/* ============================================================
   TOKENFALL — The LLM Engineering Gauntlet
   Visual system: deep-space glass HUD over a neon 3D void.
   ============================================================ */

@font-face {
  font-family: 'Orbitron';
  font-style: normal;
  font-weight: 400 900;
  font-display: swap;
  src: url('../fonts/orbitron-var.woff2') format('woff2');
}
@font-face { font-family:'Rajdhani'; font-style:normal; font-weight:500; font-display:swap;
  src:url('../fonts/rajdhani-500.woff2') format('woff2'); }
@font-face { font-family:'Rajdhani'; font-style:normal; font-weight:600; font-display:swap;
  src:url('../fonts/rajdhani-600.woff2') format('woff2'); }
@font-face { font-family:'Rajdhani'; font-style:normal; font-weight:700; font-display:swap;
  src:url('../fonts/rajdhani-700.woff2') format('woff2'); }

:root {
  --bg0: #04050d;
  --bg1: #0a0d20;
  --ink: #eaf2ff;
  --muted: #93a1c4;
  --cyan: #62f0d8;
  --cyan-soft: rgba(98, 240, 216, 0.32);
  --cyan-faint: rgba(98, 240, 216, 0.14);
  --gold: #ffc857;
  --magenta: #ff5f9e;
  --red: #ff4d5e;
  --violet: #8b7bff;
  --green: #7dffa8;
  --panel: rgba(9, 13, 30, 0.78);
  --panel-solid: #0b1024;
  --stroke: rgba(140, 170, 255, 0.16);
  --stroke-hi: rgba(98, 240, 216, 0.5);
  --font-display: 'Orbitron', 'Avenir Next', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'Rajdhani', 'Avenir Next', 'Segoe UI', system-ui, sans-serif;
  --safe-t: env(safe-area-inset-top, 0px);
  --safe-b: env(safe-area-inset-bottom, 0px);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; overflow: hidden; }
body {
  background: var(--bg0);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.35;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  touch-action: none;
  overscroll-behavior: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}
#app { position: fixed; inset: 0; }

#gl { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }

.layer { position: absolute; inset: 0; pointer-events: none; }
.layer button, .layer .btn, .layer .mode-card, .layer .zone-card, .layer .seg button { pointer-events: auto; }

#labels, #floaters { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
#flash, #vignette { pointer-events: none; }

/* ---------- atmosphere overlays ---------- */
#vignette {
  position: absolute; inset: 0; pointer-events: none; z-index: 3;
  background:
    radial-gradient(ellipse at 50% 42%, transparent 52%, rgba(2, 3, 10, 0.55) 100%),
    linear-gradient(180deg, rgba(2,3,10,.35) 0%, transparent 18%, transparent 82%, rgba(2,3,10,.45) 100%);
}
#vignette::after {
  content: ''; position: absolute; inset: 0; opacity: .05;
  background: repeating-linear-gradient(0deg, rgba(255,255,255,.5) 0 1px, transparent 1px 3px);
  mix-blend-mode: overlay;
}
#flash {
  position: absolute; inset: 0; pointer-events: none; z-index: 4;
  opacity: 0; background: radial-gradient(circle at 50% 45%, var(--flash-c, #62f0d8), transparent 65%);
}
#flash.on { animation: flash-pop .5s ease-out; }
@keyframes flash-pop { 0% { opacity: .55; } 100% { opacity: 0; } }

