:root {
    color-scheme: dark;
    --bg: #060711;
    --panel: rgba(15, 18, 32, 0.64);
    --panel-strong: rgba(15, 18, 32, 0.82);
    --line: rgba(255, 255, 255, 0.14);
    --line-strong: rgba(255, 255, 255, 0.22);
    --text: #f6f8ff;
    --muted: rgba(236, 242, 255, 0.72);
    --cyan: #64e8ff;
    --pink: #ff4fd8;
    --green: #99ffb3;
    --warning: #ffcc6a;
    --danger: #ff647c;
    --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 14px;
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* {
    box-sizing: border-box;
}

html,
body {
    width: 100%;
    min-height: 100%;
    margin: 0;
    overflow: hidden;
    overscroll-behavior: none;
    -webkit-user-select: none;
    user-select: none;
    background: radial-gradient(circle at 20% 0%, rgba(100, 232, 255, 0.18), transparent 30%),
        radial-gradient(circle at 85% 15%, rgba(255, 79, 216, 0.14), transparent 28%),
        var(--bg);
    color: var(--text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input {
    font: inherit;
}

button {
    -webkit-tap-highlight-color: transparent;
}

.game-shell {
    position: relative;
    width: 100vw;
    height: 100dvh;
    min-height: 560px;
    overflow: hidden;
    isolation: isolate;
}

#game-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
    touch-action: none;
    background: #060711;
}

.screen-vignette {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    background: linear-gradient(180deg, rgba(5, 6, 14, 0.34), transparent 35%, rgba(5, 6, 14, 0.48)),
        radial-gradient(circle at center, transparent 50%, rgba(0, 0, 0, 0.4));
}

.hud {
    position: absolute;
    z-index: 3;
    pointer-events: none;
}

.hud-top {
    top: calc(var(--site-nav-height, 0px) + 26px + var(--safe-top));
    left: clamp(12px, 2.2vw, 32px);
    right: clamp(12px, 2.2vw, 32px);
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
}

.hud-bottom {
    left: clamp(12px, 2.2vw, 32px);
    right: clamp(12px, 2.2vw, 32px);
    bottom: calc(18px + var(--safe-bottom));
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 14px;
}

.glass-card {
    pointer-events: auto;
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.04)), var(--panel);
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px) saturate(1.2);
    -webkit-backdrop-filter: blur(18px) saturate(1.2);
}

.brand-card {
    width: min(420px, 46vw);
    padding: 18px 20px;
}

.eyebrow {
    margin: 0 0 6px;
    color: var(--cyan);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

h1,
h2,
p {
    margin-top: 0;
}

h1 {
    margin-bottom: 6px;
    font-size: clamp(1.25rem, 2.5vw, 2rem);
    line-height: 1;
    letter-spacing: -0.05em;
}

h2 {
    margin-bottom: 14px;
    font-size: clamp(2rem, 5vw, 4.7rem);
    line-height: 0.92;
    letter-spacing: -0.075em;
}

.mini-copy,
.start-card p {
    color: var(--muted);
}

.mini-copy {
    margin: 0;
    font-size: 0.88rem;
}

.stat-card {
    min-width: min(500px, 52vw);
    padding: 16px;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(72px, 1fr));
    gap: 10px;
}

.stat-grid>div {
    min-width: 0;
    padding: 10px 12px;
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.055);
}

.stat-label {
    display: block;
    margin-bottom: 4px;
    color: var(--muted);
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.stat-grid strong {
    display: block;
    overflow: hidden;
    color: var(--text);
    font-size: clamp(1.05rem, 2.2vw, 1.8rem);
    line-height: 1;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.stat-grid small {
    color: var(--muted);
    font-size: 0.75rem;
    font-weight: 700;
}

.track-card {
    display: grid;
    gap: 5px;
    max-width: min(620px, 58vw);
    padding: 14px 16px;
    color: var(--muted);
    font-size: 0.86rem;
}

.track-card strong {
    color: var(--text);
}

.button-row {
    pointer-events: auto;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.ui-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 18px;
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    color: var(--text);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 14px 36px rgba(0, 0, 0, 0.28);
    cursor: pointer;
    transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.ui-button:hover,
.ui-button:focus-visible {
    transform: translateY(-1px);
    border-color: rgba(100, 232, 255, 0.72);
    background: rgba(255, 255, 255, 0.16);
    box-shadow: 0 16px 44px rgba(0, 0, 0, 0.36), 0 0 28px rgba(100, 232, 255, 0.16);
    outline: none;
}

.ui-button:active {
    transform: translateY(1px) scale(0.99);
}

.ui-button.primary {
    width: 100%;
    min-height: 58px;
    margin-top: 16px;
    border: 0;
    color: #061018;
    background: linear-gradient(135deg, var(--cyan), var(--green));
    font-weight: 900;
    box-shadow: 0 18px 52px rgba(100, 232, 255, 0.24);
}

.ui-button.secondary {
    background: rgba(13, 16, 28, 0.68);
}

.start-overlay {
    position: absolute;
    inset: 0;
    z-index: 8;
    display: grid;
    place-items: center;
    padding: calc(var(--site-nav-height, 0px) + 22px + var(--safe-top)) 18px max(18px, var(--safe-bottom));
    background: radial-gradient(circle at 50% 25%, rgba(100, 232, 255, 0.14), transparent 34%),
        rgba(3, 4, 10, 0.64);
    transition: opacity 240ms ease, visibility 240ms ease;
}

