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

html {
    height: 100%;
    width: 100%;
}

body {
    font-family: "Trebuchet MS", Arial, sans-serif;
    background-color: #faf7ff;
    min-height: 100vh;
    position: relative;
    color: #2d1b4e;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
}

/* Background tương tự device */
.background {
    position: fixed;
    overflow: hidden;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    display: block;
    opacity: 0.8;
    background: linear-gradient(137deg, #e8d5ff 0%, #faf7ff 100%);
    z-index: -1;
}

.square {
    position: absolute;
    display: block;
    width: 400px;
    height: 400px;
    border-radius: 50px;
    rotate: 331deg;
    opacity: 0.15;
    background-color: #fff;
}

.square-0 {
    left: 100%;
    top: 30%;
    margin-left: -200px;
}

.square-1 {
    left: 60%;
    top: 0%;
    margin-top: -300px;
}

.square-2 {
    width: 500px;
    height: 500px;
    top: 40%;
    margin-left: -300px;
}

/* Header */
.header {
    text-align: center;
    padding: 60px 20px 40px;
    position: relative;
    z-index: 10;
}

.header-title {
    font-size: 3rem;
    color: #6c4ab6;
    margin-bottom: 10px;
    text-shadow: 0 2px 10px rgba(108, 74, 182, 0.3);
    font-weight: bold;
}

.header-subtitle {
    font-size: 1.2rem;
    color: #8b5fbf;
    text-shadow: 0 1px 5px rgba(139, 95, 191, 0.2);
}

/* Main content */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px 60px;
    position: relative;
    z-index: 10;
    flex: 1;
    min-height: 400px;
}

/* Filters section */
.filters-section {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 40px;
    box-shadow: 0 10px 30px rgba(108, 74, 182, 0.15);
    backdrop-filter: blur(10px);
}

.search-container {
    position: relative;
    margin-bottom: 25px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.search-input {
    width: 100%;
    padding: 15px 50px 15px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 25px;
    font-size: 16px;
    outline: none;
    transition: all 0.3s ease;
    background: #fff;
}

.search-input:focus {
    border-color: #8b5fbf;
    box-shadow: 0 0 0 3px rgba(139, 95, 191, 0.15);
}

.search-icon {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 18px;
    color: #8b5fbf;
    pointer-events: none;
}

.category-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.filter-btn {
    padding: 12px 24px;
    border: 2px solid rgba(139, 95, 191, 0.4);
    background: rgba(255, 255, 255, 0.7);
    border-radius: 25px;
    color: #6c4ab6;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-btn:hover {
    background: rgba(139, 95, 191, 0.15);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: #8b5fbf;
    color: #fff;
    border-color: #8b5fbf;
    box-shadow: 0 5px 15px rgba(139, 95, 191, 0.4);
}

/* Games grid */
.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.game-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 2px solid transparent;
    backdrop-filter: blur(10px);
}

.game-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(139, 95, 191, 0.25);
    border-color: rgba(139, 95, 191, 0.4);
}

.game-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #f0f0f0;
}

.game-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background: linear-gradient(135deg, #8b5fbf, #d4b3ff);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 24px;
    margin-right: 15px;
    flex-shrink: 0;
}

.game-info h3 {
    font-size: 1.4rem;
    color: #2d1b4e;
    margin-bottom: 5px;
    font-weight: bold;
}

.game-category {
    display: inline-block;
    background: rgba(139, 95, 191, 0.15);
    color: #6c4ab6;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.game-versions {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 10px;
}

.version-item {
    padding: 10px 15px;
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    color: #495057;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    font-size: 14px;
    text-transform: uppercase;
    cursor: pointer;
    user-select: none;
}

.version-item:hover {
    background: #8b5fbf;
    color: #fff;
    border-color: #8b5fbf;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(139, 95, 191, 0.4);
}

/* Loading */
.loading {
    text-align: center;
    padding: 60px 20px;
    color: #8b5fbf;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(139, 95, 191, 0.15);
    border-left: 4px solid #8b5fbf;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* No results */
.no-results {
    text-align: center;
    padding: 60px 20px;
    color: #666;
}

.no-results-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.no-results h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #2d1b4e;
}

/* Footer */
.footer {
    background: rgba(255, 255, 255, 0.9);
    text-align: center;
    padding: 30px 20px;
    margin-top: auto;
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 10;
}

.footer-content p {
    color: #666;
    font-size: 14px;
}

.footer-content a {
    color: #8b5fbf;
    text-decoration: none;
    font-weight: 600;
}

.footer-content a:hover {
    text-decoration: underline;
}

/* Options Modal */
.options-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.options-modal.show {
    opacity: 1;
}

.modal-content {
    background: #fff;
    border-radius: 20px;
    padding: 0;
    max-width: 400px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: scale(0.9);
    transition: transform 0.3s ease;
    overflow: hidden;
}

.options-modal.show .modal-content {
    transform: scale(1);
}

.modal-header {
    background: linear-gradient(135deg, #8b5fbf, #d4b3ff);
    color: #fff;
    padding: 20px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: #fff;
    font-size: 28px;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.3s ease;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.modal-body {
    padding: 30px 25px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.option-btn {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    border: 2px solid #e9ecef;
    border-radius: 15px;
    background: #fff;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
    width: 100%;
}

.option-btn:hover {
    border-color: #8b5fbf;
    background: rgba(139, 95, 191, 0.05);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(139, 95, 191, 0.2);
}

.option-icon {
    font-size: 32px;
    margin-right: 15px;
    flex-shrink: 0;
}

.option-text {
    flex: 1;
}

.option-text strong {
    display: block;
    font-size: 16px;
    color: #2d1b4e;
    margin-bottom: 4px;
}

.option-text small {
    color: #666;
    font-size: 13px;
}

/* Mobile specific styles */
@media (max-width: 480px) {
    .modal-content {
        width: 95%;
        margin: 20px;
    }
    
    .modal-header {
        padding: 15px 20px;
    }
    
    .modal-header h3 {
        font-size: 1.1rem;
    }
    
    .modal-body {
        padding: 20px;
        gap: 12px;
    }
    
    .option-btn {
        padding: 12px 15px;
    }
    
    .option-icon {
        font-size: 28px;
        margin-right: 12px;
    }
    
    .option-text strong {
        font-size: 15px;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .header-title {
        font-size: 2.5rem;
    }
    
    .header-subtitle {
        font-size: 1rem;
    }
    
    .filters-section {
        padding: 20px;
        margin-bottom: 30px;
    }
    
    .games-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .game-card {
        padding: 20px;
    }
    
    .category-filters {
        gap: 8px;
    }
    
    .filter-btn {
        padding: 10px 16px;
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 40px 15px 30px;
    }
    
    .header-title {
        font-size: 2rem;
    }
    
    .main-content {
        padding: 0 15px 30px;
    }
    
    .game-header {
        flex-direction: column;
        text-align: center;
    }
    
    .game-icon {
        margin-right: 0;
        margin-bottom: 10px;
    }
    
    .game-versions {
        grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
        gap: 8px;
    }
    
    .version-item {
        padding: 8px 12px;
        font-size: 12px;
    }
}