:root {
    color-scheme: dark;
    --bg: #04080f;
    --panel: rgba(10, 17, 27, 0.8);
    --panel-strong: rgba(8, 13, 23, 0.92);
    --border: rgba(114, 181, 255, 0.22);
    --border-strong: rgba(255, 165, 92, 0.26);
    --accent-cool: #71d6ff;
    --accent-hot: #ffb46e;
    --accent-danger: #ff6b5b;
    --text: #eef4ff;
    --muted: #91a4bf;
    --shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #02050a;
    color: var(--text);
    font-family: "Eurostile", "Microgramma D Extended", "Bahnschrift", "Segoe UI", sans-serif;
}

body {
    position: relative;
}

#gameCanvas,
.bg-noise,
.bg-vignette,
.bg-glow,
.hud-shell,
.trial-hud,
.loading-overlay {
    position: fixed;
    inset: 0;
}

#gameCanvas {
    width: 100%;
    height: 100%;
    display: block;
    background:
        radial-gradient(circle at top, rgba(23, 41, 72, 0.5), transparent 48%),
        linear-gradient(180deg, #07111d 0%, #03070d 80%);
}

.bg-noise {
    pointer-events: none;
    opacity: 0.08;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 4px 4px, 4px 4px;
    mix-blend-mode: soft-light;
}

.bg-vignette {
    pointer-events: none;
    background:
        radial-gradient(circle at center, transparent 35%, rgba(3, 7, 12, 0.55) 100%),
        linear-gradient(180deg, rgba(4, 8, 14, 0.15), rgba(4, 8, 14, 0.75));
    transition: opacity 220ms ease;
}

.bg-glow {
    pointer-events: none;
    filter: blur(80px);
    opacity: 0.5;
    transition: opacity 220ms ease;
}

.bg-glow-a {
    inset: auto auto 6vh -8vw;
    width: 28vw;
    height: 28vw;
    background: rgba(113, 214, 255, 0.12);
}

.bg-glow-b {
    inset: 8vh -10vw auto auto;
    width: 30vw;
    height: 30vw;
    background: rgba(255, 180, 110, 0.09);
}

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

.hud-shell.engine-hidden {
    opacity: 0;
}

.trial-hud {
    z-index: 2;
    display: grid;
    place-items: start center;
    pointer-events: none;
    padding-top: 18px;
    opacity: 1;
    transform: translateY(0);
    transition: opacity 220ms ease, transform 220ms ease;
}

.trial-hud.hidden {
    opacity: 0;
    transform: translateY(-10px);
}

.trial-card {
    min-width: min(680px, calc(100vw - 28px));
    max-width: calc(100vw - 28px);
    padding: 14px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.trial-time-block {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.trial-time-block strong {
    font-family: "Agency FB", "Bahnschrift SemiCondensed", sans-serif;
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 0.88;
    letter-spacing: 0.06em;
}

.trial-meta-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    min-width: min(420px, 60vw);
}

.trial-meta-cell {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.trial-meta-cell strong {
    font-size: 0.98rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

body.engine-live .bg-noise {
    opacity: 0;
}

body.engine-live .bg-vignette {
    opacity: 0.08;
}

body.engine-live .bg-glow {
    opacity: 0;
}

.frame-card {
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(18px);
    background:
        linear-gradient(180deg, rgba(26, 35, 48, 0.2), rgba(7, 11, 18, 0.02)),
        var(--panel);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.frame-card::before {
    content: "";
    position: absolute;
    inset: 0;
    border: 1px solid rgba(255, 255, 255, 0.03);
    pointer-events: none;
    clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.frame-card::after {
    content: "";
    position: absolute;
    inset: 1px;
    pointer-events: none;
    background:
        linear-gradient(90deg, rgba(113, 214, 255, 0.16), transparent 18%, transparent 82%, rgba(255, 180, 110, 0.18)),
        linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent 25%);
    opacity: 0.8;
    clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.eyebrow,
.chip-label {
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.72rem;
    color: var(--accent-cool);
}

.hud-top {
    position: absolute;
    top: 18px;
    left: 18px;
    right: 18px;
    display: grid;
    grid-template-columns: minmax(340px, 1.1fr) minmax(420px, 0.95fr);
    gap: 16px;
}

.brand-module,
.systems-module,
.race-ribbon,
.info-card,
.telemetry-card,
.speed-cluster,
.center-cluster {
    padding: 18px 20px;
}

.brand-title {
    margin: 8px 0 14px;
    font-size: clamp(2rem, 4vw, 3.4rem);
    line-height: 0.9;
    letter-spacing: 0.08em;
    font-family: "Agency FB", "Bahnschrift SemiCondensed", "Eurostile", sans-serif;
}