.start-overlay.is-hidden {
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
}

.start-card {
    width: min(760px, 100%);
    max-height: calc(100dvh - 36px);
    overflow: auto;
    padding: clamp(22px, 4vw, 46px);
}

.seed-label {
    display: grid;
    gap: 8px;
    margin-top: 22px;
    color: var(--muted);
    font-weight: 800;
    letter-spacing: 0.02em;
}

.seed-label input {
    width: 100%;
    min-height: 52px;
    border: 1px solid var(--line-strong);
    border-radius: 18px;
    padding: 0 16px;
    color: var(--text);
    background: rgba(255, 255, 255, 0.08);
    outline: none;
}

.seed-label input:focus {
    border-color: rgba(100, 232, 255, 0.82);
    box-shadow: 0 0 0 4px rgba(100, 232, 255, 0.14);
}

.controls-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
    margin-top: 18px;
    color: var(--muted);
    font-size: 0.82rem;
}

.controls-grid span {
    padding: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.055);
}

kbd {
    display: inline-grid;
    place-items: center;
    min-width: 24px;
    height: 24px;
    margin-right: 4px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 7px;
    color: var(--text);
    background: rgba(255, 255, 255, 0.12);
    font-size: 0.75rem;
    font-weight: 900;
}

.mobile-controls {
    position: absolute;
    z-index: 4;
    left: clamp(12px, 3vw, 28px);
    right: clamp(12px, 3vw, 28px);
    bottom: calc(130px + var(--safe-bottom));
    display: none;
    justify-content: space-between;
    gap: 20px;
    pointer-events: none;
}

.mobile-steer,
.mobile-pedals {
    pointer-events: auto;
    display: flex;
    gap: 10px;
}

.touch-button {
    width: clamp(66px, 18vw, 92px);
    height: clamp(66px, 18vw, 92px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 22px;
    color: var(--text);
    background: rgba(10, 12, 22, 0.7);
    box-shadow: 0 16px 46px rgba(0, 0, 0, 0.32);
    backdrop-filter: blur(14px);
    cursor: pointer;
    user-select: none;
}

.touch-button.throttle {
    color: #04100a;
    background: linear-gradient(135deg, var(--green), var(--cyan));
    font-weight: 1000;
}

.touch-button.brake {
    background: rgba(255, 100, 124, 0.28);
}

.touch-button.is-active {
    transform: scale(0.96);
    box-shadow: 0 0 30px rgba(100, 232, 255, 0.28);
}

.toast {
    position: absolute;
    z-index: 9;
    left: 50%;
    top: calc(var(--site-nav-height, 0px) + 122px + var(--safe-top));
    max-width: min(520px, calc(100vw - 28px));
    padding: 12px 16px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--text);
    background: var(--panel-strong);
    box-shadow: var(--shadow);
    opacity: 0;
    transform: translate(-50%, -8px);
    pointer-events: none;
    transition: opacity 180ms ease, transform 180ms ease;
    backdrop-filter: blur(16px);
}

.toast.is-visible {
    opacity: 1;
    transform: translate(-50%, 0);
}

.toast.is-error {
    border-color: rgba(255, 100, 124, 0.45);
    color: #fff1f4;
    background: rgba(80, 10, 22, 0.86);
}

.noscript-message {
    position: fixed;
    z-index: 20;
    inset: 20px;
    display: grid;
    place-items: center;
    border-radius: 20px;
    background: #111115;
    color: white;
}

@media (max-width: 900px) {
    .hud-top {
        align-items: stretch;
    }

    .brand-card {
        width: min(360px, 44vw);
    }

    .stat-card {
        min-width: 0;
        width: 52vw;
    }

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

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

@media (max-width: 760px), (pointer: coarse) {
    .game-shell {
        min-height: 100dvh;
    }

    .hud-top {
        top: calc(var(--site-nav-height, 0px) + 14px + var(--safe-top));
        display: grid;
        grid-template-columns: 1fr;
    }

    .brand-card,
    .stat-card {
        width: 100%;
        min-width: 0;
    }

    .brand-card {
        padding: 14px 16px;
    }

    .brand-card h1 {
        font-size: 1.25rem;
    }

    .mini-copy {
        display: none;
    }

    .stat-card {
        padding: 10px;
    }

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

    .stat-grid>div {
        padding: 8px;
        border-radius: 14px;
    }

    .stat-label {
        font-size: 0.58rem;
    }

    .stat-grid strong {
        font-size: 1rem;
    }

    .hud-bottom {
        display: none;
    }

    .mobile-controls {
        display: flex;
    }

    .toast {
        top: auto;
        bottom: calc(210px + var(--safe-bottom));
        font-size: 0.86rem;
    }

    .start-card {
        border-radius: 24px;
    }
}

@media (max-width: 460px) {
    .hud-top {
        left: 8px;
        right: 8px;
        gap: 8px;
    }

    .brand-card {
        display: none;
    }

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

    .start-overlay {
        padding: 10px;
        align-items: end;
    }

    .start-card {
        width: 100%;
        padding: 20px;
    }

    h2 {
        font-size: clamp(2rem, 12vw, 3.2rem);
    }

    .controls-grid {
        grid-template-columns: 1fr;
    }

    .mobile-controls {
        left: 8px;
        right: 8px;
        bottom: calc(45px + var(--safe-bottom));
    }

    .mobile-steer,
    .mobile-pedals {
        gap: 8px;
    }

    .touch-button {
        border-radius: 18px;
    }
}

@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}