/* AIdemy Arcade — zero-build vanilla styling.
 * Design language: deep-space dark, glass surfaces (blur + 1px inner highlight),
 * violet→cyan gradient accents, per-zone hues, fluid type, mobile-first with a
 * bottom tab bar under 640px. Every class from the pre-makeover sheet is preserved. */
/* THEMES — default :root is Cyber Neon; [data-theme] blocks override the same tokens.
 * Switcher lives in Profile; choice persists in progress.theme (applied on boot). */
:root {
  /* Cyber Neon — deep black, electric mint + hot magenta, controlled micro-glow */
  --bg: #0d0d14;
  --bg-2: #131320;
  --panel: rgba(21, 21, 31, 0.78);
  --panel-solid: #15151f;
  --panel-2: #232338;
  --chrome: rgba(13, 13, 20, 0.85);
  --ink: #f2f3f8;
  --ink-dim: #8f93b3;
  --accent: #2ee6a8;
  --accent-2: #4dc3ff;
  --hot: #ff4d9d;
  --on-accent: #06251a;
  --good: #2ee6a8;
  --bad: #ff5c7a;
  --warn: #ffb454;
  --gold: #ffd23f;
  --lock: #3a3a52;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 10px 34px rgba(0, 0, 0, 0.55);
  --edge: inset 0 1px 0 rgba(255, 255, 255, 0.06);
  --line: 1px solid rgba(255, 255, 255, 0.08);
  --grad: linear-gradient(120deg, var(--accent), var(--accent-2));
  --glow: 0 0 16px rgba(46, 230, 168, 0.22);
  --glow-hot: 0 0 16px rgba(255, 77, 157, 0.28);
  --bg-glow-1: rgba(46, 230, 168, 0.10);
  --bg-glow-2: rgba(255, 77, 157, 0.07);
  --z-foundations: #f8c537;
  --z-llm: #b18cff;
  --z-rag: #ff4d9d;
  --z-agents: #2ee6a8;
  --z-production: #4dc3ff;
  --z-frontier: #8f93b3;
}

[data-theme="nebula"] {
  /* Nebula — the violet→cyan deep-navy system from the makeover */
  --bg: #0a0c1e;
  --bg-2: #12152e;
  --panel: rgba(30, 33, 69, 0.72);
  --panel-solid: #1e2145;
  --panel-2: #262a55;
  --chrome: rgba(10, 12, 30, 0.85);
  --ink: #eceeff;
  --ink-dim: #9da1cf;
  --accent: #7c6cf0;
  --accent-2: #22d3ee;
  --hot: #fb7185;
  --on-accent: #ffffff;
  --good: #34d399;
  --bad: #fb7185;
  --warn: #fbbf24;
  --gold: #fcd34d;
  --lock: #454a7a;
  --shadow: 0 10px 34px rgba(3, 5, 18, 0.5);
  --glow: var(--edge);
  --glow-hot: var(--edge);
  --bg-glow-1: rgba(124, 108, 240, 0.16);
  --bg-glow-2: rgba(34, 211, 238, 0.08);
  --z-foundations: #f59e0b;
  --z-llm: #a78bfa;
  --z-rag: #fb7185;
  --z-agents: #34d399;
  --z-production: #38bdf8;
  --z-frontier: #9da1cf;
}

[data-theme="daylight"] {
  /* Daylight — light, reading-first; violet accent, muted semantic hues */
  --bg: #faf9f5;
  --bg-2: #f2f0e9;
  --panel: rgba(255, 255, 255, 0.85);
  --panel-solid: #ffffff;
  --panel-2: #eeece4;
  --chrome: rgba(250, 249, 245, 0.88);
  --ink: #1f2430;
  --ink-dim: #6f7484;
  --accent: #6c5ce7;
  --accent-2: #0ea5e9;
  --hot: #d6336c;
  --on-accent: #ffffff;
  --good: #16a34a;
  --bad: #dc2626;
  --warn: #d97706;
  --gold: #b45309;
  --lock: #c8c5ba;
  --shadow: 0 8px 26px rgba(31, 36, 48, 0.10);
  --edge: inset 0 1px 0 rgba(255, 255, 255, 0.7);
  --line: 1px solid rgba(31, 36, 48, 0.10);
  --glow: none;
  --glow-hot: none;
  --bg-glow-1: rgba(108, 92, 231, 0.08);
  --bg-glow-2: rgba(14, 165, 233, 0.05);
  --z-foundations: #d97706;
  --z-llm: #7c3aed;
  --z-rag: #db2777;
  --z-agents: #059669;
  --z-production: #0284c7;
  --z-frontier: #6f7484;
}

