8px 18px; border-radius: 6px; font-size: 13px; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  font-family: 'DM Sans', sans-serif; transition: all .2s;
}
.fc-btn:hover { background: #1a2235; border-color: #2d3a52; }
.fc-btn.primary { border-color: var(--accent); color: var(--accent); }
.fc-btn.primary:hover { background: rgba(59,130,246,.1); }
.fc-counter { font-family: 'DM Mono', monospace; font-size: 12px; color: var(--muted); margin-left: auto; }

/* ── RESOURCES ── */
.resources-section { padding: 40px 0 60px; animation: fadeUp .6s .25s ease both; }
.resource-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 10px; }
.resource-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 20px;
  text-decoration: none; color: inherit;
  display: flex; flex-direction: column; gap: 6px;
  transition: border-color .2s, transform .2s;
}
.resource-card:hover { border-color: var(--accent2); transform: translateY(-2px); }
.resource-icon { font-size: 20px; margin-bottom: 4px; }
.resource-title { font-weight: 600; font-size: 14px; }
.resource-desc { font-size: 12.5px; color: var(--muted); }

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── DIVIDER ── */
.divider { height: 1px; background: var(--border); margin: 40px 0 0; }

/* ── USER WIDGET ── */
.user-widget { display: flex; align-items: center; gap: 8px; font-family: 'DM Mono',monospace; font-size: 11px; color: var(--muted); }
.user-widget-label { display: none; }
.user-pill { background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 3px 10px; cursor: pointer; transition: border-color .2s; white-space: nowrap; }
.user-pill:hover { border-color: var(--accent2); color: var(--accent2); }

/* ── MODAL ── */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.65); z-index: 200; display: flex; align-items: center; justify-content: center; }
.modal-box { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 32px; max-width: 400px; width: 90%; animation: fadeUp .3s ease; }
.modal-title { font-family: 'DM Serif Display',serif; font-size: 1.4rem; margin-bottom: 8px; }
.modal-desc { font-size: 13px; color: var(--muted); margin-bottom: 20px; line-height: 1.6; }
.modal-input { width: 100%; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 10px 14px; font-size: 14px; color: var(--text); font-family: 'DM Mono',monospace; outline: none; }
.modal-input:focus { border-color: var(--accent); }
.modal-hint { font-size: 11px; color: #ef4444; margin-top: 6px; min-height: 16px; }
.modal-actions { display: flex; gap: 10px; margin-top: 16px; justify-content: flex-end; }

/* ── SCORE BADGES ON TRACKER ── */
.tracker-item { position: relative; padding-right: 52px; }
.score-badge {
  position: absolute; top: 50%; right: 10px; transform: translateY(-50%);
  font-family: 'DM Mono',monospace; font-size: 10px; font-weight: 600;
  padding: 2px 6px; border-radius: 4px; white-space: nowrap;
}
.score-badge.s-low   { background: rgba(239,68,68,.15);   color: #ef4444; border: 1px solid rgba(239,68,68,.3); }
.score-badge.s-mid   { background: rgba(245,158,11,.15);  color: var(--gold); border: 1px solid rgba(245,158,11,.3); }
.score-badge.s-high  { background: rgba(16,185,129,.15);  color: #10b981; border: 1px solid rgba(16,185,129,.3); }
.score-badge.s-ace   { background: rgba(59,130,246,.15);  color: var(--accent); border: 1px solid rgba(59,130,246,.3); }

/* ── QUIZ BUTTONS (shared) ── */
.quiz-btn {
  padding: 10px 20px; border-radius: 8px; font-size: 13px; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  font-family: 'DM Sans',sans-serif; transition: all .2s;
}
.quiz-btn:hover:not(:disabled) { background: #1a2235; border-color: #2d3a52; }
.quiz-btn:disabled { opacity: .4; cursor: not-allowed; }
.quiz-btn.primary { border-color: var(--accent); color: var(--accent); }
.quiz-btn.primary:hover:not(:disabled) { background: rgba(59,130,246,.1); }
.quiz-btn.success { border-color: #10b981; color: #10b981; }
.quiz-btn.success:hover:not(:disabled) { background: rgba(16,185,129,.1); }
.quiz-btn.danger  { border-color: #ef4444; color: #ef4444; }

/* ── RESP ── */
@media (max-width: 560px) {
  .hero-stats { gap: 12px; }
  .stat-card { min-width: 100px; padding: 12px 14px; }
  .nav-links { display: none; }
}