:root {
    --ink: #f8f4ec;
    --muted: #8d93a0;
    --track: #17181c;
    --track-deep: #101115;
    --coral: #f9a28e;
    --teal: #32d6c8;
    --yellow: #f5cf55;
    --green: #65d46e;
    --red: #ff5a4f;
    --ground: 72px;
}

html {
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

*,
*:before,
*:after {
    box-sizing: inherit;
}

body {
    min-height: 100vh;
    min-height: 100svh;
    margin: 0;
    overflow: hidden;
    color: var(--ink);
    background:
        radial-gradient(circle at 18% 16%, rgba(50, 214, 200, 0.18), transparent 24rem),
        radial-gradient(circle at 82% 22%, rgba(249, 162, 142, 0.2), transparent 22rem),
        linear-gradient(150deg, #101116 0%, #222025 42%, #15171d 100%);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

button {
    font: inherit;
}

.game {
    position: relative;
    min-height: 100vh;
    min-height: 100svh;
    display: grid;
    grid-template-rows: auto 1fr auto;
    place-items: center;
    padding: 28px clamp(16px, 4vw, 48px) 24px;
    isolation: isolate;
}

.hud {
    z-index: 5;
    width: min(940px, 100%);
    display: grid;
    grid-template-columns: minmax(132px, 1fr) minmax(132px, 1fr) minmax(92px, 0.55fr) minmax(92px, 0.55fr);
    gap: 10px;
}

.meter {
    min-height: 64px;
    padding: 12px 14px;
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 8px;
    background: rgba(10, 11, 15, 0.48);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 18px 44px rgba(0, 0, 0, 0.18);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
}

.meter span {
    display: block;
    color: var(--muted);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
}

.meter strong {
    display: block;
    margin-top: 2px;
    color: var(--ink);
    font-size: clamp(22px, 4vw, 38px);
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.meter.compact strong {
    color: var(--teal);
    font-size: clamp(20px, 3.4vw, 32px);
}

.track {
    position: relative;
    width: min(940px, 100%);
    height: clamp(360px, 61vh, 560px);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent 36%),
        linear-gradient(180deg, #242225 0%, #17181c 54%, #111216 100%);
    box-shadow: 0 26px 80px rgba(0, 0, 0, 0.34);
}

.game.is-crashed .track {
    animation: crash-shake 0.34s steps(4, end);
}

.city {
    position: absolute;
    inset: 0 0 var(--ground) 0;
    opacity: 0.42;
    pointer-events: none;
}

.city span {
    position: absolute;
    bottom: 0;
    width: 13%;
    min-width: 64px;
    background: linear-gradient(180deg, rgba(50, 214, 200, 0.13), rgba(255, 255, 255, 0.03));
    border-top: 2px solid rgba(50, 214, 200, 0.24);
}

.city span:nth-child(1) { left: -5%; height: 34%; }
.city span:nth-child(2) { left: 12%; height: 48%; }
.city span:nth-child(3) { left: 34%; height: 28%; }
.city span:nth-child(4) { left: 52%; height: 42%; }
.city span:nth-child(5) { left: 71%; height: 31%; }
.city span:nth-child(6) { left: 88%; height: 51%; }

.speed-field,
.road,
.world {
    position: absolute;
    inset: 0;
}

.speed-field {
    pointer-events: none;
    opacity: 0.72;
}

.speed-field i {
    position: absolute;
    right: -26%;
    width: clamp(140px, 28vw, 280px);
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.7), transparent);
    animation: speed-line 0.82s linear infinite;
}

.speed-field i:nth-child(1) { top: 17%; animation-delay: -0.1s; }
.speed-field i:nth-child(2) { top: 27%; animation-delay: -0.7s; width: 18vw; }
.speed-field i:nth-child(3) { top: 39%; animation-delay: -0.34s; }
.speed-field i:nth-child(4) { top: 49%; animation-delay: -0.57s; width: 20vw; }
.speed-field i:nth-child(5) { top: 63%; animation-delay: -0.2s; }
.speed-field i:nth-child(6) { top: 72%; animation-delay: -0.78s; width: 24vw; }
.speed-field i:nth-child(7) { top: 80%; animation-delay: -0.43s; }
.speed-field i:nth-child(8) { top: 88%; animation-delay: -0.62s; width: 16vw; }

.game.is-boosting .speed-field i {
    animation-duration: 0.46s;
    background: linear-gradient(90deg, transparent, rgba(50, 214, 200, 0.82), rgba(245, 207, 85, 0.6), transparent);
}

