/* ---------- Navigation ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--nav-bg);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--border);
  height: var(--nav-h);
}
.nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--fg);
  font-weight: 700;
  letter-spacing: -0.01em;
  flex-shrink: 0;
  min-width: 0;
}
.brand:hover { color: var(--fg); }
.brand-mark {
  width: 28px; height: 28px;
  color: var(--accent);
  filter: drop-shadow(0 0 6px var(--accent-soft));
  flex-shrink: 0;
}
.brand-name { font-size: 1rem; white-space: nowrap; }
.brand-name b { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 4px;
  list-style: none;
  padding: 0;
}
.nav-links a {
  color: var(--fg-muted);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: .95rem;
  font-weight: 500;
  transition: color .15s, background .15s;
}
.nav-links a:hover { color: var(--fg); background: var(--bg-elev); }
.nav-links a[aria-current="page"] { color: var(--accent); }

.nav-right { display: flex; align-items: center; gap: 8px; }

.icon-btn {
  width: 38px; height: 38px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--fg-muted);
  border-radius: var(--radius-sm);
  transition: color .15s, background .15s;
}
.icon-btn:hover { color: var(--fg); background: var(--bg-elev); }
.icon-btn svg { width: 18px; height: 18px; }

.xp-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: .85rem;
  color: var(--fg-muted);
  background: var(--bg-elev);
}
.xp-chip b { color: var(--accent); font-weight: 600; }
.xp-chip .dot {
  width: 6px; height: 6px; border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.nav-toggle {
  display: none;
  width: 38px; height: 38px;
  align-items: center; justify-content: center;
  color: var(--fg);
  border-radius: var(--radius-sm);
}

@media (max-width: 1100px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav.open .nav-links {
    display: flex;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    flex-direction: column;
    background: var(--bg-elev);
    border-bottom: 1px solid var(--border);
    padding: 8px;
    gap: 2px;
  }
  .nav.open .nav-links a { padding: 12px 14px; }
}

@media (max-width: 420px) {
  .brand-name { display: none; }
  .xp-chip { padding: 6px 10px; font-size: .8rem; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: .95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .12s var(--ease), background .15s, color .15s, border-color .15s, box-shadow .15s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--accent);
  color: #04130b;
}
html[data-theme="light"] .btn-primary { color: #ffffff; }
.btn-primary:hover { box-shadow: 0 0 0 4px var(--accent-soft); color: #04130b; }
html[data-theme="light"] .btn-primary:hover { color: #ffffff; }

.btn-ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--border-strong);
}
.btn-ghost:hover { background: var(--bg-elev); color: var(--fg); }

.btn-outline {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}
.btn-outline:hover { background: var(--accent-soft); color: var(--accent); }

.btn-sm { padding: 8px 12px; font-size: .85rem; border-radius: var(--radius-sm); }
.btn-lg { padding: 14px 22px; font-size: 1rem; }

/* ---------- Cards ---------- */
.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: border-color .15s, transform .15s var(--ease), box-shadow .2s;
}
.card:hover { border-color: var(--border-strong); }
.card-link { display: block; color: var(--fg); }
.card-link:hover { color: var(--fg); transform: translateY(-2px); box-shadow: var(--shadow); }
.card h3 { margin-bottom: 8px; }
.card p { color: var(--fg-muted); }

.card-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 3px 8px;
  border: 1px solid var(--border);
  border-radius: 999px;
  margin-bottom: 12px;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: clamp(64px, 12vw, 120px) 0 clamp(48px, 8vw, 96px);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--hero-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--hero-grid) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 50% 0%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 30%, transparent 75%);
  pointer-events: none;
}
.hero-inner { position: relative; max-width: 880px; }
.hero h1 {
  background: linear-gradient(180deg, var(--fg) 0%, var(--fg-muted) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 18px;
}
.hero p.lead {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--fg-muted);
  max-width: 700px;
  margin-bottom: 28px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-meta {
  margin-top: 36px;
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  color: var(--fg-muted);
  font-size: .9rem;
}
.hero-meta b { color: var(--fg); font-weight: 600; }

/* ---------- Track cards ---------- */
.track-card { position: relative; }
.track-card .level {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent);
}
.track-card ul { padding-left: 18px; color: var(--fg-muted); }
.track-card ul li { margin: 4px 0; }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  margin-top: 64px;
  padding: 48px 0 32px;
  color: var(--fg-muted);
  font-size: .9rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 32px;
}
@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
.footer h4 { font-size: .85rem; color: var(--fg); margin-bottom: 12px; text-transform: uppercase; letter-spacing: .08em; }
.footer ul { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.footer a { color: var(--fg-muted); }
.footer a:hover { color: var(--accent); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  border-top: 1px solid var(--border);
  padding-top: 20px;
  font-size: .82rem;
}

/* ---------- Misc utilities ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .78rem; font-family: var(--font-mono);
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--border);
}
.divider { height: 1px; background: var(--border); margin: 32px 0; }

.feature {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.feature-icon {
  flex: 0 0 36px;
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--accent-soft);
  color: var(--accent);
}
.feature h4 { margin-bottom: 4px; }
.feature p { color: var(--fg-muted); font-size: .95rem; }

/* ---------- Module index ---------- */
.toolbar {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.chipset { display: flex; gap: 6px; flex-wrap: wrap; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: transparent;
  color: var(--fg-muted);
  font-size: .85rem;
  cursor: pointer;
  transition: color .15s, background .15s, border-color .15s;
}
.chip:hover { color: var(--fg); border-color: var(--border-strong); }
.chip[aria-pressed="true"] {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.module-card {
  display: flex;
  flex-direction: column;
  position: relative;
}
.module-card .top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; gap: 8px; }
.module-card .meta { color: var(--fg-dim); font-size: .82rem; font-family: var(--font-mono); }
.module-card h3 { margin-bottom: 8px; font-size: 1.2rem; }
.module-card .summary { color: var(--fg-muted); font-size: .95rem; flex: 1; }
.module-card .row-bottom {
  margin-top: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: .82rem;
  color: var(--fg-dim);
}
.module-card.is-done { border-color: var(--accent); }
.module-card.is-done .meta::before { content: "✓ "; color: var(--accent); }
.module-card .soon-tag {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--warn);
  border: 1px dashed var(--border-strong);
  padding: 2px 8px;
  border-radius: 999px;
}
.module-card.soon { opacity: .7; }
.module-card.soon:hover { transform: none; box-shadow: none; }

