@font-face {
    font-family: "Fredoka One";
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url("../fonts/FredokaOne-Regular.woff2") format("woff2");
}

.kart-page,
.kart-page * {
    box-sizing: border-box;
}

.kart-page {
    --kart-navy: #071426;
    --kart-panel: #0c2038;
    --kart-cyan: #34e7f2;
    --kart-lime: #c8ff3d;
    --kart-white: #f5fbff;
    margin: 0;
    min-height: 100vh;
    color: var(--kart-white);
    background:
        radial-gradient(circle at 15% 8%, rgba(52, 231, 242, 0.16), transparent 30rem),
        radial-gradient(circle at 88% 0%, rgba(200, 255, 61, 0.11), transparent 26rem),
        var(--kart-navy);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    -webkit-font-smoothing: antialiased;
}

.kart-page button,
.kart-page a {
    font: inherit;
}

.kart-header {
    width: min(1440px, 100%);
    min-height: 76px;
    margin: 0 auto;
    padding: 12px clamp(16px, 3vw, 40px);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 20px;
}

.kart-home,
.kart-fullscreen {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 13px;
    color: var(--kart-white);
    text-decoration: none;
    transition-property: background-color, color, transform, box-shadow;
    transition-duration: 180ms;
}

.kart-home {
    justify-self: start;
    padding: 0 12px;
    color: #b8cadb;
}

.kart-home > span:first-child {
    color: var(--kart-cyan);
    font-size: 1.25rem;
}

.kart-home:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.07);
}

.kart-title-group {
    text-align: center;
}

.kart-kicker,
.kart-section-label {
    margin: 0;
    color: var(--kart-cyan);
    font-size: 0.7rem;
    font-weight: 850;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.kart-title-group h1 {
    margin: 1px 0 0;
    font-family: "Fredoka One", ui-rounded, sans-serif;
    font-size: clamp(1.35rem, 3vw, 2rem);
    font-weight: 400;
    letter-spacing: 0.04em;
    text-wrap: balance;
}

.kart-actions {
    justify-self: end;
    display: flex;
    align-items: center;
    gap: 10px;
}

.kart-badge {
    padding: 7px 11px;
    border-radius: 999px;
    color: #122008;
    background: var(--kart-lime);
    font-size: 0.78rem;
    font-weight: 850;
    box-shadow: 0 6px 20px rgba(200, 255, 61, 0.15);
}

.kart-fullscreen {
    min-width: 92px;
    padding: 0 14px;
    border: 0;
    color: var(--kart-white);
    background: #15324f;
    cursor: pointer;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1), 0 8px 22px rgba(0, 0, 0, 0.2);
}

.kart-fullscreen svg {
    width: 18px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.kart-fullscreen:hover {
    color: var(--kart-navy);
    background: var(--kart-cyan);
}

.kart-home:active,
.kart-fullscreen:active {
    transform: scale(0.96);
}

.kart-home:focus-visible,
.kart-fullscreen:focus-visible {
    outline: 3px solid var(--kart-lime);
    outline-offset: 3px;
}

.kart-main {
    width: min(1440px, 100%);
    margin: 0 auto;
    padding: 0 clamp(12px, 3vw, 40px) 42px;
}

.kart-viewport {
    position: relative;
    width: 100%;
}

.kart-stage {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-radius: 20px;
    background: #020711;
    box-shadow: 0 28px 80px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(255, 255, 255, 0.12);
}

.kart-stage iframe {
    display: block;
    width: 100%;
    height: 100%;
    border: 0;
}

.kart-rotate {
    display: none;
    margin: 10px 0 0;
    color: #a9bfd1;
    font-size: 0.82rem;
    text-align: center;
}

.kart-browser-help {
    margin-top: 20px;
    padding: 18px 20px;
    border: 1px solid rgba(52, 231, 242, 0.2);
    border-radius: 16px;
    background: var(--kart-panel);
    color: #bed0df;
    font-size: 0.9rem;
    line-height: 1.65;
}

.kart-browser-help h2 {
    margin: 0 0 8px;
    color: var(--kart-white);
    font-size: 1.05rem;
}

.kart-browser-help p {
    margin: 8px 0;
}

.kart-browser-help ol {
    margin: 12px 0;
    padding-left: 1.5em;
}

.kart-browser-help li + li {
    margin-top: 8px;
}

.kart-copy-link {
    margin-top: 8px;
}

.kart-copy-link:disabled {
    opacity: 0.65;
    cursor: wait;
}

.kart-copy-status {
    color: var(--kart-lime);
}

.kart-link-fallback {
    width: 100%;
    min-height: 44px;
    padding: 10px;
    border: 1px solid #4c6d88;
    border-radius: 8px;
    color: var(--kart-white);
    background: var(--kart-navy);
    font: inherit;
    font-size: 16px;
}

