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

/* Cyberpunk Neon Tetris Theme */
:root {
    --neon-cyan: #00ffff;
    --neon-pink: #ff006e;
    --neon-purple: #8338ec;
    --neon-green: #06ffa5;
    --neon-orange: #ff8500;
    --neon-blue: #3a86ff;
    --neon-yellow: #ffbe0b;
    --dark-bg: #0a0a0f;
    --darker-bg: #050508;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --text-glow: 0 0 10px currentColor;
    --box-glow: 0 0 20px var(--neon-cyan), 0 0 40px var(--neon-cyan), 0 0 60px var(--neon-cyan);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    font-family: 'Orbitron', monospace;
    background: var(--dark-bg);
    color: white;
    overflow-x: hidden;
    position: relative;
}

/* Animated Cyberpunk Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 80%, var(--neon-purple) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, var(--neon-cyan) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, var(--neon-pink) 0%, transparent 50%),
        linear-gradient(135deg, var(--dark-bg) 0%, var(--darker-bg) 100%);
    animation: backgroundPulse 8s ease-in-out infinite;
    z-index: -2;
}

/* Matrix-style falling code animation */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 98px,
            rgba(0, 255, 255, 0.03) 100px
        );
    animation: matrixFall 20s linear infinite;
    z-index: -1;
}

@keyframes backgroundPulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 0.8; }
}

@keyframes matrixFall {
    0% { transform: translateY(-100vh); }
    100% { transform: translateY(100vh); }
}

@keyframes gridPulse {
    0%, 100% { opacity: 0.2; }
    50% { opacity: 0.4; }
}

/* Main Game Container */
.game-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    position: relative;
}

/* Floating Particles */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: var(--neon-cyan);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
    box-shadow: 0 0 10px currentColor;
}

@keyframes float {
    0%, 100% { transform: translateY(0) translateX(0); opacity: 0; }
    50% { opacity: 1; }
}

/* Top UI Bar */
.ui-bar {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    gap: 15px;
}

.ui-btn {
    background: var(--glass-bg);
    border: 2px solid var(--neon-cyan);
    border-radius: 8px;
    color: var(--neon-cyan);
    padding: 10px 20px;
    cursor: pointer;
    font-family: 'Orbitron', monospace;
    font-weight: bold;
    text-transform: uppercase;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.3);
    text-shadow: var(--text-glow);
}

.ui-btn:hover {
    background: rgba(0, 255, 255, 0.1);
    box-shadow: var(--box-glow);
    transform: translateY(-2px);
}

/* Main Game Panel */
#tetris {
    display: flex;
    gap: 30px;
    background: var(--glass-bg);
    border: 3px solid var(--neon-cyan);
    border-radius: 20px;
    padding: 30px;
    backdrop-filter: blur(15px);
    box-shadow:
        var(--box-glow),
        inset 0 0 50px rgba(0, 255, 255, 0.1);
    position: relative;
    animation: gameGlow 3s ease-in-out infinite alternate;
}

@keyframes gameGlow {
    0% { box-shadow: var(--box-glow), inset 0 0 50px rgba(0, 255, 255, 0.1); }
    100% {
        box-shadow:
            0 0 30px var(--neon-pink),
            0 0 60px var(--neon-pink),
            0 0 90px var(--neon-pink),
            inset 0 0 50px rgba(255, 0, 110, 0.1);
    }
}

/* Game Canvas */
#canvas {
    width: 320px;  /* Increased from 240px */
    height: 640px; /* Increased from 480px */
    background: rgba(0, 0, 0, 0.8);
    border: 3px solid var(--neon-purple);
    border-radius: 10px;
    position: relative;
    overflow: hidden;
    box-shadow:
        0 0 30px var(--neon-purple),
        inset 0 0 30px rgba(131, 56, 236, 0.2);
}

/* Neon Grid Effect */
#canvas::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        repeating-linear-gradient(to right, var(--neon-cyan) 0 1px, transparent 1px 32px),
        repeating-linear-gradient(to bottom, var(--neon-cyan) 0 1px, transparent 1px 32px);
    opacity: 0.2;
    pointer-events: none;
    z-index: 1;
    animation: gridPulse 2s ease-in-out infinite;
}