/* ---------- buttons ---------- */
.btn {
  font-family: var(--font-body); font-weight: 700; font-size: 1.02rem;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink); background: rgba(16, 22, 48, 0.72);
  border: 1px solid var(--stroke); border-radius: 10px;
  padding: 0.62em 1.5em; cursor: pointer;
  transition: border-color .15s, background .15s, transform .1s, box-shadow .15s;
}
.btn:hover, .btn:focus-visible { border-color: var(--stroke-hi); background: rgba(24, 34, 70, 0.85); box-shadow: 0 0 18px rgba(98,240,216,.15); outline: none; }
.btn:active { transform: translateY(1px) scale(.99); }
.btn-primary {
  background: linear-gradient(135deg, rgba(31, 214, 182, .28), rgba(28, 34, 92, .65));
  border-color: rgba(98, 240, 216, 0.65); color: #eafffa;
  box-shadow: 0 0 24px rgba(98, 240, 216, 0.22), inset 0 0 12px rgba(98, 240, 216, 0.1);
}
.btn-primary:hover, .btn-primary:focus-visible { box-shadow: 0 0 34px rgba(98, 240, 216, 0.42); }
.btn-big { font-size: 1.22rem; padding: .72em 2.4em; }
.btn-danger { border-color: rgba(255, 93, 120, 0.4); color: #ffb9c6; }
.btn-danger:hover, .btn-danger:focus-visible { border-color: rgba(255, 93, 120, 0.8); box-shadow: 0 0 18px rgba(255, 77, 94, .2); }
.icon-btn {
  width: 44px; height: 44px; border-radius: 10px; border: 1px solid var(--stroke);
  background: rgba(16, 22, 48, 0.72); color: var(--ink); cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: border-color .15s, box-shadow .15s;
}
.icon-btn:hover, .icon-btn:focus-visible { border-color: var(--stroke-hi); box-shadow: 0 0 14px rgba(98,240,216,.2); outline: none; }
.icon-btn svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2.4; stroke-linecap: round; }

:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

/* ---------- HUD ---------- */
#hud { z-index: 5; }
.hud-top {
  position: absolute; top: calc(10px + var(--safe-t)); left: 12px; right: 12px;
  display: flex; justify-content: space-between; align-items: flex-start; gap: 8px;
}
.hud-cell { display: flex; gap: 10px; align-items: flex-start; }
.hud-label { font-size: .68rem; letter-spacing: .22em; color: var(--muted); font-weight: 600; }
.score-block { min-width: 130px; }
.score-value {
  font-family: var(--font-display); font-weight: 800; font-size: clamp(1.35rem, 3.4vw, 1.9rem);
  color: var(--ink); text-shadow: 0 0 18px rgba(98, 240, 216, .35); line-height: 1.05;
}
.best-line { font-size: .72rem; letter-spacing: .14em; color: var(--muted); }
.hud-center { flex-direction: column; align-items: center; gap: 4px; }
.zone-chip {
  font-family: var(--font-display); font-weight: 700; font-size: .78rem; letter-spacing: .26em;
  color: var(--cyan); padding: 4px 14px; border: 1px solid var(--cyan-soft); border-radius: 999px;
  background: rgba(9, 13, 30, 0.6); white-space: nowrap;
}
.qcount-chip { font-size: .78rem; letter-spacing: .2em; color: var(--muted); font-weight: 600; }
.timer-wrap { position: relative; width: 66px; height: 66px; }
.timer-ring { width: 66px; height: 66px; transform: rotate(-90deg); }
.timer-bg { fill: none; stroke: rgba(120, 140, 190, 0.22); stroke-width: 5; }
.timer-fg {
  fill: none; stroke: var(--gold); stroke-width: 5; stroke-linecap: round;
  stroke-dasharray: 188.5; transition: stroke .3s;
}
.timer-num {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-weight: 800; font-size: 1.18rem; color: var(--ink);
}
.timer-wrap.warn .timer-fg { stroke: var(--red); }
.timer-wrap.warn .timer-num { color: var(--red); animation: throb .5s infinite alternate; }
.timer-wrap.frozen .timer-fg { stroke: #7dd8ff; }
@keyframes throb { from { transform: scale(1); } to { transform: scale(1.14); } }

.combo-chip {
  position: absolute; top: calc(96px + var(--safe-t)); left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 4px 18px 6px; border-radius: 12px; background: rgba(9, 13, 30, 0.66);
  border: 1px solid rgba(255, 200, 87, 0.35);
}
.combo-chip #combo-mult { font-family: var(--font-display); font-weight: 800; font-size: 1.06rem; color: var(--gold); text-shadow: 0 0 14px rgba(255,200,87,.4); }
.combo-word { font-size: .6rem; letter-spacing: .3em; color: var(--muted); }
.combo-bar { width: 86px; height: 3px; background: rgba(120,140,190,.25); border-radius: 2px; overflow: hidden; }
#combo-fill { height: 100%; width: 0%; background: linear-gradient(90deg, var(--gold), var(--magenta)); border-radius: 2px; transition: width .25s; }
.combo-chip.pop { animation: combo-pop .35s ease-out; }
@keyframes combo-pop { 40% { transform: translateX(-50%) scale(1.22); } }