* { box-sizing: border-box; }
:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 2px; }

body {
  margin: 0;
  font-family: "Inter", "SF Pro Text", "Segoe UI Variable", system-ui, -apple-system, sans-serif;
  background:
    radial-gradient(900px 500px at 15% -8%, var(--bg-glow-1), transparent 60%),
    radial-gradient(800px 500px at 95% 0%, var(--bg-glow-2), transparent 55%),
    var(--bg) fixed;
  color: var(--ink);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ---- top bar ---- */
.topbar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 12px 22px;
  background: var(--chrome);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand {
  font-size: 19px; font-weight: 800; color: var(--ink); text-decoration: none;
  letter-spacing: -0.01em;
}
.topnav { margin-left: auto; display: flex; gap: 6px; }
.topnav a {
  color: var(--ink-dim); text-decoration: none; padding: 8px 14px;
  border-radius: 10px; font-weight: 600; transition: background 0.12s, color 0.12s;
}
.topnav a:hover { background: var(--panel-2); color: var(--ink); }

.stats-strip { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--panel-2); padding: 6px 12px; border-radius: 999px;
  font-weight: 700; font-size: 13px; box-shadow: var(--edge);
}
.pill .lbl { color: var(--ink-dim); font-weight: 600; }
.xpbar { width: 150px; height: 8px; background: var(--panel-2); border-radius: 999px; overflow: hidden; }
.xpbar > i { display: block; height: 100%; background: var(--grad); transition: width 0.4s ease; }

/* ---- layout + type ---- */
#app { max-width: 1080px; margin: 0 auto; padding: 26px 22px 90px; }
h1 { margin: 0 0 4px; font-size: clamp(22px, 4.5vw, 30px); letter-spacing: -0.02em; }
.sub { color: var(--ink-dim); margin: 0 0 22px; line-height: 1.5; }
.back { color: var(--ink-dim); text-decoration: none; font-weight: 600; display: inline-block; margin-bottom: 14px; }
.back:hover { color: var(--ink); }

/* subtle entry animation on every screen render */
#app > * { animation: rise-in 0.28s ease both; }
@keyframes rise-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  #app > *, .hpbar i, .xpbar > i { animation: none !important; transition: none !important; }
}

/* ---- course cards / world map ---- */
.course-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }
.course-card {
  background: var(--panel);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: var(--line);
  border-top: 3px solid var(--zone-accent, var(--accent));
  border-radius: var(--radius); padding: 18px;
  box-shadow: var(--shadow), var(--edge);
  cursor: pointer; transition: transform 0.14s ease, border-color 0.14s ease, box-shadow 0.14s;
}
.course-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(3, 5, 18, 0.6), var(--edge);
}
.course-card h3 { margin: 0 0 6px; font-size: 17px; letter-spacing: -0.01em; }
.course-card p { margin: 0 0 14px; color: var(--ink-dim); font-size: 13.5px; line-height: 1.45; }
.course-meta { display: flex; gap: 8px; flex-wrap: wrap; font-size: 12px; }
.tag { background: color-mix(in srgb, var(--ink) 7%, transparent); color: var(--ink-dim); padding: 3px 10px; border-radius: 999px; font-weight: 600; }
.tag.stars { color: var(--gold); }
.progress-line { height: 6px; background: color-mix(in srgb, var(--ink) 8%, transparent); border-radius: 999px; margin-top: 14px; overflow: hidden; }
.progress-line > i { display: block; height: 100%; background: linear-gradient(90deg, var(--good), var(--accent-2)); transition: width 0.4s ease; }

/* ---- world map zones ---- */
.zone { margin: 30px 0 8px; }
.zone-title {
  font-size: 16px; font-weight: 800; margin: 0 0 12px; color: var(--ink);
  display: flex; align-items: center; gap: 10px; letter-spacing: -0.01em;
}
.zone-title::after { content: ""; flex: 1; height: 1px; background: linear-gradient(90deg, var(--zone-accent, var(--accent)), transparent); opacity: 0.5; }
.zone-foundations { --zone-accent: var(--z-foundations); }
.zone-llm { --zone-accent: var(--z-llm); }
.zone-rag { --zone-accent: var(--z-rag); }
.zone-agents { --zone-accent: var(--z-agents); }
.zone-production { --zone-accent: var(--z-production); }
.zone-frontier { --zone-accent: var(--z-frontier); }