.road {
    top: auto;
    height: calc(var(--ground) + 28px);
    bottom: 0;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent 18px),
        repeating-linear-gradient(90deg, transparent 0 42px, rgba(255, 255, 255, 0.28) 42px 88px, transparent 88px 162px),
        linear-gradient(180deg, #36323a 0%, #17181c 62%);
    background-size: auto, 310px 100%, auto;
    animation: road-rush 0.48s linear infinite;
    box-shadow: 0 -12px 42px rgba(0, 0, 0, 0.22);
}

.game.is-boosting .road {
    animation-duration: 0.28s;
}

.world {
    z-index: 2;
    pointer-events: none;
}

.rider {
    --arm-front: 24deg;
    --arm-front-end: -48deg;
    --arm-back: 164deg;
    --arm-back-end: -50deg;
    --leg-front: 40deg;
    --leg-front-end: 30deg;
    --leg-back: 120deg;
    --leg-back-end: -36deg;
    --board-r: 0deg;
    --board-x: 0px;
    --body-r: 12deg;
    --body-y: -65%;
    --body-x: -85%;
    --skate-x: 0px;
    --skate-y: 0px;
    --color: var(--coral);
    --line-top-x: 0%;
    --line-bottom-x: 0%;
    z-index: 3;
    position: absolute;
    left: 0;
    bottom: var(--ground);
    width: 78px;
    height: 78px;
    will-change: transform;
}

.rider .skate {
    position: relative;
    width: 40px;
    height: 46px;
    transform: translate(var(--skate-x), var(--skate-y)) scale(1.45) translateZ(0);
    transform-origin: 50% 100%;
    filter: drop-shadow(0 16px 14px rgba(0, 0, 0, 0.32));
}

.rider .skate .body {
    background: var(--color);
    height: 15px;
    width: 7px;
    border-radius: 4px;
    transform-origin: 4px 11px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(var(--body-x), var(--body-y)) rotate(var(--body-r)) translateZ(0);
    transition: transform 0.12s ease-out;
}

.rider .skate .body:before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 4px;
    bottom: 16px;
    left: 0;
    position: absolute;
    background: var(--color);
    transform: translateY(-0.5px);
}

.rider .skate .body .arm,
.rider .skate .body .arm:before,
.rider .skate .body .leg,
.rider .skate .body .leg:before {
    content: '';
    width: var(--w, 11px);
    height: 4px;
    top: var(--t, 0);
    left: var(--l, 2px);
    border-radius: 2px;
    transform-origin: 2px 2px;
    position: absolute;
    background: var(--color);
    transform: rotate(var(--r, 0deg));
    transition: transform 0.12s ease-out;
}

.rider .skate .body .arm:before { --l: 8px; }
.rider .skate .body .arm.front { --r: var(--arm-front); }
.rider .skate .body .arm.front:before { --r: var(--arm-front-end); }
.rider .skate .body .arm.back { --r: var(--arm-back); }
.rider .skate .body .arm.back:before { --r: var(--arm-back-end); }
.rider .skate .body .leg { --w: 11px; --t: 11px; }
.rider .skate .body .leg:before { --t: 0; --l: 8px; }
.rider .skate .body .leg.front { --r: var(--leg-front); }
.rider .skate .body .leg.front:before { --r: var(--leg-front-end); }
.rider .skate .body .leg.back { --l: 1px; --r: var(--leg-back); }
.rider .skate .body .leg.back:before { --r: var(--leg-back-end); }

.rider .skate .board {
    position: absolute;
    left: 2px;
    bottom: -1px;
    transform: translateX(var(--board-x)) rotate(var(--board-r)) translateZ(0);
    transform-origin: 7px 5.5px;
    transition: transform 0.12s ease-out;
}

.rider .skate .board svg {
    display: block;
    width: 34px;
    height: 8px;
    fill: var(--color);
}

.rider .line {
    height: 3px;
    border-radius: 1px;
    overflow: hidden;
    position: absolute;
    right: 105%;
    top: 18px;
    width: 16px;
    transform: scaleY(0.75);
}

.rider .line:before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: var(--color);
    animation: rider-line 0.32s linear infinite;
}

.rider .line.bottom {
    width: 13px;
    top: 24px;
}

.rider.is-boosting {
    --skate-x: 12px;
    --arm-front: 24deg;
    --arm-front-end: -48deg;
    --arm-back: 164deg;
    --arm-back-end: -36deg;
    --leg-front: -4deg;
    --leg-front-end: 66deg;
    --leg-back: 111deg;
    --leg-back-end: -36deg;
    --body-r: 34deg;
    --body-y: -53%;
    --body-x: -28%;
}

