:root {
    --primary: #d1d1d1; /* Metallic Silver */
    --primary-glow: rgba(255, 255, 255, 0.2);
    --accent: #007bff; /* Luxury Precision Blue */
    --bg-dark: #020202;
    --glass-bg: rgba(10, 10, 12, 0.95);
    --glass-border: rgba(255, 255, 255, 0.1);
    --carbon-pattern: radial-gradient(#1a1a1a 1px, transparent 0);
    --font-heading: 'Orbitron', sans-serif;
    --font-body: 'Inter', sans-serif;
    --gold: #c5a059;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    background: var(--bg-dark);
    color: #e0e0e0;
    font-family: var(--font-body);
    overflow: hidden;
    height: 100vh;
}

#game-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    background: #000;
    overflow: hidden;
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    background: rgba(0,0,0,0.8);
    backdrop-filter: blur(8px);
    z-index: 100;
}

.overlay.active {
    opacity: 1;
    pointer-events: all;
}

.hidden { display: none !important; }

/* LUXURY PANELS */
.glass {
    background: var(--glass-bg);
    background-image: var(--carbon-pattern);
    background-size: 8px 8px;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(30px);
    border-radius: 4px;
    padding: 60px;
    text-align: center;
    box-shadow: 0 40px 100px rgba(0,0,0,0.9), inset 0 0 40px rgba(255,255,255,0.02);
    max-width: 600px;
    width: 90%;
    overflow: hidden;
}

.hero-banner {
    width: calc(100% + 120px);
    margin: -60px -60px 40px -60px;
    height: 220px;
    overflow: hidden;
    border-bottom: 3px solid var(--accent);
    position: relative;
    box-shadow: 0 15px 40px rgba(0,0,0,0.6);
}

.hero-banner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.85) contrast(1.1);
    transition: transform 1.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.hero-banner:hover img {
    transform: scale(1.08);
}

h1 {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 900;
    letter-spacing: 15px;
    color: #fff;
    text-shadow: 0 10px 30px rgba(0,0,0,0.8);
    margin-bottom: 5px;
    text-transform: uppercase;
}

.subtitle {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    letter-spacing: 12px;
    color: var(--accent);
    margin-bottom: 50px;
    text-transform: uppercase;
    opacity: 0.8;
}

/* ELITE BUTTONS */
.menu-buttons {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.btn {
    cursor: pointer;
    border: none;
    font-family: var(--font-heading);
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 4px;
    font-size: 0.9rem;
}

.btn-primary {
    background: linear-gradient(135deg, #fff 0%, #aaa 100%);
    color: #000;
    padding: 22px;
    font-weight: 900;
    border-left: 4px solid var(--accent);
}

.btn-primary:hover {
    transform: translateX(10px);
    background: #fff;
    box-shadow: -10px 0 30px rgba(0, 123, 255, 0.3);
}

.btn-secondary {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.1);
    color: #888;
    padding: 18px;
}

.btn-secondary:hover {
    color: #fff;
    background: rgba(255,255,255,0.1);
}

/* EXECUTIVE HUD RELOCATION (Top Corners) */
#hud {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: 20px;
    display: flex;
    flex-direction: column;
    pointer-events: none;
    z-index: 50;
    opacity: 1;
}

.hud-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}

/* REAR VIEW MIRROR (Ultra Reality) */
#rear-view-mirror {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 250px;
    height: 60px;
    background: #000;
    border: 3px solid #333;
    border-top: none;
    border-radius: 0 0 15px 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.8);
    background: linear-gradient(to bottom, #222, #000);
}

#mirrorCanvas {
    width: 100%;
    height: 100%;
    opacity: 0.8;
}

.stats-group {
    background: rgba(5, 5, 5, 0.9);
    border-left: 2px solid var(--accent);
    padding: 10px 20px;
    backdrop-filter: blur(10px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.5);
}

.speed-container {
    background: rgba(5, 5, 5, 0.9);
    border-right: 2px solid var(--accent);
    padding: 10px 20px;
    backdrop-filter: blur(10px);
    text-align: right;
    box-shadow: 0 5px 15px rgba(0,0,0,0.5);
}

.stat-item label {
    display: block;
    font-size: 0.55rem;
    color: #888;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.stat-item span {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
}

#speed-val {
    font-size: 3rem;
    color: #fff;
    font-variant-numeric: tabular-nums;
}

.speedometer small {
    font-size: 0.7rem;
    color: var(--accent);
    letter-spacing: 2px;
}

/* FLOATING GAUGES (Middle-Top Sides) */
.hud-gauges {
    display: flex;
    justify-content: space-between;
    width: 100%;
    margin-top: 10px;
}

.gauge-panel {
    width: 180px;
    padding: 10px;
    background: rgba(0,0,0,0.4);
    border-radius: 4px;
}

.gauge-panel.left { border-left: 1px solid rgba(255,255,255,0.1); }
.gauge-panel.right { border-right: 1px solid rgba(255,255,255,0.1); text-align: right; }

/* PROGRESS BARS */
.bar-label {
    font-size: 0.5rem;
    letter-spacing: 2px;
    color: #777;
    margin-bottom: 5px;
    text-transform: uppercase;
}

.bar-bg {
    width: 100%;
    height: 3px;
    background: rgba(255,255,255,0.05);
}

.bar-fill {
    height: 100%;
    transition: width 0.3s ease;
}

#nitro-bar-fill { background: var(--accent); box-shadow: 0 0 10px var(--accent); }
#health-bar-fill { background: #fff; }

#audio-toggle {
    position: absolute;
    bottom: 20px;
    right: 20px;
    z-index: 60;
    background: rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.1);
    color: #fff;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1rem;
    cursor: pointer;
}

/* MOBILE CONTROLS (Ergonomic Fix) */
#mobile-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 150px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding: 20px 40px;
    pointer-events: none;
    z-index: 100;
}

.mobile-btn {
    pointer-events: auto;
    width: 90px;
    height: 90px;
    border: 2px solid rgba(255,255,255,0.1);
    background: rgba(0,0,0,0.3);
    backdrop-filter: blur(5px);
    color: #fff;
    border-radius: 15px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2.5rem;
    transition: all 0.2s;
}

.mobile-btn:active {
    background: var(--accent);
    transform: scale(0.9);
}

#touch-nitro {
    width: 100px;
    height: 60px;
    border-radius: 30px;
    font-family: var(--font-heading);
    font-size: 0.9rem;
    background: rgba(0, 123, 255, 0.2);
    border-color: var(--accent);
}

#vector-msg {
    position: absolute;
    top: 50px;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-heading);
    font-size: 0.7rem;
    color: var(--primary);
    letter-spacing: 5px;
    text-transform: uppercase;
    background: rgba(0,0,0,0.4);
    padding: 10px 30px;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.05);
    animation: fadePulse 2s infinite;
}

@keyframes fadePulse {
    0% { opacity: 0.4; }
    50% { opacity: 1; }
    100% { opacity: 0.4; }
}