/* ===== CSS Variables ===== */
:root {
    --primary: #667eea;
    --primary-dark: #5a67d8;
    --primary-light: #7c8ff5;
    --secondary: #764ba2;
    --accent: #f093fb;
    --success: #48bb78;
    --warning: #ed8936;
    --danger: #f56565;
    --info: #4299e1;
    
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: rgba(30, 41, 59, 0.95);
    --bg-hover: rgba(102, 126, 234, 0.15);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --border-color: rgba(148, 163, 184, 0.15);
    --border-light: rgba(148, 163, 184, 0.3);
    
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4);
    
    --neon-glow: 0 0 10px rgba(102, 126, 234, 0.5),
                 0 0 20px rgba(102, 126, 234, 0.3),
                 0 0 30px rgba(102, 126, 234, 0.2);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --bg-primary: #f0f4f8;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.95);
    --bg-hover: rgba(102, 126, 234, 0.08);
    
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --border-color: rgba(148, 163, 184, 0.3);
    --border-light: rgba(148, 163, 184, 0.5);
    
    --neon-glow: 0 0 10px rgba(102, 126, 234, 0.3),
                 0 0 20px rgba(102, 126, 234, 0.2);
}

/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    transition: background 0.3s ease, color 0.3s ease;
}

.arcade-container {
    min-height: 100vh;
    position: relative;
}

/* ===== Main Menu ===== */
.main-menu {
    min-height: 100vh;
    padding: 20px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    position: relative;
    overflow: hidden;
}

.main-menu::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(102, 126, 234, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(118, 75, 162, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(240, 147, 251, 0.2) 0%, transparent 40%);
    pointer-events: none;
}

[data-theme="light"] .main-menu {
    background: linear-gradient(135deg, #e8f4f8 0%, #f0f4f8 50%, #f8fafc 100%);
}

/* Arcade Header */
.arcade-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    margin-bottom: 30px;
    position: relative;
    z-index: 10;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo i {
    font-size: 3rem;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 10px rgba(102, 126, 234, 0.5));
}

.logo h1 {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-actions {
    display: flex;
    gap: 15px;
    align-items: center;
}

.theme-toggle, .leaderboard-btn {
    padding: 12px 20px;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    background: var(--bg-hover);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
}

.theme-toggle:hover, .leaderboard-btn:hover {
    background: var(--bg-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.leaderboard-btn i {
    color: #fbbf24;
}

/* Welcome Section */
.welcome-section {
    text-align: center;
    margin-bottom: 40px;
    position: relative;
    z-index: 10;
}

.welcome-section h2 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--text-primary), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-section p {
    color: var(--text-secondary);
    font-size: 1.2rem;
}

/* Games Grid */
.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    max-width: 1400px;
    margin: 0 auto 40px;
    position: relative;
    z-index: 10;
}

.game-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 30px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.game-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.game-card:hover::before {
    transform: scaleX(1);
}

.game-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--neon-glow), var(--shadow-xl);
    border-color: var(--primary);
}

.game-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: var(--shadow-lg);
}

.snake-icon { background: linear-gradient(135deg, #22c55e, #16a34a); }
.ludo-icon { background: linear-gradient(135deg, #f56565, #c53030); }
.tictactoe-icon { background: linear-gradient(135deg, #4299e1, #2b6cb0); }
.tetris-icon { background: linear-gradient(135deg, #f093fb, #c084fc); }
.tetris-icon { background: linear-gradient(135deg, #f093fb, #c084fc); }
.memory-icon { background: linear-gradient(135deg, #f56565, #dc2626); }
.game2048-icon { background: linear-gradient(135deg, #fbbf24, #d97706); }
.brick-icon { background: linear-gradient(135deg, #3b82f6, #2563eb); }
.space-icon { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }

.game-card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.game-card p {
    color: var(--text-secondary);
    margin-bottom: 15px;
    font-size: 0.95rem;
}

.game-stats {
    margin-bottom: 20px;
    padding: 10px;
    background: var(--bg-hover);
    border-radius: var(--radius-md);
}

.high-score {
    color: #fbbf24;
    font-size: 0.9rem;
}

.high-score strong {
    font-size: 1.2rem;
}

.play-btn {
    width: 100%;
    padding: 14px 24px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.play-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

/* Arcade Footer */
.arcade-footer {
    text-align: center;
    padding: 30px;
    color: var(--text-muted);
    position: relative;
    z-index: 10;
}

/* ===== Game Wrapper ===== */
.game-wrapper {
    min-height: 100vh;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
}

