/* Gravity Drift - bright "sky glass" UI floating over the live 3D scene. Sizes are in rem; js/game.js sets the root size. */
@font-face { font-family: "Righteous"; src: url(../assets/fonts/righteous-latin-400-normal.woff2) format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Outfit"; src: url(../assets/fonts/outfit-latin-600-normal.woff2) format("woff2"); font-weight: 400 600; font-display: swap; }
@font-face { font-family: "Outfit"; src: url(../assets/fonts/outfit-latin-700-normal.woff2) format("woff2"); font-weight: 700 900; font-display: swap; }
:root {
    --ink: #2a2468; --soft: #6a64a8; --paper: rgba(255,255,255,.92);
    --coral: #ff5d73; --orange: #ff9f1c; --aqua: #20c9e8; --violet: #7a52f5; --lime: #8be04e;
    --display: "Righteous", "Trebuchet MS", sans-serif; --ui: "Outfit", "Segoe UI", system-ui, sans-serif;
    --safe-t: env(safe-area-inset-top, 0px); --safe-b: env(safe-area-inset-bottom, 0px);
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; height: 100%; overflow: hidden; overscroll-behavior: none; font-size: 16px; background: #ffd6ec; }
body { font-family: var(--ui); font-weight: 600; color: var(--ink); -webkit-user-select: none; user-select: none; -webkit-touch-callout: none; touch-action: manipulation; }
button { font: inherit; color: inherit; border: 0; background: none; cursor: pointer; padding: 0; }
img { display: block; -webkit-user-drag: none; }
#stage { position: fixed; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; }
#app { position: fixed; inset: 0; pointer-events: none; }
.screen { position: absolute; inset: 0; display: none; flex-direction: column; align-items: center; padding: var(--safe-t) 0 var(--safe-b); pointer-events: none; }
.screen.active { display: flex; animation: rise .45s cubic-bezier(.2,.9,.3,1) both; }
.screen button, .screen .world-card, .modal { pointer-events: auto; }
@keyframes rise { from { opacity: 0; transform: translateY(1.2rem); } to { opacity: 1; transform: none; } }

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .6rem; min-height: 3.3rem; padding: .5rem 1.5rem; border-radius: 999px; font-family: var(--display); font-size: 1.3rem; line-height: 1; color: #fff; letter-spacing: .03em;
    border: .2rem solid rgba(255,255,255,.95); box-shadow: 0 .45rem 1.1rem rgba(42,36,104,.28), inset 0 .15rem 0 rgba(255,255,255,.5); text-shadow: 0 .1rem .2rem rgba(42,36,104,.3); transition: transform .1s, filter .15s; }
.btn:active { transform: scale(.95); filter: brightness(1.05); }
.btn img { width: 1.55rem; height: 1.55rem; }
.btn small { display: block; font-family: var(--ui); font-weight: 700; font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; margin-top: .2rem; opacity: .95; }
.btn-main { background: linear-gradient(180deg, #ff8a7a, var(--coral) 55%, #f23a72); }
.btn-aqua { background: linear-gradient(180deg, #5fe3f5, var(--aqua)); }
.btn-violet { background: linear-gradient(180deg, #a387ff, var(--violet)); }
.btn-glass { background: rgba(255,255,255,.3); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); color: var(--ink); text-shadow: none; }
.btn-glass img { filter: invert(1) brightness(.18) sepia(1) hue-rotate(205deg) saturate(5); }
.btn-glassdark { background: rgba(42,36,104,.55); }
.btn.wide { width: 100%; }
.btn.round { width: 3.2rem; height: 3.2rem; padding: 0; min-height: 0; font-size: 2rem; }
.btn.round.arrow { padding-bottom: .3rem; }
.btn.round img { width: 1.5rem; height: 1.5rem; }
