/**
 * Delta Force 改枪码网站样式
 * 优化移动端适配
 */

/* ==================== 基础样式 ==================== */
:root {
    --primary: #f59e0b;
    --primary-dark: #d97706;
    --secondary: #1e293b;
    --accent: #ef4444;
    --success: #22c55e;
    --warning: #eab308;
    --info: #3b82f6;
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --bg-input: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border: #334155;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --radius: 8px;
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--primary-dark);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* ==================== 头部 ==================== */
.header {
    background: var(--secondary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo i {
    color: var(--primary);
    font-size: 1.4rem;
}

/* 桌面导航 */
.nav {
    display: flex;
    gap: 10px;
}

.nav-link {
    padding: 8px 14px;
    border-radius: var(--radius);
    color: var(--text-secondary);
    transition: all 0.2s;
    font-size: 0.9rem;
}

.nav-link:hover, .nav-link.active {
    background: var(--bg-input);
    color: var(--primary);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    padding: 8px;
    cursor: pointer;
}

/* ==================== 首页横幅 ==================== */
.hero {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--bg-dark) 100%);
    padding: 40px 0;
    text-align: center;
    border-bottom: 1px solid var(--border);
}

.hero-title {
    font-size: 1.8rem;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.hero-title i {
    color: var(--primary);
}

.hero-desc {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 25px;
    padding: 0 15px;
}

/* ==================== 统计数据 ==================== */
.stats {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* ==================== 筛选区域 ==================== */
.filter-section {
    background: var(--secondary);
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
}

.filter-form {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: flex-end;
}

.filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: flex-end;
    width: 100%;
}

.filter-group {
    flex: 1;
    min-width: 140px;
}

.filter-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.filter-group label i {
    margin-right: 5px;
}

.search-group {
    flex: 2;
    min-width: 200px;
}

.filter-select, .filter-input {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 1rem;
}

.filter-select:focus, .filter-input:focus {
    outline: none;
    border-color: var(--primary);
}

/* ==================== 按钮 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 18px;
    border: none;
    border-radius: var(--radius);
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
    white-space: nowrap;
}

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

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

.btn-secondary {
    background: var(--bg-input);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--border);
}

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

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

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

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

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

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

.btn-block {
    width: 100%;
    justify-content: center;
}

.btn-sm {
    padding: 6px 10px;
    font-size: 0.8rem;
}

/* ==================== 改枪码列表 ==================== */
.codes-section {
    padding: 20px 0;
}

.codes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 15px;
}

.code-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px;
    border: 1px solid var(--border);
    transition: all 0.2s;
}

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

.code-header {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.badge {
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge-season {
    background: var(--primary);
    color: var(--bg-dark);
}

.badge-mode {
    background: var(--info);
    color: white;
}

.code-gun {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--text-primary);
    word-break: break-word;
}

.code-content {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
    background: var(--bg-input);
    padding: 10px;
    border-radius: var(--radius);
    align-items: center;
}

.code-value {
    flex: 1;
    font-family: 'Consolas', monospace;
    font-size: 0.85rem;
    word-break: break-all;
    color: var(--primary);
}

.copy-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 5px;
    font-size: 1rem;
    transition: all 0.2s;
    flex-shrink: 0;
}

.copy-btn:hover {
    color: var(--primary);
    transform: scale(1.1);
}

.copy-btn.copied {
    color: var(--success);
}

.code-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 10px;
    line-height: 1.5;
}

.code-footer {
    display: flex;
    gap: 12px;
    color: var(--text-muted);
    font-size: 0.8rem;
    flex-wrap: wrap;
}

.code-footer i {
    margin-right: 4px;
}

/* ==================== 空状态 ==================== */
.empty-state {
    text-align: center;
    padding: 50px 20px;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 15px;
    opacity: 0.5;
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--secondary);
    border-top: 1px solid var(--border);
    padding: 15px 0;
    text-align: center;
    color: var(--text-muted);
    margin-top: auto;
    font-size: 0.9rem;
}

/* ==================== 登录页 ==================== */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--secondary) 100%);
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 380px;
}