.hud-bottom {
  position: absolute; left: 12px; right: 12px; bottom: calc(10px + var(--safe-b));
  display: flex; justify-content: space-between; align-items: flex-end; gap: 10px;
}
.lives { display: flex; gap: 7px; min-width: 90px; }
.life-core { width: 22px; height: 22px; filter: drop-shadow(0 0 6px rgba(98,240,216,.5)); transition: opacity .4s, transform .4s; }
.life-core.dead { opacity: .16; filter: none; transform: scale(.72); }
.life-core.breaking { animation: life-break .6s ease-in forwards; }
@keyframes life-break { 30% { transform: scale(1.6) rotate(20deg); opacity: 1; } 100% { transform: scale(.72) rotate(80deg); opacity: .16; } }

.lifelines { display: flex; gap: 8px; }
.lifeline {
  display: flex; flex-direction: column; align-items: center; gap: 1px;
  font-family: var(--font-body); color: var(--ink); cursor: pointer;
  background: rgba(16, 22, 48, 0.72); border: 1px solid var(--stroke); border-radius: 10px;
  padding: 6px 12px 5px; min-width: 74px;
  transition: border-color .15s, box-shadow .15s, opacity .15s;
}
.lifeline:hover, .lifeline:focus-visible { border-color: var(--stroke-hi); box-shadow: 0 0 14px rgba(98,240,216,.18); outline: none; }
.ll-key { font-size: .6rem; letter-spacing: .2em; color: var(--muted); }
.ll-name { font-weight: 700; font-size: .86rem; letter-spacing: .12em; }
.ll-cost { font-size: .66rem; color: var(--cyan); font-weight: 700; }
.lifeline:disabled { opacity: .38; cursor: default; box-shadow: none; }
.lifeline.flash-ready { animation: ll-ready .6s ease-out; }
@keyframes ll-ready { 40% { box-shadow: 0 0 20px rgba(98,240,216,.5); border-color: var(--cyan); } }

.energy-wrap { min-width: 130px; text-align: right; }
.energy-bar {
  width: 100%; height: 10px; margin-top: 4px; border-radius: 6px;
  background: rgba(120, 140, 190, 0.2); overflow: hidden;
  border: 1px solid var(--stroke);
}
#energy-fill { height: 100%; width: 0%; background: linear-gradient(90deg, #3ec9b4, var(--cyan)); box-shadow: 0 0 10px rgba(98,240,216,.5); transition: width .3s; }

/* ---------- question panel ---------- */
.question-panel {
  position: absolute; top: calc(84px + var(--safe-t)); left: 50%; transform: translateX(-50%);
  width: min(680px, calc(100vw - 24px));
  background: linear-gradient(180deg, rgba(10, 14, 32, 0.9), rgba(8, 11, 26, 0.82));
  border: 1px solid var(--stroke); border-radius: 14px;
  padding: 12px 18px 14px; text-align: center;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(150, 180, 255, 0.08);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.q-meta { display: flex; justify-content: center; gap: 8px; margin-bottom: 7px; flex-wrap: wrap; }
.q-chip {
  font-size: .64rem; letter-spacing: .22em; font-weight: 700; color: var(--muted);
  border: 1px solid var(--stroke); padding: 2px 10px; border-radius: 999px; text-transform: uppercase;
}
.q-chip-shape { color: var(--violet); border-color: rgba(139, 123, 255, 0.4); }
.q-chip-tier { color: var(--gold); border-color: rgba(255, 200, 87, 0.4); }
.q-text {
  font-size: clamp(1.02rem, 2.6vw, 1.22rem); font-weight: 600; line-height: 1.32;
  color: var(--ink); text-wrap: balance;
}
.q-code {
  font-family: 'SF Mono', ui-monospace, Menlo, Consolas, monospace;
  font-size: clamp(.72rem, 1.9vw, .88rem); text-align: left;
  background: rgba(3, 5, 14, 0.85); border: 1px solid var(--stroke);
  border-radius: 8px; padding: 8px 12px; margin: 4px 0 8px; color: #b8e8ff;
  white-space: pre-wrap; overflow-x: auto; line-height: 1.45;
}
.order-hint {
  position: absolute; top: calc(16px + var(--safe-t)); left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 3px;
}
#order-slots { display: flex; gap: 6px; }
.order-slot {
  min-width: 34px; height: 26px; padding: 0 8px; border-radius: 7px;
  border: 1px dashed rgba(139, 123, 255, 0.5); color: #cfc8ff;
  font-size: .78rem; font-weight: 700; letter-spacing: .06em;
  display: flex; align-items: center; justify-content: center; background: rgba(12, 10, 34, 0.6);
  transition: border-color .2s, background .2s, color .2s;
}
.order-slot.filled { border-style: solid; border-color: var(--green); color: var(--green); background: rgba(20, 46, 34, 0.6); }