.chip { display: inline-flex; align-items: center; gap: .45rem; padding: .35rem 1rem .35rem .7rem; border-radius: 999px; background: var(--paper); box-shadow: 0 .3rem .9rem rgba(42,36,104,.22); font-weight: 800; font-size: 1.05rem; }
.chip img { width: 1.35rem; height: 1.35rem; }
.chip.small { font-size: .95rem; padding: .28rem .85rem .28rem .6rem; }

/* ---------- loader ---------- */
#loader { justify-content: center; gap: 1rem; background: linear-gradient(180deg, #ffd6f2, #ffb3d9 55%, #fff1c9); pointer-events: auto; }
.load-logo { width: 9rem; height: 9rem; animation: roll 1.4s ease-in-out infinite; }
.load-title { display: flex; flex-direction: column; align-items: center; font-family: var(--display); line-height: .95; text-align: center; }
.load-title span { font-size: 2.6rem; color: #fff; text-shadow: 0 .25rem 0 var(--coral); } .load-title b { font-weight: 400; font-size: 3.6rem; color: var(--coral); text-shadow: 0 .25rem 0 #fff; }
.load-bar { width: min(70vw, 16rem); height: 1rem; border-radius: 999px; background: rgba(255,255,255,.8); overflow: hidden; box-shadow: 0 .2rem .6rem rgba(42,36,104,.2); }
.load-bar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--coral), var(--orange)); transition: width .25s; }
@keyframes roll { 50% { transform: translateY(-.8rem) rotate(8deg); } }

/* ---------- menu (the 3D scene plays in the free area, the buttons sit on a glass panel) ---------- */
#menu { justify-content: flex-end; }
.m-wrap { width: 100%; height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: space-between; }
.m-top { margin-top: 2rem; text-align: center; display: flex; flex-direction: column; align-items: center; }
.title { margin: 0; display: flex; flex-direction: column; align-items: center; font-family: var(--display); font-weight: 400; line-height: .9; transform: rotate(-3deg); }
.title span { font-size: 3.6rem; color: #fff; letter-spacing: .06em; -webkit-text-stroke: .5rem var(--violet); paint-order: stroke fill; text-shadow: 0 .4rem 0 rgba(42,36,104,.35); }
.title b { font-weight: 400; font-size: 6.2rem; color: #fff; background: linear-gradient(180deg, #ffb35c, var(--coral)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; filter: drop-shadow(0 .4rem 0 #fff) drop-shadow(0 .6rem .4rem rgba(42,36,104,.35)); margin-top: -.5rem; }
.tagline { margin: 1.1rem 0 0; font-size: 1.15rem; font-weight: 800; color: #fff; letter-spacing: .04em; padding: .3rem 1.1rem; border-radius: 999px; background: rgba(42,36,104,.4); }
.m-bottom { display: flex; flex-direction: column; align-items: center; gap: .9rem; width: min(100%, 32rem); padding: 1.1rem 1.3rem calc(1.4rem + var(--safe-b)); border-radius: 2.2rem 2.2rem 0 0; background: rgba(255,255,255,.72); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); box-shadow: 0 -.5rem 2rem rgba(42,36,104,.22), inset 0 .2rem 0 rgba(255,255,255,.9); pointer-events: auto; }
#playBtn { width: 100%; min-height: 4.6rem; font-size: 2rem; gap: 1rem; } #playBtn img { width: 2rem; height: 2rem; } #playBtn span { text-align: left; }
.m-row { display: flex; gap: .8rem; width: 100%; justify-content: center; } .m-row .btn:first-child { flex: 1; }
.m-bottom .chip { box-shadow: 0 .2rem .6rem rgba(42,36,104,.18); background: #fff; }
.ver { position: absolute; top: calc(.5rem + var(--safe-t)); right: .9rem; font-size: .75rem; opacity: .7; color: #fff; text-shadow: 0 0 .3rem rgba(0,0,0,.4); }

/* ---------- levels ---------- */