/* Tetris Pieces with Neon Effects */
.piece, .square {
    width: 32px;   /* Increased from 24px */
    height: 32px;  /* Increased from 24px */
    position: absolute;
    border-radius: 4px;
    box-sizing: border-box;
    z-index: 10;
    transition: all 0.2s ease;
    border: 2px solid;
}

.ghost {
    opacity: 0.4;
    border-style: dashed;
    background: transparent !important;
    z-index: 5;
    animation: ghostPulse 1s ease-in-out infinite;
}

@keyframes ghostPulse {
    0%, 100% { opacity: 0.2; }
    50% { opacity: 0.6; }
}

/* Neon Tetris Piece Colors */
.type0 {
    background: linear-gradient(135deg, var(--neon-cyan), #007d7d);
    border-color: var(--neon-cyan);
    box-shadow: 0 0 15px var(--neon-cyan), inset 0 0 10px rgba(0, 255, 255, 0.3);
}

.type1 {
    background: linear-gradient(135deg, var(--neon-pink), #b3004d);
    border-color: var(--neon-pink);
    box-shadow: 0 0 15px var(--neon-pink), inset 0 0 10px rgba(255, 0, 110, 0.3);
}

.type2 {
    background: linear-gradient(135deg, var(--neon-orange), #cc6a00);
    border-color: var(--neon-orange);
    box-shadow: 0 0 15px var(--neon-orange), inset 0 0 10px rgba(255, 133, 0, 0.3);
}

.type3 {
    background: linear-gradient(135deg, var(--neon-purple), #5c269c);
    border-color: var(--neon-purple);
    box-shadow: 0 0 15px var(--neon-purple), inset 0 0 10px rgba(131, 56, 236, 0.3);
}

.type4 {
    background: linear-gradient(135deg, var(--neon-green), #04cc7a);
    border-color: var(--neon-green);
    box-shadow: 0 0 15px var(--neon-green), inset 0 0 10px rgba(6, 255, 165, 0.3);
}

.type5 {
    background: linear-gradient(135deg, var(--neon-yellow), #cc9608);
    border-color: var(--neon-yellow);
    box-shadow: 0 0 15px var(--neon-yellow), inset 0 0 10px rgba(255, 190, 11, 0.3);
}

.type6 {
    background: linear-gradient(135deg, var(--neon-blue), #2d6acc);
    border-color: var(--neon-blue);
    box-shadow: 0 0 15px var(--neon-blue), inset 0 0 10px rgba(58, 134, 255, 0.3);
}

/* Light Theme */
.light-theme {
    --neon-cyan: #0066cc;
    --neon-pink: #cc0066;
    --neon-purple: #6633cc;
    --neon-green: #00cc66;
    --neon-orange: #cc6600;
    --neon-blue: #3366cc;
    --neon-yellow: #cc9900;
    --dark-bg: #f5f5f5;
    --darker-bg: #ffffff;
    --glass-bg: rgba(0, 0, 0, 0.05);
    --text-glow: 0 0 5px rgba(0, 0, 0, 0.3);
    --box-glow: 0 0 10px rgba(0, 102, 204, 0.3), 0 0 20px rgba(0, 102, 204, 0.2), 0 0 30px rgba(0, 102, 204, 0.1);
}

.light-theme body::before {
    background:
        radial-gradient(circle at 20% 80%, rgba(102, 51, 204, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 102, 204, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(204, 0, 102, 0.1) 0%, transparent 50%),
        linear-gradient(135deg, #f5f5f5 0%, #ffffff 100%);
}

.light-theme .particles .particle {
    background: rgba(0, 102, 204, 0.6);
}

.light-theme #canvas {
    background: rgba(255, 255, 255, 0.9);
    border-color: var(--neon-purple);
}

.light-theme #canvas::before {
    background-image:
        repeating-linear-gradient(to right, rgba(0, 102, 204, 0.3) 0 1px, transparent 1px 32px),
        repeating-linear-gradient(to bottom, rgba(0, 102, 204, 0.3) 0 1px, transparent 1px 32px);
    opacity: 0.3;
}