.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 25px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.back-btn {
    padding: 10px 20px;
    background: var(--bg-hover);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.back-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.game-info {
    display: flex;
    align-items: center;
    gap: 30px;
}

.game-info h2 {
    font-size: 1.5rem;
}

.score-display {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 20px;
    background: var(--bg-hover);
    border-radius: var(--radius-md);
    font-size: 1.2rem;
}

.score-label {
    color: var(--text-secondary);
}

#currentScore {
    color: var(--success);
    font-size: 1.5rem;
}

.game-controls {
    display: flex;
    gap: 10px;
}

.control-btn {
    width: 45px;
    height: 45px;
    border-radius: var(--radius-md);
    background: var(--bg-hover);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.control-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* Game Area */
.game-area {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
}

.game-canvas {
    position: relative;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    border: 2px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

/* Game Overlay */
.game-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    backdrop-filter: blur(5px);
}

.overlay-content {
    text-align: center;
    padding: 40px;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    max-width: 400px;
}

.overlay-content h3 {
    font-size: 2rem;
    margin-bottom: 15px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.overlay-content p {
    color: var(--text-secondary);
    margin-bottom: 25px;
}

.start-game-btn {
    padding: 15px 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
    border-radius: var(--radius-xl);
    color: white;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
}

.start-game-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--neon-glow);
}

/* ===== Snake Game ===== */
#snakeCanvas {
    display: block;
}

/* ===== Tetris Game ===== */
.tetris-container {
    display: flex;
    gap: 20px;
    padding: 20px;
}

.tetris-sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.tetris-panel {
    background: var(--bg-hover);
    padding: 15px;
    border-radius: var(--radius-md);
    text-align: center;
    min-width: 100px;
}

.tetris-panel h4 {
    color: var(--text-muted);
    margin-bottom: 10px;
    font-size: 0.9rem;
}

.tetris-panel span {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

#tetrisNext {
    margin: 0 auto;
    display: block;
}

/* ===== Memory Game ===== */
.memory-header {
    display: flex;
    justify-content: center;
    gap: 40px;
    padding: 20px;
    background: var(--bg-hover);
    margin-bottom: 20px;
}

.memory-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.memory-stat span {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.memory-stat strong {
    font-size: 1.5rem;
    color: var(--primary);
}

.memory-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    padding: 20px;
    max-width: 500px;
    margin: 0 auto;
}

.memory-card {
    aspect-ratio: 1;
    perspective: 1000px;
    cursor: pointer;
}

.memory-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.5s;
    transform-style: preserve-3d;
}

.memory-card.flipped .memory-card-inner {
    transform: rotateY(180deg);
}

.memory-card.matched .memory-card-inner {
    transform: rotateY(180deg);
}

.memory-card-front,
.memory-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    box-shadow: var(--shadow);
}

.memory-card-front {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: 2px solid var(--border-color);
}

.memory-card-front::after {
    content: '?';
    color: white;
    font-size: 2rem;
    font-weight: 700;
}

.memory-card-back {
    background: var(--bg-secondary);
    transform: rotateY(180deg);
    border: 2px solid var(--primary);
}

.memory-card.matched .memory-card-back {
    background: rgba(72, 187, 120, 0.2);
    border-color: var(--success);
}

/* ===== 2048 Game ===== */
.game2048-container {
    padding: 20px;
}

.game2048-header {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
}

.score-box {
    background: var(--bg-hover);
    padding: 10px 25px;
    border-radius: var(--radius-md);
    text-align: center;
    min-width: 100px;
}

.score-box span {
    display: block;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.score-box strong {
    font-size: 1.5rem;
    color: var(--primary);
}

.game2048-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    background: var(--bg-hover);
    padding: 15px;
    border-radius: var(--radius-lg);
    max-width: 400px;
}

.game2048-cell {
    aspect-ratio: 1;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    transition: var(--transition);
}

.game2048-cell[data-value="2"] { background: #eee4da; color: #776e65; }
.game2048-cell[data-value="4"] { background: #ede0c8; color: #776e65; }
.game2048-cell[data-value="8"] { background: #f2b179; color: #f9f6f2; }
.game2048-cell[data-value="16"] { background: #f59563; color: #f9f6f2; }
.game2048-cell[data-value="32"] { background: #f67c5f; color: #f9f6f2; }
.game2048-cell[data-value="64"] { background: #f65e3b; color: #f9f6f2; }
.game2048-cell[data-value="128"] { background: #edcf72; color: #f9f6f2; }
.game2048-cell[data-value="256"] { background: #edcc61; color: #f9f6f2; }
.game2048-cell[data-value="512"] { background: #edc850; color: #f9f6f2; }
.game2048-cell[data-value="1024"] { background: #edc53f; color: #f9f6f2; }
.game2048-cell[data-value="2048"] { background: #edc22e; color: #f9f6f2; box-shadow: 0 0 20px rgba(237, 194, 46, 0.5); }