.rider.is-braking {
    --skate-x: -12px;
    --arm-front: 32deg;
    --arm-front-end: 20deg;
    --arm-back: 156deg;
    --arm-back-end: -22deg;
    --leg-front: 19deg;
    --leg-front-end: 74deg;
    --leg-back: 134deg;
    --leg-back-end: -29deg;
    --board-r: -15deg;
    --body-r: -8deg;
    --body-y: -65%;
    --body-x: -110%;
}

.rider.is-airborne {
    --arm-front: 40deg;
    --arm-front-end: -12deg;
    --arm-back: 172deg;
    --arm-back-end: 38deg;
    --leg-front: -8deg;
    --leg-front-end: 102deg;
    --leg-back: 103deg;
    --leg-back-end: -16deg;
    --board-r: -28deg;
    --body-r: 7deg;
    --body-y: -90%;
    --body-x: -160%;
}

.rider.is-sliding {
    --arm-front: -26deg;
    --arm-front-end: -58deg;
    --arm-back: 204deg;
    --arm-back-end: 60deg;
    --leg-front: 40deg;
    --leg-front-end: 80deg;
    --leg-back: 150deg;
    --leg-back-end: -96deg;
    --body-r: 180deg;
    --body-y: -100%;
    --board-r: 4deg;
}

.rider.is-crashed {
    --board-x: 54px;
    --board-r: -18deg;
    --body-x: -85%;
    --body-y: 36%;
    --body-r: -26deg;
    --leg-back-end: 24deg;
    --leg-back: 20deg;
    --leg-front-end: 30deg;
    --leg-front: -10deg;
    --arm-back-end: -40deg;
    --arm-back: 164deg;
    --arm-front-end: -28deg;
    --arm-front: 24deg;
}

.obstacle,
.spark,
.score-pop {
    position: absolute;
    left: 0;
    will-change: transform;
}

.obstacle {
    z-index: 2;
    bottom: var(--ground);
    filter: drop-shadow(0 16px 14px rgba(0, 0, 0, 0.28));
}

.obstacle-cone {
    width: 38px;
    height: 42px;
}

.obstacle-cone:before {
    content: '';
    position: absolute;
    inset: 0 2px 0 2px;
    -webkit-clip-path: polygon(50% 0, 100% 100%, 0 100%);
    clip-path: polygon(50% 0, 100% 100%, 0 100%);
    background: linear-gradient(180deg, #ff8a46 0%, var(--red) 100%);
}

.obstacle-cone:after {
    content: '';
    position: absolute;
    left: 6px;
    right: 6px;
    bottom: 9px;
    height: 5px;
    background: rgba(255, 255, 255, 0.74);
    transform: skewX(-18deg);
}

.obstacle-barrier {
    width: 64px;
    height: 46px;
}

.obstacle-barrier:before,
.obstacle-barrier:after {
    content: '';
    position: absolute;
    background: var(--yellow);
}

.obstacle-barrier:before {
    left: 0;
    right: 0;
    top: 6px;
    height: 15px;
    border-radius: 4px;
    box-shadow: inset 18px 0 0 rgba(0, 0, 0, 0.17), inset 42px 0 0 rgba(0, 0, 0, 0.17);
}

.obstacle-barrier:after {
    left: 9px;
    right: 9px;
    bottom: 0;
    height: 31px;
    -webkit-clip-path: polygon(0 100%, 16% 100%, 35% 0, 52% 0, 32% 100%, 48% 100%, 69% 0, 86% 0, 66% 100%, 100% 100%, 100% 88%, 0 88%);
    clip-path: polygon(0 100%, 16% 100%, 35% 0, 52% 0, 32% 100%, 48% 100%, 69% 0, 86% 0, 66% 100%, 100% 100%, 100% 88%, 0 88%);
}

.obstacle-sign {
    width: 78px;
    height: 44px;
    bottom: calc(var(--ground) + 50px);
    border-radius: 7px;
    border: 2px solid rgba(255, 255, 255, 0.72);
    background: linear-gradient(135deg, var(--teal), #166d83);
    box-shadow: 0 0 24px rgba(50, 214, 200, 0.2);
}

.obstacle-sign:before {
    content: '';
    position: absolute;
    left: 14px;
    right: 14px;
    top: 12px;
    height: 5px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.72);
    box-shadow: 0 11px 0 rgba(255, 255, 255, 0.58);
}

.obstacle-rail {
    width: 82px;
    height: 30px;
}

.obstacle-rail:before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    top: 4px;
    height: 7px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--green), #e9f7a1);
    box-shadow: 0 0 18px rgba(101, 212, 110, 0.34);
}

