@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;600;800;900&family=Rajdhani:wght@500;600;700&display=swap');

:root {
    --bg-main: #0c0f1d;
    --bg-card: rgba(18, 24, 45, 0.85);
    --border-color: rgba(64, 196, 255, 0.25);
    --border-glow: 0 0 15px rgba(0, 229, 255, 0.35);
    --neon-cyan: #00f0ff;
    --neon-pink: #ff007f;
    --neon-yellow: #ffe600;
    --neon-green: #00ff88;
    --neon-purple: #9d00ff;
    --text-primary: #e6f1ff;
    --text-muted: #8899b7;
    --font-heading: 'Orbitron', monospace, sans-serif;
    --font-body: 'Rajdhani', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    user-select: none;
}

body {
    background: radial-gradient(circle at center, #141b33 0%, #080a14 100%);
    color: var(--text-primary);
    font-family: var(--font-body);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow-x: hidden;
    padding: 15px;
}

header {
    text-align: center;
    margin-bottom: 12px;
}

.title {
    font-family: var(--font-heading);
    font-size: 2.6rem;
    font-weight: 900;
    letter-spacing: 4px;
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 25px rgba(0, 240, 255, 0.4);
    text-transform: uppercase;
}

.subtitle {
    font-size: 0.95rem;
    color: var(--text-muted);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.game-container {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    justify-content: center;
    background: rgba(12, 16, 32, 0.6);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    box-shadow: var(--border-glow);
    border-radius: 20px;
    padding: 24px;
    position: relative;
    max-width: 900px;
    width: 100%;
}

/* Side Panels */
.side-panel {
    display: flex;
    flex-direction: column;
    gap: 16px;
    width: 170px;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 14px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.35);
    transition: transform 0.2s, border-color 0.2s;
}

.card:hover {
    border-color: rgba(0, 240, 255, 0.5);
}

.card-title {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    color: var(--neon-cyan);
    letter-spacing: 1.5px;
    margin-bottom: 8px;
    text-transform: uppercase;
}

.card-value {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

.card-value.highlight {
    color: var(--neon-yellow);
    text-shadow: 0 0 12px rgba(255, 230, 0, 0.5);
}

canvas.mini-canvas {
    background: rgba(8, 11, 22, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    display: block;
    margin: 0 auto;
}

/* Main Board */
.canvas-wrapper {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.7), 0 0 15px rgba(0, 240, 255, 0.2);
    border: 2px solid rgba(0, 240, 255, 0.4);
    background: #080b18;
}

#tetris-canvas {
    display: block;
    background: #080b18;
}

/* Overlays (Pause / Game Over) */
.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(8, 11, 24, 0.88);
    backdrop-filter: blur(6px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 10;
    padding: 20px;
    text-align: center;
}

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

.overlay h2 {
    font-family: var(--font-heading);
    font-size: 2rem;
    letter-spacing: 3px;
    margin-bottom: 12px;
}

.overlay.game-over h2 {
    color: var(--neon-pink);
    text-shadow: 0 0 20px rgba(255, 0, 127, 0.6);
}

.overlay.paused h2 {
    color: var(--neon-cyan);
    text-shadow: 0 0 20px rgba(0, 240, 255, 0.6);
}

.overlay p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

/* Buttons */
.btn {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 1px;
    padding: 10px 18px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    outline: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--neon-cyan), #0099ff);
    color: #050b18;
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 22px rgba(0, 240, 255, 0.7);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--neon-cyan);
    color: #fff;
}

.btn-icon {
    padding: 8px 12px;
    font-size: 1rem;
}

.btn-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
}

/* Controls Info Modal / Section */
.controls-card {
    font-size: 0.82rem;
    line-height: 1.6;
    color: var(--text-muted);
    text-align: left;
}

.controls-card ul {
    list-style: none;
    padding: 0;
    margin-top: 6px;
}

.controls-card li {
    display: flex;
    justify-content: space-between;
    margin-bottom: 4px;
}

.key-badge {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    padding: 1px 6px;
    font-family: var(--font-heading);
    font-size: 0.72rem;
    color: var(--neon-cyan);
}

/* Virtual On-Screen Controller (for mobile/touch/clicks) */
.touch-controls {
    display: none;
    margin-top: 15px;
    width: 100%;
    max-width: 460px;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.touch-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--neon-cyan);
    padding: 14px;
    border-radius: 12px;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    touch-action: manipulation;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.touch-btn:active {
    background: rgba(0, 240, 255, 0.25);
    border-color: var(--neon-cyan);
    transform: scale(0.96);
}

.touch-btn.accent {
    color: var(--neon-pink);
    border-color: rgba(255, 0, 127, 0.4);
}

.touch-btn.accent:active {
    background: rgba(255, 0, 127, 0.25);
}

/* Shake Animation */
@keyframes shake {
    0% { transform: translate(0, 0); }
    20% { transform: translate(-4px, 3px); }
    40% { transform: translate(4px, -3px); }
    60% { transform: translate(-3px, 1px); }
    80% { transform: translate(2px, -2px); }
    100% { transform: translate(0, 0); }
}

.shake {
    animation: shake 0.35s ease;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .game-container {
        flex-direction: column;
        align-items: center;
        padding: 14px;
        gap: 14px;
    }

    .side-panel {
        flex-direction: row;
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }

    .side-panel .card {
        flex: 1;
        min-width: 100px;
    }

    .controls-card {
        display: none;
    }

    .touch-controls {
        display: grid;
    }
}