/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 40px;
}

.title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.title i {
    color: #667eea;
    font-size: 2.2rem;
}

.subtitle {
    font-size: 1.1rem;
    color: #718096;
    font-weight: 400;
}

/* Game Stats */
.game-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 40px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.stat-card {
    background: white;
    border-radius: 16px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
}

.stat-content {
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 0.875rem;
    color: #718096;
    font-weight: 500;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2d3748;
}

/* Game Board */
.game-board {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 40px;
    aspect-ratio: 1;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 40px;
}

.game-tile {
    aspect-ratio: 1;
    border-radius: 16px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.game-tile:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.tile-face {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.tile-back {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    font-size: 2rem;
    transform: rotateY(0deg);
}

.tile-front {
    transform: rotateY(-180deg);
    overflow: hidden;
}

.tile-front img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 16px;
}

.game-tile.flipped .tile-back {
    transform: rotateY(180deg);
}

.game-tile.flipped .tile-front {
    transform: rotateY(0deg);
}

.game-tile.matched {
    opacity: 0.8;
    transform: scale(0.95);
}

.game-tile.matched::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(72, 187, 120, 0.2);
    border: 3px solid #48bb78;
    border-radius: 16px;
    z-index: 1;
}

/* Game Controls */
.game-controls {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 24px;
    border-radius: 12px;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 140px;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: white;
    color: #4a5568;
    border: 2px solid #e2e8f0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    border-color: #cbd5e0;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal-overlay.show {
    display: flex;
}

.modal {
    background: white;
    border-radius: 24px;
    padding: 40px;
    max-width: 400px;
    width: 90%;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    transform: scale(0.8);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-overlay.show .modal {
    transform: scale(1);
    opacity: 1;
}

.modal-header {
    margin-bottom: 24px;
}

.trophy-icon {
    font-size: 4rem;
    color: #fbbf24;
    margin-bottom: 16px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

.modal h2 {
    font-size: 2rem;
    color: #2d3748;
    font-weight: 700;
}

.modal-body {
    margin-bottom: 32px;
}

.modal-body p {
    font-size: 1.1rem;
    color: #718096;
    margin-bottom: 24px;
}

.victory-stats {
    display: flex;
    justify-content: center;
    gap: 20px;
}

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

.victory-label {
    font-size: 0.875rem;
    color: #718096;
    font-weight: 500;
    margin-bottom: 4px;
}

.victory-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2d3748;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 20px;
        margin: 10px;
    }
    
    .title {
        font-size: 2rem;
    }
    
    .game-stats {
        grid-template-columns: 1fr;
    }
    
    .game-board {
        gap: 12px;
    }
    
    .game-controls {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 200px;
    }
}

@media (max-width: 480px) {
    .game-board {
        gap: 8px;
    }
    
    .stat-card {
        padding: 16px;
    }
    
    .stat-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .stat-value {
        font-size: 1.25rem;
    }
}