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

body {
    font-family: Arial, sans-serif;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: #fff;
    overflow: hidden;
}

.container {
    text-align: center;
    padding: 5px;
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
    gap: 5px;
    align-items: center;
    justify-content: space-between;
}

h1 {
    margin: 0;
    font-size: 1.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.players-info {
    display: flex;
    justify-content: space-around;
    padding: 5px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    max-width: 500px;
    margin: 0 auto;
}

.player {
    padding: 5px 10px;
    border-radius: 6px;
    transition: all 0.3s ease;
    min-width: 120px;
}

.player.active {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

.player h2 {
    margin: 0;
    font-size: 1.1rem;
}

.score {
    font-size: 0.9rem;
    margin: 2px 0;
}

.status {
    font-size: 0.8rem;
    color: #ccc;
    padding: 3px;
    border-radius: 4px;
}

.status.active {
    color: #4CAF50;
    font-weight: bold;
    background: rgba(76, 175, 80, 0.1);
}

.game-info {
    display: flex;
    justify-content: center;
    gap: 15px;
    font-size: 0.9rem;
    margin: 0;
}

.controls {
    margin: 0;
    display: flex;
    justify-content: center;
    gap: 10px;
}

button, select {
    padding: 4px 8px;
    font-size: 0.9rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    background-color: #fff;
    color: #1e3c72;
    transition: transform 0.2s, background-color 0.2s;
}

button:hover {
    transform: scale(1.05);
    background-color: #f0f0f0;
}

.game-board {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
    margin: 0 auto;
    width: 100%;
    max-width: 500px;
    perspective: 1000px;
    padding: 5px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    place-items: center;
    flex: 1;
    min-height: 0;
    max-height: none;
}

.card {
    aspect-ratio: 3/4;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.6s;
    cursor: pointer;
    width: 100%;
    max-width: 90px;
    height: 100%;
    max-height: 120px;
}

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

.card-front, .card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 6px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.3rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.card-front {
    background-color: #2a5298;
    transform: rotateY(180deg);
}

.card-back {
    background: linear-gradient(45deg, #1e3c72, #2a5298);
}

.win-message {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(255, 255, 255, 0.95);
    padding: 20px;
    border-radius: 8px;
    color: #1e3c72;
    text-align: center;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
}

.win-message h2 {
    margin-bottom: 10px;
    font-size: 1.5rem;
}

.win-message p {
    margin-bottom: 8px;
    font-size: 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 3px;
        gap: 3px;
    }

    h1 {
        font-size: 1.2rem;
    }

    .game-board {
        grid-template-columns: repeat(4, 1fr);
        gap: 3px;
        max-width: 400px;
        padding: 3px;
    }

    .card {
        max-width: 70px;
        max-height: 93px;
    }

    .card-front, .card-back {
        font-size: 1.1rem;
    }

    .players-info {
        padding: 3px;
    }

    .player {
        min-width: 100px;
        padding: 3px 6px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 2px;
        gap: 2px;
    }

    h1 {
        font-size: 1rem;
    }

    .game-board {
        grid-template-columns: repeat(4, 1fr);
        gap: 2px;
        max-width: 300px;
        padding: 2px;
    }

    .card {
        max-width: 50px;
        max-height: 67px;
    }

    .card-front, .card-back {
        font-size: 0.9rem;
    }

    .controls {
        gap: 5px;
    }

    button, select {
        padding: 3px 6px;
        font-size: 0.8rem;
    }
}