.progress-bar {
  height: 4px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 12px;
}
.progress-bar > span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 999px;
  transition: width .3s var(--ease);
}

/* ---------- Module page ---------- */
.module-page { padding-top: 40px; padding-bottom: 80px; }
.module-header { max-width: 760px; margin-bottom: 36px; }
.module-header h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 14px;
  letter-spacing: -0.03em;
}
.module-meta {
  display: flex; gap: 12px; flex-wrap: wrap;
  color: var(--fg-muted);
  font-size: .88rem;
  margin-bottom: 18px;
  font-family: var(--font-mono);
}
.module-meta .sep { color: var(--fg-dim); }

.module-objectives {
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 18px 22px;
  background: var(--bg-elev);
  margin-bottom: 32px;
}
.module-objectives h4 {
  font-family: var(--font-mono);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--accent);
  margin-bottom: 10px;
}
.module-objectives ul { padding-left: 20px; color: var(--fg-muted); margin: 0; }
.module-objectives li { margin: 4px 0; }

.module-body { max-width: 760px; }
.module-body > * + * { margin-top: 1.05em; }
.module-body h2 { margin-top: 2em; margin-bottom: .4em; font-size: 1.6rem; }
.module-body h3 { margin-top: 1.5em; margin-bottom: .3em; font-size: 1.2rem; }
.module-body ul, .module-body ol { padding-left: 24px; }
.module-body li { margin: 6px 0; }
.module-body blockquote {
  border-left: 3px solid var(--accent);
  padding: 4px 0 4px 16px;
  color: var(--fg-muted);
  margin: 1em 0;
}
.module-body .callout {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  background: var(--bg-elev);
  margin: 1.2em 0;
}
.module-body .callout.warn  { border-left: 3px solid var(--warn);   }
.module-body .callout.tip   { border-left: 3px solid var(--accent); }
.module-body .callout.danger{ border-left: 3px solid var(--danger); }
.module-body .callout h4 { margin-bottom: 6px; font-size: .95rem; }

.module-takeaways {
  margin-top: 48px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 24px;
  background: var(--accent-soft);
  max-width: 760px;
}
.module-takeaways h3 { color: var(--accent); margin-bottom: 10px; font-size: 1.05rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: .1em; }
.module-takeaways ul { padding-left: 20px; margin: 0; }

.module-actions { margin-top: 36px; display: flex; gap: 12px; flex-wrap: wrap; }

.module-nav {
  margin-top: 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  border-top: 1px solid var(--border);
  padding-top: 24px;
}
.module-nav a {
  display: flex; flex-direction: column;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--fg);
}
.module-nav a:hover { border-color: var(--accent); color: var(--fg); }
.module-nav .label { font-size: .72rem; text-transform: uppercase; letter-spacing: .1em; color: var(--fg-dim); margin-bottom: 4px; }
.module-nav .right { text-align: right; }
@media (max-width: 640px) { .module-nav { grid-template-columns: 1fr; } }

/* ---------- Quiz ---------- */
.quiz {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-elev);
}
@media (max-width: 640px) { .quiz { padding: 22px; } }

.quiz-head { margin-bottom: 28px; }
.quiz-progress {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.quiz-progress-bar {
  height: 4px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
}
.quiz-progress-bar > span {
  display: block; height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 999px;
  transition: width .3s var(--ease);
}
.quiz-progress-text { font-family: var(--font-mono); font-size: .8rem; }

.quiz-prompt {
  font-size: 1.35rem;
  margin-bottom: 18px;
  line-height: 1.35;
}

.quiz-options { display: flex; flex-direction: column; gap: 10px; margin-top: 16px; }
.quiz-option {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  cursor: pointer;
  transition: border-color .12s, background .12s;
  user-select: none;
}
.quiz-option:hover { border-color: var(--border-strong); }
.quiz-option.sel { border-color: var(--accent); background: var(--accent-soft); }
.quiz-option.ok  { border-color: var(--success); background: rgba(0,255,163,.10); }
.quiz-option.bad { border-color: var(--danger);  background: rgba(255,93,108,.10); }
.quiz-option.ans { border-color: var(--success); border-style: dashed; }

.ind { width: 18px; height: 18px; flex: 0 0 18px; border: 2px solid var(--border-strong); display: inline-block; }
.ind-radio { border-radius: 999px; }
.ind-check { border-radius: 4px; }
.quiz-option.sel .ind { border-color: var(--accent); background: var(--accent); }
.quiz-option.ok  .ind { border-color: var(--success); background: var(--success); }
.quiz-option.bad .ind { border-color: var(--danger);  background: var(--danger); }
.quiz-option.ans .ind { border-color: var(--success); }

.quiz-feedback {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  font-size: .95rem;
}
.quiz-feedback.ok  { border-left: 3px solid var(--success); }
.quiz-feedback.bad { border-left: 3px solid var(--danger);  }

.quiz-actions { margin-top: 22px; display: flex; gap: 12px; flex-wrap: wrap; }

.quiz-results { text-align: center; }
.quiz-score-ring { margin: 8px auto 16px; }
.quiz-score-ring .ring {
  width: 130px; height: 130px;
  margin: 0 auto;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 2.4rem; font-weight: 700;
  border: 6px solid var(--border);
  position: relative;
}
.quiz-score-ring .ring span { font-size: 1rem; margin-left: 2px; color: var(--fg-muted); font-weight: 500; }
.quiz-score-ring.pass .ring { border-color: var(--success); color: var(--success); }
.quiz-score-ring.fail .ring { border-color: var(--danger);  color: var(--danger);  }
.quiz-results .quiz-actions { justify-content: center; }

/* ---------- Progress dashboard ---------- */
.dash-hero {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 24px;
  margin-bottom: 32px;
}
@media (max-width: 880px) { .dash-hero { grid-template-columns: 1fr; } }
.dash-card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-elev);
}
.dash-level {
  display: flex; align-items: center; gap: 18px;
  margin-bottom: 18px;
}
.dash-lv-circle {
  width: 84px; height: 84px;
  border-radius: 50%;
  background: var(--accent-soft);
  border: 2px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: 1.8rem; font-weight: 700;
  color: var(--accent);
}
.dash-lv-title { font-size: 1.4rem; font-weight: 700; margin-bottom: 2px; }
.dash-lv-sub { color: var(--fg-muted); font-size: .92rem; }

