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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #ff69b4 0%, #ff1493 50%, #ff69b4 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #333;
}

.container {
    width: 100%;
    max-width: 800px;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 30px;
    background: rgba(255, 255, 255, 0.95);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(255, 20, 147, 0.2);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 105, 180, 0.3);
}

h1 {
    color: #ff1493;
    margin-bottom: 20px;
    font-size: 2.5rem;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(255, 20, 147, 0.3);
}

.game-info {
    display: flex;
    justify-content: space-around;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.game-info > div {
    background: linear-gradient(135deg, #ff69b4, #ff1493);
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(255, 20, 147, 0.3);
    min-width: 120px;
}

#restart-btn {
    background: linear-gradient(135deg, #ff69b4, #ff1493);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 20, 147, 0.3);
}

#restart-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.game-board {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(255, 20, 147, 0.2);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 105, 180, 0.3);
}

.card {
    aspect-ratio: 1;
    background: linear-gradient(135deg, #ff69b4, #ff1493);
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
    color: white;
    font-weight: bold;
    transition: all 0.3s ease;
    transform-style: preserve-3d;
    position: relative;
    box-shadow: 0 4px 15px rgba(255, 20, 147, 0.3);
}

.card:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.card.flipped {
    transform: rotateY(180deg);
    background: linear-gradient(135deg, #ff1493, #c71585);
}

.card.matched {
    background: linear-gradient(135deg, #ff69b4, #ff1493);
    transform: rotateY(180deg);
    animation: pulse 0.6s ease-in-out;
}

@keyframes pulse {
    0%, 100% { transform: rotateY(180deg) scale(1); }
    50% { transform: rotateY(180deg) scale(1.1); }
}

.card-front,
.card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 10px;
}

.card-front {
    background: linear-gradient(135deg, #ff69b4, #ff1493);
    transform: rotateY(0deg);
}

.card-back {
    background: linear-gradient(135deg, #ff1493, #c71585);
    transform: rotateY(180deg);
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    padding: 40px;
    border-radius: 15px;
    text-align: center;
    max-width: 400px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-content h2 {
    color: #ff1493;
    margin-bottom: 20px;
    font-size: 2rem;
}

.modal-content p {
    margin-bottom: 10px;
    font-size: 1.1rem;
    color: #666;
}

#play-again-btn {
    background: linear-gradient(135deg, #ff69b4, #ff1493);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: 20px;
    transition: all 0.3s ease;
}

#play-again-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* Responsividade */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .game-info {
        flex-direction: column;
        align-items: center;
    }
    
    .game-info > div {
        min-width: 150px;
    }
    
    .game-board {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
        padding: 15px;
    }
    
    .card {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .game-board {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .card {
        font-size: 1.2rem;
    }
    
    .modal-content {
        padding: 20px;
    }
}