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

:root {
    --bg-dark: #0a0a0f;
    --bg-panel: #12121a;
    --neon-cyan: #00f5ff;
    --neon-magenta: #ff00ff;
    --neon-yellow: #ffff00;
    --neon-green: #00ff88;
    --neon-orange: #ff8800;
    --neon-red: #ff0055;
    --neon-blue: #0088ff;
    --neon-purple: #aa00ff;
    --text-color: #ffffff;
    --glow-cyan: 0 0 10px #00f5ff, 0 0 20px #00f5ff, 0 0 40px #00f5ff;
    --glow-magenta: 0 0 10px #ff00ff, 0 0 20px #ff00ff, 0 0 40px #ff00ff;
    --glow-red: 0 0 10px #ff0055, 0 0 20px #ff0055, 0 0 40px #ff0055;
}

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

body {
    font-family: 'Orbitron', Arial, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        repeating-linear-gradient(
            45deg,
            transparent 0px,
            transparent 50px,
            rgba(0, 245, 255, 0.02) 50px,
            rgba(0, 245, 255, 0.02) 100px
        ),
        repeating-linear-gradient(
            -45deg,
            transparent 0px,
            transparent 50px,
            rgba(255, 0, 255, 0.02) 50px,
            rgba(255, 0, 255, 0.02) 100px
        ),
        radial-gradient(ellipse at 20% 20%, rgba(0, 245, 255, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(255, 0, 255, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(0, 255, 136, 0.05) 0%, transparent 40%);
    pointer-events: none;
    z-index: 0;
}

.animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.bg-grid {
    position: absolute;
    width: 200%;
    height: 200%;
    top: -50%;
    left: -50%;
    background-image: 
        linear-gradient(rgba(0, 245, 255, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 245, 255, 0.08) 1px, transparent 1px);
    background-size: 40px 40px;
    animation: gridMove 15s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0) perspective(500px) rotateX(10deg); }
    50% { transform: translate(25px, 25px) perspective(500px) rotateX(5deg); }
    100% { transform: translate(40px, 40px) perspective(500px) rotateX(10deg); }
}

.bg-waves {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.bg-wave {
    position: absolute;
    width: 200%;
    height: 200%;
    top: -50%;
    left: -50%;
    background: 
        radial-gradient(circle at 30% 30%, rgba(0, 245, 255, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 70% 70%, rgba(255, 0, 255, 0.1) 0%, transparent 40%);
    animation: wavePulse 8s ease-in-out infinite;
}

@keyframes wavePulse {
    0%, 100% { 
        transform: scale(1) rotate(0deg);
        opacity: 0.5;
    }
    50% { 
        transform: scale(1.2) rotate(10deg);
        opacity: 0.8;
    }
}

.bg-particle {
    position: absolute;
    background: var(--neon-cyan);
    border-radius: 50%;
    box-shadow: 0 0 15px var(--neon-cyan), 0 0 30px var(--neon-cyan);
    animation: particleFloat 12s ease-in-out infinite;
    opacity: 0.8;
}

.bg-particle:nth-child(2) {
    width: 6px;
    height: 6px;
    background: var(--neon-magenta);
    box-shadow: 0 0 15px var(--neon-magenta), 0 0 30px var(--neon-magenta);
    animation-duration: 15s;
    animation-delay: -2s;
    left: 15%;
    top: 20%;
}

.bg-particle:nth-child(3) {
    width: 8px;
    height: 8px;
    background: var(--neon-yellow);
    box-shadow: 0 0 15px var(--neon-yellow), 0 0 30px var(--neon-yellow);
    animation-duration: 18s;
    animation-delay: -5s;
    left: 75%;
    top: 40%;
}

.bg-particle:nth-child(4) {
    width: 5px;
    height: 5px;
    background: var(--neon-green);
    box-shadow: 0 0 15px var(--neon-green), 0 0 30px var(--neon-green);
    animation-duration: 14s;
    animation-delay: -8s;
    left: 45%;
    top: 60%;
}