.game2048-cell.new {
    animation: pop 0.2s ease;
}

@keyframes pop {
    0% { transform: scale(0); }
    100% { transform: scale(1); }
}

/* ===== Brick Breaker ===== */
#brickCanvas {
    display: block;
}

/* ===== Ludo ===== */
.ludo-container {
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.ludo-board {
    width: 450px;
    height: 450px;
    background: #fff;
    border: 3px solid #333;
    border-radius: 8px;
    display: grid;
    grid-template-columns: repeat(15, 1fr);
    grid-template-rows: repeat(15, 1fr);
    gap: 0;
    position: relative;
}

/* Home Bases */
.ludo-home {
    border: 2px solid #333;
}

.ludo-home.red {
    grid-column: 1 / 7;
    grid-row: 1 / 7;
    background: #f56565;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ludo-home.green {
    grid-column: 10 / 16;
    grid-row: 1 / 7;
    background: #48bb78;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ludo-home.blue {
    grid-column: 1 / 7;
    grid-row: 10 / 16;
    background: #4299e1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ludo-home.yellow {
    grid-column: 10 / 16;
    grid-row: 10 / 16;
    background: #ecc94b;
    display: flex;
    align-items: center;
    justify-content: center;
}

.home-inner {
    width: 70%;
    height: 70%;
    background: #fff;
    border-radius: 8px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 10px;
    padding: 10px;
}

.home-position {
    background: rgba(0,0,0,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Center */
.ludo-center {
    grid-column: 7 / 10;
    grid-row: 7 / 10;
    background: conic-gradient(
      #48bb78 0deg 90deg,
      #ecc94b 90deg 180deg,
      #4299e1 180deg 270deg,
      #f56565 270deg 360deg
    );
    border: 2px solid #333;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

/* Cells */
.ludo-cell {
    border: 1px solid #333;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.ludo-cell.red { background: #f56565; }
.ludo-cell.green { background: #48bb78; }
.ludo-cell.yellow { background: #ecc94b; }
.ludo-cell.blue { background: #4299e1; }
.ludo-cell.safe { 
    background: #e2e8f0 !important;
}
.ludo-cell.safe::after {
    content: '⭐';
    position: absolute;
    font-size: 0.6rem;
    top: 2px;
    right: 2px;
}

/* Tokens */
.ludo-token {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 3px solid #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.4);
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    z-index: 10;
}

.ludo-token:hover {
    transform: scale(1.3);
    z-index: 20;
}

.ludo-token.red { 
    background: #f56565;
    box-shadow: 0 2px 5px rgba(245, 101, 101, 0.5);
}
.ludo-token.green { 
    background: #48bb78;
    box-shadow: 0 2px 5px rgba(72, 187, 120, 0.5);
}
.ludo-token.yellow { 
    background: #ecc94b;
    box-shadow: 0 2px 5px rgba(236, 201, 75, 0.5);
}
.ludo-token.blue { 
    background: #4299e1;
    box-shadow: 0 2px 5px rgba(66, 153, 225, 0.5);
}

.ludo-token.movable {
    animation: pulse-token 0.6s infinite;
    border: 3px solid #fff;
    box-shadow: 0 0 10px #fff, 0 0 20px currentColor;
}

@keyframes pulse-token {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.4); }
}

/* Multiple tokens in one cell */
.token-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 2px;
    justify-content: center;
    align-items: center;
}

/* ===== Tic Tac Toe ===== */
.tictactoe-container {
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.tictactoe-header {
    margin-bottom: 10px;
}

.player-indicator {
    padding: 10px 20px;
    background: var(--bg-hover);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1.2rem;
}

.tictactoe-board {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    background: var(--bg-hover);
    padding: 15px;
    border-radius: var(--radius-lg);
}

.ttt-cell {
    width: 80px;
    height: 80px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid var(--border-color);
}

