/* 现代化响应式样式表 - 优秀经办人文件管理系统 */

/* CSS变量定义 */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --background-color: #f8fafc;
    --surface-color: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --border-radius: 0.5rem;
    --transition: all 0.2s ease-in-out;
}

/* 重置样式 */
* {
    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: var(--text-primary);
    background-color: var(--background-color);
}

/* 头部导航 */
.navbar {
    background: var(--surface-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary-color);
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

/* 主要内容区域 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

.hero-section {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 3rem 1rem;
    text-align: center;
    margin-bottom: 2rem;
    border-radius: var(--border-radius);
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
}

/* 搜索区域 */
.search-section {
    background: var(--surface-color);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
}

.search-form {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.search-input {
    flex: 1;
    min-width: 200px;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

/* 分类卡片 */
.categories-section {
    margin-bottom: 2rem;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.category-card {
    background: var(--surface-color);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.category-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.category-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.category-name {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.category-count {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* 文件列表 */
.files-section {
    margin-bottom: 2rem;
}

.file-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.file-card {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.file-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.file-header {
    padding: 1rem;
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
    border-bottom: 1px solid var(--border-color);
}

.file-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.file-name {
    font-weight: 600;
    margin-bottom: 0.25rem;
    word-break: break-word;
}

.file-type {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.file-body {
    padding: 1rem;
}

.file-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.file-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.file-actions {
    display: flex;
    gap: 0.5rem;
}

.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

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

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

.btn-secondary {
    background: var(--secondary-color);
    color: white;
}

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

.btn-warning {
    background: var(--warning-color);
    color: white;
}

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

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.btn-outline:hover {
    background: var(--background-color);
}

/* 上传表单 */
.upload-section {
    background: var(--surface-color);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
}

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

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

.form-file {
    position: relative;
    padding: 2rem;
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.form-file:hover {
    border-color: var(--primary-color);
    background: rgb(37 99 235 / 0.05);
}

.form-file input[type="file"] {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
}

.pagination-item {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--text-secondary);
    transition: var(--transition);
}

.pagination-item:hover,
.pagination-item.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* 消息提示 */
.alert {
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}

.alert-success {
    background: rgb(16 185 129 / 0.1);
    color: var(--success-color);
    border: 1px solid rgb(16 185 129 / 0.2);
}

.alert-error {
    background: rgb(239 68 68 / 0.1);
    color: var(--error-color);
    border: 1px solid rgb(239 68 68 / 0.2);
}

.alert-warning {
    background: rgb(245 158 11 / 0.1);
    color: var(--warning-color);
    border: 1px solid rgb(245 158 11 / 0.2);
}

.alert-info {
    background: rgb(59 130 246 / 0.1);
    color: var(--primary-color);
    border: 1px solid rgb(59 130 246 / 0.2);
}

/* 输入组样式 */
.input-group {
    display: flex;
    width: 100%;
}

.input-group-prepend,
.input-group-append {
    display: flex;
}

.input-group-text {
    display: flex;
    align-items: center;
    padding: 0.75rem;
    margin-bottom: 0;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--text-primary);
    text-align: center;
    white-space: nowrap;
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
}

.input-group-prepend {
    margin-right: -1px;
}

.input-group-append {
    margin-left: -1px;
}

.input-group-prepend .input-group-text {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.input-group-append .input-group-text {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

/* 移动端响应式设计 */
@media (max-width: 768px) {
    .navbar-container {
        padding: 0 0.5rem;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 4rem;
        left: -100%;
        width: 100%;
        height: calc(100vh - 4rem);
        background: var(--surface-color);
        flex-direction: column;
        justify-content: flex-start;
        padding: 2rem 0;
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-link {
        font-size: 1.125rem;
        padding: 1rem 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .search-form {
        flex-direction: column;
    }
    
    .search-input {
        min-width: 100%;
    }
    
    .category-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 0.75rem;
    }
    
    .file-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .file-actions {
        flex-direction: column;
    }
    
    .container {
        padding: 0.5rem;
    }
    
    .hero-section {
        padding: 2rem 1rem;
    }
    
    .upload-section,
    .search-section {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .category-card {
        padding: 1rem;
    }
    
    .file-card {
        margin-bottom: 1rem;
    }
    
.pagination {
        flex-wrap: wrap;
    }
}

/* 用户下拉菜单样式 */
.user-dropdown {
    position: relative;
    display: inline-block;
}

.user-menu-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    background: rgba(37, 99, 235, 0.1);
    transition: all 0.3s ease;
    color: var(--text-primary);
    text-decoration: none;
}

.user-menu-btn:hover {
    background: rgba(37, 99, 235, 0.2);
    transform: none;
}

.user-dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    background: var(--surface-color);
    min-width: 200px;
    box-shadow: var(--shadow-lg);
    border-radius: var(--border-radius);
    z-index: 1000;
    margin-top: 0.5rem;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.user-dropdown-content a {
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    border-bottom: 1px solid var(--border-color);
}

.user-dropdown-content a:last-child {
    border-bottom: none;
}

.user-dropdown-content a:hover {
    background: var(--background-color);
    color: var(--primary-color);
    transform: none;
}

.user-dropdown:hover .user-dropdown-content {
    display: block;
    animation: fadeIn 0.3s ease;
}