/* ---- section list ---- */
.section-list { display: flex; flex-direction: column; gap: 12px; }
.section-row {
  display: flex; align-items: center; gap: 16px;
  background: var(--panel); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius); padding: 16px 18px;
  border: var(--line); box-shadow: var(--edge);
}
.section-row.locked { opacity: 0.55; }
.section-num {
  width: 42px; height: 42px; flex: none; border-radius: 50%;
  display: grid; place-items: center; font-weight: 800; font-size: 17px;
  background: var(--panel-2); box-shadow: var(--edge);
}
.section-row.done .section-num { background: var(--good); color: #titles06301c; color: #06301c; }
.section-row.locked .section-num { background: var(--lock); }
.section-body { flex: 1; min-width: 0; }
.section-body h4 { margin: 0 0 2px; letter-spacing: -0.01em; }
.section-body .muted { color: var(--ink-dim); font-size: 13px; }
.section-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* ---- buttons ---- */
.btn {
  border: none; border-radius: 12px; padding: 10px 16px; font-weight: 700; font-size: 14px;
  cursor: pointer; color: var(--on-accent); background: var(--grad);
  transition: filter 0.12s, transform 0.1s;
  text-decoration: none; display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-height: 40px; box-shadow: var(--glow);
}
.btn:hover { filter: brightness(1.08); }
.btn:active { transform: scale(0.98); }
.btn.ghost { background: var(--panel-2); color: var(--ink); box-shadow: var(--edge); }
.btn.boss { background: linear-gradient(120deg, var(--hot), #b036e8); color: #fff; box-shadow: var(--glow-hot); }
.btn.good { background: var(--good); color: #06301c; }
.btn.warn { background: var(--warn); color: #3a2400; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn.lg { padding: 13px 22px; font-size: 15px; min-height: 48px; }

/* ---- quiz / boss panel ---- */
.card-panel {
  background: var(--panel);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border: var(--line);
  border-radius: var(--radius); padding: 26px;
  box-shadow: var(--shadow), var(--edge);
  max-width: 760px; margin: 0 auto;
}
.q-progress { color: var(--ink-dim); font-weight: 600; margin-bottom: 10px; display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.q-text { font-size: clamp(17px, 3.5vw, 20px); font-weight: 700; margin: 0 0 20px; line-height: 1.4; letter-spacing: -0.01em; }
.q-label { color: var(--ink-dim); font-weight: 700; margin: 0 0 6px; font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; }

.options { display: flex; flex-direction: column; gap: 12px; counter-reset: opt; }
.option {
  text-align: left; padding: 13px 16px 13px 12px; border-radius: var(--radius-sm); cursor: pointer;
  background: var(--panel-2); border: 2px solid transparent; color: var(--ink);
  font-size: 14.5px; line-height: 1.45; transition: border-color 0.1s, background 0.1s, transform 0.1s;
  display: flex; align-items: flex-start; gap: 12px; min-height: 48px;
  box-shadow: var(--edge);
}
.option::before {
  counter-increment: opt; content: counter(opt, upper-alpha);
  flex: 0 0 26px; height: 26px; border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  background: rgba(255, 255, 255, 0.07); color: var(--ink-dim);
  font-weight: 800; font-size: 12px; margin-top: 1px;
}
.option:hover:not(:disabled) { border-color: var(--accent); transform: translateX(2px); }
.option:disabled { cursor: default; }
.option.correct { border-color: var(--good); background: rgba(52, 211, 153, 0.14); }
.option.correct::before { background: var(--good); color: #06301c; }
.option.wrong { border-color: var(--bad); background: rgba(251, 113, 133, 0.13); }
.option.wrong::before { background: var(--bad); color: #3d0912; }
.option.eliminated { opacity: 0.28; text-decoration: line-through; }

.feedback { margin-top: 20px; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.feedback .verdict { font-weight: 800; }
.verdict.ok { color: var(--good); }
.verdict.no { color: var(--bad); }

.timer { font-variant-numeric: tabular-nums; font-weight: 800; }
.timer.danger { color: var(--bad); animation: timer-pulse 1s infinite; }
@keyframes timer-pulse { 50% { opacity: 0.55; } }