.obstacle-rail:after {
    content: '';
    position: absolute;
    inset: 11px 10px 0;
    background: linear-gradient(90deg, transparent 0 10px, rgba(255, 255, 255, 0.46) 10px 15px, transparent 15px 36px, rgba(255, 255, 255, 0.46) 36px 41px, transparent 41px);
}

.spark {
    z-index: 2;
    bottom: calc(var(--ground) + 100px);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.7);
    background: radial-gradient(circle at 36% 30%, #fff 0 12%, var(--yellow) 13% 52%, #e78239 53% 100%);
    box-shadow: 0 0 26px rgba(245, 207, 85, 0.55);
    animation: spark-spin 0.54s linear infinite;
}

.spark.is-collected {
    animation: spark-collect 0.22s ease-out forwards;
}

.score-pop {
    z-index: 4;
    color: var(--yellow);
    font-size: 16px;
    font-weight: 900;
    text-shadow: 0 3px 14px rgba(0, 0, 0, 0.5);
    animation: score-pop 0.62s ease-out forwards;
    pointer-events: none;
}

.panel {
    z-index: 6;
    position: absolute;
    left: 50%;
    top: 50%;
    display: grid;
    justify-items: center;
    gap: 12px;
    min-width: min(360px, 86vw);
    padding: 28px;
    border: 1px solid rgba(255, 255, 255, 0.11);
    border-radius: 8px;
    background: rgba(12, 13, 18, 0.78);
    box-shadow: 0 26px 70px rgba(0, 0, 0, 0.38);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    transform: translate(-50%, -50%);
    transition: opacity 0.18s ease, visibility 0.18s ease, transform 0.18s ease;
}

.game.is-running .panel {
    visibility: hidden;
    opacity: 0;
    transform: translate(-50%, -48%);
    pointer-events: none;
}

.kicker {
    margin: 0;
    color: var(--teal);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0;
    text-transform: uppercase;
}

.panel h1 {
    margin: 0;
    color: var(--ink);
    font-size: clamp(38px, 9vw, 72px);
    line-height: 0.9;
    letter-spacing: 0;
}

.panel-stats {
    display: flex;
    gap: 16px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
}

.play-button {
    -webkit-appearance: none;
    appearance: none;
    display: grid;
    place-items: center;
    width: 58px;
    height: 58px;
    border: 0;
    border-radius: 50%;
    color: #15171d;
    background: linear-gradient(135deg, var(--yellow), var(--coral));
    box-shadow: 0 18px 34px rgba(249, 162, 142, 0.22);
    cursor: pointer;
    touch-action: manipulation;
    transition: transform 0.16s ease, filter 0.16s ease;
}

.play-button:hover,
.play-button:focus-visible {
    transform: translateY(-2px) scale(1.03);
    filter: brightness(1.05);
}

.play-button svg {
    width: 28px;
    height: 28px;
    fill: currentColor;
    transform: translateX(2px);
}

.controls {
    z-index: 5;
    display: grid;
    grid-gap: 8px;
    margin-top: 18px;
    user-select: none;
    touch-action: none;
}

.controls button {
    appearance: none;
    height: 42px;
    width: 46px;
    border-radius: 8px;
    background: rgba(44, 44, 49, 0.86);
    border: 1px solid rgba(255, 255, 255, 0.07);
    outline: none;
    display: flex;
    justify-content: center;
    align-items: center;
    transform: scale(var(--scale, 1)) translateZ(0);
    transition: transform 0.15s, background 0.15s, border-color 0.15s;
    cursor: pointer;
}

.controls button svg {
    display: block;
    width: 10px;
    height: 10px;
    fill: var(--color, #8f959e);
    transition: fill 0.15s;
}

.controls button.up { grid-row: 1; grid-column: 2; }
.controls button.left { grid-row: 2; grid-column: 1; }
.controls button.right { grid-row: 2; grid-column: 3; }
.controls button.down { grid-row: 2; grid-column: 2; }

.controls button.pressed {
    --scale: 0.94;
    --color: #fff;
    background: rgba(249, 162, 142, 0.34);
    border-color: rgba(249, 162, 142, 0.58);
}

.privacy-link {
    z-index: 7;
    position: fixed;
    right: max(12px, env(safe-area-inset-right));
    bottom: max(12px, env(safe-area-inset-bottom));
    padding: 6px 10px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    color: rgba(248, 244, 236, 0.72);
    background: rgba(10, 11, 15, 0.44);
    font-size: 12px;
    font-weight: 800;
    line-height: 1;
    text-decoration: none;
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
}

.privacy-link:hover,
.privacy-link:focus-visible {
    color: var(--ink);
    border-color: rgba(50, 214, 200, 0.38);
    outline: none;
}

