/* RAD RACER - retro NES-style letterboxed layout (4:3) */

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html,
body {
    width: 100%;
    height: 100%;
    background: #000;
    overflow: hidden;
    font-family: 'Courier New', Courier, monospace;
    color: #fff;
}

#game-container {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000;
}

/* 4:3 stage that keeps the HUD pinned to the canvas box */
#game-frame {
    position: relative;
    aspect-ratio: 4 / 3;
    width: min(100vw, calc(100vh * (4 / 3)));
    height: min(100vh, calc(100vw * (3 / 4)));
}

#game-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
    image-rendering: pixelated;
    background: #000;
}

.hidden {
    display: none !important;
}

/* ---------------- HUD ---------------- */
#hud {
    position: absolute;
    inset: 0;
    pointer-events: none;
    text-shadow: 0 0 6px rgba(255, 255, 255, 0.4);
    padding: 1.2% 1.5%;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    font-size: clamp(10px, 2.2vmin, 24px);
}

.hud-left,
.hud-center,
.hud-right {
    display: flex;
    flex-direction: column;
}

.hud-left {
    align-items: flex-start;
}

.hud-center {
    align-items: center;
    flex: 1;
}

.hud-right {
    align-items: flex-end;
}

.hud-label {
    color: #ffd24a;
    letter-spacing: 2px;
    text-shadow: 0 0 6px #ff9d00;
}

.hud-value {
    color: #fff;
    font-weight: bold;
    text-shadow: 0 0 6px #4ad2ff;
}

.hud-unit {
    color: #888;
    font-size: 0.7em;
    letter-spacing: 1px;
}

.hud-level {
    color: #4affd2;
    letter-spacing: 3px;
    font-weight: bold;
    text-shadow: 0 0 8px #00ffaa;
}

.hud-time {
    color: #fff;
    font-weight: bold;
    font-size: 1.6em;
    text-shadow: 0 0 8px #4ad2ff;
}

.hud-time.urgent {
    color: #ff4a4a;
    text-shadow: 0 0 10px #ff0000;
    animation: pulse 0.6s infinite;
}

.hud-speed {
    color: #fff;
    font-weight: bold;
    text-shadow: 0 0 6px #4ad2ff;
    margin-bottom: 0.4em;
}

.hud-rpm {
    display: flex;
    gap: 2px;
    width: 8em;
    height: 1em;
}

.hud-rpm .seg {
    flex: 1;
    background: #222;
    border: 1px solid #444;
}

.hud-rpm .seg.on {
    background: #4aff4a;
    box-shadow: 0 0 6px #4aff4a;
}

.hud-rpm .seg.red.on {
    background: #ff2a2a;
    box-shadow: 0 0 8px #ff2a2a;
}

/* ---------------- Overlays ---------------- */
.overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: rgba(0, 0, 0, 0.55);
    z-index: 5;
}

#title-screen {
    background: rgba(0, 0, 0, 0.35);
}

.logo {
    font-size: clamp(40px, 14vmin, 160px);
    line-height: 0.9;
    font-style: italic;
    font-weight: 900;
    transform: skewX(-12deg);
    color: #ffd24a;
    background: linear-gradient(180deg, #fff, #ff6a00);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 12px #ff6a00);
    text-align: center;
}

.legal-note {
    color: #9aa7ff;
    font-style: italic;
    letter-spacing: 2px;
    margin-top: 0.35em;
    font-size: clamp(9px, 1.8vmin, 16px);
    text-shadow: 0 0 6px rgba(120, 140, 255, 0.8);
    text-align: center;
}

.subtitle {
    color: #4affd2;
    letter-spacing: 6px;
    margin-top: 0.6em;
    text-shadow: 0 0 8px #00ffaa;
    font-size: clamp(10px, 2.4vmin, 22px);
}

/* ---------------- Track select (title screen) ---------------- */
.track-select {
    margin-top: 1em;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35em;
}

.track-title {
    color: #ff4ae0;
    letter-spacing: 4px;
    font-size: clamp(10px, 2vmin, 20px);
    text-shadow: 0 0 8px #ff4ae0;
}

#track-options {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.18em;
    font-size: clamp(10px, 2.2vmin, 22px);
}

#track-options .track-opt {
    color: #6f6f6f;
    letter-spacing: 2px;
    transition: color 0.12s, text-shadow 0.12s;
}

#track-options .track-opt.active {
    color: #fff;
    font-weight: bold;
    text-shadow: 0 0 10px #4ad2ff;
}

#track-options .track-opt.active::before {
    content: '\25B6  ';
    color: #4affd2;
}

#track-options .track-opt.active::after {
    content: '  \25C0';
    color: #4affd2;
}

.prompt {
    margin-top: 1.4em;
    color: #fff;
    letter-spacing: 3px;
    font-size: clamp(12px, 2.6vmin, 26px);
    text-shadow: 0 0 8px #fff;
}

.controls {
    margin-top: 1em;
    color: #aaa;
    letter-spacing: 1px;
    font-size: clamp(9px, 1.8vmin, 16px);
}

.big-text {
    font-size: clamp(28px, 9vmin, 90px);
    font-weight: 900;
    font-style: italic;
    letter-spacing: 4px;
    color: #ffd24a;
    text-shadow: 0 0 16px #ff9d00;
}

.big-text.red {
    color: #ff4a4a;
    text-shadow: 0 0 16px #ff0000;
}

.big-text.gold {
    color: #ffe98a;
    text-shadow: 0 0 16px #ffd700;
}

.sub-text {
    margin-top: 0.6em;
    color: #fff;
    letter-spacing: 2px;
    font-size: clamp(12px, 2.6vmin, 26px);
}

.countdown {
    font-size: clamp(80px, 32vmin, 320px);
    font-weight: 900;
    color: #fff;
    text-shadow: 0 0 24px #4ad2ff;
}

.blink {
    animation: blink 1s steps(2, start) infinite;
}

@keyframes blink {
    50% {
        opacity: 0;
    }
}

@keyframes pulse {
    50% {
        transform: scale(1.12);
    }
}