/* ---- flashcards ---- */
.flashcard {
  min-height: 220px; display: grid; place-items: center; text-align: center;
  font-size: 18px; line-height: 1.55; cursor: pointer; user-select: none; padding: 30px;
  transition: transform 0.15s;
}
.flashcard:active { transform: scale(0.985); }
.flashcard .hint { color: var(--ink-dim); font-size: 13px; margin-top: 16px; }
.rate-row { display: flex; gap: 10px; justify-content: center; margin-top: 18px; flex-wrap: wrap; }

/* ---- profile ---- */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; }
.stat-box {
  background: var(--panel); border-radius: var(--radius); padding: 18px; text-align: center;
  border: var(--line); box-shadow: var(--edge);
}
.stat-box .big { font-size: 30px; font-weight: 800; letter-spacing: -0.02em; }
.stat-box .lbl { color: var(--ink-dim); font-weight: 600; margin-top: 4px; font-size: 13px; }
.badges { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 8px; }
.badge {
  background: var(--panel-2); border: 1px solid var(--gold); border-radius: 999px;
  padding: 7px 14px; font-weight: 700; font-size: 13px; display: inline-flex; gap: 6px; align-items: center;
}
.empty-note { color: var(--ink-dim); }

/* ---- toast ---- */
#toast {
  position: fixed; bottom: 84px; left: 50%; transform: translateX(-50%);
  background: var(--panel-2); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  color: var(--ink); padding: 12px 20px; border-radius: 14px;
  box-shadow: var(--shadow); font-weight: 700; opacity: 0; pointer-events: none;
  transition: opacity 0.25s, transform 0.25s; z-index: 50; border: 1px solid var(--gold);
  max-width: min(92vw, 480px); text-align: center;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(-6px); }

/* ---- load error ---- */
.load-error {
  max-width: 640px; margin: 60px auto; background: var(--panel-solid); padding: 28px;
  border-radius: var(--radius); border: 1px solid var(--bad);
}
.load-error pre, code { background: var(--bg); padding: 2px 6px; border-radius: 6px; }
.load-error pre { padding: 12px; overflow-x: auto; }

.result-screen { text-align: center; }
.result-screen .score {
  font-size: 54px; font-weight: 800; margin: 8px 0; letter-spacing: -0.03em;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---- order-the-steps ---- */
.order-list { display: flex; flex-direction: column; gap: 10px; }
.order-step {
  text-align: left; padding: 12px 14px 12px 12px; border-radius: var(--radius-sm); cursor: pointer;
  background: var(--panel-2); border: 2px solid transparent; color: var(--ink);
  font-size: 14px; line-height: 1.4; display: flex; align-items: center; gap: 10px;
  transition: border-color 0.1s, background 0.1s; min-height: 48px; box-shadow: var(--edge);
}
.order-step:hover:not(:disabled):not(.picked) { border-color: var(--accent); }
.order-step.picked { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent); }
.order-step.correct { border-color: var(--good); background: rgba(52, 211, 153, 0.14); }
.order-step.wrong { border-color: var(--bad); background: rgba(251, 113, 133, 0.13); }
.pick-badge {
  flex: 0 0 26px; height: 26px; border-radius: 50%; background: var(--bg);
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 13px; color: var(--gold);
}

/* ---- match-the-pairs ---- */
.match-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.match-col { display: flex; flex-direction: column; gap: 10px; }
.match-item {
  text-align: left; padding: 12px; border-radius: var(--radius-sm); cursor: pointer;
  background: var(--panel-2); border: 2px solid transparent; color: var(--ink);
  font-size: 13px; line-height: 1.4; position: relative;
  transition: border-color 0.1s, background 0.1s; min-height: 48px; box-shadow: var(--edge);
}
.match-item:hover:not(:disabled) { border-color: var(--accent); }
.match-item.selected { border-color: var(--gold); background: rgba(252, 211, 77, 0.10); }
.match-item.paired { border-color: var(--accent); }
.match-item.correct { border-color: var(--good); background: rgba(52, 211, 153, 0.14); }
.match-item.wrong { border-color: var(--bad); background: rgba(251, 113, 133, 0.13); }
.pair-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 20px; height: 20px; border-radius: 50%; background: var(--bg);
  font-weight: 800; font-size: 11px; color: var(--gold); margin-right: 8px;
}
@media (max-width: 640px) { .match-grid { grid-template-columns: 1fr; } }