.dash-xp-bar {
  height: 8px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
  margin: 6px 0 4px;
}
.dash-xp-bar > span {
  display: block; height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 999px;
  transition: width .4s var(--ease);
}
.dash-xp-text {
  display: flex; justify-content: space-between;
  font-family: var(--font-mono); font-size: .8rem; color: var(--fg-muted);
}

.dash-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.dash-stat {
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
}
.dash-stat .num { font-size: 1.8rem; font-weight: 700; color: var(--accent); line-height: 1; }
.dash-stat .lbl { color: var(--fg-muted); font-size: .82rem; margin-top: 4px; }

.badge-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 14px;
}
.badge-tile {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
  background: var(--bg);
  position: relative;
  transition: transform .15s var(--ease), border-color .15s;
}
.badge-tile.earned { border-color: var(--accent); background: var(--accent-soft); }
.badge-tile.locked { opacity: .5; }
.badge-tile .ic {
  width: 44px; height: 44px;
  margin: 0 auto 10px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-elev-2);
  color: var(--fg-muted);
}
.badge-tile.earned .ic { background: var(--accent); color: #04130b; }
html[data-theme="light"] .badge-tile.earned .ic { color: #fff; }
.badge-tile .nm { font-weight: 600; font-size: .95rem; margin-bottom: 4px; }
.badge-tile .ds { color: var(--fg-muted); font-size: .8rem; line-height: 1.4; }

.activity-log {
  display: flex; flex-direction: column;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  overflow: hidden;
}
.activity-row {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: .92rem;
}
.activity-row:last-child { border-bottom: 0; }
.activity-row .ic { color: var(--accent); width: 16px; }
.activity-row .grow { flex: 1; color: var(--fg-muted); }
.activity-row .xp { font-family: var(--font-mono); color: var(--accent); font-size: .85rem; }

.streak-ring {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg);
}
.streak-ring .flame { color: var(--warn); }
.streak-ring b { color: var(--fg); }

/* ---------- Glossary ---------- */
.glossary-toolbar {
  display: flex; gap: 12px; align-items: center; flex-wrap: wrap;
  margin-bottom: 24px;
}
.search {
  position: relative;
  flex: 1 1 320px;
  max-width: 480px;
}
.search input {
  width: 100%;
  padding: 12px 14px 12px 40px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--fg);
  font-size: .95rem;
  transition: border-color .15s;
}
.search input::placeholder { color: var(--fg-dim); }
.search input:focus { border-color: var(--accent); outline: none; }
.search svg {
  position: absolute; left: 12px; top: 50%;
  transform: translateY(-50%);
  width: 18px; height: 18px;
  color: var(--fg-muted);
  pointer-events: none;
}

.alpha-jump {
  display: flex; gap: 4px; flex-wrap: wrap;
}
.alpha-jump a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--fg-muted);
  border: 1px solid var(--border);
}
.alpha-jump a:hover { color: var(--accent); border-color: var(--accent); }
.alpha-jump a.empty { opacity: .35; pointer-events: none; }

.glossary-group { margin-top: 32px; scroll-margin-top: calc(var(--nav-h) + 16px); }
.glossary-group h3 {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  color: var(--accent);
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
  margin-bottom: 16px;
}
.gloss-entry {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}
.gloss-entry:last-child { border-bottom: 0; }
.gloss-term { font-weight: 600; font-size: 1.05rem; color: var(--fg); }
.gloss-def  { color: var(--fg-muted); margin-top: 4px; }
.gloss-see {
  margin-top: 6px;
  font-size: .82rem;
  color: var(--fg-dim);
  font-family: var(--font-mono);
}
.gloss-see a { color: var(--accent); }

.empty-state {
  padding: 32px;
  text-align: center;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  color: var(--fg-muted);
}

/* ---------- Game shell ---------- */
.game-shell {
  max-width: 880px;
  margin: 0 auto;
  display: grid;
  gap: 24px;
}
.game-hud {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elev);
  font-family: var(--font-mono);
  font-size: .88rem;
  color: var(--fg-muted);
}
.game-hud .stat { display: flex; align-items: center; gap: 8px; }
.game-hud .stat b { color: var(--fg); font-weight: 600; }
.game-hud .stat .accent { color: var(--accent); }

.game-stage {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-elev);
  padding: 28px;
}
@media (max-width: 640px) { .game-stage { padding: 20px; } }

.game-disclaimer {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  color: var(--fg-muted);
  font-size: .9rem;
  line-height: 1.55;
}
.game-disclaimer strong { color: var(--fg); }

.choice-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 18px; }
.choice-row .btn { flex: 1 1 160px; }

.feedback {
  margin-top: 18px;
  padding: 14px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
}
.feedback.ok  { border-left: 3px solid var(--success); }
.feedback.bad { border-left: 3px solid var(--danger);  }
.feedback h4 { margin-bottom: 6px; }
.feedback ul { padding-left: 22px; margin: 6px 0 0; }

/* Caesar */
.cipher-strip {
  font-family: var(--font-mono);
  background: var(--code-bg);
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 1.05rem;
  line-height: 1.6;
  word-break: break-word;
  white-space: pre-wrap;
}
.shift-control {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 18px;
}
.shift-control input[type=range] {
  flex: 1;
  accent-color: var(--accent);
}
.shift-control .val {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent);
  min-width: 40px;
  text-align: right;
}

/* Password meter */
.pw-input {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--fg);
}
.pw-input:focus { border-color: var(--accent); outline: none; }
.pw-meter {
  height: 8px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 14px;
}
.pw-meter > span {
  display: block; height: 100%;
  border-radius: 999px;
  transition: width .25s var(--ease), background .25s;
}
.pw-meter.low > span  { background: var(--danger); }
.pw-meter.mid > span  { background: var(--warn);   }
.pw-meter.high > span { background: var(--success); }

.pw-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: .85rem;
}
.pw-stats .cell {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
}
.pw-stats .cell .lbl { color: var(--fg-dim); font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; }
.pw-stats .cell .val { color: var(--fg); font-size: 1rem; margin-top: 2px; }