@keyframes speed-line {
    from { transform: translateX(0); opacity: 0; }
    12% { opacity: 0.82; }
    to { transform: translateX(-132vw); opacity: 0; }
}

@keyframes road-rush {
    from { background-position: 0 0, 0 0, 0 0; }
    to { background-position: 0 0, -310px 0, 0 0; }
}

@keyframes rider-line {
    from { transform: translateX(160%); }
    to { transform: translateX(-160%); }
}

@keyframes spark-spin {
    to { transform: rotate(360deg); }
}

@keyframes spark-collect {
    to { transform: scale(1.9) rotate(160deg); opacity: 0; }
}

@keyframes score-pop {
    from { transform: translateY(0); opacity: 1; }
    to { transform: translateY(-34px); opacity: 0; }
}

@keyframes crash-shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-8px); }
    50% { transform: translateX(7px); }
    75% { transform: translateX(-4px); }
}

@media (max-width: 720px) {
    .game {
        padding: 14px 12px 14px;
        grid-template-rows: auto 1fr;
    }

    .hud {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .meter {
        min-height: 54px;
        padding: 10px 11px;
    }

    /* Track fills all remaining space */
    .track {
        align-self: stretch;
        height: auto;
        min-height: 0;
        width: 100%;
    }

    .panel {
        padding: 22px;
    }

    /* Controls overlay inside the game area */
    .controls {
        position: absolute;
        bottom: 16px;
        left: 50%;
        transform: translateX(-50%);
        margin: 0;
        z-index: 5;
    }

    .controls button {
        height: 58px;
        width: 62px;
        background: rgba(18, 18, 26, 0.52);
        border-color: rgba(255, 255, 255, 0.11);
    }

    .controls button svg {
        width: 13px;
        height: 13px;
    }

    .controls button.pressed {
        background: rgba(249, 162, 142, 0.42);
    }
}

@media (max-width: 480px) {
    .game {
        padding: 10px 10px 10px;
    }

    .hud {
        gap: 6px;
    }

    .meter {
        min-height: 48px;
        padding: 8px 10px;
    }

    .meter strong {
        font-size: clamp(17px, 5vw, 26px);
    }

    .meter.compact strong {
        font-size: clamp(15px, 4.5vw, 22px);
    }

    .controls {
        bottom: 12px;
        grid-gap: 6px;
    }
}

/* Touch landscape (phones + tablets): controls overlay inside track */
@media (pointer: coarse) and (orientation: landscape) {
    .game {
        grid-template-rows: auto 1fr;
    }

    .track {
        align-self: stretch;
        height: auto;
        min-height: 0;
        width: 100%;
    }

    .controls {
        position: absolute;
        bottom: 16px;
        left: 50%;
        transform: translateX(-50%);
        margin: 0;
        grid-column: unset;
        grid-row: unset;
        align-self: unset;
        justify-self: unset;
    }

    .controls button {
        background: rgba(18, 18, 26, 0.52);
        border-color: rgba(255, 255, 255, 0.11);
    }

    .controls button.pressed {
        background: rgba(249, 162, 142, 0.42);
    }
}

/* Phone landscape: additionally compact HUD and smaller controls */
@media (pointer: coarse) and (orientation: landscape) and (max-height: 500px) {
    .game {
        height: 100vh;
        height: 100svh;
        height: 100dvh;
        min-height: unset;
        padding: 6px 10px;
        padding-right: max(10px, env(safe-area-inset-right));
        padding-left: max(10px, env(safe-area-inset-left));
        gap: 6px 0;
    }

    .hud {
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 6px;
    }

    .meter {
        min-height: 36px;
        padding: 5px 10px;
    }

    .meter span {
        font-size: 9px;
    }

    .meter strong {
        font-size: clamp(13px, 3.2vh, 20px);
        margin-top: 0;
    }

    .meter.compact strong {
        font-size: clamp(11px, 2.8vh, 18px);
    }

    .controls {
        bottom: 12px;
    }

    .controls button {
        height: 50px;
        width: 52px;
    }

    .controls button svg {
        width: 13px;
        height: 13px;
    }

    .panel {
        padding: 14px 20px;
        gap: 8px;
        min-width: min(260px, 70vw);
    }

    .panel h1 {
        font-size: clamp(22px, 8vh, 48px);
    }

    .kicker {
        font-size: 10px;
    }

    .panel-stats {
        font-size: 11px;
    }

    .play-button {
        width: 44px;
        height: 44px;
    }

    .play-button svg {
        width: 20px;
        height: 20px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .speed-field i,
    .road,
    .rider .line:before,
    .spark {
        animation-duration: 2s;
    }
}