:root {
    --bg-color: #0a0a0f;
    --panel-bg: rgba(20, 20, 30, 0.6);
    --panel-border: rgba(255, 255, 255, 0.1);
    --text-primary: #ffffff;
    --text-secondary: #8b8b9d;
    --accent-glow: #00ffcc;
    --danger-glow: #ff0055;
    --snake-color: #00ffcc;
    --food-color: #ff0055;
    --font-main: 'Outfit', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(0, 255, 204, 0.05), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(255, 0, 85, 0.05), transparent 25%);
}

.game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    width: 100%;
    max-width: 500px;
    padding: 20px;
}

/* Glassmorphism Utilities */
.glass-panel {
    background: var(--panel-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--panel-border);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* Scoreboard */
.scoreboard {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.score-box {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.score-box .label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 600;
    letter-spacing: 1px;
}

.score-box .value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-glow);
    text-shadow: 0 0 10px rgba(0, 255, 204, 0.4);
}

.title-box h1 {
    font-size: 1.2rem;
    font-weight: 800;
    letter-spacing: 2px;
    background: linear-gradient(90deg, var(--accent-glow), #a020f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Canvas Area */
.canvas-wrapper {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 0 20px rgba(0, 255, 204, 0.1);
    border: 2px solid var(--panel-border);
    background-color: #050508;
}

#gameCanvas {
    display: block;
    width: 100%;
    max-width: 400px;
    height: auto;
    aspect-ratio: 1 / 1;
}

/* Overlays */
.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 20px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 10;
}

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

.overlay h2 {
    font-size: 2rem;
    margin-bottom: 10px;
    font-weight: 800;
}

.overlay p {
    color: var(--text-secondary);
    margin-bottom: 25px;
    font-size: 0.9rem;
}

.danger-text {
    color: var(--danger-glow);
    text-shadow: 0 0 15px rgba(255, 0, 85, 0.4);
}

.highlight {
    color: var(--accent-glow);
    font-weight: bold;
}

/* Buttons */
.glow-btn {
    background: transparent;
    color: var(--accent-glow);
    border: 2px solid var(--accent-glow);
    padding: 12px 24px;
    font-family: inherit;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 0 10px rgba(0, 255, 204, 0.2), inset 0 0 10px rgba(0, 255, 204, 0.1);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.glow-btn:hover {
    background: var(--accent-glow);
    color: #000;
    box-shadow: 0 0 20px rgba(0, 255, 204, 0.6);
}

/* Mobile Controls */
.mobile-controls {
    display: none; /* Hidden by default, shown on small screens */
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin-top: 10px;
}

.horizontal-controls {
    display: flex;
    gap: 40px;
}

.control-btn {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    color: var(--text-primary);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.control-btn svg {
    width: 28px;
    height: 28px;
}

.control-btn:active {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(0.9);
}

/* Responsive */
@media (max-width: 600px) {
    .mobile-controls {
        display: flex;
    }
    
    .game-container {
        padding: 10px;
    }
}