.login-box {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 30px 25px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.login-header {
    text-align: center;
    margin-bottom: 25px;
}

.login-header i {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 12px;
}

.login-header h1 {
    font-size: 1.3rem;
    margin-bottom: 5px;
}

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

.login-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.form-group label i {
    margin-right: 5px;
}

.form-input {
    padding: 12px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 1rem;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
}

.form-select {
    padding: 12px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 1rem;
}

.form-textarea {
    padding: 12px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 1rem;
    resize: vertical;
    min-height: 80px;
}

.form-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.login-footer {
    margin-top: 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.login-footer a {
    display: block;
    margin-top: 8px;
}

/* ==================== 提示框 ==================== */
.alert {
    padding: 12px 14px;
    border-radius: var(--radius);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
}

.alert-success {
    background: rgba(34, 197, 94, 0.2);
    color: var(--success);
    border: 1px solid var(--success);
}

.alert-error {
    background: rgba(239, 68, 68, 0.2);
    color: var(--accent);
    border: 1px solid var(--accent);
}

/* ==================== 后台页面 ==================== */
.admin-page {
    background: var(--bg-dark);
}

.admin-nav {
    background: var(--secondary);
    padding: 12px 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
    gap: 10px;
}

.admin-nav-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.1rem;
    font-weight: 600;
}

.admin-nav-brand i {
    color: var(--primary);
}

.admin-nav-links {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.admin-nav-links .nav-link {
    padding: 6px 12px;
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.admin-nav-links .nav-link:hover,
.admin-nav-links .nav-link.active {
    background: var(--bg-input);
    color: var(--primary);
}

.nav-logout:hover {
    color: var(--accent) !important;
}

.admin-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 15px;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    gap: 15px;
    flex-wrap: wrap;
}

.admin-header h1 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.3rem;
}

.admin-header h1 i {
    color: var(--primary);
}

/* ==================== 统计卡片 ==================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    border: 1px solid var(--border);
}

.stat-icon {
    width: 45px;
    height: 45px;
    background: var(--primary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--bg-dark);
    flex-shrink: 0;
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
}

.stat-title {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

/* ==================== 表格容器 - 横向滚动 ==================== */
.table-container {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.admin-section {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid var(--border);
}

.admin-section h2 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.admin-section h2 i {
    color: var(--primary);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

.admin-table th,
.admin-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.admin-table th {
    background: var(--bg-input);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.85rem;
    white-space: nowrap;
}

.admin-table tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.empty-row {
    text-align: center;
    color: var(--text-muted);
    padding: 30px;
}

.code-preview, .code-text {
    font-family: 'Consolas', monospace;
    font-size: 0.8rem;
    color: var(--primary);
    background: var(--bg-input);
    padding: 3px 6px;
    border-radius: 4px;
    word-break: break-all;
}

.desc-cell {
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.action-cell {
    white-space: nowrap;
}

.action-cell .btn {
    margin-right: 4px;
}

/* ==================== 模式统计 ==================== */
.mode-stats {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.mode-bar {
    display: flex;
    align-items: center;
    gap: 12px;
}

.mode-name {
    width: 80px;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.bar-container {
    flex: 1;
    height: 18px;
    background: var(--bg-input);
    border-radius: 9px;
    overflow: hidden;
    min-width: 80px;
}

.bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--primary-dark));
    border-radius: 9px;
    transition: width 0.3s ease;
}

.mode-count {
    width: 40px;
    text-align: right;
    font-weight: 600;
    font-size: 0.9rem;
}

/* ==================== 筛选栏 ==================== */
.filter-bar {
    background: var(--bg-card);
    padding: 12px 15px;
    border-radius: var(--radius);
    margin-bottom: 15px;
    border: 1px solid var(--border);
}

.filter-form-inline {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
}

.filter-form-inline .form-select,
.filter-form-inline .form-input {
    padding: 8px 10px;
    min-width: 100px;
    font-size: 0.9rem;
}