.light-theme .ui-btn {
    border-color: var(--neon-blue);
    color: var(--neon-blue);
    box-shadow: 0 0 20px rgba(51, 102, 204, 0.3);
}

.light-theme #tetris {
    border-color: var(--neon-blue);
    box-shadow:
        0 0 30px var(--neon-blue),
        inset 0 0 50px rgba(51, 102, 204, 0.1);
}

.light-theme .stat-item {
    border-color: var(--neon-blue);
    box-shadow: 0 0 15px rgba(51, 102, 204, 0.3);
}

.light-theme .game-btn {
    background: linear-gradient(135deg, #cc0066, #99004d);
    border-color: #cc0066;
    box-shadow: 0 0 20px rgba(204, 0, 102, 0.3);
}

.light-theme .type0 {
    background: linear-gradient(135deg, #0088ff, #0066cc);
    border-color: #0088ff;
    box-shadow: 0 0 10px rgba(0, 136, 255, 0.4), inset 0 0 10px rgba(0, 136, 255, 0.2);
}

.light-theme .type1 {
    background: linear-gradient(135deg, #ff0088, #cc0066);
    border-color: #ff0088;
    box-shadow: 0 0 10px rgba(255, 0, 136, 0.4), inset 0 0 10px rgba(255, 0, 136, 0.2);
}

.light-theme .type2 {
    background: linear-gradient(135deg, #ff8800, #cc6600);
    border-color: #ff8800;
    box-shadow: 0 0 10px rgba(255, 136, 0, 0.4), inset 0 0 10px rgba(255, 136, 0, 0.2);
}

.light-theme .type3 {
    background: linear-gradient(135deg, #8833ff, #6633cc);
    border-color: #8833ff;
    box-shadow: 0 0 10px rgba(136, 51, 255, 0.4), inset 0 0 10px rgba(136, 51, 255, 0.2);
}

.light-theme .type4 {
    background: linear-gradient(135deg, #00ff88, #00cc66);
    border-color: #00ff88;
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.4), inset 0 0 10px rgba(0, 255, 136, 0.2);
}

.light-theme .type5 {
    background: linear-gradient(135deg, #ffcc00, #cc9900);
    border-color: #ffcc00;
    box-shadow: 0 0 10px rgba(255, 204, 0, 0.4), inset 0 0 10px rgba(255, 204, 0, 0.2);
}

.light-theme .type6 {
    background: linear-gradient(135deg, #4488ff, #3366cc);
    border-color: #4488ff;
    box-shadow: 0 0 10px rgba(68, 136, 255, 0.4), inset 0 0 10px rgba(68, 136, 255, 0.2);
}

/* Info Panel */
#info {
    width: 200px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Next Shape Preview */
#next_shape {
    width: 120px;
    height: 120px;
    background: rgba(0, 0, 0, 0.6);
    border: 2px solid var(--neon-green);
    border-radius: 12px;
    margin: 0 auto;
    position: relative;
    box-shadow:
        0 0 20px var(--neon-green),
        inset 0 0 20px rgba(6, 255, 165, 0.1);
}

.next-label {
    text-align: center;
    color: var(--neon-green);
    font-weight: bold;
    margin-bottom: 10px;
    text-transform: uppercase;
    text-shadow: var(--text-glow);
    font-size: 14px;
}

/* Stats Display */
.stat-item {
    background: var(--glass-bg);
    border: 2px solid var(--neon-cyan);
    border-radius: 10px;
    padding: 15px;
    text-align: center;
    backdrop-filter: blur(10px);
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.3);
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 25px rgba(0, 255, 255, 0.5);
}

.stat-label {
    font-size: 12px;
    color: var(--neon-cyan);
    text-transform: uppercase;
    margin-bottom: 5px;
    text-shadow: var(--text-glow);
}

.stat-value {
    font-size: 24px;
    font-weight: bold;
    color: white;
    text-shadow: 0 0 15px currentColor;
}

