/* ========================================
   黯默穹鸣 - 信息查询系统样式表
   ======================================== */

/* CSS变量 */
:root {
    --primary-color: #1a1a2e;
    --secondary-color: #16213e;
    --accent-color: #e94560;
    --text-color: #eaeaea;
    --text-muted: #a0a0a0;
    --bg-color: #0f0f1a;
    --card-bg: #1a1a2e;
    --border-color: #2a2a4a;
    --success-color: #4ade80;
    --error-color: #f87171;
    --warning-color: #fbbf24;
}

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #ff6b8a;
}

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

/* ========================================
   头部导航
   ======================================== */
.site-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 20px 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.site-header h1 {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: 2px;
}

.site-header h1 a {
    color: var(--text-color);
    background: linear-gradient(135deg, var(--accent-color), #ff8a9b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.site-header nav {
    display: flex;
    gap: 25px;
    flex-wrap: wrap;
}

.site-header nav a {
    color: var(--text-muted);
    font-weight: 500;
    padding: 8px 12px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.site-header nav a:hover,
.site-header nav a.active {
    color: var(--text-color);
    background-color: rgba(233, 69, 96, 0.2);
}

/* ========================================
   主页样式
   ======================================== */
.home-page {
    min-height: calc(100vh - 200px);
}

.hero {
    text-align: center;
    padding: 80px 20px;
    background: linear-gradient(180deg, rgba(26, 26, 46, 0.8) 0%, transparent 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(233, 69, 96, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    background: linear-gradient(135deg, var(--text-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
}

.categories-section {
    padding: 60px 0;
}

.categories-section h3 {
    font-size: 1.8rem;
    margin-bottom: 30px;
    text-align: center;
    color: var(--text-color);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.category-card {
    background: linear-gradient(145deg, var(--card-bg), rgba(22, 33, 62, 0.8));
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(233, 69, 96, 0.2);
    border-color: var(--accent-color);
}

.category-icon {
    font-size: 3rem;
    margin-bottom: 10px;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.category-icon img {
    max-width: 100%;
    max-height: 100%;
    border-radius: 12px;
    object-fit: cover;
}

.category-card h4 {
    font-size: 1.4rem;
    color: var(--text-color);
}

.category-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.category-count {
    background-color: rgba(233, 69, 96, 0.2);
    color: var(--accent-color);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    margin-top: auto;
}

.no-category {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.no-category p {
    margin-bottom: 20px;
}

/* ========================================
   类别页面
   ======================================== */
.category-page {
    padding: 60px 0;
    min-height: calc(100vh - 250px);
}

.category-header {
    text-align: center;
    margin-bottom: 50px;
    padding-bottom: 30px;
    border-bottom: 2px solid var(--border-color);
}

.category-header h2 {
    font-size: 2.2rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.category-desc {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.item-card {
    background: linear-gradient(145deg, var(--card-bg), rgba(22, 33, 62, 0.6));
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.item-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
    border-color: rgba(233, 69, 96, 0.5);
}

.item-media {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background-color: rgba(0, 0, 0, 0.3);
}

.item-media img,
.item-media video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.item-card:hover .item-media img,
.item-card:hover .item-media video {
    transform: scale(1.05);
}

.item-info {
    padding: 25px;
}

.item-info h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    color: var(--text-color);
}

.item-meta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.item-meta span {
    color: var(--text-muted);
    font-size: 0.9rem;
    padding: 4px 12px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
}

.item-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

.no-items {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
    background-color: rgba(26, 26, 46, 0.5);
    border-radius: 16px;
}

/* ========================================
   底部
   ======================================== */
.site-footer {
    background-color: var(--primary-color);
    padding: 30px 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

.site-footer p {
    color: var(--text-muted);
}

.admin-link {
    margin-top: 15px;
}

.admin-link a {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ========================================
   按钮
   ======================================== */
.btn {
    display: inline-block;
    padding: 10px 24px;
    background-color: var(--secondary-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.btn:hover {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
}

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

.btn-primary:hover {
    background-color: #d63d56;
    border-color: #d63d56;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-small {
    padding: 6px 14px;
    font-size: 0.85rem;
}

.btn-danger {
    background-color: var(--error-color);
    border-color: var(--error-color);
    color: white;
}