.target-line {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 6px;
}
.target-line .target { font-family: var(--font-mono); color: var(--accent); font-weight: 700; }

/* ---------- Packet inspector ---------- */
.pkt-scenario {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 14px 16px;
  margin-bottom: 14px;
}
.pkt-scenario .lbl { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.pkt-scenario .desc { color: var(--fg-muted); margin-top: 4px; font-size: .92rem; }

.pkt-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: .82rem;
}
.pkt-table th, .pkt-table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}
.pkt-table th {
  color: var(--fg-dim);
  font-weight: 500;
  text-transform: uppercase;
  font-size: .68rem;
  letter-spacing: .1em;
}
.pkt-row { cursor: pointer; transition: background .12s; }
.pkt-row:hover { background: var(--bg-elev-2); }
.pkt-row.sel { background: var(--accent-soft); }
.pkt-row.bad { background: rgba(255,93,108,.12); }
.pkt-row.good { background: rgba(0,255,163,.12); }
.pkt-table tr:last-child td { border-bottom: 0; }

/* ---------- Rule list (drag-reorder) ---------- */
.rule-list { display: flex; flex-direction: column; gap: 10px; }
.rule {
  display: grid;
  grid-template-columns: 28px auto 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  font-family: var(--font-mono);
  font-size: .85rem;
  user-select: none;
}
.rule.dragging { opacity: .5; }
.rule.drop-target { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.rule .grip {
  cursor: grab;
  color: var(--fg-dim);
  font-size: 1rem;
  text-align: center;
}
.rule .grip:active { cursor: grabbing; }
.rule .act {
  padding: 2px 8px;
  border-radius: 999px;
  font-size: .7rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-weight: 700;
}
.rule .act.accept { background: rgba(0,255,163,.15); color: var(--success); }
.rule .act.drop   { background: rgba(255,93,108,.15); color: var(--danger); }
.rule .body { color: var(--fg); }
.rule .num  { color: var(--fg-dim); font-size: .75rem; }

.rule-result {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 8px;
}
.rule-result .cell {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  font-family: var(--font-mono);
  font-size: .78rem;
}
.rule-result .cell.ok  { border-color: var(--success); }
.rule-result .cell.bad { border-color: var(--danger); }
.rule-result .cell .head { color: var(--fg-dim); font-size: .68rem; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 2px; }

/* ---------- SQL lab ---------- */
.sql-lab {
  display: grid;
  gap: 14px;
}
.sql-target {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 14px 16px;
}
.sql-target h4 { font-size: .95rem; margin-bottom: 4px; }
.sql-target p  { color: var(--fg-muted); font-size: .9rem; margin: 0; }

.sql-form {
  display: grid;
  gap: 10px;
  padding: 18px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--bg-elev-2);
}
.sql-form label { font-family: var(--font-mono); font-size: .78rem; color: var(--fg-muted); }
.sql-form input {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: .9rem;
}
.sql-form input:focus { border-color: var(--accent); outline: none; }

.sql-query {
  font-family: var(--font-mono);
  font-size: .8rem;
  background: var(--code-bg);
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.5;
}
.sql-query .kw { color: var(--accent-2); }
.sql-query .str { color: var(--success); }
.sql-query .inj { color: var(--danger); font-weight: 700; }

.sql-rows {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: .82rem;
}
.sql-rows .row {
  display: grid;
  grid-template-columns: 50px 1fr 1fr 1fr;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
}
.sql-rows .row:last-child { border-bottom: 0; }
.sql-rows .row.head { color: var(--fg-dim); font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; }
.sql-rows .row.admin { background: rgba(255,93,108,.10); color: var(--danger); }

/* ---------- TLS handshake (drag) ---------- */
.tls-board {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 720px) { .tls-board { grid-template-columns: 1fr; } }
.tls-pool, .tls-slots {
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  padding: 12px;
  background: var(--bg);
  min-height: 280px;
}
.tls-pool h4, .tls-slots h4 {
  font-family: var(--font-mono);
  font-size: .76rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--fg-muted);
  margin-bottom: 10px;
}
.tls-step {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elev);
  margin-bottom: 8px;
  cursor: grab;
  user-select: none;
  font-size: .9rem;
}
.tls-step:active { cursor: grabbing; }
.tls-step.dragging { opacity: .5; }
.tls-step.placed { background: var(--accent-soft); border-color: var(--accent); }
.tls-step.correct { border-color: var(--success); background: rgba(0,255,163,.10); }
.tls-step.wrong { border-color: var(--danger); background: rgba(255,93,108,.10); }
.tls-step .meta { font-family: var(--font-mono); font-size: .68rem; color: var(--fg-dim); letter-spacing: .1em; text-transform: uppercase; }
.tls-slot {
  min-height: 50px;
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  padding: 6px;
  background: transparent;
  transition: border-color .12s, background .12s;
}
.tls-slot.over { border-color: var(--accent); background: var(--accent-soft); }
.tls-slot .idx { font-family: var(--font-mono); font-size: .72rem; color: var(--fg-dim); margin-right: 6px; }

/* ---------- Hash match cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
@media (max-width: 640px) { .card-grid { grid-template-columns: repeat(3, 1fr); } }

.flip {
  position: relative;
  aspect-ratio: 1 / 1;
  perspective: 800px;
  cursor: pointer;
}
.flip-inner {
  position: absolute; inset: 0;
  transform-style: preserve-3d;
  transition: transform .3s var(--ease);
}
.flip.face .flip-inner { transform: rotateY(180deg); }
.flip.matched .flip-inner { transform: rotateY(180deg); }
.flip-face, .flip-back {
  position: absolute; inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  padding: 8px;
  font-family: var(--font-mono);
  text-align: center;
  word-break: break-word;
}
.flip-face {
  background: var(--bg-elev);
  color: var(--fg-muted);
  font-size: 1.2rem;
}
.flip-back {
  background: var(--bg);
  color: var(--fg);
  font-size: .8rem;
  line-height: 1.35;
  transform: rotateY(180deg);
}
.flip.kind-text .flip-back { font-weight: 600; }
.flip.kind-hash .flip-back { color: var(--accent); }
.flip.matched .flip-back {
  border-color: var(--success);
  background: rgba(0,255,163,.10);
}
.flip.miss .flip-back { border-color: var(--danger); }