/* ---------- 3D-projected labels ---------- */
.orb-label {
  position: absolute; transform: translate(-50%, -50%);
  max-width: min(210px, 30vw); text-align: center;
  font-size: clamp(.78rem, 2vw, .95rem); font-weight: 600; line-height: 1.18;
  color: var(--ink); padding: 5px 12px 6px; border-radius: 10px;
  background: rgba(7, 10, 24, 0.82); border: 1px solid rgba(98, 240, 216, 0.3);
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.9);
  pointer-events: none; will-change: transform, opacity;
  transition: opacity .18s;
}
.orb-label .orb-key {
  display: inline-block; font-family: var(--font-display); font-size: .58rem; font-weight: 700;
  color: var(--cyan); margin-right: 6px; letter-spacing: .08em;
}
.orb-label.tf { border-color: rgba(139, 123, 255, 0.5); font-size: clamp(1rem, 3vw, 1.3rem); font-weight: 700; letter-spacing: .1em; padding: 10px 26px; }
.orb-label.code { font-family: 'SF Mono', ui-monospace, Menlo, Consolas, monospace; font-size: clamp(.66rem, 1.7vw, .8rem); white-space: pre-wrap; }
.orb-label.noise { border-color: rgba(255, 77, 94, 0.55); color: #ffb3ba; animation: noise-jitter .32s infinite; }
.orb-label.resolved-correct { border-color: var(--green); color: var(--green); }
.orb-label.resolved-wrong { border-color: var(--red); color: #ff8d99; }
.orb-label.faded { opacity: .28; }
.orb-label.locked-good { border-color: var(--green); }
.orb-label.dead { opacity: 0; }
@keyframes noise-jitter { 0% { transform: translate(-50%,-50%); } 33% { transform: translate(calc(-50% + 2px), calc(-50% - 1px)); } 66% { transform: translate(calc(-50% - 2px), calc(-50% + 1px)); } 100% { transform: translate(-50%,-50%); } }

.charge-ring {
  position: absolute; transform: translate(-50%, -50%); pointer-events: none;
  width: 64px; height: 64px;
}
.charge-ring circle { fill: none; stroke-width: 4; stroke-linecap: round; }
.charge-ring .cr-bg { stroke: rgba(255, 255, 255, 0.12); }
.charge-ring .cr-fg { stroke: var(--cyan); filter: drop-shadow(0 0 6px rgba(98,240,216,.8)); }

/* ---------- floaters ---------- */
.floater {
  position: absolute; transform: translate(-50%, -50%);
  font-family: var(--font-display); font-weight: 800; white-space: nowrap;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.85); pointer-events: none;
  will-change: transform, opacity;
}
.floater.score { color: var(--gold); font-size: 1.35rem; }
.floater.big { font-size: 1.9rem; }
.floater.bad { color: var(--red); }
.floater.good { color: var(--green); }
.floater.info { color: #9fd0ff; font-size: 1rem; letter-spacing: .18em; }
.floater.rise { animation: floater-rise 1.15s cubic-bezier(.2,.7,.3,1) forwards; }
@keyframes floater-rise { 0% { opacity: 0; } 12% { opacity: 1; } 100% { opacity: 0; transform: translate(-50%, -160%) scale(1.05); } }

/* ---------- screens ---------- */
#screens { z-index: 8; }
.screen {
  position: absolute; inset: 0; display: none;
  align-items: center; justify-content: center; flex-direction: column;
  padding: 20px; padding-top: calc(20px + var(--safe-t)); padding-bottom: calc(20px + var(--safe-b));
  overflow-y: auto;
}
.screen.active { display: flex; animation: screen-in .3s ease-out; }
@keyframes screen-in { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.screen-title {
  font-family: var(--font-display); font-weight: 800; letter-spacing: .3em;
  font-size: clamp(1.05rem, 3.4vw, 1.5rem); color: var(--ink);
  margin-bottom: 18px; text-shadow: 0 0 24px rgba(98, 240, 216, 0.35);
}