/* ==================== 批量操作 ==================== */
.batch-actions {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-bottom: 12px;
    padding: 10px;
    background: var(--bg-input);
    border-radius: var(--radius);
    flex-wrap: wrap;
}

.selected-count {
    margin-left: auto;
    font-size: 0.85rem;
    color: var(--text-muted);
}

#selectedCount { 
    font-weight: 600; 
    color: var(--primary); 
}

.code-checkbox { 
    cursor: pointer; 
    width: 16px; 
    height: 16px; 
}

#checkAll { 
    cursor: pointer; 
}

/* ==================== 设置页面 ==================== */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.settings-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 20px;
    border: 1px solid var(--border);
}

.settings-card.full-width {
    grid-column: 1 / -1;
}

.settings-card h2 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.settings-card h2 i {
    color: var(--primary);
}

.settings-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.help-content {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.9rem;
}

.help-content h4 {
    color: var(--text-primary);
    margin: 12px 0 8px;
}

.help-content h4:first-child {
    margin-top: 0;
}

.help-content ol {
    margin-left: 18px;
}

.help-content code {
    background: var(--bg-input);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--primary);
    font-size: 0.85rem;
}

.text-warning {
    color: var(--warning);
    margin-top: 12px;
}

/* ==================== 弹窗 ==================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 15px;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    border-radius: var(--radius);
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--border);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    border-bottom: 1px solid var(--border);
}

.modal-header h2 {
    font-size: 1.1rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

.modal-close:hover {
    color: var(--accent);
}

.modal-body {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.modal-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

/* ==================== AI搜索区域 ==================== */
.ai-search-section {
    background: var(--secondary);
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
}

.ai-search-box {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.ai-search-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.ai-search-title i {
    color: var(--primary);
}

.ai-search-form {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.ai-search-form .form-input {
    flex: 1;
    min-width: 200px;
}

.ai-search-results {
    background: var(--bg-card);
    border-radius: var(--radius);
    margin-top: 15px;
    border: 1px solid var(--border);
    max-height: 400px;
    overflow-y: auto;
}

.ai-result-item {
    padding: 12px 15px;
    border-bottom: 1px solid var(--border);
}

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

.ai-result-header {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.ai-result-gun {
    font-weight: 600;
    margin-bottom: 6px;
}

.ai-result-code {
    display: flex;
    gap: 8px;
    align-items: center;
    background: var(--bg-input);
    padding: 8px 10px;
    border-radius: var(--radius);
}

.ai-result-code code {
    flex: 1;
    font-family: 'Consolas', monospace;
    color: var(--primary);
    font-size: 0.85rem;
    word-break: break-all;
}

/* ==================== Toast 提示 ==================== */
.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-card);
    color: var(--text-primary);
    padding: 12px 20px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    z-index: 2000;
    animation: toastIn 0.3s ease;
}

.toast.success {
    border-color: var(--success);
    color: var(--success);
}

.toast.error {
    border-color: var(--accent);
    color: var(--accent);
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* ==================== 加载状态 ==================== */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 30px;
    color: var(--text-muted);
}

.loading i {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ==================== 响应式 - 平板 ==================== */
@media (max-width: 992px) {
    .settings-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ==================== 显示/隐藏工具类 ==================== */
.desktop-only { display: block; }
.mobile-only { display: none; }

@media (max-width: 768px) {
    .desktop-only { display: none; }
    .mobile-only { display: block; }
}

/* ==================== 响应式 - 手机 ==================== */
@media (max-width: 768px) {
    html {
        font-size: 15px;
    }
    
    .container {
        padding: 0 12px;
    }
    
    /* 头部 */
    .header-content {
        padding: 10px 0;
    }
    
    .logo {
        font-size: 1.1rem;
    }
    
    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--secondary);
        flex-direction: column;
        padding: 10px;
        border-bottom: 1px solid var(--border);
    }
    
    .nav.active {
        display: flex;
    }
    
    .nav-link {
        padding: 12px 15px;
        text-align: center;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    /* 首页横幅 */
    .hero {
        padding: 30px 0;
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .hero-desc {
        font-size: 0.9rem;
    }
    