.brand-meta,
.systems-grid {
    display: grid;
    gap: 12px;
}

.brand-meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.meta-chip,
.system-tile {
    position: relative;
    padding: 14px 14px 12px;
    background: rgba(9, 15, 24, 0.72);
    border: 1px solid rgba(113, 214, 255, 0.14);
    clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}

.meta-chip strong,
.system-tile strong,
.ribbon-cell strong,
.telemetry-header strong,
.center-topline strong {
    display: block;
    margin-top: 8px;
    font-size: 1rem;
}

.systems-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-bottom: 14px;
}

.action-rack {
    display: grid;
    grid-template-columns: 1fr 1fr 1.2fr;
    gap: 10px;
    pointer-events: auto;
}

.segmented-control {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.hud-button {
    min-height: 50px;
    border: 1px solid rgba(113, 214, 255, 0.22);
    background:
        linear-gradient(180deg, rgba(22, 32, 48, 0.94), rgba(8, 12, 20, 0.98));
    color: var(--text);
    font: inherit;
    font-weight: 700;
    letter-spacing: 0.04em;
    cursor: pointer;
    clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
    transition: transform 120ms ease, border-color 120ms ease, background 120ms ease, box-shadow 120ms ease;
}

.hud-button:hover {
    transform: translateY(-1px);
    border-color: rgba(255, 180, 110, 0.42);
    background:
        linear-gradient(180deg, rgba(33, 48, 71, 0.95), rgba(12, 18, 29, 0.98));
    box-shadow: 0 0 18px rgba(113, 214, 255, 0.08);
}

.hud-button-primary {
    border-color: rgba(255, 180, 110, 0.4);
    background:
        linear-gradient(180deg, rgba(74, 45, 21, 0.95), rgba(30, 17, 7, 0.98));
}

.hud-button-segment.is-active {
    border-color: rgba(113, 214, 255, 0.48);
    color: var(--accent-cool);
}

.race-ribbon {
    position: absolute;
    top: 178px;
    left: 50%;
    transform: translateX(-50%);
    width: min(780px, calc(100vw - 420px));
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
}

.ribbon-cell {
    padding: 8px 10px 6px;
    text-align: center;
}

.ribbon-cell strong {
    margin-top: 6px;
    font-size: 1.18rem;
}

.side-stack {
    position: absolute;
    top: 250px;
    width: 320px;
    display: grid;
    gap: 14px;
}

.left-stack {
    left: 18px;
}

.right-stack {
    right: 18px;
}

.module-title {
    margin: 10px 0 14px;
    font-size: 1.1rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.control-grid {
    display: grid;
    gap: 10px;
}

.control-row {
    display: grid;
    grid-template-columns: auto auto 1fr;
    gap: 8px;
    align-items: center;
    color: var(--muted);
}

.keycap,
.spacer {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 54px;
    min-height: 30px;
    padding: 0 8px;
    border: 1px solid rgba(113, 214, 255, 0.18);
    background: rgba(7, 13, 22, 0.74);
    color: var(--text);
    letter-spacing: 0.08em;
    font-size: 0.8rem;
}

.spacer {
    visibility: hidden;
}

.accent-card {
    border-color: var(--border-strong);
}

.status-line {
    margin: 0;
    color: var(--muted);
    line-height: 1.5;
}

.telemetry-header,
.telemetry-subline,
.center-topline,
.center-readout,
.speed-flourish {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center;
}

.telemetry-subline,
.center-readout,
.speed-flourish {
    margin-top: 10px;
    color: var(--muted);
    font-size: 0.88rem;
}

.tach-track,
.nitro-track,
.sweep-track,
.loading-progress {
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(113, 214, 255, 0.16);
    background: rgba(7, 12, 21, 0.8);
}

.tach-track,
.nitro-track {
    margin-top: 12px;
    height: 18px;
    clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 50%, calc(100% - 12px) 100%, 0 100%, 12px 50%);
}

.sweep-track {
    margin-top: 12px;
    height: 16px;
    clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 100%, 12px 100%);
}

.tach-markers {
    position: absolute;
    inset: 0;
    background-image: repeating-linear-gradient(
        90deg,
        transparent 0,
        transparent calc(12.5% - 1px),
        rgba(255, 255, 255, 0.12) calc(12.5% - 1px),
        rgba(255, 255, 255, 0.12) 12.5%
    );
}

.tach-fill,
.nitro-fill,
.sweep-fill,
.loading-progress-fill {
    width: 0%;
    height: 100%;
    transition: width 150ms ease;
}

.tach-fill {
    background: linear-gradient(90deg, #6ec9ff 0%, #f4d85f 70%, #ff6b5b 100%);
    box-shadow: 0 0 22px rgba(113, 214, 255, 0.22);
}