.btn-danger:hover {
    background-color: #dc2626;
    border-color: #dc2626;
}

/* ========================================
   后台管理样式
   ======================================== */
.admin-page {
    min-height: 100vh;
    background-color: var(--bg-color);
}

.admin-wrapper {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 250px;
    background: linear-gradient(180deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 30px 20px;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border-color);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.admin-sidebar h2 {
    font-size: 1.4rem;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--accent-color);
    color: var(--text-color);
}

.admin-sidebar nav {
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}

.admin-sidebar nav a {
    color: var(--text-muted);
    padding: 12px 16px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.admin-sidebar nav a:hover,
.admin-sidebar nav a.active {
    background-color: rgba(233, 69, 96, 0.2);
    color: var(--text-color);
}

.sidebar-footer {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.admin-content {
    flex: 1;
    margin-left: 250px;
    padding: 30px;
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.content-header h1 {
    font-size: 1.8rem;
    color: var(--text-color);
}

/* 统计卡片 */
.admin-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.stat-card {
    background: linear-gradient(145deg, var(--card-bg), rgba(22, 33, 62, 0.8));
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 25px;
    text-align: center;
}

.stat-card h3 {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 10px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
}

/* 管理区块 */
.admin-section {
    background: linear-gradient(145deg, var(--card-bg), rgba(22, 33, 62, 0.6));
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 30px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.section-header h2 {
    font-size: 1.4rem;
    color: var(--text-color);
}

/* 表格 */
.admin-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.admin-table th,
.admin-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.admin-table th {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
}

.admin-table td {
    color: var(--text-color);
}

.admin-table tr:hover td {
    background-color: rgba(233, 69, 96, 0.05);
}

.admin-table .actions {
    display: flex;
    gap: 10px;
}

/* 表单 */
.admin-form {
    max-width: 600px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-color);
    font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="password"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    background-color: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(233, 69, 96, 0.2);
}

.form-group small {
    display: block;
    margin-top: 6px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.form-actions {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

/* 提示框 */
.alert {
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 25px;
    font-weight: 500;
}

.alert-success {
    background-color: rgba(74, 222, 128, 0.15);
    border: 1px solid var(--success-color);
    color: var(--success-color);
}

.alert-error {
    background-color: rgba(248, 113, 113, 0.15);
    border: 1px solid var(--error-color);
    color: var(--error-color);
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state p {
    margin-bottom: 20px;
}

/* 媒体预览 */
.media-preview {
    margin-top: 15px;
    max-width: 300px;
}

.media-preview img,
.media-preview video {
    max-width: 100%;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

/* ========================================
   登录页面
   ======================================== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-color) 0%, var(--primary-color) 100%);
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-box {
    background: linear-gradient(145deg, var(--card-bg), rgba(22, 33, 62, 0.9));
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 50px 40px;
    text-align: center;
}

.login-box h1 {
    font-size: 2rem;
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--accent-color), #ff8a9b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-box h2 {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 40px;
    font-weight: 400;
}

.login-box .form-group {
    text-align: left;
}

.login-hint {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.login-hint p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.back-home {
    margin-top: 20px;
}

.back-home a {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ========================================
   错误页面
   ======================================== */
.error-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.error-page h1 {
    font-size: 8rem;
    color: var(--accent-color);
    margin-bottom: 20px;
}

.error-page p {
    font-size: 1.5rem;
    color: var(--text-muted);
    margin-bottom: 40px;
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 768px) {
    .site-header .container {
        flex-direction: column;
        text-align: center;
    }

    .site-header nav {
        justify-content: center;
    }

    .admin-wrapper {
        flex-direction: column;
    }

    .admin-sidebar {
        width: 100%;
        position: relative;
        height: auto;
        padding: 20px;
    }

    .admin-sidebar nav {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }

    .sidebar-footer {
        display: none;
    }

    .admin-content {
        margin-left: 0;
        padding: 20px;
    }

    .admin-table {
        font-size: 0.85rem;
    }

    .admin-table th,
    .admin-table td {
        padding: 10px 8px;
    }

    .categories-grid,
    .items-grid {
        grid-template-columns: 1fr;
    }

    .login-box {
        padding: 30px 20px;
    }
}