    .stats {
        gap: 20px;
    }
    
    .stat-number {
        font-size: 1.6rem;
    }
    
    /* 筛选 */
    .filter-section {
        padding: 15px 0;
    }
    
    .filter-form {
        gap: 10px;
    }
    
    .filter-group {
        min-width: 100%;
    }
    
    .search-group {
        min-width: 100%;
    }
    
    .filter-form-inline {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-form-inline .form-select,
    .filter-form-inline .form-input {
        min-width: 100%;
    }
    
    /* 改枪码列表 */
    .codes-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .code-card {
        padding: 14px;
    }
    
    .code-gun {
        font-size: 1rem;
    }
    
    /* 按钮 */
    .btn {
        padding: 8px 14px;
        font-size: 0.9rem;
    }
    
    /* 后台 */
    .admin-nav {
        padding: 10px 12px;
    }
    
    .admin-nav-links {
        width: 100%;
        justify-content: center;
    }
    
    .admin-container {
        padding: 15px 12px;
    }
    
    .admin-header {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }
    
    .admin-header .btn {
        margin-top: 10px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .stat-card {
        padding: 12px;
    }
    
    .stat-icon {
        width: 38px;
        height: 38px;
        font-size: 1.1rem;
    }
    
    .stat-value {
        font-size: 1.3rem;
    }
    
    .admin-section {
        padding: 15px 12px;
    }
    
    /* 表格滚动 */
    .table-container {
        margin: 0 -12px;
        padding: 0 12px;
    }
    
    .admin-table {
        font-size: 0.85rem;
    }
    
    .admin-table th,
    .admin-table td {
        padding: 8px 10px;
    }
    
    /* 批量操作 */
    .batch-actions {
        justify-content: center;
    }
    
    .selected-count {
        width: 100%;
        text-align: center;
        margin-left: 0;
        margin-top: 8px;
    }
    
    /* 设置 */
    .settings-card {
        padding: 16px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    /* 弹窗 */
    .modal {
        padding: 10px;
    }
    
    .modal-content {
        max-height: 85vh;
    }
    
    .modal-header {
        padding: 14px;
    }
    
    .modal-body {
        padding: 14px;
    }
    
    .modal-footer {
        padding: 10px 14px;
        flex-direction: column;
    }
    
    .modal-footer .btn {
        width: 100%;
    }
    
    /* AI搜索 */
    .ai-search-section {
        padding: 15px 0;
    }
    
    .ai-search-form {
        flex-direction: column;
    }
    
    .ai-search-form .form-input {
        min-width: 100%;
    }
    
    .ai-result-item {
        padding: 10px 12px;
    }
    
    /* 登录 */
    .login-box {
        padding: 25px 20px;
    }
    
    /* 模式统计 */
    .mode-name {
        width: 70px;
        font-size: 0.8rem;
    }
    
    .mode-count {
        font-size: 0.85rem;
    }
}

/* ==================== 响应式 - 小屏手机 ==================== */
@media (max-width: 400px) {
    html {
        font-size: 14px;
    }
    
    .hero-title {
        font-size: 1.3rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .stat-card {
        flex-direction: column;
        text-align: center;
        gap: 8px;
    }
    
    .badge {
        font-size: 0.7rem;
        padding: 2px 6px;
    }
    
    .code-footer {
        flex-direction: column;
        gap: 6px;
    }
    
    .admin-nav-links .nav-link {
        padding: 6px 10px;
        font-size: 0.8rem;
    }
}

/* ==================== 深色模式滚动条 ==================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ==================== 移动端优化 ==================== */
@media (hover: none) {
    .code-card:hover {
        transform: none;
    }
    
    .copy-btn:hover {
        transform: none;
    }
    
    .btn:hover {
        filter: brightness(1.1);
    }
}

/* iOS 安全区域 */
@supports (padding: env(safe-area-inset-bottom)) {
    .footer {
        padding-bottom: calc(15px + env(safe-area-inset-bottom));
    }
    
    .modal-content {
        max-height: calc(90vh - env(safe-area-inset-top) - env(safe-area-inset-bottom));
    }
}