/* title */
.screen-title { justify-content: center; }
.title-stack { text-align: center; display: flex; flex-direction: column; align-items: center; gap: 14px; }
.title-kicker { font-size: clamp(.66rem, 2vw, .8rem); letter-spacing: .5em; color: var(--muted); font-weight: 600; }
.game-logo {
  font-family: var(--font-display); font-weight: 900; line-height: .95;
  font-size: clamp(3rem, 12vw, 6.2rem); letter-spacing: .02em;
}
.logo-t { color: var(--ink); text-shadow: 0 0 30px rgba(98, 240, 216, 0.55), 0 0 90px rgba(98, 240, 216, 0.25); }
.logo-fall {
  color: transparent; -webkit-text-stroke: 2px var(--cyan);
  text-shadow: 0 0 44px rgba(98, 240, 216, 0.35);
}
.title-sub { color: var(--muted); font-size: clamp(.92rem, 2.6vw, 1.08rem); font-weight: 500; }
.title-actions { display: flex; flex-direction: column; gap: 12px; align-items: center; margin-top: 8px; }
.title-row { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.title-foot { color: var(--muted); font-size: .74rem; letter-spacing: .14em; opacity: .75; }

/* menu cards */
.menu-cards { display: flex; flex-direction: column; gap: 12px; width: min(560px, 92vw); }
.mode-card {
  text-align: left; font-family: var(--font-body); color: var(--ink); cursor: pointer;
  background: linear-gradient(135deg, rgba(16, 22, 48, 0.85), rgba(10, 14, 32, 0.85));
  border: 1px solid var(--stroke); border-radius: 14px; padding: 14px 18px;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}
.mode-card:hover, .mode-card:focus-visible { border-color: var(--stroke-hi); transform: translateY(-2px); box-shadow: 0 14px 34px rgba(0,0,0,.45), 0 0 22px rgba(98,240,216,.12); outline: none; }
.mode-head { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; margin-bottom: 3px; }
.mode-name { font-family: var(--font-display); font-weight: 700; letter-spacing: .18em; font-size: 1.02rem; color: var(--cyan); }
.mode-tag { font-size: .68rem; letter-spacing: .2em; color: var(--gold); border: 1px solid rgba(255,200,87,.4); border-radius: 999px; padding: 2px 9px; white-space: nowrap; }
.mode-desc { color: var(--muted); font-size: .95rem; font-weight: 500; }
.menu-foot { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; justify-content: center; }

/* zones */
.zone-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; width: min(760px, 94vw); }
.zone-card {
  font-family: var(--font-body); color: var(--ink); cursor: pointer; text-align: left;
  border: 1px solid var(--stroke); border-radius: 12px; padding: 12px 14px;
  background: linear-gradient(160deg, rgba(16,22,48,.85), rgba(9,12,28,.9));
  position: relative; overflow: hidden; transition: border-color .15s, transform .15s;
}
.zone-card:hover:not(:disabled), .zone-card:focus-visible:not(:disabled) { border-color: var(--stroke-hi); transform: translateY(-2px); outline: none; }
.zone-card:disabled { opacity: .45; cursor: default; }
.zone-num { font-size: .64rem; letter-spacing: .3em; color: var(--muted); font-weight: 700; }
.zone-name { font-family: var(--font-display); font-weight: 700; font-size: .92rem; letter-spacing: .1em; margin: 3px 0 5px; }
.zone-topics { font-size: .78rem; color: var(--muted); font-weight: 600; line-height: 1.3; }
.zone-best { position: absolute; top: 10px; right: 12px; font-size: .66rem; color: var(--gold); font-weight: 700; letter-spacing: .08em; }
.zone-lock { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-size: .72rem; letter-spacing: .26em; color: #7c89ad; background: rgba(5, 7, 18, 0.55); font-weight: 700; }

/* settings */
.sets-panel { width: min(560px, 92vw); display: flex; flex-direction: column; gap: 10px; }
.set-row {
  display: flex; justify-content: space-between; align-items: center; gap: 14px;
  background: rgba(12, 16, 36, 0.8); border: 1px solid var(--stroke); border-radius: 12px; padding: 10px 14px;
}
.set-label { font-weight: 600; font-size: 1rem; }
.set-sub { display: block; font-size: .76rem; color: var(--muted); font-weight: 500; }
.seg { display: flex; border: 1px solid var(--stroke); border-radius: 9px; overflow: hidden; }
.seg button {
  font-family: var(--font-body); font-weight: 700; letter-spacing: .1em; font-size: .8rem;
  color: var(--muted); background: transparent; border: none; padding: 8px 14px; cursor: pointer;
  transition: background .15s, color .15s;
}
.seg button.sel { background: rgba(98, 240, 216, 0.16); color: var(--cyan); }
.seg button:focus-visible { outline: 2px solid var(--cyan); outline-offset: -2px; }