.bg-particle:nth-child(5) {
    width: 7px;
    height: 7px;
    background: var(--neon-purple);
    box-shadow: 0 0 15px var(--neon-purple), 0 0 30px var(--neon-purple);
    animation-duration: 16s;
    animation-delay: -3s;
    left: 85%;
    top: 80%;
}

.bg-particle:nth-child(6) {
    width: 4px;
    height: 4px;
    background: var(--neon-cyan);
    box-shadow: 0 0 15px var(--neon-cyan), 0 0 30px var(--neon-cyan);
    animation-duration: 20s;
    animation-delay: -10s;
    left: 25%;
    top: 75%;
}

.bg-particle:nth-child(7) {
    width: 9px;
    height: 9px;
    background: var(--neon-magenta);
    box-shadow: 0 0 15px var(--neon-magenta), 0 0 30px var(--neon-magenta);
    animation-duration: 13s;
    animation-delay: -6s;
    left: 55%;
    top: 10%;
}

.bg-particle:nth-child(8) {
    width: 5px;
    height: 5px;
    background: var(--neon-orange);
    box-shadow: 0 0 15px var(--neon-orange), 0 0 30px var(--neon-orange);
    animation-duration: 17s;
    animation-delay: -12s;
    left: 35%;
    top: 35%;
}

@keyframes particleFloat {
    0% { 
        transform: translateY(0) translateX(0) scale(1);
        opacity: 0.4;
    }
    25% { 
        transform: translateY(-150px) translateX(30px) scale(1.2);
        opacity: 0.9;
    }
    50% { 
        transform: translateY(-300px) translateX(-20px) scale(0.8);
        opacity: 0.6;
    }
    75% { 
        transform: translateY(-450px) translateX(25px) scale(1.1);
        opacity: 1;
    }
    100% { 
        transform: translateY(-600px) translateX(0) scale(1);
        opacity: 0.4;
    }
}

.bg-ring {
    position: absolute;
    border: 2px solid rgba(0, 245, 255, 0.2);
    border-radius: 50%;
    animation: ringExpand 10s ease-out infinite;
}

.bg-ring:nth-child(9) {
    width: 100px;
    height: 100px;
    left: 20%;
    top: 30%;
    animation-delay: 0s;
}

.bg-ring:nth-child(10) {
    width: 150px;
    height: 150px;
    left: 60%;
    top: 50%;
    border-color: rgba(255, 0, 255, 0.2);
    animation-delay: -3s;
}

.bg-ring:nth-child(11) {
    width: 80px;
    height: 80px;
    left: 40%;
    top: 70%;
    animation-delay: -6s;
}

@keyframes ringExpand {
    0% {
        transform: scale(0);
        opacity: 0.8;
    }
    100% {
        transform: scale(3);
        opacity: 0;
    }
}

.side-glow {
    position: fixed;
    top: 0;
    width: 100px;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.side-glow-left {
    left: 0;
    background: linear-gradient(90deg, rgba(0, 245, 255, 0.2) 0%, transparent 100%);
}

.side-glow-right {
    right: 0;
    background: linear-gradient(270deg, rgba(255, 0, 255, 0.2) 0%, transparent 100%);
}

.corner-glow {
    position: fixed;
    width: 200px;
    height: 200px;
    pointer-events: none;
    z-index: 0;
}

.corner-glow-tl {
    top: 0;
    left: 0;
    background: radial-gradient(circle at 0% 0%, rgba(0, 245, 255, 0.3) 0%, transparent 60%);
}

.corner-glow-tr {
    top: 0;
    right: 0;
    background: radial-gradient(circle at 100% 0%, rgba(255, 0, 255, 0.3) 0%, transparent 60%);
}

.corner-glow-bl {
    bottom: 0;
    left: 0;
    background: radial-gradient(circle at 0% 100%, rgba(255, 0, 255, 0.3) 0%, transparent 60%);
}

.corner-glow-br {
    bottom: 0;
    right: 0;
    background: radial-gradient(circle at 100% 100%, rgba(0, 245, 255, 0.3) 0%, transparent 60%);
}

.game-container {
    display: flex;
    gap: 40px;
    padding: 20px;
    position: relative;
    z-index: 1;
}