#levels { justify-content: flex-start; gap: .9rem; padding-left: 1rem; padding-right: 1rem; pointer-events: auto; background: linear-gradient(180deg, var(--w1, #ffd6f2), var(--w2, #fff1c9)); transition: background .4s; }
.bar { width: min(100%, 34rem); display: flex; align-items: center; gap: .8rem; padding-top: .8rem; }
.bar h2 { flex: 1; margin: 0; font-family: var(--display); font-weight: 400; font-size: 1.7rem; text-align: center; color: var(--ink); }
.world-card { width: min(100%, 34rem); display: flex; align-items: center; gap: .8rem; padding: .9rem; border-radius: 1.8rem; background: rgba(255,255,255,.55); box-shadow: 0 .6rem 1.6rem rgba(42,36,104,.18), inset 0 0 0 .2rem rgba(255,255,255,.9); }
.world-info { flex: 1; text-align: center; }
.w-num { display: inline-block; padding: .12rem .9rem; border-radius: 999px; background: var(--acc, var(--coral)); color: #fff; font-size: .8rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.world-info h3 { margin: .35rem 0 0; font-family: var(--display); font-weight: 400; font-size: 2.1rem; line-height: 1; color: var(--ink); }
.world-info p { margin: .25rem 0 0; font-size: 1rem; color: var(--soft); font-weight: 700; }
.dots { display: flex; gap: .5rem; } .dots i { width: .7rem; height: .7rem; border-radius: 50%; background: rgba(255,255,255,.8); } .dots i.on { background: var(--acc, var(--coral)); transform: scale(1.35); }
.lv-grid { width: min(100%, 34rem); flex: 1; min-height: 0; display: grid; grid-template-columns: repeat(2, 1fr); grid-auto-rows: minmax(0, 6.6rem); gap: .9rem; padding-bottom: 1.2rem; align-content: center; }
.lv { border-radius: 1.5rem; background: #fff; box-shadow: 0 .45rem 1rem rgba(42,36,104,.2); display: flex; align-items: center; justify-content: center; gap: 1rem; font-family: var(--display); font-size: 2.3rem; color: var(--ink); transition: transform .1s; }
.lv:active:not(.locked) { transform: scale(.95); }
.lv .st { display: flex; gap: .1rem; } .lv .st img { width: 1.3rem; height: 1.3rem; }
.lv.done { background: linear-gradient(180deg, #fff, #fff4cf); }
.lv.next { background: linear-gradient(180deg, #ff8a7a, var(--coral)); color: #fff; text-shadow: 0 .1rem .2rem rgba(42,36,104,.3); animation: pulse 1.5s ease-in-out infinite; }
.lv.locked { background: rgba(255,255,255,.5); color: #aab; box-shadow: none; cursor: default; } .lv.locked img { width: 1.6rem; height: 1.6rem; filter: invert(.6) sepia(.3) hue-rotate(190deg); }
@keyframes pulse { 50% { transform: scale(1.05); } }

/* ---------- game HUD ---------- */
#game { justify-content: flex-start; padding-left: .9rem; padding-right: .9rem; }
.hud { width: min(100%, 40rem); display: flex; align-items: center; gap: .8rem; padding-top: .7rem; }
.hud-mid { flex: 1; min-width: 0; display: flex; flex-direction: column; align-items: center; gap: .35rem; }
.hud-mid span { font-family: var(--display); font-size: 1.3rem; color: #fff; text-shadow: 0 .12rem .4rem rgba(42,36,104,.6); }
.track-bar { position: relative; width: 100%; height: .85rem; border-radius: 999px; background: rgba(255,255,255,.55); box-shadow: inset 0 0 0 .15rem rgba(255,255,255,.9), 0 .2rem .6rem rgba(42,36,104,.2); }
.track-bar i { position: absolute; left: 0; top: 0; bottom: 0; width: 0; border-radius: 999px; background: linear-gradient(90deg, var(--orange), var(--coral)); }
.track-bar em { position: absolute; top: 50%; left: 0; width: 1.5rem; height: 1.5rem; margin: -.75rem 0 0 -.75rem; border-radius: 50%; background: radial-gradient(circle at 35% 30%, #fff, #ffd9e0 60%, #ff9aa8); box-shadow: 0 .15rem .4rem rgba(42,36,104,.45); }