/* Action Buttons */
.game-btn {
    background: linear-gradient(135deg, var(--neon-pink), #b3004d);
    border: 3px solid var(--neon-pink);
    border-radius: 12px;
    color: white;
    padding: 15px 25px;
    cursor: pointer;
    font-family: 'Orbitron', monospace;
    font-weight: bold;
    font-size: 16px;
    text-transform: uppercase;
    transition: all 0.3s ease;
    text-shadow: var(--text-glow);
    box-shadow: 0 0 20px var(--neon-pink);
    position: relative;
    overflow: hidden;
}

.game-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.game-btn:hover::before {
    left: 100%;
}

.game-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 30px var(--neon-pink), 0 5px 15px rgba(0, 0, 0, 0.3);
}

.game-btn:active {
    transform: translateY(0);
}

/* Controls Info */
.controls-info {
    background: var(--glass-bg);
    border: 2px solid var(--neon-yellow);
    border-radius: 8px;
    padding: 12px;
    font-size: 11px;
    text-align: center;
    color: var(--neon-yellow);
    text-shadow: var(--text-glow);
    backdrop-filter: blur(5px);
}

/* Modal Styling */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(10px);
}

.modal-content {
    background: var(--glass-bg);
    border: 3px solid var(--neon-cyan);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    max-width: 500px;
    backdrop-filter: blur(20px);
    box-shadow: var(--box-glow);
    animation: modalAppear 0.5s ease-out;
}

@keyframes modalAppear {
    0% {
        opacity: 0;
        transform: scale(0.8) translateY(50px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-content h2 {
    color: var(--neon-cyan);
    text-shadow: var(--text-glow);
    margin-bottom: 20px;
    font-size: 28px;
}

.modal-content ul {
    text-align: left;
    color: white;
    line-height: 1.6;
}

.modal-content li {
    margin-bottom: 8px;
    padding-left: 10px;
}

/* Line Clear Effects */
.line-clear-effect {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: 'Orbitron', monospace;
    font-weight: 900;
    z-index: 3000;
    pointer-events: none;
    text-shadow: 0 0 30px currentColor;
}

.single-clear {
    color: var(--neon-green);
    font-size: 3em;
    animation: lineClearEffect 2s ease-out forwards;
}

.double-clear {
    color: var(--neon-yellow);
    font-size: 3.5em;
    animation: lineClearEffect 2s ease-out forwards;
}

.triple-clear {
    color: var(--neon-orange);
    font-size: 4em;
    animation: lineClearEffect 2s ease-out forwards;
}

.tetris-clear {
    color: var(--neon-pink);
    font-size: 5em;
    animation: tetrisExplosion 3s ease-out forwards;
}

.screen-flash {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(0, 255, 255, 0.4) 0%, transparent 70%);
    z-index: 2999;
    pointer-events: none;
    animation: screenFlash 0.6s ease-out;
}

@keyframes lineClearEffect {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.5) rotate(-10deg);
    }
    30% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.2) rotate(5deg);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(1) rotate(0deg) translateY(-100px);
    }
}

@keyframes tetrisExplosion {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.3);
    }
    20% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.4);
    }
    40% {
        transform: translate(-50%, -50%) scale(1.2);
    }
    60% {
        transform: translate(-50%, -50%) scale(1.3);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(1.5) translateY(-150px);
    }
}

@keyframes screenFlash {
    0%, 100% { opacity: 0; }
    50% { opacity: 1; }
}

/* Game Over Effect */
.game-over-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(255, 0, 110, 0.8), rgba(131, 56, 236, 0.8));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    font-weight: bold;
    color: white;
    text-shadow: 0 0 30px currentColor;
    animation: gameOverPulse 2s ease-in-out infinite;
    z-index: 100;
}

@keyframes gameOverPulse {
    0%, 100% { opacity: 0.8; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.05); }
}

/* Mobile Responsive */
@media (max-width: 768px) {
    #tetris {
        flex-direction: column;
        align-items: center;
        gap: 20px;
        padding: 20px;
    }

    #canvas {
        width: 200px;
        height: 400px;
    }

    #info {
        width: 100%;
        max-width: 300px;
    }

    .ui-bar {
        top: 10px;
        right: 10px;
        gap: 10px;
    }

    .ui-btn {
        padding: 8px 15px;
        font-size: 12px;
    }
}