/* leaderboard */
.board-panel { width: min(620px, 94vw); background: rgba(12, 16, 36, 0.82); border: 1px solid var(--stroke); border-radius: 14px; padding: 12px 14px; }
.board-head, .board-row {
  display: grid; grid-template-columns: 2.2em 1fr 5.6em 3.6em 6.4em; gap: 6px; align-items: center;
  padding: 7px 8px; font-size: .92rem;
}
.board-head { color: var(--muted); font-size: .68rem; letter-spacing: .2em; font-weight: 700; border-bottom: 1px solid var(--stroke); }
.board-row { border-bottom: 1px solid rgba(140, 170, 255, 0.07); font-weight: 600; }
.board-row:last-child { border-bottom: none; }
.board-row .br-score { font-family: var(--font-display); font-weight: 700; color: var(--gold); font-size: .95rem; }
.board-row .br-mode { color: var(--cyan); font-size: .74rem; letter-spacing: .12em; font-weight: 700; }
.board-row .br-acc { color: var(--muted); font-size: .84rem; }
.board-row .br-date { color: var(--muted); font-size: .76rem; }
.board-empty { padding: 22px 8px; text-align: center; color: var(--muted); font-weight: 500; }

/* awards */
.awards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 10px; width: min(820px, 94vw); }
.award {
  display: flex; gap: 10px; align-items: center;
  background: rgba(12, 16, 36, 0.8); border: 1px solid var(--stroke); border-radius: 12px; padding: 10px 12px;
}
.award.locked { opacity: .42; }
.award.unlocked { border-color: rgba(255, 200, 87, 0.4); }
.award-icon { font-size: 1.5rem; width: 40px; text-align: center; filter: saturate(.2) brightness(1.4); }
.award.unlocked .award-icon { filter: none; }
.award-name { font-family: var(--font-display); font-weight: 700; font-size: .78rem; letter-spacing: .1em; }
.award.unlocked .award-name { color: var(--gold); }
.award-desc { font-size: .8rem; color: var(--muted); font-weight: 500; }

/* help */
.help-panel { width: min(720px, 94vw); background: rgba(12, 16, 36, 0.85); border: 1px solid var(--stroke); border-radius: 14px; padding: 16px 20px; }
.help-cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 16px; }
.help-col h3 { font-family: var(--font-display); font-size: .82rem; letter-spacing: .24em; color: var(--cyan); margin-bottom: 6px; }
.help-col p { color: var(--muted); font-weight: 500; font-size: .95rem; margin-bottom: 6px; }
.help-col b { color: var(--ink); }
.help-note { margin-top: 12px; color: var(--violet); font-size: .85rem; font-weight: 600; border-top: 1px solid var(--stroke); padding-top: 10px; }

