:root {
    --bg-color: #191c24;
    --sidebar-bg: #15171e;
    --text-color: #e0e0e0;
    --accent-color: #ffb300;
    --card-bg: #22252f;
    --border-color: #2d303a;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* Layout */
.layout {
    display: grid;
    grid-template-columns: 230px 1fr;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    background-color: var(--sidebar-bg);
    padding: 20px;
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    margin-bottom: 30px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    font-size: 24px;
}

.logo-text {
    font-size: 20px;
    font-weight: bold;
    color: var(--accent-color);
}

.category-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex-grow: 1;
}

.category-item {
    text-decoration: none;
    color: var(--text-color);
    padding: 10px 15px;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.category-item:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.category-item.active {
    background-color: var(--accent-color);
    color: #000;
    font-weight: 500;
}

.sidebar-footer {
    margin-top: 20px;
    font-size: 12px;
    color: #888;
}

.sidebar-footer a {
    color: var(--accent-color);
    text-decoration: none;
}

/* Main Content */
.main-content {
    padding: 30px;
}

.main-header {
    margin-bottom: 30px;
}

.main-header h1 {
    font-size: 28px;
    margin-bottom: 10px;
    color: var(--accent-color);
}

.main-desc {
    color: #aaa;
    max-width: 800px;
}

/* Game Grid */
.game-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

/* Game Card */
.game-card {
    background-color: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border-color);
}

.game-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.game-cover-container {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 75%; /* 4:3 比例 */
    overflow: hidden;
}

.game-cover {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.game-card:hover .game-cover {
    transform: scale(1.05);
}

.game-info {
    padding: 15px;
}

.game-info h3 {
    margin-bottom: 10px;
    font-size: 16px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.game-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-bottom: 10px;
}

.game-tags span {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 12px;
}

.game-category {
    margin-bottom: 10px;
}

.game-category span {
    background-color: var(--accent-color);
    color: #000;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.play-btn {
    display: block;
    width: 100%;
    padding: 8px;
    text-align: center;
    background-color: var(--accent-color);
    color: #000;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 500;
    transition: background-color 0.2s ease;
}

.play-btn:hover {
    background-color: #ffc233;
}

/* Footer */
.main-footer {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: #888;
    font-size: 12px;
}

.main-footer a {
    color: var(--accent-color);
    text-decoration: none;
}

/* Loading Indicator */
#loading-indicator {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px;
    color: var(--accent-color);
    font-size: 18px;
}

/* Responsive */
@media (max-width: 768px) {
    .layout {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: static;
        height: auto;
        padding-bottom: 10px;
    }
    
    .category-list {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 10px;
    }
    
    .category-item {
        white-space: nowrap;
    }
    
    .main-content {
        padding: 20px;
    }
    
    .game-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
}

/* Game Detail Page Styles */
.game-detail {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-bottom: 40px;
    background-color: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    padding: 25px;
}

@media (min-width: 992px) {
    .game-detail {
        flex-direction: row;
    }
    
    .game-preview {
        flex: 0 0 50%;
        max-width: 50%;
    }
    
    .game-info-detail {
        flex: 0 0 50%;
        max-width: 50%;
    }
}

.game-preview {
    border-radius: 10px;
    overflow: hidden;
}

.game-detail-image {
    width: 100%;
    border-radius: 8px;
    object-fit: cover;
}

.game-info-detail {
    display: flex;
    flex-direction: column;
}

.game-info-detail h2 {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--accent-color);
}

.detail-tags {
    margin-bottom: 20px;
}

.game-description, .game-instructions {
    background-color: rgba(0, 0, 0, 0.2);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.game-description h3, .game-instructions h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--accent-color);
}

.detail-play {
    margin-top: auto;
    padding: 12px;
    font-size: 18px;
}

/* Game iFrame Container */
.game-iframe {
    background-color: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    padding: 25px;
}

.game-iframe h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: var(--accent-color);
    text-align: center;
}

.iframe-container {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%; /* 16:9 比例 */
    overflow: hidden;
    border-radius: 8px;
}

.iframe-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* 响应式设计调整 */
@media (max-width: 768px) {
    .game-detail {
        padding: 15px;
    }
    
    .game-iframe {
        padding: 15px;
    }
    
    .iframe-container {
        padding-bottom: 75%; /* 移动设备上使用4:3比例 */
    }
}