/* ---------- Vigenere ---------- */
.vig-cipher {
  font-family: var(--font-mono);
  background: var(--code-bg);
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  white-space: pre-wrap;
  word-break: break-word;
  letter-spacing: .03em;
  font-size: .95rem;
}
.vig-key-input {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--fg);
  letter-spacing: .15em;
  text-transform: uppercase;
}
.vig-key-input:focus { border-color: var(--accent); outline: none; }
.vig-freq {
  display: grid;
  grid-template-columns: repeat(26, 1fr);
  gap: 2px;
  margin-top: 14px;
  height: 80px;
  align-items: end;
}
.vig-freq .bar {
  background: var(--accent);
  border-radius: 2px 2px 0 0;
  position: relative;
  min-height: 2px;
  opacity: .7;
  transition: height .2s var(--ease);
}
.vig-freq .bar .lab {
  position: absolute;
  bottom: -16px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: .58rem;
  color: var(--fg-dim);
}
.vig-freq-row {
  display: flex; gap: 16px; align-items: baseline;
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--fg-muted);
  margin-top: 24px;
}
.vig-freq-row b { color: var(--accent); }

/* ---------- Cookie inspector ---------- */
.cookie-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 16px 18px;
  font-family: var(--font-mono);
  font-size: .9rem;
}
.cookie-card .head {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 10px;
}
.cookie-card .name { font-weight: 700; color: var(--fg); font-size: 1.05rem; }
.cookie-card .ctx { color: var(--fg-dim); font-size: .78rem; }
.cookie-card .attrs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 6px;
  margin-top: 8px;
  font-size: .8rem;
}
.cookie-card .attr {
  padding: 4px 8px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  justify-content: space-between;
  gap: 8px;
}
.cookie-card .attr .k { color: var(--fg-dim); }
.cookie-card .attr .v { color: var(--fg); }
.cookie-card .attr .v.miss { color: var(--danger); }

.issue-list { display: flex; flex-direction: column; gap: 8px; margin-top: 16px; }
.issue {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  cursor: pointer;
  user-select: none;
}
.issue input { margin-top: 3px; accent-color: var(--accent); }
.issue.correct { border-color: var(--success); }
.issue.wrong   { border-color: var(--danger); }
.issue.missed  { border-color: var(--warn); background: rgba(255,209,102,.08); }
.issue .label  { font-size: .9rem; }
.issue .why { color: var(--fg-muted); font-size: .82rem; margin-top: 4px; }

/* ---------- CSP builder ---------- */
.csp-input {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: .92rem;
  color: var(--fg);
}
.csp-input:focus { border-color: var(--accent); outline: none; }
.csp-policy {
  font-family: var(--font-mono);
  font-size: .82rem;
  background: var(--code-bg);
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  word-break: break-word;
  margin-top: 8px;
}

.load-list {
  display: flex; flex-direction: column;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  font-family: var(--font-mono);
  font-size: .85rem;
  overflow: hidden;
}
.load-row {
  display: grid;
  grid-template-columns: 80px 1fr 90px;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  align-items: center;
}
.load-row:last-child { border-bottom: 0; }
.load-row .kind { color: var(--fg-dim); font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; }
.load-row .src { color: var(--fg); word-break: break-all; }
.load-row .verdict { font-weight: 600; text-align: right; }
.load-row.expected.ok    .verdict { color: var(--success); }
.load-row.expected.bad   .verdict { color: var(--danger); }
.load-row.unexpected.ok  .verdict { color: var(--warn); }
.load-row.unexpected.bad .verdict { color: var(--warn); }
.load-row .why { grid-column: 1 / -1; color: var(--fg-muted); font-size: .78rem; }

/* ---------- JWT lab ---------- */
.jwt-token {
  font-family: var(--font-mono);
  font-size: .8rem;
  background: var(--code-bg);
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  word-break: break-all;
  line-height: 1.5;
}
.jwt-token .h { color: var(--danger); }
.jwt-token .p { color: var(--accent-2); }
.jwt-token .s { color: var(--accent); }

.jwt-fields { display: grid; gap: 12px; margin-top: 12px; }
.jwt-field label {
  display: block;
  font-family: var(--font-mono);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--fg-muted);
  margin-bottom: 4px;
}
.jwt-field textarea {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--fg);
  resize: vertical;
  min-height: 80px;
}
.jwt-field textarea:focus { border-color: var(--accent); outline: none; }
.jwt-field input {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--fg);
}
.jwt-field input:focus { border-color: var(--accent); outline: none; }

.jwt-server {
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--bg-elev-2);
  padding: 14px 18px;
}
.jwt-server h4 { font-size: .9rem; margin-bottom: 6px; }
.jwt-server .out {
  font-family: var(--font-mono);
  font-size: .8rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  white-space: pre-wrap;
  word-break: break-all;
  margin-top: 8px;
}

/* ---------- Email forensics ---------- */
.email-headers {
  font-family: var(--font-mono);
  font-size: .8rem;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}
.email-headers .key { color: var(--fg-dim); }
.email-headers .val { color: var(--fg); }
.email-headers .pass { color: var(--success); }
.email-headers .fail { color: var(--danger); }
.email-headers .warn { color: var(--warn); }

/* ---------- IDOR API explorer ---------- */
.api-bar {
  display: grid;
  grid-template-columns: 100px 1fr 110px;
  gap: 8px;
  margin-bottom: 10px;
}
.api-bar select, .api-bar input, .api-bar button {
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--fg);
}
.api-bar button {
  background: var(--accent);
  color: #04130b;
  border-color: var(--accent);
  cursor: pointer;
  font-weight: 600;
}
html[data-theme="light"] .api-bar button { color: #fff; }

.api-response {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: .82rem;
  margin-top: 10px;
}
.api-response .status { font-weight: 600; margin-bottom: 6px; }
.api-response .status.s2xx { color: var(--success); }
.api-response .status.s4xx { color: var(--danger); }
.api-response .body { white-space: pre-wrap; color: var(--fg-muted); }