/* ---- continue hero card ---- */
.continue-card {
  display: flex; align-items: center; gap: 14px; text-decoration: none; color: var(--ink);
  background: linear-gradient(120deg, color-mix(in srgb, var(--accent) 14%, transparent), color-mix(in srgb, var(--hot) 7%, transparent));
  border: 1px solid color-mix(in srgb, var(--accent) 55%, transparent); border-radius: var(--radius);
  padding: 14px 18px; margin: 0 0 16px; font-weight: 700;
  transition: transform 0.12s, box-shadow 0.12s; position: relative; overflow: hidden;
  box-shadow: var(--glow);
}
.continue-card::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(100deg, transparent 30%, rgba(255, 255, 255, 0.06) 50%, transparent 70%);
  transform: translateX(-100%); animation: sheen 3.2s ease-in-out infinite;
}
@keyframes sheen { 40%, 100% { transform: translateX(100%); } }
.continue-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.cont-play {
  flex: 0 0 40px; height: 40px; border-radius: 50%; background: var(--grad);
  display: inline-flex; align-items: center; justify-content: center; font-size: 15px;
  color: var(--on-accent);
}
.cont-lbl { color: var(--ink-dim); font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; }

/* ---- weekly quests ---- */
.quest-board {
  background: var(--panel); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border: var(--line); border-radius: var(--radius);
  padding: 16px 18px; margin: 0 0 10px; box-shadow: var(--edge);
}
.quest-board h2 { margin: 0 0 10px; font-size: 14px; color: var(--gold); text-transform: uppercase; letter-spacing: 0.05em; }
.quest-row { display: flex; align-items: center; gap: 12px; padding: 6px 0; font-size: 14px; }
.quest-row.done { opacity: 0.7; }
.quest-label { flex: 1 1 auto; }
.quest-bar { flex: 0 0 120px; height: 8px; border-radius: 999px; background: color-mix(in srgb, var(--ink) 8%, transparent); overflow: hidden; }
.quest-bar i { display: block; height: 100%; background: var(--grad); transition: width 0.4s ease; }
.quest-count { flex: 0 0 64px; text-align: right; color: var(--ink-dim); font-weight: 700; font-size: 12px; }

/* ---- mastery stars + lesson dots ---- */
.stars { color: var(--gold); letter-spacing: 0.08em; font-size: 13px; }
.lesson-dots { margin-top: 6px; display: flex; flex-wrap: wrap; gap: 4px; }
.dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
.dot.new { background: color-mix(in srgb, var(--ink) 15%, transparent); }
.dot.learning { background: var(--warn); }
.dot.mastered { background: var(--good); }

/* ---- juice: floating XP + confetti ---- */
.xp-float {
  position: fixed; top: 58px; right: 26px; z-index: 60; pointer-events: none;
  font-weight: 800; color: var(--gold); font-size: 16px; text-shadow: 0 1px 6px rgba(0, 0, 0, 0.5);
  animation: xp-rise 1.15s ease-out forwards;
}
@keyframes xp-rise {
  0% { transform: translateY(8px); opacity: 0; }
  20% { opacity: 1; }
  100% { transform: translateY(-34px); opacity: 0; }
}
.confetti {
  position: fixed; top: -12px; width: 9px; height: 14px; z-index: 70; pointer-events: none;
  border-radius: 2px; animation: confetti-fall linear forwards;
}
@keyframes confetti-fall {
  0% { transform: translateY(0) rotate(0deg); opacity: 1; }
  100% { transform: translateY(105vh) rotate(540deg); opacity: 0.6; }
}
.session-summary { margin-top: 4px; }

/* ---- boss HP bar + phases ---- */
.boss-bar { display: flex; align-items: center; gap: 12px; margin: 0 0 14px; }
.boss-face { font-size: 26px; }
.hpbar { flex: 1 1 auto; height: 12px; border-radius: 999px; background: color-mix(in srgb, var(--ink) 8%, transparent); overflow: hidden; }
.hpbar i { display: block; height: 100%; transition: width 0.3s ease; }
.hpbar.phase-1 i { background: linear-gradient(90deg, #2ee6a8, #a3e635); }
.hpbar.phase-2 i { background: linear-gradient(90deg, #ffb454, #ffd23f); }
.hpbar.phase-3 i { background: linear-gradient(90deg, #ff4d9d, #ff5c7a); }
.hp-text { font-weight: 800; color: var(--ink-dim); font-size: 13px; white-space: nowrap; }

