/* CSS chính cho KUBETVIP - Game LMHT */
body {
    margin: 0;
    padding: 0;
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    color: white;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header styles */
header {
    text-align: center;
    padding: 40px 0;
}

h1 {
    color: #ffd700;
    font-size: 3rem;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
    margin-bottom: 10px;
}

/* Game area styles */
.game-area {
    background: rgba(0, 0, 0, 0.5);
    border-radius: 15px;
    padding: 30px;
    margin: 20px 0;
    border: 2px solid #ffd700;
}

/* Champion selection grid */
.champion-select {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin: 20px 0;
}

.champion {
    background: #2a2a4e;
    padding: 15px;
    border-radius: 10px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid #444;
}

.champion:hover {
    transform: scale(1.05);
    background: #3a3a5e;
    border-color: #ffd700;
}

.champion h3 {
    color: #ffd700;
    margin: 0 0 5px 0;
    font-size: 1.2rem;
}

.champion p {
    color: #ccc;
    margin: 0;
    font-size: 0.9rem;
}

/* Selected champion display */
#selected-champion {
    text-align: center;
    padding: 20px;
    background: rgba(255, 215, 0, 0.1);
    border-radius: 10px;
    margin: 20px 0;
    border: 1px solid #ffd700;
}

/* Buttons */
.btn {
    background: #ffd700;
    color: #1a1a2e;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 10px;
}

.btn:hover {
    background: #ffed4a;
    transform: translateY(-2px);
}

/* 📱 RESPONSIVE CHO MOBILE */
@media (max-width: 768px) {
    body {
        font-size: 14px;
        padding: 10px;
    }
    
    .container {
        padding: 10px;
        width: 100%;
        margin: 0;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    header {
        padding: 20px 0;
    }
    
    .game-area {
        padding: 20px;
        margin: 15px 0;
    }
    
    .champion-select {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .champion {
        padding: 12px;
    }
    
    .champion h3 {
        font-size: 1rem;
    }
}

/* 📱 SMALL MOBILE */
@media (max-width: 480px) {
    body {
        padding: 5px;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    .champion-select {
        grid-template-columns: 1fr;
    }
    
    .game-area {
        padding: 15px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}

/* Animation for game elements */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.champion {
    animation: fadeIn 0.5s ease forwards;
}

/* Loading animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #ffffff;
    border-radius: 50%;
    border-top-color: #ffd700;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}