.endpoint-list {
  display: flex; flex-direction: column; gap: 6px;
  font-family: var(--font-mono);
  font-size: .82rem;
}
.endpoint-row {
  display: grid;
  grid-template-columns: 60px 1fr auto;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  align-items: center;
  background: var(--bg);
}
.endpoint-row .verb { font-weight: 700; color: var(--accent-2); }
.endpoint-row .pick {
  display: flex; gap: 4px;
}
.endpoint-row .pick button {
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elev);
  cursor: pointer;
  font-size: .78rem;
  color: var(--fg-muted);
}
.endpoint-row .pick button.on { background: var(--accent); color: #04130b; border-color: var(--accent); }
html[data-theme="light"] .endpoint-row .pick button.on { color: #fff; }
.endpoint-row.correct { border-color: var(--success); }
.endpoint-row.wrong   { border-color: var(--danger); }

/* ---------- Buffer overflow stack ---------- */
.stack-vis {
  display: flex;
  flex-direction: column-reverse;
  gap: 2px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 8px;
  font-family: var(--font-mono);
  font-size: .78rem;
}
.stack-cell {
  display: grid;
  grid-template-columns: 70px 80px 1fr;
  gap: 8px;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  background: var(--bg-elev);
  align-items: center;
}
.stack-cell .addr  { color: var(--fg-dim); }
.stack-cell .bytes { color: var(--fg); letter-spacing: .06em; }
.stack-cell .lbl   { color: var(--fg-muted); text-align: right; font-size: .72rem; }
.stack-cell.buf   { background: rgba(56,189,248,.08); }
.stack-cell.canary{ background: rgba(255,209,102,.12); }
.stack-cell.sfp   { background: rgba(151,163,184,.10); }
.stack-cell.ret   { background: rgba(255,93,108,.10); border: 1px solid var(--danger); }
.stack-cell.overwritten { outline: 2px solid var(--accent); }

.bof-builder {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 14px;
}
@media (max-width: 640px) { .bof-builder { grid-template-columns: 1fr; } }
.bof-field {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  background: var(--bg);
}
.bof-field label {
  display: block;
  font-family: var(--font-mono);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--fg-muted);
  margin-bottom: 6px;
}
.bof-field input, .bof-field select {
  width: 100%;
  padding: 8px 10px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: .9rem;
}
.bof-field input:focus, .bof-field select:focus { border-color: var(--accent); outline: none; }
.bof-payload {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: .78rem;
  background: var(--code-bg);
  padding: 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  word-break: break-all;
  color: var(--accent);
}

/* ---------- OAuth audit ---------- */
.oauth-config {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 16px;
  font-family: var(--font-mono);
  font-size: .85rem;
}
.oauth-config dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 6px 14px;
}
.oauth-config dt { color: var(--fg-dim); font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; }
.oauth-config dd { color: var(--fg); word-break: break-all; }

/* ---------- Packet bytes (Wireshark-lite) ---------- */
.pkt-bytes {
  font-family: var(--font-mono);
  font-size: .78rem;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  overflow-x: auto;
}
.pkt-bytes table { border-collapse: collapse; width: 100%; }
.pkt-bytes td { padding: 2px 4px; }
.pkt-bytes .off { color: var(--fg-dim); padding-right: 12px; }
.pkt-bytes .hex { color: var(--fg); letter-spacing: .04em; }
.pkt-bytes .asc { color: var(--accent-2); padding-left: 12px; }
.pkt-bytes .byte {
  display: inline-block;
  padding: 0 3px;
  border-radius: 3px;
  cursor: pointer;
  transition: background .12s;
}
.pkt-bytes .byte:hover { background: var(--accent-soft); }
.pkt-bytes .byte.sel { background: var(--accent); color: #04130b; }
html[data-theme="light"] .pkt-bytes .byte.sel { color: #fff; }
.pkt-bytes .byte.hit-ok  { background: rgba(0,255,163,.25); color: var(--fg); }
.pkt-bytes .byte.hit-bad { background: rgba(255,93,108,.25); color: var(--fg); }

.pkt-question {
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 12px;
  background: var(--bg-elev);
}
.pkt-question .lbl { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); margin-bottom: 4px; }

/* ---------- Race condition lab ---------- */
.race-account {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  font-family: var(--font-mono);
}
.race-account .bal { font-size: 1.4rem; font-weight: 700; color: var(--accent); }
.race-account .lbl { color: var(--fg-muted); font-size: .85rem; }

.race-big-btn {
  display: block;
  width: 100%;
  padding: 20px;
  margin-top: 14px;
  font-size: 1.1rem;
  font-weight: 700;
  background: var(--accent);
  color: #04130b;
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform .08s;
}
html[data-theme="light"] .race-big-btn { color: #fff; }
.race-big-btn:active { transform: scale(.98); }
.race-big-btn:disabled { opacity: .5; cursor: not-allowed; }

.race-log {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: .8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  max-height: 220px;
  overflow-y: auto;
}
.race-log .ev {
  display: grid;
  grid-template-columns: 60px 70px 1fr 90px;
  gap: 8px;
  padding: 6px 12px;
  border-bottom: 1px solid var(--border);
}
.race-log .ev:last-child { border-bottom: 0; }
.race-log .t { color: var(--fg-dim); }
.race-log .id { color: var(--accent-2); }
.race-log .ev.ok  { color: var(--success); }
.race-log .ev.bad { color: var(--danger); }
.race-log .ev.info { color: var(--fg-muted); }

/* ---------- WebAuthn vs OTP ---------- */
.fake-bar {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 14px;
  background: var(--bg-elev-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: .82rem;
}
.fake-bar .lock { color: var(--success); }
.fake-bar .lock.bad { color: var(--warn); }
.fake-bar .url { flex: 1; color: var(--fg); word-break: break-all; }

.fake-page {
  margin-top: 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 22px;
  text-align: center;
}
.fake-page h3 { margin-bottom: 6px; font-size: 1.1rem; }
.fake-page p  { color: var(--fg-muted); font-size: .9rem; margin-bottom: 14px; }
.fake-page input {
  width: 100%;
  padding: 10px 12px;
  margin-bottom: 8px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  color: var(--fg);
}

/* ---------- ARP lab ---------- */
.arp-table {
  font-family: var(--font-mono);
  font-size: .85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.arp-table .row {
  display: grid;
  grid-template-columns: 1fr 1.5fr 80px;
  gap: 12px;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.arp-table .row.head { background: var(--bg-elev); color: var(--fg-dim); font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; }
.arp-table .row:last-child { border-bottom: 0; }
.arp-table .row.poisoned { background: rgba(255,93,108,.12); }
.arp-table .row.poisoned .v { color: var(--danger); }
.arp-table .row.fresh { background: rgba(0,255,163,.08); }
.arp-table .since { color: var(--fg-dim); text-align: right; }