.nitro-fill {
    background: linear-gradient(90deg, #52b6ff, #90f0ff);
    box-shadow: 0 0 24px rgba(113, 214, 255, 0.3);
}

.sweep-fill {
    background: linear-gradient(90deg, rgba(113, 214, 255, 0.8), rgba(255, 180, 110, 0.95));
}

.cockpit-bar {
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 18px;
    display: grid;
    grid-template-columns: minmax(270px, 0.9fr) minmax(320px, 1.2fr);
    gap: 16px;
}

.speed-mainline {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-top: 10px;
}

.speed-mainline strong {
    font-family: "Agency FB", "Bahnschrift SemiCondensed", sans-serif;
    font-size: clamp(4rem, 8vw, 6rem);
    line-height: 0.82;
    letter-spacing: 0.04em;
}

.speed-unit {
    color: var(--accent-hot);
    font-size: 1.15rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
}

.center-cluster {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.loading-overlay {
    --overlay-strength: 1;
    --card-offset: 0px;
    z-index: 3;
    display: grid;
    place-items: center;
    background:
        radial-gradient(circle at center,
            rgba(9, 16, 28, calc(0.08 + var(--overlay-strength) * 0.12)),
            rgba(3, 6, 10, calc(0.32 + var(--overlay-strength) * 0.56)));
    backdrop-filter: blur(calc(6px + var(--overlay-strength) * 12px));
    transition: opacity 320ms ease, visibility 320ms ease, background 220ms ease, backdrop-filter 220ms ease;
}

.loading-overlay.is-transition {
    background:
        radial-gradient(circle at center,
            rgba(16, 27, 45, calc(0.1 + var(--overlay-strength) * 0.12)),
            rgba(4, 7, 12, calc(0.24 + var(--overlay-strength) * 0.48)));
}

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

.loading-card {
    width: min(480px, calc(100vw - 36px));
    padding: 28px;
    background: var(--panel-strong);
    text-align: center;
    transform: translateY(var(--card-offset)) scale(1);
    transition: opacity 320ms ease, transform 320ms ease, box-shadow 220ms ease;
}

.loading-overlay.is-transition .loading-card {
    box-shadow:
        0 34px 90px rgba(0, 0, 0, 0.54),
        0 0 0 1px rgba(113, 214, 255, 0.08);
}

.loading-overlay.hidden .loading-card {
    opacity: 0;
    transform: translateY(14px) scale(0.985);
}

.loading-card h2 {
    margin: 12px 0 10px;
    font-size: clamp(1.7rem, 3vw, 2.4rem);
    line-height: 0.94;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

#loadingText {
    margin: 0;
    color: var(--muted);
}

.loading-progress {
    margin-top: 20px;
    height: 14px;
    clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 50%, calc(100% - 14px) 100%, 0 100%, 14px 50%);
}

.loading-progress-fill {
    background: linear-gradient(90deg, rgba(113, 214, 255, 0.9), rgba(255, 180, 110, 0.96));
}

.loading-progress-sheen {
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent 12%, rgba(255, 255, 255, 0.18) 48%, transparent 82%);
    transform: translateX(-100%);
    animation: sheen 1.8s linear infinite;
}

.loading-meta {
    margin-top: 12px;
    display: flex;
    justify-content: space-between;
    gap: 12px;
    color: var(--muted);
    font-size: 0.86rem;
}

#loadingPercent {
    color: var(--text);
    font-weight: 700;
}

#loadingDetail {
    color: var(--accent-hot);
}

@keyframes sheen {
    from {
        transform: translateX(-100%);
    }

    to {
        transform: translateX(100%);
    }
}

@media (max-width: 1280px) {
    .hud-top {
        grid-template-columns: 1fr;
    }

    .race-ribbon {
        top: 300px;
        width: calc(100vw - 36px);
    }

    .side-stack {
        top: auto;
        bottom: 168px;
        width: min(300px, calc(50vw - 28px));
    }

    .cockpit-bar {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 900px) {
    .trial-card {
        width: calc(100vw - 20px);
        min-width: 0;
        padding: 12px 14px;
        flex-direction: column;
        align-items: flex-start;
    }

    .trial-meta-grid {
        min-width: 0;
        width: 100%;
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .race-ribbon {
        position: static;
        transform: none;
        width: auto;
        margin: 0 18px;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .side-stack {
        position: static;
        width: auto;
        margin: 12px 18px 0;
    }

    .hud-shell {
        overflow: auto;
    }

    .hud-top,
    .cockpit-bar {
        position: static;
        margin: 18px;
    }

    .action-rack,
    .systems-grid,
    .brand-meta {
        grid-template-columns: 1fr;
    }

    .cockpit-bar {
        margin-top: 14px;
    }

    .loading-meta {
        flex-direction: column;
        align-items: flex-start;
    }
}