/* PHP分发系统样式表 */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

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

/* 导航栏 */
.navbar {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand a {
    color: white;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: bold;
}

.nav-menu {
    display: flex;
    gap: 1.5rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
}

.nav-menu a:hover {
    opacity: 0.8;
}

/* 页面头部 */
.page-header {
    margin: 2rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-header h1 {
    color: #2c3e50;
}

.search-form {
    display: flex;
    gap: 0.5rem;
}

.search-form input {
    padding: 0.5rem 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.search-form button {
    padding: 0.5rem 1.5rem;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
}

.search-form button:hover {
    background-color: #2980b9;
}

/* 文件网格 */
.file-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.file-card {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
}

.file-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.file-icon {
    color: #3498db;
    margin-bottom: 1rem;
}

.file-info h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.file-meta {
    font-size: 0.9rem;
    color: #7f8c8d;
    margin: 0.5rem 0;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.file-description {
    color: #555;
    margin: 0.5rem 0;
    font-size: 0.9rem;
}

.file-actions {
    margin-top: auto;
    padding-top: 1rem;
}

/* 按钮 */
.btn {
    display: inline-block;
    padding: 0.6rem 1.5rem;
    text-decoration: none;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
    text-align: center;
}

.btn-primary {
    background-color: #3498db;
    color: white;
}

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-danger {
    background-color: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background-color: #c0392b;
}

.btn-sm {
    padding: 0.4rem 1rem;
    font-size: 0.9rem;
}

/* 表单 */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #2c3e50;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
}

.form-group small {
    display: block;
    margin-top: 0.5rem;
    color: #7f8c8d;
    font-size: 0.9rem;
}

/* 认证页面 */
.auth-box {
    max-width: 400px;
    margin: 4rem auto;
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.auth-box h1 {
    text-align: center;
    margin-bottom: 2rem;
    color: #2c3e50;
}

.auth-link {
    text-align: center;
    margin-top: 1.5rem;
    color: #7f8c8d;
}

.auth-link a {
    color: #3498db;
    text-decoration: none;
}

.auth-link a:hover {
    text-decoration: underline;
}

/* 上传页面 */
.upload-box {
    max-width: 600px;
    margin: 2rem auto;
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.upload-form {
    margin-top: 1.5rem;
}

.progress-wrapper {
    margin: 1.5rem 0;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background-color: #ecf0f1;
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    width: 0%;
    background-color: #3498db;
    transition: width 0.2s ease;
}

.progress-text {
    margin-top: 0.5rem;
    text-align: right;
    color: #7f8c8d;
    font-size: 0.9rem;
}

.link-row {
    margin-top: 1rem;
}

.link-row label {
    display: block;
    margin-bottom: 0.5rem;
    color: #2c3e50;
    font-weight: 500;
}

.link-input {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.link-input input {
    flex: 1;
    padding: 0.6rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 0.95rem;
    font-family: inherit;
}

.link-input input:focus {
    outline: none;
    border-color: #3498db;
}

/* 提示信息 */
.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.alert-error {
    background-color: #fee;
    color: #c33;
    border: 1px solid #fcc;
}

.alert-success {
    background-color: #efe;
    color: #3c3;
    border: 1px solid #cfc;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.empty-state p {
    font-size: 1.2rem;
    color: #7f8c8d;
    margin-bottom: 1.5rem;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin: 2rem 0;
    padding: 1rem;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* 个人中心 */
.profile-section {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.profile-section h2 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #3498db;
}

.profile-info p {
    margin: 0.75rem 0;
    color: #555;
}

.file-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.file-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 4px;
    border-left: 4px solid #3498db;
}

.file-item h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

/* 管理后台 */
.admin-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid #ddd;
}

.tab {
    padding: 1rem 2rem;
    text-decoration: none;
    color: #7f8c8d;
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
}

.tab:hover {
    color: #3498db;
}

.tab.active {
    color: #3498db;
    border-bottom-color: #3498db;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.stat-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    text-align: center;
}

.stat-card h3 {
    color: #7f8c8d;
    font-size: 1rem;
    margin-bottom: 1rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: #3498db;
}

.admin-table {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    overflow-x: auto;
}

.admin-table table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table th,
.admin-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.admin-table th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: #2c3e50;
}

.admin-table tr:hover {
    background-color: #f8f9fa;
}

.text-muted {
    color: #7f8c8d;
}

/* 页脚 */
.footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 4rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
    }

    .page-header {
        flex-direction: column;
        align-items: stretch;
    }

    .file-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .admin-table {
        font-size: 0.9rem;
    }

    .file-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}