/* 自定义样式 */

:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
}

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

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

.navbar-nav .nav-link {
    font-weight: 500;
    transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover {
    color: rgba(255, 255, 255, 0.8) !important;
}

/* 主要内容区域 */
.main-content {
    min-height: calc(100vh - 200px);
}

/* 英雄区域 */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%);
}

/* 统计数据 */
.stats-section .stat-item h3 {
    margin-bottom: 0.5rem;
}

/* 功能特色卡片 */
.feature-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e9ecef;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15) !important;
}

.feature-icon {
    opacity: 0.8;
}

/* 比赛卡片 */
.card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15) !important;
}

/* 使用流程 */
.process-step {
    position: relative;
}

.step-number {
    font-size: 1.5rem;
    margin: 0 auto;
}

/* 表单样式 */
.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

/* 按钮样式 */
.btn {
    font-weight: 500;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    background-color: #0056b3;
    border-color: #0056b3;
    transform: translateY(-1px);
}

.btn-outline-primary:hover {
    transform: translateY(-1px);
}

/* 徽章样式 */
.badge {
    font-weight: 500;
}

/* 表格样式 */
.table {
    border-radius: 0.375rem;
    overflow: hidden;
}

.table thead th {
    background-color: var(--light-color);
    border-bottom: 2px solid #dee2e6;
    font-weight: 600;
}

/* 分页样式 */
.pagination .page-link {
    color: var(--primary-color);
    border-color: #dee2e6;
}

.pagination .page-link:hover {
    color: #0056b3;
    background-color: var(--light-color);
    border-color: #dee2e6;
}

.pagination .page-item.active .page-link {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* 提示框样式 */
.alert {
    border: none;
    border-radius: 0.5rem;
    font-weight: 500;
}

.alert-success {
    background-color: #d1e7dd;
    color: #0a3622;
}

.alert-danger {
    background-color: #f8d7da;
    color: #58151c;
}

.alert-warning {
    background-color: #fff3cd;
    color: #664d03;
}

.alert-info {
    background-color: #cff4fc;
    color: #055160;
}

/* 加载动画 */
.spinner-border-sm {
    width: 1rem;
    height: 1rem;
}

/* 文件上传区域 */
.file-upload-area {
    border: 2px dashed #dee2e6;
    border-radius: 0.5rem;
    padding: 2rem;
    text-align: center;
    transition: border-color 0.3s ease;
    cursor: pointer;
}

.file-upload-area:hover {
    border-color: var(--primary-color);
}

.file-upload-area.dragover {
    border-color: var(--primary-color);
    background-color: rgba(13, 110, 253, 0.1);
}

/* 状态标签 */
.status-draft { color: #6c757d; }
.status-published { color: #0dcaf0; }
.status-registration-open { color: #198754; }
.status-registration-closed { color: #fd7e14; }
.status-voting-open { color: #ffc107; }
.status-voting-closed { color: #dc3545; }
.status-completed { color: #6f42c1; }

.status-pending { color: #ffc107; }
.status-approved { color: #198754; }
.status-rejected { color: #dc3545; }

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2.5rem;
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    .display-5 {
        font-size: 1.75rem;
    }
    
    .feature-card {
        margin-bottom: 1rem;
    }
    
    .process-step {
        margin-bottom: 2rem;
    }
}

/* 打印样式 */
@media print {
    .navbar,
    .footer,
    .btn,
    .alert {
        display: none !important;
    }
    
    .main-content {
        margin: 0 !important;
        padding: 0 !important;
    }
}

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

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

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* 工具提示 */
.tooltip-inner {
    background-color: var(--dark-color);
    color: white;
    border-radius: 0.375rem;
}

/* 模态框 */
.modal-content {
    border-radius: 0.5rem;
    border: none;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.modal-header {
    border-bottom: 1px solid #dee2e6;
    background-color: var(--light-color);
}

.modal-footer {
    border-top: 1px solid #dee2e6;
    background-color: var(--light-color);
}

/* 进度条 */
.progress {
    height: 0.5rem;
    border-radius: 0.25rem;
}

.progress-bar {
    background-color: var(--primary-color);
}

/* 标签页 */
.nav-tabs .nav-link {
    color: var(--secondary-color);
    border: 1px solid transparent;
}

.nav-tabs .nav-link:hover {
    color: var(--primary-color);
    border-color: #e9ecef #e9ecef #dee2e6;
}

.nav-tabs .nav-link.active {
    color: var(--primary-color);
    background-color: white;
    border-color: #dee2e6 #dee2e6 white;
}

/* 面包屑导航 */
.breadcrumb {
    background-color: transparent;
    padding: 0;
    margin-bottom: 1rem;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: ">";
    color: var(--secondary-color);
}

.breadcrumb-item.active {
    color: var(--secondary-color);
}

/* 作品和证书展示样式 */
.work-preview-card, .certificate-preview-card {
    transition: transform 0.2s, box-shadow 0.2s;
    border: none;
}

.work-preview-card:hover, .certificate-preview-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.work-preview, .certificate-preview {
    position: relative;
    overflow: hidden;
}

.work-preview img, .certificate-preview img {
    transition: transform 0.3s;
}

.work-preview:hover img, .certificate-preview:hover img {
    transform: scale(1.05);
}

/* 证书闪光效果 */
.certificate-preview::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.2) 50%, transparent 70%);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.certificate-preview-card:hover .certificate-preview::after {
    transform: translateX(100%);
}

/* 统计数据动画 */
.stat-item h3 {
    background: linear-gradient(45deg, #007bff, #0056b3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 功能卡片样式 */
.feature-card {
    transition: transform 0.2s;
    border: 1px solid #e9ecef;
}

.feature-card:hover {
    transform: translateY(-3px);
    border-color: #007bff;
}

.feature-icon {
    transition: transform 0.3s;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

/* 流程步骤样式 */
.process-step {
    position: relative;
}

.step-number {
    transition: transform 0.3s;
}

.process-step:hover .step-number {
    transform: scale(1.1);
}

/* 作品卡片特殊样式 */
.work-card {
    transition: all 0.3s ease;
}

.work-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.15);
}

.work-media {
    position: relative;
    overflow: hidden;
}

.work-image {
    transition: transform 0.4s ease;
}

.work-card:hover .work-image {
    transform: scale(1.08);
}

/* 投票按钮样式 */
.vote-btn {
    transition: all 0.3s ease;
}

.vote-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(0,123,255,0.3);
}

/* 证书画廊样式 */
.certificate-card {
    transition: all 0.3s ease;
    border: none;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.certificate-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .work-preview-card, .certificate-preview-card {
        margin-bottom: 1rem;
    }
    
    .display-5 {
        font-size: 2rem;
    }
    
    .lead {
        font-size: 1rem;
    }
    
    .hero-section h1 {
        font-size: 2.5rem;
    }
    
    .hero-section .lead {
        font-size: 1.1rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
}