.arp-events {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: .82rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  max-height: 200px;
  overflow-y: auto;
}
.arp-events .ev {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 10px;
  padding: 6px 12px;
  border-bottom: 1px solid var(--border);
}
.arp-events .ev:last-child { border-bottom: 0; }
.arp-events .ev.attack { color: var(--danger); }
.arp-events .ev.normal { color: var(--fg-muted); }

/* ---------- Rainbow table cracker ---------- */
.rainbow-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 720px) { .rainbow-grid { grid-template-columns: 1fr; } }
.rainbow-panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  overflow: hidden;
}
.rainbow-panel h4 {
  padding: 10px 14px;
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--fg-muted);
  margin: 0;
}
.rainbow-panel .row {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 10px;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: .82rem;
  align-items: center;
}
.rainbow-panel .row:last-child { border-bottom: 0; }
.rainbow-panel .row.sel { background: var(--accent-soft); }
.rainbow-panel .row.cracked { background: rgba(0,255,163,.10); }
.rainbow-panel .row.uncrackable { background: rgba(255,209,102,.08); }
.rainbow-panel .row .name { color: var(--accent-2); cursor: pointer; }
.rainbow-panel .row .hash { color: var(--fg-dim); font-size: .72rem; word-break: break-all; }
.rainbow-panel .row .pt   { color: var(--accent); cursor: pointer; }
.rainbow-panel .row .pt:hover { text-decoration: underline; }
.rainbow-panel .row .verdict { color: var(--success); font-weight: 600; font-size: .75rem; }
.rainbow-panel .row .verdict.bad { color: var(--danger); }

.rainbow-actions {
  display: flex; gap: 8px; flex-wrap: wrap;
  margin-top: 12px;
}

/* ---------- CTF chain ---------- */
.ctf-stage {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 16px 18px;
  margin-bottom: 14px;
}
.ctf-stage.locked    { opacity: .45; pointer-events: none; }
.ctf-stage.solved    { border-color: var(--success); }
.ctf-stage h4 {
  display: flex; align-items: center; gap: 10px;
  font-size: .95rem;
  margin-bottom: 8px;
}
.ctf-stage .num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--bg-elev-2);
  color: var(--fg-muted);
  font-family: var(--font-mono);
  font-size: .75rem;
}
.ctf-stage.solved .num { background: var(--success); color: #04130b; }
html[data-theme="light"] .ctf-stage.solved .num { color: #fff; }
.ctf-stage .input-box, .ctf-stage .output-box {
  font-family: var(--font-mono);
  font-size: .82rem;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  word-break: break-all;
  white-space: pre-wrap;
  margin-bottom: 8px;
}
.ctf-stage .output-box { color: var(--accent); border-color: var(--success); }
.ctf-stage input[type=text], .ctf-stage select {
  width: 100%;
  padding: 8px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--fg);
  margin-bottom: 8px;
}
.ctf-stage input[type=text]:focus, .ctf-stage select:focus { border-color: var(--accent); outline: none; }

/* ---------- TLS cipher negotiation ---------- */
.cipher-list {
  font-family: var(--font-mono);
  font-size: .85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  overflow: hidden;
}
.cipher-list .row {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 10px;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  align-items: center;
}
.cipher-list .row:last-child { border-bottom: 0; }
.cipher-list .row .num { color: var(--fg-dim); font-size: .72rem; }
.cipher-list .row .name { color: var(--fg); }
.cipher-list .row.match { background: var(--accent-soft); }
.cipher-list .row.match .name { color: var(--accent); font-weight: 600; }

.cipher-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 720px) { .cipher-pair { grid-template-columns: 1fr; } }

/* ---------- Same-Origin sandbox ---------- */
.sop-frame {
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--bg-elev-2);
  padding: 14px;
  margin-bottom: 10px;
}
.sop-frame .head {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: .78rem;
  margin-bottom: 10px;
}
.sop-frame .head .lock { color: var(--success); }
.sop-frame pre {
  font-family: var(--font-mono);
  font-size: .8rem;
  margin: 0;
}
.sop-result {
  margin-top: 10px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: .82rem;
  border: 1px solid var(--border);
}
.sop-result.ok  { border-color: var(--success); color: var(--success); }
.sop-result.bad { border-color: var(--danger); color: var(--danger); }

/* ---------- DoH inspector ---------- */
.doh-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 720px) { .doh-pair { grid-template-columns: 1fr; } }
.doh-panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 14px;
}
.doh-panel h4 { font-family: var(--font-mono); font-size: .8rem; text-transform: uppercase; letter-spacing: .1em; color: var(--accent); margin-bottom: 8px; }
.doh-panel pre {
  font-family: var(--font-mono);
  font-size: .78rem;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px;
  margin: 0;
  white-space: pre-wrap;
  word-break: break-all;
}
.doh-vis {
  margin-top: 8px;
  display: flex; flex-direction: column; gap: 4px;
  font-family: var(--font-mono);
  font-size: .75rem;
}
.doh-vis .leak {
  display: flex; justify-content: space-between;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}
.doh-vis .leak.yes { background: rgba(255,93,108,.12); color: var(--danger); }
.doh-vis .leak.no  { background: rgba(0,255,163,.10); color: var(--success); }

/* ---------- Daily Challenge ---------- */
.daily-hero {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-elev);
  padding: 24px;
  margin-bottom: 24px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
}
@media (max-width: 640px) { .daily-hero { grid-template-columns: 1fr; text-align: center; } }
.daily-date {
  font-family: var(--font-mono);
  text-align: center;
}
.daily-date .day  { font-size: 2rem; font-weight: 700; color: var(--accent); line-height: 1; }
.daily-date .mon  { font-size: .8rem; color: var(--fg-muted); margin-top: 4px; text-transform: uppercase; letter-spacing: .1em; }
.daily-streak {
  font-family: var(--font-mono);
  text-align: right;
  font-size: .85rem;
  color: var(--fg-muted);
}
.daily-streak b { color: var(--accent); font-size: 1.4rem; }

