/* 全局样式 */
:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    
    --border-radius: 0.375rem;
    --border-radius-lg: 0.5rem;
    --transition: all 0.3s ease;
}

/* 全局重置 */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* 导航栏样式 */
.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}

.navbar-brand i {
    margin-right: 0.5rem;
    color: #ffc107;
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: var(--transition);
}

.navbar-nav .nav-link:hover {
    color: #ffc107 !important;
}

/* 英雄区域 */
.hero-section {
    background: var(--gradient-primary);
    min-height: 70vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="gaming" x="0" y="0" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23gaming)"/></svg>');
    opacity: 0.3;
}

.hero-animation {
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* 游戏卡片样式 */
.game-card {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
    overflow: hidden;
    height: 100%;
    border: none;
}

.game-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.game-card .card-img-top {
    height: 200px;
    object-fit: cover;
    background: linear-gradient(45deg, #f0f0f0, #e0e0e0);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: #ccc;
}

.game-card .card-body {
    padding: 1.5rem;
}

.game-card .card-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.game-card .card-text {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.game-stats {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.85rem;
    color: #666;
}

.game-stats span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.play-btn {
    width: 100%;
    background: var(--gradient-primary);
    border: none;
    color: white;
    padding: 0.75rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
}

.play-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    color: white;
}

/* 分类卡片 */
.category-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    height: 100%;
    border: none;
    text-decoration: none;
    color: inherit;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    color: inherit;
    text-decoration: none;
}

.category-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.category-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.category-count {
    color: #666;
    font-size: 0.9rem;
}

/* 排行榜样式 */
.leaderboard-table {
    background: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.leaderboard-table .table {
    margin-bottom: 0;
}

.leaderboard-table .table th {
    background: var(--gradient-primary);
    color: white;
    border: none;
    font-weight: 600;
    padding: 1rem 0.75rem;
}

.leaderboard-table .table td {
    padding: 0.75rem;
    vertical-align: middle;
    border-color: #f0f0f0;
}

.rank-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    font-weight: bold;
    font-size: 0.9rem;
}

.rank-1 {
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    color: #333;
}

.rank-2 {
    background: linear-gradient(135deg, #c0c0c0, #e8e8e8);
    color: #333;
}

.rank-3 {
    background: linear-gradient(135deg, #cd7f32, #daa520);
    color: white;
}

.rank-other {
    background: #f8f9fa;
    color: #666;
    border: 1px solid #dee2e6;
}

.user-avatar {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    object-fit: cover;
    margin-right: 0.5rem;
}

.user-avatar-placeholder {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: var(--gradient-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    margin-right: 0.5rem;
}

/* 表单样式 */
.form-control, .form-select {
    border-radius: var(--border-radius);
    border: 1px solid #ddd;
    padding: 0.75rem 1rem;
    transition: var(--transition);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.form-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

/* 按钮样式 */
.btn {
    border-radius: var(--border-radius);
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-success {
    background: var(--gradient-success);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* 模态框样式 */
.modal-content {
    border-radius: var(--border-radius-lg);
    border: none;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.modal-header .btn-close {
    filter: invert(1);
}

.modal-title {
    font-weight: 600;
}

/* 加载动画 */
.loading-spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid #f3f3f3;
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 警告和成功消息 */
.alert {
    border-radius: var(--border-radius);
    border: none;
    padding: 1rem 1.25rem;
}

.alert-success {
    background: linear-gradient(135deg, #d4edda, #c3e6cb);
    color: #155724;
}

.alert-danger {
    background: linear-gradient(135deg, #f8d7da, #f5c6cb);
    color: #721c24;
}

.alert-warning {
    background: linear-gradient(135deg, #fff3cd, #ffeaa7);
    color: #856404;
}

/* 游戏iframe容器 */
.game-iframe-container {
    width: 100%;
    height: 600px;
    border: none;
    border-radius: var(--border-radius);
    overflow: hidden;
}

/* 统计卡片 */
.stats-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    text-align: center;
    height: 100%;
}

.stats-number {
    font-size: 2.5rem;
    font-weight: bold;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stats-label {
    color: #666;
    font-weight: 500;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-section {
        text-align: center;
        padding: 2rem 0;
    }
    
    .hero-section .display-4 {
        font-size: 2rem;
    }
    
    .game-card .card-img-top {
        height: 150px;
    }
    
    .game-iframe-container {
        height: 400px;
    }
    
    .category-card {
        padding: 1.5rem;
    }
    
    .category-icon {
        font-size: 2rem;
    }
}

@media (max-width: 576px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .hero-section {
        min-height: 50vh;
    }
    
    .game-iframe-container {
        height: 300px;
    }
    
    .modal-dialog {
        margin: 1rem;
    }
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a6fd8, #6a4190);
}

/* 动画效果 */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-up {
    animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
    from { transform: translateY(50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* 工具提示 */
.tooltip {
    font-size: 0.875rem;
}

.tooltip-inner {
    background: var(--dark-color);
    border-radius: var(--border-radius);
}

/* 分页样式 */
.pagination {
    margin: 0;
}

.page-link {
    border: none;
    color: var(--primary-color);
    margin: 0 2px;
    border-radius: var(--border-radius);
}

.page-link:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.page-item.active .page-link {
    background: var(--gradient-primary);
    border: none;
}

/* 无数据状态 */
.no-data {
    text-align: center;
    padding: 3rem;
    color: #666;
}

.no-data i {
    font-size: 4rem;
    color: #ddd;
    margin-bottom: 1rem;
}

/* 徽章样式 */
.badge {
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius);
    font-weight: 500;
}

.badge-primary {
    background: var(--gradient-primary);
}

.badge-success {
    background: var(--gradient-success);
}

/* 进度条 */
.progress {
    height: 0.5rem;
    border-radius: var(--border-radius);
    background-color: #f0f0f0;
}

.progress-bar {
    border-radius: var(--border-radius);
    background: var(--gradient-primary);
}