/* ---- confidence bet ---- */
.bet-toggle {
  margin-top: 14px; padding: 9px 16px; border-radius: 999px; cursor: pointer;
  background: transparent; border: 1px dashed var(--ink-dim); color: var(--ink-dim);
  font-weight: 700; font-size: 13px; transition: all 0.12s; min-height: 40px;
}
.bet-toggle:hover { border-color: var(--gold); color: var(--gold); }
.bet-toggle.active {
  border: 1px solid var(--gold); color: var(--gold);
  background: rgba(252, 211, 77, 0.12); box-shadow: 0 0 14px rgba(252, 211, 77, 0.3);
}

/* ---- gauntlet ---- */
.gauntlet-hud { display: flex; gap: 8px; flex-wrap: wrap; }
.gauntlet-hud .pill { padding: 4px 10px; font-size: 13px; }
.relic-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 18px; }
.relic-card {
  flex: 0 1 190px; padding: 18px 14px; border-radius: var(--radius); cursor: pointer;
  background: var(--panel-2); border: 2px solid transparent; color: var(--ink);
  display: flex; flex-direction: column; gap: 8px; align-items: center; text-align: center;
  transition: border-color 0.12s, transform 0.12s; box-shadow: var(--edge);
}
.relic-card:hover { border-color: var(--gold); transform: translateY(-3px); }
.relic-icon { font-weight: 800; font-size: 15px; }
.relic-desc { color: var(--ink-dim); font-size: 12px; line-height: 1.4; }

/* ---- home mode row + mute ---- */
.mode-row { display: flex; gap: 12px; margin: 0 0 22px; flex-wrap: wrap; }
button.pill.mute {
  cursor: pointer; border: 1px solid rgba(255, 255, 255, 0.12);
  background: var(--panel-2); font: inherit; color: var(--ink);
}
button.pill.mute:hover { border-color: var(--accent); }

/* ---- combo chip ---- */
.combo-chip {
  display: inline-block; margin-left: 8px; padding: 2px 10px; border-radius: 999px;
  background: linear-gradient(90deg, rgba(251, 146, 60, 0.25), rgba(252, 211, 77, 0.25));
  border: 1px solid var(--gold); color: var(--gold); font-weight: 800; font-size: 12px;
  animation: combo-pop 0.35s ease;
}
@keyframes combo-pop {
  0% { transform: scale(0.6); opacity: 0; }
  60% { transform: scale(1.15); }
  100% { transform: scale(1); opacity: 1; }
}

/* ---- bottom tab bar (mobile app-style nav) ---- */
.tabbar {
  display: none;
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 40;
  background: var(--chrome);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-top: var(--line);
  padding: 6px 8px calc(6px + env(safe-area-inset-bottom, 0px));
}
.tabbar a {
  flex: 1; display: flex; flex-direction: column; align-items: center; gap: 2px;
  color: var(--ink-dim); text-decoration: none; font-size: 11px; font-weight: 700;
  padding: 6px 4px; border-radius: 10px; min-height: 48px; justify-content: center;
}
.tabbar a .ico { font-size: 20px; line-height: 1; }
.tabbar a.active { color: var(--ink); background: color-mix(in srgb, var(--accent) 13%, transparent); }

/* ---- mobile pass ---- */
@media (max-width: 640px) {
  .tabbar { display: flex; }
  .topnav { display: none; }                /* bottom tabs replace top nav */
  #app { padding: 18px 14px calc(96px + env(safe-area-inset-bottom, 0px)); }
  .topbar { flex-wrap: wrap; gap: 8px 12px; padding: 10px 14px; }
  .topbar .brand { order: 1; font-size: 17px; }
  .stats-strip { order: 3; flex-basis: 100%; justify-content: space-between; gap: 6px; flex-wrap: nowrap; }
  .stats-strip .lbl { display: none; }
  .stats-strip .xpbar { display: none; }
  .stats-strip .pill { padding: 4px 8px; font-size: 12px; }
  .quest-bar { flex-basis: 70px; }
  .section-row { flex-wrap: wrap; }
  .section-actions { flex-basis: 100%; }
  .section-actions .btn { flex: 1 1 auto; }
  .mode-row .btn.lg { flex: 1 1 100%; }
  .card-panel { padding: 18px 16px; }
  .relic-card { flex: 1 1 100%; }
  #toast { bottom: calc(88px + env(safe-area-inset-bottom, 0px)); }
  .xp-float { top: auto; bottom: calc(100px + env(safe-area-inset-bottom, 0px)); right: 16px; }
}

/* ---- theme switcher (profile) ---- */
.theme-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 8px; }

/* deploy 18806 */