.user-dropdown-content i {
    width: 16px;
    text-align: center;
}

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

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(37, 99, 235, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* 工具提示 */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 120px;
    background-color: var(--text-primary);
    color: white;
    text-align: center;
    border-radius: 6px;
    padding: 5px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -60px;
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 0.75rem;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

/* 暗色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #0f172a;
        --surface-color: #1e293b;
        --text-primary: #f1f5f9;
        --text-secondary: #94a3b8;
        --border-color: #334155;
    }
    
    .file-header {
        background: linear-gradient(135deg, #1e293b, #334155);
    }
}

/* 文章列表样式 */
.file-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.file-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    text-decoration: none;
    color: inherit;
}

.file-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.file-item-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--background-color);
    border-radius: var(--border-radius);
    font-size: 1.5rem;
}

.file-item-content {
    flex: 1;
    min-width: 0;
}

.file-item-title {
    margin: 0 0 0.5rem 0;
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 1.3;
}

.file-item-title a {
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
}

.file-item-title a:hover {
    color: var(--primary-color);
}

.file-item-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.file-item-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.file-item-description {
    margin: 0;
    font-size: 12px;
    color: #999999;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.file-item-actions {
    flex-shrink: 0;
    display: flex;
    flex-direction: row;
    gap: 0.5rem;
    min-width: 100px;
}

@media (max-width: 768px) {
    .file-item {
        flex-direction: column;
        align-items: stretch;
    }
    
    .file-item-icon {
        align-self: flex-start;
    }
    
    .file-item-actions {
        flex-direction: row;
        justify-content: flex-start;
    }
    
    .file-item-meta {
        font-size: 0.75rem;
    }
}

@media (max-width: 480px) {
    .file-item {
        padding: 1rem;
    }

    .file-item-meta {
        flex-direction: column;
        gap: 0.25rem;
    }
}

/* 收藏按钮样式 */
.favorite-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0.5rem;
    border-radius: 4px;
}

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

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

.favorite-time {
    color: var(--primary-color);
    font-size: 0.875rem;
}

/* 管理员界面样式 */
.admin-container {
    display: flex;
    min-height: calc(100vh - 4rem);
    background: var(--background-color);
}

.admin-sidebar {
    width: 250px;
    background: var(--surface-color);
    border-right: 1px solid var(--border-color);
    padding: 1.5rem 0;
    position: sticky;
    top: 4rem;
    height: calc(100vh - 4rem);
    overflow-y: auto;
}

.admin-sidebar h3 {
    padding: 0 1.5rem;
    margin-bottom: 1rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.admin-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.admin-nav a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.875rem;
    font-weight: 500;
}

.admin-nav a:hover {
    background: var(--background-color);
    color: var(--primary-color);
}

.admin-nav a.active {
    background: var(--primary-color);
    color: white;
    border-right: 3px solid var(--primary-dark);
}

.admin-main {
    flex: 1;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.admin-main h1 {
    margin-bottom: 2rem;
    color: var(--text-primary);
    font-size: 1.875rem;
    font-weight: 700;
}

.admin-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    gap: 1rem;
    flex-wrap: wrap;
}

.admin-table {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

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

.admin-table th,
.admin-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.875rem;
}

.admin-table th {
    background: var(--background-color);
    font-weight: 600;
    color: var(--text-primary);
    position: sticky;
    top: 0;
    z-index: 10;
}

.admin-table tr:hover {
    background: var(--background-color);
}

.admin-table tr:last-child td {
    border-bottom: none;
}

.action-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    border-radius: 0.25rem;
}

.status-badge {
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 500;
    display: inline-block;
}

.status-badge.active {
    background: #d1fae5;
    color: #065f46;
}

.status-badge.inactive {
    background: #fee2e2;
    color: #991b1b;
}

.status-badge.public {
    background: #d1fae5;
    color: #065f46;
}

.status-badge.private {
    background: #fef3c7;
    color: #92400e;
}

/* 管理员卡片样式 */
.admin-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.admin-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.admin-card h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 600;
}

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

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

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    cursor: pointer;
    color: var(--text-primary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

.stat-item {
    text-align: center;
    padding: 0.75rem;
    background: var(--background-color);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.stat-value {
    display: block;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
}

.server-info {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.info-item:last-child {
    border-bottom: none;
}

.info-label {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.info-value {
    color: var(--text-primary);
    font-size: 0.875rem;
}

.maintenance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.maintenance-form {
    margin: 0;
}

.alert {
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: var(--border-radius);
    border: 1px solid transparent;
}

.alert-success {
    color: #065f46;
    background-color: #d1fae5;
    border-color: #10b981;
}

/* 响应式管理界面 */
@media (max-width: 768px) {
    .admin-container {
        flex-direction: column;
    }
    
    .admin-sidebar {
        width: 100%;
        height: auto;
        position: relative;
        top: 0;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 1rem 0;
    }
    
    .admin-sidebar h3 {
        padding: 0 1rem;
    }
    
    .admin-nav a {
        padding: 0.5rem 1rem;
    }
    
    .admin-main {
        padding: 1rem;
    }
    
    .admin-main h1 {
        font-size: 1.5rem;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .admin-cards {
        grid-template-columns: 1fr;
    }
    
    .maintenance-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .admin-main {
        padding: 0.5rem;
    }
    
    .admin-toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
}