.game-area {
    position: relative;
    border: 3px solid var(--neon-cyan);
    border-radius: 12px;
    box-shadow: 
        0 0 20px rgba(0, 245, 255, 0.4),
        0 0 40px rgba(0, 245, 255, 0.2),
        inset 0 0 30px rgba(0, 245, 255, 0.1);
    background: var(--bg-panel);
    width: 326px;
    height: 646px;
    overflow: hidden;
}

.game-area::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border-radius: 14px;
    background: linear-gradient(45deg, var(--neon-cyan), var(--neon-magenta), var(--neon-cyan));
    z-index: -1;
    animation: borderGlow 3s linear infinite;
}

@keyframes borderGlow {
    0% { opacity: 0.5; }
    50% { opacity: 1; }
    100% { opacity: 0.5; }
}

#gameCanvas {
    display: block;
    width: 420px;
    height: 840px;
    background: linear-gradient(180deg, #0a0a12 0%, #0f0f18 100%);
    image-rendering: pixelated;
}

.game-area {
    position: relative;
    border: 3px solid var(--neon-cyan);
    border-radius: 12px;
    box-shadow: 
        0 0 20px rgba(0, 245, 255, 0.4),
        0 0 40px rgba(0, 245, 255, 0.2),
        inset 0 0 30px rgba(0, 245, 255, 0.1);
    background: var(--bg-panel);
    width: 426px;
    height: 846px;
    overflow: hidden;
}

.side-panel {
    display: flex;
    flex-direction: column;
    gap: 15px;
    min-width: 220px;
    height: 846px;
    justify-content: space-between;
}

.logo {
    text-align: center;
    padding: 20px;
    background: linear-gradient(135deg, rgba(0, 245, 255, 0.15), rgba(255, 0, 255, 0.15));
    border-radius: 12px;
    border: 2px solid var(--neon-cyan);
    box-shadow: 
        0 0 15px rgba(0, 245, 255, 0.3),
        inset 0 0 20px rgba(0, 245, 255, 0.1);
    flex-shrink: 0;
}

.stats {
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex-shrink: 0;
}

.tetris-text {
    display: block;
    font-size: 32px;
    font-weight: 900;
    color: var(--neon-cyan);
    text-shadow: var(--glow-cyan);
    letter-spacing: 6px;
}

.stats {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.stat-box {
    background: linear-gradient(180deg, var(--bg-panel) 0%, #1a1a25 100%);
    padding: 15px;
    border-radius: 10px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    transition: all 0.3s ease;
}

.stat-box:hover {
    border-color: var(--neon-cyan);
    box-shadow: 0 0 20px rgba(0, 245, 255, 0.4);
    transform: translateY(-2px);
}

.stat-label {
    font-size: 10px;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 2px;
    margin-bottom: 5px;
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--neon-cyan);
    text-shadow: 0 0 10px rgba(0, 245, 255, 0.5);
    transition: all 0.3s ease;
}

.stat-value.pulse {
    transform: scale(1.2);
    text-shadow: 0 0 20px rgba(0, 245, 255, 1), 0 0 40px rgba(0, 245, 255, 0.5);
}

.next-piece-box {
    background: linear-gradient(180deg, var(--bg-panel) 0%, #1a1a25 100%);
    padding: 15px;
    border-radius: 12px;
    border: 2px solid rgba(0, 245, 255, 0.3);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.next-piece-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 40%,
        rgba(0, 245, 255, 0.1) 50%,
        transparent 60%
    );
    animation: scanner 3s linear infinite;
}

@keyframes scanner {
    0% { transform: translateX(-100%) rotate(45deg); }
    100% { transform: translateX(100%) rotate(45deg); }
}

.next-piece-box::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 10px;
    box-shadow: inset 0 0 20px rgba(0, 245, 255, 0.1);
    pointer-events: none;
}

#nextCanvas {
    display: block;
    margin: 10px auto;
    background: transparent;
    position: relative;
    z-index: 1;
}

.controls-info {
    background: var(--bg-panel);
    padding: 15px;
    border-radius: 10px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.control {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
}