.kart-browser-help[hidden],
.kart-link-fallback[hidden] {
    display: none;
}

.kart-guide {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(360px, 0.75fr);
    gap: clamp(24px, 5vw, 72px);
    padding: clamp(32px, 5vw, 64px) clamp(4px, 2vw, 24px) 28px;
}

.kart-guide h2,
.kart-items h2 {
    margin: 7px 0 10px;
    color: #fff;
    font-family: "Fredoka One", ui-rounded, sans-serif;
    font-weight: 400;
    line-height: 1.16;
    text-wrap: balance;
}

.kart-guide h2 {
    font-size: clamp(1.65rem, 3.2vw, 2.7rem);
}

.kart-guide-copy > p:not(.kart-section-label) {
    max-width: 650px;
    margin: 0;
    color: #a9bfd1;
    line-height: 1.75;
    text-wrap: pretty;
}

.kart-guide strong {
    color: var(--kart-lime);
    font-variant-numeric: tabular-nums;
}

.kart-tracks {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 20px;
}

.kart-tracks span {
    padding: 7px 11px;
    border-radius: 9px;
    color: #d9ebf8;
    background: rgba(255, 255, 255, 0.07);
    font-size: 0.82rem;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.kart-controls dl {
    margin: 8px 0 0;
}

.kart-controls dl > div {
    display: grid;
    grid-template-columns: minmax(112px, 0.8fr) 1.4fr;
    gap: 12px;
    padding: 7px 0;
}

.kart-controls dt {
    color: var(--kart-lime);
    font-weight: 800;
    font-variant-numeric: tabular-nums;
}

.kart-controls dd {
    margin: 0;
    color: #bed0df;
}

.kart-touch-note {
    margin: 12px 0 0;
    color: #7892a8;
    font-size: 0.82rem;
}

.kart-items {
    padding: 28px clamp(4px, 2vw, 24px);
    border-radius: 22px;
    background: linear-gradient(135deg, rgba(18, 48, 76, 0.82), rgba(10, 30, 52, 0.7));
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08), 0 20px 50px rgba(0, 0, 0, 0.18);
}

.kart-items-heading {
    padding: 0 16px 8px;
}

.kart-items h2 {
    font-size: clamp(1.35rem, 2.6vw, 2rem);
}

.kart-items ul {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.kart-items li {
    min-width: 0;
    padding: 15px 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.055);
}

.kart-items li > span {
    flex: 0 0 auto;
    font-size: 1.45rem;
}

.kart-items li div {
    min-width: 0;
}

.kart-items strong,
.kart-items small {
    display: block;
}

.kart-items strong {
    font-size: 0.86rem;
    white-space: nowrap;
}

.kart-items small {
    margin-top: 3px;
    color: #829bb0;
    font-size: 0.72rem;
    line-height: 1.35;
}

.kart-status {
    min-height: 1.4em;
    margin: 14px 0 0;
    color: #ffd37b;
    font-size: 0.85rem;
    text-align: center;
}

@media (max-width: 920px) {
    .kart-header {
        grid-template-columns: 1fr auto;
    }

    .kart-title-group {
        grid-column: 1 / -1;
        grid-row: 2;
    }

    .kart-guide {
        grid-template-columns: 1fr;
    }

    .kart-items ul {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (orientation: portrait) and (max-width: 720px) {
    .kart-rotate {
        display: block;
    }
}

@media (max-width: 600px) {
    .kart-header {
        min-height: 64px;
        padding-block: 8px;
    }

    .kart-home span:last-child,
    .kart-badge {
        display: none;
    }

    .kart-home {
        width: 44px;
        padding: 0;
    }

    .kart-fullscreen {
        min-width: 44px;
        padding: 0 11px;
    }

    .kart-fullscreen span {
        display: none;
    }

    .kart-title-group h1 {
        font-size: 1.25rem;
    }

    .kart-stage {
        border-radius: 12px;
    }

    .kart-items ul {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (orientation: landscape) and (max-height: 600px) {
    .kart-header {
        min-height: 48px;
        padding-block: 2px;
        grid-template-columns: 1fr auto 1fr;
        gap: 8px;
    }

    .kart-title-group {
        grid-column: auto;
        grid-row: auto;
    }

    .kart-kicker,
    .kart-badge,
    .kart-home span:last-child {
        display: none;
    }