/* results */
.screen-results { justify-content: flex-start; gap: 12px; }
.results-head { text-align: center; }
.results-verdict { font-family: var(--font-display); font-weight: 900; letter-spacing: .3em; font-size: clamp(1.1rem, 4vw, 1.7rem); color: var(--red); text-shadow: 0 0 30px rgba(255,77,94,.4); }
.results-verdict.win { color: var(--gold); text-shadow: 0 0 30px rgba(255,200,87,.5); }
.results-score-label { margin-top: 10px; font-size: .68rem; letter-spacing: .3em; color: var(--muted); font-weight: 700; }
.results-score { font-family: var(--font-display); font-weight: 900; font-size: clamp(2.6rem, 9vw, 4.4rem); line-height: 1; color: var(--ink); text-shadow: 0 0 40px rgba(98,240,216,.4); }
.results-newpb {
  display: inline-block; margin-top: 6px; padding: 4px 16px; border-radius: 999px;
  border: 1px solid var(--gold); color: var(--gold); font-weight: 700; letter-spacing: .24em; font-size: .72rem;
  animation: pb-pulse 1.2s infinite alternate;
}
@keyframes pb-pulse { from { box-shadow: 0 0 8px rgba(255,200,87,.25); } to { box-shadow: 0 0 24px rgba(255,200,87,.55); } }
.results-stats { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; max-width: 720px; }
.stat-chip {
  background: rgba(12,16,36,.85); border: 1px solid var(--stroke); border-radius: 10px;
  padding: 8px 14px; text-align: center; min-width: 88px;
}
.stat-chip .sc-v { font-family: var(--font-display); font-weight: 700; font-size: 1.06rem; color: var(--cyan); }
.stat-chip .sc-l { font-size: .6rem; letter-spacing: .22em; color: var(--muted); font-weight: 700; margin-top: 2px; }
.results-missed { width: min(760px, 94vw); background: rgba(12,16,36,.8); border: 1px solid var(--stroke); border-radius: 14px; padding: 12px 14px; max-height: 34vh; overflow-y: auto; }
.missed-row { padding: 8px 6px; border-bottom: 1px solid rgba(140,170,255,.08); }
.missed-row:last-child { border-bottom: none; }
.missed-q { font-weight: 600; font-size: .95rem; margin-bottom: 2px; }
.missed-a { font-size: .86rem; color: var(--green); font-weight: 600; }
.missed-e { font-size: .84rem; color: var(--muted); font-weight: 500; }
.missed-none { color: var(--muted); font-weight: 600; padding: 8px; text-align: center; }

/* ---------- overlays ---------- */
.overlay-screen {
  position: absolute; inset: 0; z-index: 9; display: flex; align-items: center; justify-content: center;
  background: rgba(4, 6, 15, 0.72); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.overlay-screen[hidden] { display: none; }
.pause-box { display: flex; flex-direction: column; gap: 10px; align-items: stretch; min-width: min(320px, 84vw); }

.explain-card {
  position: absolute; z-index: 7; left: 50%; bottom: calc(18px + var(--safe-b));
  transform: translateX(-50%);
  width: min(640px, calc(100vw - 24px));
  background: linear-gradient(180deg, rgba(12, 16, 36, 0.94), rgba(8, 11, 26, 0.94));
  border: 1px solid var(--stroke); border-radius: 14px; padding: 14px 18px;
  text-align: center; backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 18px 50px rgba(0,0,0,.6);
  animation: explain-in .3s cubic-bezier(.2,.8,.3,1.1);
}
@keyframes explain-in { from { opacity: 0; transform: translate(-50%, 24px); } to { opacity: 1; transform: translate(-50%, 0); } }
.explain-verdict { font-family: var(--font-display); font-weight: 900; letter-spacing: .3em; font-size: 1.06rem; margin-bottom: 6px; }
.explain-verdict.good { color: var(--green); text-shadow: 0 0 18px rgba(125,255,168,.4); }
.explain-verdict.bad { color: var(--red); text-shadow: 0 0 18px rgba(255,77,94,.4); }
.explain-body { font-size: .98rem; color: var(--ink); font-weight: 500; margin-bottom: 12px; }
.explain-body .ex-ans { color: var(--green); font-weight: 700; }
.explain-body .ex-was { color: #ff9aa5; font-weight: 700; }

/* banners */
#zone-banner, #stage-banner {
  position: absolute; z-index: 8; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 6px; pointer-events: none;
  background: radial-gradient(ellipse at center, rgba(5, 7, 18, 0.6), rgba(4, 5, 13, 0.85));
  animation: banner-in 2.6s cubic-bezier(.2,.7,.3,1) forwards;
}
#zone-banner[hidden], #stage-banner[hidden] { display: none; }
@keyframes banner-in { 0% { opacity: 0; } 12% { opacity: 1; } 82% { opacity: 1; } 100% { opacity: 0; } }
.zb-eyebrow { font-size: .74rem; letter-spacing: .5em; color: var(--muted); font-weight: 700; }
.zb-name { font-family: var(--font-display); font-weight: 900; font-size: clamp(1.8rem, 7vw, 3.4rem); letter-spacing: .12em; color: var(--ink); text-shadow: 0 0 44px rgba(98,240,216,.5); }
.zb-sub { font-size: .82rem; letter-spacing: .3em; color: var(--cyan); font-weight: 600; }