.chip.gems b, .chip.gems span { font-variant-numeric: tabular-nums; }
.count { position: absolute; top: 38%; left: 0; right: 0; text-align: center; font-family: var(--display); font-size: 9rem; color: #fff; text-shadow: 0 .5rem 0 var(--coral), 0 .8rem 1.2rem rgba(42,36,104,.4); opacity: 0; transform: scale(.4); pointer-events: none; }
.count.pop { animation: countPop .8s ease-out both; } @keyframes countPop { 0% { opacity: 0; transform: scale(.4); } 25% { opacity: 1; transform: scale(1.1); } 80% { opacity: 1; transform: scale(1); } 100% { opacity: 0; transform: scale(1.3); } }
.toast { position: absolute; top: 24%; left: 50%; transform: translate(-50%, 0); padding: .5rem 1.3rem; border-radius: 999px; background: var(--paper); font-family: var(--display); font-size: 1.4rem; box-shadow: 0 .4rem 1rem rgba(42,36,104,.25); opacity: 0; pointer-events: none; white-space: nowrap; }
.toast.show { animation: toast 1.4s ease both; } @keyframes toast { 0% { opacity: 0; transform: translate(-50%, 1rem) scale(.8); } 15%, 75% { opacity: 1; transform: translate(-50%, 0) scale(1); } 100% { opacity: 0; transform: translate(-50%, -1rem); } }
.hint { position: absolute; bottom: calc(2rem + var(--safe-b)); left: 50%; transform: translateX(-50%); display: flex; gap: 1.6rem; padding: .7rem 1.3rem; border-radius: 1.4rem; background: var(--paper); box-shadow: 0 .4rem 1rem rgba(42,36,104,.25); opacity: 0; pointer-events: none; transition: opacity .4s; white-space: nowrap; font-weight: 800; }
.hint.show { opacity: 1; } .hint span { display: flex; align-items: center; gap: .5rem; } .hint img { width: 1.6rem; height: 1.6rem; filter: invert(1) brightness(.2) sepia(1) hue-rotate(205deg) saturate(5); }

/* ---------- modals ---------- */
.modal { position: fixed; inset: 0; z-index: 10; display: none; align-items: center; justify-content: center; padding: 1rem; background: rgba(42,36,104,.35); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); }
.modal.show { display: flex; animation: fade .2s both; } .modal.show .card { animation: pop .42s cubic-bezier(.2,1.3,.4,1) both; }
@keyframes fade { from { opacity: 0; } } @keyframes pop { from { transform: scale(.7) translateY(1rem); opacity: 0; } }
.card { width: min(24rem, 100%); max-height: calc(100% - 1rem); overflow: auto; display: flex; flex-direction: column; align-items: center; gap: .9rem; padding: 1.3rem 1.2rem; border-radius: 2rem; background: #fff; box-shadow: 0 1.2rem 3rem rgba(42,36,104,.4); text-align: center; }
.card h3 { margin: 0; font-family: var(--display); font-weight: 400; font-size: 2.1rem; line-height: 1.05; } .card p { margin: 0; font-size: 1rem; line-height: 1.4; color: var(--soft); font-weight: 700; }
.badge { padding: .28rem 1.1rem; border-radius: 999px; background: linear-gradient(90deg, var(--orange), var(--coral)); color: #fff; font-size: .85rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; } .badge.bad { background: var(--violet); }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: .7rem; width: 100%; } .row2 .btn { padding: .5rem .6rem; font-size: 1.15rem; }
.stars { display: flex; gap: .3rem; align-items: flex-end; } .stars img { width: 4rem; height: 4rem; } .stars img:nth-child(2) { margin-bottom: .8rem; }
.stars img.new { animation: starIn .6s cubic-bezier(.2,1.6,.4,1) both; } @keyframes starIn { from { transform: scale(0) rotate(-90deg); } }