/* ---------- JWT cracker race ---------- */
.crack-vis {
  font-family: var(--font-mono);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-top: 12px;
}
.crack-vis .live {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 6px 16px;
  font-size: .85rem;
}
.crack-vis .live .k { color: var(--fg-dim); }
.crack-vis .live .v { color: var(--fg); }
.crack-vis .live .v.hot { color: var(--accent); }
.crack-vis .live .v.hit { color: var(--success); font-weight: 700; }
.crack-vis .progress {
  height: 6px; margin-top: 12px;
  background: var(--border); border-radius: 999px; overflow: hidden;
}
.crack-vis .progress > span {
  display: block; height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}
.crack-vis .word-spew {
  margin-top: 10px;
  max-height: 80px;
  overflow: hidden;
  font-size: .78rem;
  color: var(--fg-dim);
  word-break: break-all;
}

/* ---------- Request smuggling ---------- */
.smug-req {
  font-family: var(--font-mono);
  font-size: .78rem;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  white-space: pre-wrap;
  word-break: break-all;
}
.smug-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 640px) { .smug-pair { grid-template-columns: 1fr; } }
.smug-box {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 12px;
}
.smug-box h4 {
  font-family: var(--font-mono);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--fg-muted);
  margin-bottom: 6px;
}
.smug-box .what {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--accent);
  word-break: break-all;
}

/* ---------- Crypto mode detective ---------- */
.mode-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 14px;
}
@media (max-width: 720px) { .mode-row { grid-template-columns: 1fr; } }
.mode-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 12px;
  text-align: center;
}
.mode-grid {
  display: grid;
  width: 100%;
  aspect-ratio: 1 / 1;
  grid-template-columns: repeat(16, 1fr);
  gap: 0;
  margin: 0 auto 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.mode-grid .px {
  background: var(--bg-elev-2);
  aspect-ratio: 1/1;
}
.mode-card select {
  width: 100%;
  padding: 8px 10px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--fg);
}
.mode-card.correct  { border-color: var(--success); }
.mode-card.wrong    { border-color: var(--danger); }

/* ---------- Dashboard ---------- */
.dash-tracks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 28px;
}
@media (max-width: 720px) { .dash-tracks { grid-template-columns: 1fr; } }
.track-card-dash {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-elev);
  padding: 18px 20px;
  text-align: center;
}
.track-card-dash .name {
  font-family: var(--font-mono);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--fg-muted);
  margin-bottom: 12px;
}
.track-card-dash .pct {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent);
  font-family: var(--font-mono);
  line-height: 1;
}
.track-card-dash .pct small { font-size: 1rem; color: var(--fg-muted); margin-left: 4px; }
.track-card-dash .count {
  color: var(--fg-muted);
  margin-top: 6px;
  font-size: .9rem;
}
.track-card-dash .bar {
  height: 6px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 14px;
}
.track-card-dash .bar > span {
  display: block; height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width .4s var(--ease);
}

.chapter-rows {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.chapter-row {
  display: grid;
  grid-template-columns: max-content 1fr max-content;
  gap: 14px;
  align-items: center;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
}
.chapter-row .ch-name { font-weight: 600; }
.chapter-row .ch-name .num { color: var(--fg-dim); font-family: var(--font-mono); font-size: .78rem; margin-right: 8px; }
.chapter-row .ch-bar {
  height: 6px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
}
.chapter-row .ch-bar > span {
  display: block; height: 100%;
  background: var(--accent);
  transition: width .3s var(--ease);
}
.chapter-row .ch-bar > span.done {
  background: linear-gradient(90deg, var(--accent), var(--success));
}
.chapter-row .ch-count {
  font-family: var(--font-mono);
  color: var(--fg-muted);
  font-size: .85rem;
}

.next-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 16px;
  align-items: center;
  padding: 18px 20px;
  border: 1px solid var(--accent);
  border-radius: var(--radius-lg);
  background: var(--accent-soft);
  margin-bottom: 24px;
}
@media (max-width: 640px) { .next-card { grid-template-columns: 1fr; text-align: center; } }
.next-card .kind {
  font-family: var(--font-mono);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--accent);
  margin-bottom: 4px;
}
.next-card h3 { margin-bottom: 4px; font-size: 1.1rem; }
.next-card .desc { color: var(--fg-muted); font-size: .92rem; }
.next-card svg { width: 36px; height: 36px; color: var(--accent); }

.quick-tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 20px;
}
.quick-tiles a {
  display: block;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--fg);
  text-align: center;
  transition: border-color .15s, transform .12s var(--ease);
}
.quick-tiles a:hover { border-color: var(--accent); transform: translateY(-2px); color: var(--fg); }
.quick-tiles a .lbl { display: block; font-family: var(--font-mono); font-size: .72rem; color: var(--fg-muted); letter-spacing: .08em; text-transform: uppercase; margin-bottom: 4px; }
.quick-tiles a .v { font-size: .92rem; font-weight: 600; }

/* ---------- SSRF lab ---------- */
.ssrf-form {
  display: grid;
  grid-template-columns: 90px 1fr auto;
  gap: 8px;
  margin-bottom: 12px;
}
.ssrf-form select, .ssrf-form input, .ssrf-form button {
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--fg);
}
.ssrf-form button {
  background: var(--accent); color: #04130b; border-color: var(--accent); cursor: pointer; font-weight: 600;
}
html[data-theme="light"] .ssrf-form button { color: #fff; }

/* ---------- Padding oracle ---------- */
.po-bytes {
  display: grid;
  grid-template-columns: repeat(16, 1fr);
  gap: 2px;
  margin: 14px 0;
  font-family: var(--font-mono);
  font-size: .7rem;
}
.po-bytes .cell {
  text-align: center;
  padding: 6px 0;
  background: var(--bg-elev);
  border-radius: 3px;
  color: var(--fg-muted);
}
.po-bytes .cell.target { background: var(--accent-soft); color: var(--accent); }
.po-bytes .cell.solved { background: rgba(0,255,163,.20); color: var(--success); font-weight: 700; }
.po-bytes .cell.trying { background: rgba(255,209,102,.20); color: var(--warn); }

/* ---------- DNS rebinding ---------- */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: .85rem;
}
.timeline .step {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 14px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
}
.timeline .step.active { border-color: var(--accent); }
.timeline .step .t { color: var(--fg-dim); font-size: .8rem; }