.control:last-child {
    margin-bottom: 0;
}

.key {
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
    padding: 4px 8px;
    border-radius: 4px;
    font-weight: 700;
    color: #000;
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    backdrop-filter: blur(10px);
    opacity: 1;
    transition: opacity 0.3s ease;
}

.overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal {
    background: linear-gradient(180deg, var(--bg-panel) 0%, #1a1a2e 100%);
    padding: 40px 50px;
    border-radius: 20px;
    border: 3px solid var(--neon-cyan);
    box-shadow: 
        0 0 30px rgba(0, 245, 255, 0.4),
        0 0 60px rgba(0, 245, 255, 0.2),
        inset 0 0 30px rgba(0, 245, 255, 0.05);
    text-align: center;
    animation: modalPulse 2s infinite;
}

@keyframes modalPulse {
    0%, 100% { 
        box-shadow: 
            0 0 30px rgba(0, 245, 255, 0.4),
            0 0 60px rgba(0, 245, 255, 0.2);
    }
    50% { 
        box-shadow: 
            0 0 30px rgba(255, 0, 255, 0.4),
            0 0 60px rgba(255, 0, 255, 0.2);
    }
}

.title {
    font-size: 36px;
    font-weight: 900;
    color: var(--neon-cyan);
    text-shadow: var(--glow-cyan);
    margin-bottom: 10px;
    letter-spacing: 4px;
}

.title .max {
    color: var(--neon-magenta);
    text-shadow: var(--glow-magenta);
}

.subtitle {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 30px;
    letter-spacing: 1px;
}

.btn {
    display: block;
    width: 100%;
    padding: 15px 30px;
    margin: 10px 0;
    font-family: 'Orbitron', sans-serif;
    font-size: 16px;
    font-weight: 700;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.start-btn {
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
    color: #000;
    box-shadow: 
        0 0 20px rgba(0, 245, 255, 0.5),
        0 4px 15px rgba(0, 0, 0, 0.3);
}

.start-btn:hover {
    transform: scale(1.05) translateY(-2px);
    box-shadow: 
        0 0 30px rgba(0, 245, 255, 0.8),
        0 0 60px rgba(255, 0, 255, 0.4),
        0 6px 20px rgba(0, 0, 0, 0.4);
}

.sound-btn {
    background: transparent;
    border: 2px solid var(--neon-green);
    color: var(--neon-green);
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
}

.sound-btn:hover {
    background: var(--neon-green);
    color: #000;
}

.game-over-title {
    color: var(--neon-red);
    text-shadow: 0 0 10px #ff0055, 0 0 20px #ff0055, 0 0 40px #ff0055;
}

.final-score {
    margin: 20px 0;
    padding: 20px;
    background: rgba(255, 0, 85, 0.2);
    border-radius: 10px;
    border: 2px solid var(--neon-red);
}

.final-score .stat-value {
    font-size: 40px;
    color: var(--neon-red);
    text-shadow: 0 0 20px rgba(255, 0, 85, 0.8);
}

.final-stats {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
}

.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 50;
}

.particle {
    position: absolute;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    animation: particleExplode 0.8s ease-out forwards;
}

@keyframes particleExplode {
    0% {
        opacity: 1;
        transform: scale(1) translate(0, 0);
    }
    100% {
        opacity: 0;
        transform: scale(0) translate(var(--tx), var(--ty));
    }
}

.line-flash {
    position: absolute;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(0, 245, 255, 0.8) 20%, 
        rgba(255, 255, 255, 1) 50%, 
        rgba(0, 245, 255, 0.8) 80%, 
        transparent 100%
    );
    animation: lineFlash 0.5s ease-out forwards;
    pointer-events: none;
}

@keyframes lineFlash {
    0% {
        opacity: 1;
        transform: scaleX(0);
    }
    50% {
        opacity: 1;
        transform: scaleX(1);
    }
    100% {
        opacity: 0;
        transform: scaleX(1.2);
    }
}

@keyframes lineClear {
    0% { transform: scaleX(1); opacity: 1; }
    50% { transform: scaleX(1.1); opacity: 0.8; }
    100% { transform: scaleX(0); opacity: 0; }
}

.line-clear-animation {
    animation: lineClear 0.5s ease-out;
}