/* toasts */
#toasts { position: absolute; z-index: 10; top: calc(14px + var(--safe-t)); right: 14px; display: flex; flex-direction: column; gap: 8px; pointer-events: none; }
.toast {
  display: flex; gap: 10px; align-items: center; min-width: 220px; max-width: 300px;
  background: rgba(12, 16, 36, 0.92); border: 1px solid rgba(255, 200, 87, 0.5); border-radius: 12px;
  padding: 10px 14px; animation: toast-in .35s cubic-bezier(.2,.8,.3,1.2), toast-out .4s ease-in 3.2s forwards;
}
.toast .t-ico { font-size: 1.3rem; }
.toast .t-name { font-family: var(--font-display); font-weight: 700; font-size: .74rem; letter-spacing: .12em; color: var(--gold); }
.toast .t-desc { font-size: .78rem; color: var(--muted); font-weight: 600; }
@keyframes toast-in { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: none; } }
@keyframes toast-out { to { opacity: 0; transform: translateY(-10px); } }

/* tutorial */
#tut-hint {
  position: absolute; z-index: 9; left: 50%; bottom: calc(150px + var(--safe-b)); transform: translateX(-50%);
  width: min(520px, calc(100vw - 30px)); text-align: center; pointer-events: none;
  background: rgba(10, 14, 30, 0.9); border: 1px solid rgba(139, 123, 255, 0.5); border-radius: 12px;
  padding: 10px 16px;
}
.tut-step { font-family: var(--font-display); font-size: .66rem; letter-spacing: .3em; color: var(--violet); font-weight: 700; margin-bottom: 4px; }
.tut-text { font-size: .98rem; font-weight: 600; color: var(--ink); }
.tut-text b { color: var(--cyan); }

/* boot */
#boot { background: var(--bg0); z-index: 20; }
#boot[hidden] { display: none; }
.boot-box { text-align: center; display: flex; flex-direction: column; align-items: center; gap: 18px; }
.boot-logo { font-family: var(--font-display); font-weight: 900; font-size: clamp(1.8rem, 7vw, 3rem); color: var(--ink); letter-spacing: .06em; }
.boot-logo span { color: var(--cyan); }
.boot-bar { width: min(300px, 60vw); height: 4px; background: rgba(120,140,190,.2); border-radius: 3px; overflow: hidden; }
#boot-fill { height: 100%; width: 0%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); transition: width .4s; }
.boot-note { color: var(--muted); font-size: .8rem; letter-spacing: .2em; font-weight: 600; }
.fail-note { color: var(--muted); max-width: 400px; text-align: center; font-weight: 500; }

/* ---------- responsive ---------- */
@media (max-width: 760px) {
  .orb-label { max-width: min(170px, 38vw); }
  .hud-top { top: calc(6px + var(--safe-t)); }
  .score-block { min-width: 92px; }
  .hud-bottom { left: 8px; right: 8px; flex-wrap: wrap; gap: 6px; }
  .lives { order: 1; }
  .lifelines { order: 3; width: 100%; justify-content: center; }
  .lifeline { min-width: 0; flex: 1; max-width: 120px; padding: 4px 6px 4px; }
  .energy-wrap { order: 2; margin-left: auto; min-width: 100px; }
  .question-panel { top: calc(148px + var(--safe-t)); padding: 9px 12px 11px; }
  .timer-wrap, .timer-ring { width: 54px; height: 54px; }
  .timer-num { font-size: 1rem; }
  .combo-chip { top: calc(206px + var(--safe-t)); padding: 3px 12px 5px; }
  #tut-hint { bottom: calc(170px + var(--safe-b)); }
  .explain-card { bottom: calc(10px + var(--safe-b)); }
  .board-head, .board-row { grid-template-columns: 1.8em 1fr 4.4em 3em; }
  .br-date { display: none; }
}
@media (max-width: 420px) {
  .hud-center { display: none; }
  .question-panel { top: calc(66px + var(--safe-t)); }
}
@media (max-height: 480px) {
  .question-panel { top: calc(58px + var(--safe-t)); }
  .q-text { font-size: .95rem; }
  .combo-chip { top: calc(148px + var(--safe-t)); }
}

/* ---------- reduced motion ---------- */
body.reduce-motion * { animation-duration: .001s !important; transition-duration: .05s !important; }
body.reduce-motion .floater.rise { animation: floater-rise-fade .4s linear forwards; }
@keyframes floater-rise-fade { from { opacity: 1; } to { opacity: 0; } }
body.reduce-motion #vignette::after { display: none; }

@media (prefers-reduced-motion: reduce) {
  .screen.active, .explain-card, .toast { animation: none; }
}