.ttt-cell:hover {
    background: var(--bg-hover);
    transform: scale(1.05);
}

.ttt-cell.x {
    color: #4299e1;
}

.ttt-cell.o {
    color: #f56565;
}

.tictactoe-result {
    font-size: 1.5rem;
    font-weight: 700;
    padding: 15px 30px;
    background: var(--bg-hover);
    border-radius: var(--radius-md);
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tictactoe-result.win {
    background: linear-gradient(135deg, rgba(72, 187, 120, 0.2), rgba(72, 187, 120, 0.1));
    border: 2px solid var(--success);
}

.tictactoe-result.draw {
    background: linear-gradient(135deg, rgba(237, 137, 54, 0.2), rgba(237, 137, 54, 0.1));
    border: 2px solid var(--warning);
}

/* ===== Mobile Controls ===== */
.mobile-controls {
    display: none;
    padding: 20px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.dpad {
    display: grid;
    grid-template-columns: repeat(3, 60px);
    grid-template-rows: repeat(2, 60px);
    gap: 8px;
    justify-content: center;
    margin-bottom: 15px;
}

.dpad-btn {
    background: var(--bg-hover);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.dpad-btn:active {
    background: var(--primary);
    border-color: var(--primary);
}

.dpad-btn.up { grid-column: 2; grid-row: 1; }
.dpad-btn.left { grid-column: 1; grid-row: 2; }
.dpad-btn.right { grid-column: 3; grid-row: 2; }
.dpad-btn.down { grid-column: 2; grid-row: 2; }

.action-btn {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    margin: 0 auto;
    display: block;
    transition: var(--transition);
}

.action-btn:active {
    transform: scale(0.95);
}

/* ===== Modal ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 30px;
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.modal-header h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
}

.modal-close {
    background: var(--bg-hover);
    border: none;
    color: var(--text-secondary);
    width: 35px;
    height: 35px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--danger);
    color: white;
}

/* Leaderboard */
.leaderboard-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 8px 16px;
    background: var(--bg-hover);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.85rem;
}

.tab-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

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

.leaderboard-entry {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background: var(--bg-hover);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.leaderboard-entry:first-child {
    border-color: #fbbf24;
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.1), var(--bg-hover));
}

.leaderboard-rank {
    font-size: 1.5rem;
    font-weight: 700;
    width: 40px;
}

.leaderboard-rank:nth-child(1) { color: #fbbf24; }
.leaderboard-rank:nth-child(2) { color: #94a3b8; }
.leaderboard-rank:nth-child(3) { color: #b45309; }

.leaderboard-info {
    flex: 1;
}

.leaderboard-game {
    font-weight: 600;
    margin-bottom: 3px;
}

.leaderboard-date {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.leaderboard-score {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--success);
}

/* Game Over */
.gameover-content {
    text-align: center;
}

.gameover-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gameover-content h2 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.final-score {
    font-size: 1.5rem;
    margin-bottom: 20px;
    padding: 20px;
    background: var(--bg-hover);
    border-radius: var(--radius-lg);
}

.final-score strong {
    display: block;
    font-size: 3rem;
    color: var(--success);
    margin-top: 10px;
}

.highscore-check {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 15px;
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.2), rgba(251, 191, 36, 0.1));
    border: 2px solid #fbbf24;
    border-radius: var(--radius-md);
    margin-bottom: 25px;
    color: #fbbf24;
    font-weight: 600;
    animation: pulse 1s infinite;
}

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

.gameover-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.btn-primary, .btn-secondary {
    padding: 15px 30px;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg-hover);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--bg-primary);
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .arcade-header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .logo {
        justify-content: center;
    }
    
    .logo h1 {
        font-size: 2rem;
    }
    
    .header-actions {
        justify-content: center;
    }
    
    .welcome-section h2 {
        font-size: 1.8rem;
    }
    
    .games-grid {
        grid-template-columns: 1fr;
    }
    
    .game-header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .game-info {
        flex-direction: column;
        gap: 10px;
    }
    
    .tetris-container {
        flex-direction: column;
        align-items: center;
    }
    
    .memory-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 10px;
    }
    
    .mobile-controls {
        display: block;
    }
    
    .game2048-grid {
        gap: 8px;
        padding: 10px;
    }
    
    .game2048-cell {
        font-size: 1.5rem;
    }
}

/* ===== Animations ===== */
@keyframes glow {
    0%, 100% { box-shadow: var(--neon-glow); }
    50% { box-shadow: 0 0 20px rgba(102, 126, 234, 0.8), 0 0 40px rgba(102, 126, 234, 0.4); }
}

.game-card:hover .game-icon {
    animation: glow 1.5s ease infinite;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}