    .kart-title-group h1 {
        margin: 0;
        font-size: 1.15rem;
    }

    .kart-main {
        padding-bottom: 12px;
    }

    .kart-stage {
        width: min(100%, calc((100vh - 60px) * 16 / 9));
        margin: 0 auto;
        border-radius: 10px;
    }

    .kart-guide,
    .kart-items,
    .kart-status {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    .kart-page *,
    .kart-page *::before,
    .kart-page *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Keep expanded rules after compact landscape rules. The native fullscreen host
   stays untransformed; only its landscape-sized stage rotates. */
.kart-page.kart-expanded {
    overflow: hidden;
    overscroll-behavior: none;
}

.kart-page.kart-expanded > .kart-header,
.kart-page.kart-expanded .kart-main > :not(.kart-viewport) {
    display: none;
}

.kart-page.kart-expanded .kart-main {
    padding: 0;
}

.kart-viewport.is-expanded {
    position: fixed;
    z-index: 10000;
    top: var(--kart-view-top, 0px);
    left: var(--kart-view-left, 0px);
    width: var(--kart-view-width, 100vw);
    height: var(--kart-view-height, 100dvh);
    max-width: none;
    max-height: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background: #020711;
    overscroll-behavior: none;
}

/* Separate rules: an unsupported prefixed pseudo-class must never invalidate
   the shared immersive selector in Firefox or older WebKit. */
.kart-viewport:fullscreen {
    max-width: none;
    max-height: none;
    margin: 0;
    padding: 0;
}

.kart-viewport:-webkit-full-screen {
    max-width: none;
    max-height: none;
    margin: 0;
    padding: 0;
}

.kart-viewport.is-expanded .kart-stage {
    --kart-safe-top: env(safe-area-inset-top, 0px);
    --kart-safe-right: env(safe-area-inset-right, 0px);
    --kart-safe-left: env(safe-area-inset-left, 0px);
    --kart-safe-bottom: env(safe-area-inset-bottom, 0px);
    position: absolute;
    top: 0;
    left: 0;
    width: var(--kart-stage-width, 100%);
    height: var(--kart-stage-height, 100%);
    min-width: 0;
    max-width: none;
    max-height: none;
    aspect-ratio: auto;
    margin: 0;
    border-radius: 0;
    box-shadow: none;
    transform-origin: 0 0;
    touch-action: none;
}

.kart-viewport.is-expanded .kart-stage.is-rotated {
    --kart-safe-top: env(safe-area-inset-right, 0px);
    --kart-safe-right: env(safe-area-inset-bottom, 0px);
    --kart-safe-left: env(safe-area-inset-top, 0px);
    --kart-safe-bottom: env(safe-area-inset-left, 0px);
    transform: translateX(var(--kart-view-width)) rotate(90deg);
}

.kart-exit-fullscreen {
    position: absolute;
    z-index: 2;
    top: max(8px, var(--kart-safe-top, 0px));
    /* Center above the gap between the centered Godot lap and timer panels. */
    left: clamp(calc(var(--kart-safe-left, 0px) + 24px), calc(50% + min(var(--kart-stage-width) * 0.1875, var(--kart-stage-height) * 0.333333)), calc(100% - var(--kart-safe-right, 0px) - 24px));
    width: 44px;
    height: 44px;
    padding: 11px;
    transform: translateX(-50%);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 10px;
    color: #e2edf6;
    background: rgba(7, 20, 38, 0.75);
    cursor: pointer;
    touch-action: manipulation;
}

.kart-exit-fullscreen svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* On shallow WeChat viewports, the wide side margin is clear of the centered HUD. */
.kart-stage.is-shallow-wide .kart-exit-fullscreen {
    left: max(34px, calc(var(--kart-safe-left, 0px) + 26px));
}

.kart-exit-fullscreen:focus-visible {
    outline: 3px solid var(--kart-lime);
    outline-offset: 2px;
}

.kart-fullscreen-status {
    position: absolute;
    z-index: 3;
    right: max(12px, var(--kart-safe-right, 0px));
    bottom: max(12px, var(--kart-safe-bottom, 0px));
    left: max(12px, var(--kart-safe-left, 0px));
    width: fit-content;
    max-width: min(520px, 64%);
    margin: 0 auto;
    padding: 8px 12px;
    border-radius: 10px;
    background: rgba(7, 20, 38, 0.88);
    color: #e2edf6;
    font-size: 12px;
    line-height: 1.45;
    text-align: center;
    pointer-events: none;
}

.kart-exit-fullscreen[hidden],
.kart-fullscreen-status[hidden] {
    display: none;
}