.facts { display: flex; gap: .6rem; width: 100%; } .facts div { flex: 1; padding: .5rem .2rem; border-radius: 1rem; background: #f2f0ff; } .facts small { display: block; font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; color: var(--soft); font-weight: 800; } .facts b { font-family: var(--display); font-weight: 400; font-size: 1.5rem; }
.how { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: .7rem; text-align: left; } .how li { display: flex; gap: .8rem; align-items: center; font-size: 1rem; line-height: 1.3; font-weight: 600; } .how b { font-weight: 800; }
.how .n { flex: none; width: 2.2rem; height: 2.2rem; border-radius: 50%; display: grid; place-items: center; font-style: normal; font-family: var(--display); font-size: 1.2rem; color: #fff; background: var(--coral); }
.how li:nth-child(2) .n { background: var(--aqua); } .how li:nth-child(3) .n { background: var(--orange); } .how li:nth-child(4) .n { background: var(--violet); }
.set-row { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1rem; font-size: 1.2rem; text-align: left; font-weight: 700; } .set-row small { display: block; font-size: .8rem; color: var(--soft); font-weight: 600; }
.switch { flex: none; width: 3.6rem; height: 2rem; border-radius: 999px; background: #d8d6ee; position: relative; transition: background .15s; } .switch i { position: absolute; top: .2rem; left: .2rem; width: 1.6rem; height: 1.6rem; border-radius: 50%; background: #fff; box-shadow: 0 .1rem .3rem rgba(0,0,0,.25); transition: transform .15s; }
.switch.on { background: var(--aqua); } .switch.on i { transform: translateX(1.6rem); }
.confetti { position: fixed; inset: 0; pointer-events: none; z-index: 11; overflow: hidden; } .confetti i { position: absolute; top: -1rem; width: .7rem; height: 1.1rem; border-radius: .15rem; animation: fall linear forwards; } @keyframes fall { to { transform: translateY(110vh) rotate(720deg); } }

/* ---------- landscape / short screens ---------- */
@media (orientation: landscape) and (min-aspect-ratio: 5/4) {
    #menu { align-items: flex-start; justify-content: center; padding-left: 4vw; }
    .m-wrap { width: min(25rem, 44vw); height: auto; max-height: calc(100% - 1.6rem); justify-content: center; gap: 1.1rem; padding: 1.4rem 1.3rem; border-radius: 2.2rem; background: rgba(255,255,255,.72); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); box-shadow: 0 1rem 2.6rem rgba(42,36,104,.3), inset 0 .2rem 0 rgba(255,255,255,.9); pointer-events: auto; }
    .m-top { margin: 0; } .title b { font-size: 5rem; filter: drop-shadow(0 .3rem 0 var(--violet)) drop-shadow(0 .5rem .3rem rgba(42,36,104,.3)); } .title span { font-size: 2.8rem; }
    .m-bottom { width: 100%; padding: 0; background: none; backdrop-filter: none; -webkit-backdrop-filter: none; box-shadow: none; border-radius: 0; }
    .lv-grid { grid-template-columns: repeat(4, 1fr); grid-auto-rows: minmax(0, 6rem); max-width: 60rem; } .bar, .world-card { max-width: 60rem; }
}
@media (max-height: 500px) { .title b { font-size: 4rem !important; } .title span { font-size: 2.2rem !important; } .tagline { margin-top: .5rem; font-size: 1rem; } .btn { min-height: 2.8rem; } #playBtn { min-height: 3.6rem; font-size: 1.6rem; } .lv { font-size: 1.4rem; } .lv .st img { width: 1rem; height: 1rem; } .world-card { padding: .4rem .8rem; } .card { padding: .9rem 1rem; gap: .6rem; } .stars img { width: 3rem; height: 3rem; } .count { font-size: 6rem; } .how { gap: .4rem; } }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }