/* Auto Content Ops - 高端科技感深色主题 */
:root {
    /* 主色调 - 科技蓝紫渐变 */
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.3);
    --secondary: #06b6d4;
    --accent: #8b5cf6;
    
    /* 状态色 */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    
    /* 深色背景系 */
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    --bg-elevated: #252f47;
    --bg-input: #0b1120;
    
    /* 边框与分隔 */
    --border: #334155;
    --border-light: #475569;
    --divider: rgba(148, 163, 184, 0.1);
    
    /* 文字色 */
    --text: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* 圆角与阴影 */
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
    --glow-primary: 0 0 20px rgba(99, 102, 241, 0.4);
    --glow-success: 0 0 20px rgba(16, 185, 129, 0.3);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg-dark);
    color: var(--text);
    font-size: 14px;
    line-height: 1.6;
}

/* ========== 登录/注册页 ========== */
.auth-page, .page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: 
        radial-gradient(ellipse at top, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at bottom, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
        linear-gradient(180deg, #0f172a 0%, #1e1b4b 100%);
    padding: 20px;
    position: relative;
}

.auth-page::before, .page::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(90deg, transparent 0%, rgba(99, 102, 241, 0.03) 50%, transparent 100%);
    pointer-events: none;
}

.auth-card, .login-card {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg), 0 0 40px rgba(99, 102, 241, 0.1);
    width: 100%;
    max-width: 420px;
    position: relative;
    overflow: hidden;
}

.auth-card::before, .login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
}

.auth-card h1, .login-card h1, .login-card .login-header h1 {
    font-size: 26px;
    margin-bottom: 8px;
    text-align: center;
    background: linear-gradient(135deg, var(--text) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-card .login-header .login-logo {
    display: block;
    width: 100px;
    height: auto;
    margin: 0 auto 12px;
    border-radius: 6px;
}

.auth-card .subtitle, .login-card .login-header p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 14px;
}

.auth-card .form-group, .login-card .form-group { margin-bottom: 18px; }
.auth-card .form-group label, .login-card .form-group label { 
    display: block; 
    margin-bottom: 8px; 
    font-size: 13px; 
    color: var(--text-secondary);
    font-weight: 500;
}
.auth-card input, .login-card input { 
    width: 100%; 
    padding: 12px 14px; 
    border: 1px solid var(--border); 
    border-radius: var(--radius-sm); 
    font-size: 14px;
    background: var(--bg-input);
    color: var(--text);
    transition: all 0.2s;
}
.auth-card input:focus, .login-card input:focus { 
    outline: none; 
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}
.auth-card .form-actions, .login-card .form-actions { margin-top: 24px; }
.auth-card .error, .login-card .error-msg { color: var(--danger); font-size: 13px; margin-top: 8px; text-align: center; min-height: 18px; }
.auth-card .switch-link, .login-card .login-footer { text-align: center; margin-top: 16px; font-size: 13px; color: var(--text-muted); }
.auth-card .switch-link a, .login-card .login-footer a { color: var(--primary); cursor: pointer; text-decoration: none; }
.auth-card .switch-link a:hover, .login-card .login-footer a:hover { color: var(--secondary); }

/* ========== 顶部导航 ========== */
.top-nav {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.top-nav .nav-brand {
    font-size: 20px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 12px;
}

.top-nav .nav-brand .nav-logo {
    height: 44px;
    width: auto;
    border-radius: 4px;
    flex-shrink: 0;
}

.top-nav .nav-brand .nav-brand-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.top-nav .nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 14px;
}

.top-nav .nav-user {
    color: var(--text-secondary);
    font-weight: 500;
    padding: 6px 14px;
    background: var(--bg-card);
    border-radius: 20px;
    border: 1px solid var(--border);
}

/* ========== 主页面布局 ========== */
#mainPage {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: 0;
}

.main-layout {
    display: flex;
    min-height: calc(100vh - 64px);
}

/* ========== 侧边栏 ========== */
.sidebar {
    width: 240px;
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    padding: 20px 0;
    flex-shrink: 0;
}

.nav-list { list-style: none; padding: 0 12px; }
.nav-item {
    padding: 14px 18px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    margin-bottom: 4px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 12px;
}
.nav-item:hover { 
    background: var(--bg-card-hover);
    color: var(--text);
}
.nav-item.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(6, 182, 212, 0.1) 100%);
    color: var(--primary);
    font-weight: 600;
    border: 1px solid rgba(99, 102, 241, 0.3);
}

/* ========== 侧边栏底部官网入口 ========== */
.nav-divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 6px 0;
}
.nav-item.nav-external {
    padding: 0;
}
.nav-item.nav-external a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    width: 100%;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    cursor: pointer;
}
.nav-item.nav-external a:hover {
    color: var(--primary);
    background: var(--bg-card-hover);
}

/* ========== 子菜单折叠 ========== */
.nav-group {
    margin-bottom: 4px;
}
.nav-group-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    font-size: 11px;
    font-weight: 700;
    color: #9ca3af;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
    user-select: none;
}
.nav-group-header:hover { color: var(--text-secondary); }
.nav-group-header .nav-group-arrow {
    margin-left: auto;
    font-size: 10px;
    transition: transform 0.2s;
    flex-shrink: 0;
}
.nav-group.collapsed .nav-group-arrow { transform: rotate(-90deg); }
.nav-group.collapsed .nav-group-items { display: none; }
.nav-group-items { padding-left: 8px; margin-bottom: 4px; }
.nav-group-items .nav-item { padding: 10px 14px; font-size: 13.5px; }
.nav-group-items .nav-item.active { padding-left: 12px; }
.nav-badge {
    margin-left: auto;
    font-size: 10px;
    padding: 1px 6px;
    border-radius: 8px;
    font-weight: 600;
    flex-shrink: 0;
}
.nav-badge-pro  { background: #1e3a5f; color: #60a5fa; }
.nav-badge-new  { background: #14532d; color: #4ade80; }
.nav-badge-ent  { background: #78350f; color: #fbbf24; }
.nav-badge-hint { background: #1e293b; color: #64748b; }

/* ========== 功能未授权遮罩（子菜单锁定态） ========== */
.nav-item.nav-locked {
    opacity: 0.4;
    cursor: pointer;
    position: relative;
}
.nav-item.nav-locked::after {
    content: '🔒';
    font-size: 10px;
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
}

/* ========== 套餐升级弹窗 ========== */
.upgrade-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}
.upgrade-modal {
    background: #1e293b;
    border: 1px solid #334155;
    border-radius: 16px;
    width: 440px;
    max-width: 92vw;
    padding: 32px;
    box-shadow: 0 24px 64px rgba(0,0,0,0.5);
    text-align: center;
    color: #f1f5f9;
}
.upgrade-modal .um-icon { font-size: 52px; margin-bottom: 12px; }
.upgrade-modal .um-title { font-size: 20px; font-weight: 700; color: #f1f5f9; margin-bottom: 8px; }
.upgrade-modal .um-desc { font-size: 14px; color: #94a3b8; margin-bottom: 24px; line-height: 1.7; }
.upgrade-modal .um-plans { display: flex; gap: 10px; margin-bottom: 24px; }
.upgrade-modal .um-plan {
    flex: 1;
    padding: 14px 6px;
    border-radius: 10px;
    border: 2px solid #334155;
    cursor: pointer;
    transition: all 0.2s;
}
.upgrade-modal .um-plan:hover { border-color: #6366f1; transform: translateY(-2px); }
.upgrade-modal .um-plan.popular { border-color: #6366f1; background: rgba(99,102,241,0.1); }
.upgrade-modal .um-plan-name { font-size: 13px; font-weight: 700; margin-bottom: 4px; color: #f1f5f9; }
.upgrade-modal .um-plan-price { font-size: 22px; font-weight: 800; color: #818cf8; }
.upgrade-modal .um-plan-period { font-size: 11px; color: #64748b; }
.upgrade-modal .um-plan-tag {
    font-size: 10px;
    background: #6366f1;
    color: #fff;
    padding: 2px 6px;
    border-radius: 8px;
    margin-top: 4px;
    display: inline-block;
}
.upgrade-modal .um-btn-primary {
    width: 100%;
    padding: 13px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    margin-bottom: 8px;
    transition: opacity 0.2s;
}
.upgrade-modal .um-btn-primary:hover { opacity: 0.85; }
.upgrade-modal .um-btn-secondary {
    background: none;
    border: none;
    color: #64748b;
    font-size: 13px;
    cursor: pointer;
    padding: 6px;
}
.upgrade-modal .um-btn-secondary:hover { color: #94a3b8; }

/* ========== 内容区 ========== */
.content {
    flex: 1;
    padding: 28px 32px;
    overflow-x: auto;
    background: var(--bg-dark);
}

.tab-content h2 { 
    font-size: 24px; 
    margin-bottom: 24px;
    font-weight: 600;
    color: var(--text);
}

.tab-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 12px;
}

.tab-header h2 { margin-bottom: 0; }

/* ========== 统计卡片 ========== */
.stat-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 24px;
    border-radius: var(--radius);
    position: relative;
    overflow: hidden;
    transition: all 0.3s;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-light);
}

.stat-card .stat-value {
    font-size: 36px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--text) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.stat-card .stat-label {
    font-size: 13px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ========== 按钮 ========== */
.btn-primary, .btn-outline, .btn-danger {
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    cursor: pointer;
    border: 1px solid;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-full { width: 100%; display: block; text-align: center; }

.btn-primary { 
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: #fff; 
    border-color: transparent;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}
.btn-primary:hover { 
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.btn-outline { 
    background: transparent;
    color: var(--text-secondary);
    border-color: var(--border);
}
.btn-outline:hover { 
    background: var(--bg-card-hover);
    border-color: var(--border-light);
    color: var(--text);
}

.btn-danger { 
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.3);
}
.btn-danger:hover { 
    background: rgba(239, 68, 68, 0.2);
}

.btn-sm { padding: 6px 12px; font-size: 12px; }

/* ========== 表格 ========== */
.table-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

table { width: 100%; border-collapse: collapse; }
th, td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--border); }
th { 
    background: var(--bg-elevated);
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
tr:hover td { background: var(--bg-card-hover); }
tr:last-child td { border-bottom: none; }

/* ========== 弹窗 ========== */
.modal {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 100;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: var(--shadow-lg);
}

.modal-close {
    position: absolute;
    top: 16px; right: 16px;
    cursor: pointer;
    font-size: 24px;
    color: var(--text-muted);
    line-height: 1;
    transition: color 0.2s;
}
.modal-close:hover { color: var(--text); }

.modal-content h2 { 
    margin-bottom: 20px;
    color: var(--text);
}

/* ========== 表单 ========== */
.form-group { margin-bottom: 20px; }
.form-group label { 
    display: block; 
    margin-bottom: 8px; 
    font-size: 13px; 
    color: var(--text-secondary);
    font-weight: 500;
}
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    background: var(--bg-input);
    color: var(--text);
    transition: all 0.2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { 
    outline: none; 
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}
.form-group textarea { min-height: 120px; resize: vertical; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-actions { display: flex; gap: 12px; justify-content: flex-end; margin-top: 24px; }

/* ========== 状态标签 ========== */
.status-tag {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.status-draft { background: rgba(148, 163, 184, 0.15); color: #94a3b8; }
.status-reviewing { background: rgba(245, 158, 11, 0.15); color: #f59e0b; }
.status-approved { background: rgba(16, 185, 129, 0.15); color: #10b981; }
.status-rejected { background: rgba(239, 68, 68, 0.15); color: #ef4444; }
.status-published { background: rgba(59, 130, 246, 0.15); color: #3b82f6; }
.status-failed { background: rgba(239, 68, 68, 0.15); color: #ef4444; }
.status-publishing { background: rgba(99, 102, 241, 0.15); color: #6366f1; }
.status-active { background: rgba(16, 185, 129, 0.15); color: #10b981; }
.status-paused { background: rgba(148, 163, 184, 0.15); color: #94a3b8; }
.status-inactive { background: rgba(148, 163, 184, 0.15); color: #64748b; }
.status-error { background: rgba(239, 68, 68, 0.15); color: #ef4444; }

/* ========== Section ========== */
.section { margin-bottom: 32px; }
.section h3 { 
    font-size: 16px; 
    margin-bottom: 16px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

/* ========== 设置页 - 新设计 ========== */
.settings-container {
    max-width: 900px;
}

.settings-nav {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0;
}

.settings-nav-item {
    padding: 12px 20px;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all 0.2s;
}

.settings-nav-item:hover {
    color: var(--text);
}

.settings-nav-item.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.settings-panel {
    display: none;
}

.settings-panel.active {
    display: block;
}

.settings-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    margin-bottom: 20px;
}

.settings-card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--divider);
}

.settings-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.settings-card-title {
    flex: 1;
}

.settings-card-title h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text);
}

.settings-card-title p {
    font-size: 13px;
    color: var(--text-muted);
}

.settings-row {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 24px;
    padding: 20px 0;
    border-bottom: 1px solid var(--divider);
}

.settings-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.settings-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
}

.settings-label .desc {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 400;
    margin-top: 4px;
}

.settings-control {
    display: flex;
    align-items: center;
    gap: 12px;
}

.settings-control input[type="text"],
.settings-control input[type="password"],
.settings-control input[type="number"],
.settings-control select {
    flex: 1;
    max-width: 400px;
}

.settings-control .tag {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.settings-control .tag.success {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
}

.settings-control .tag.warning {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
}

/* 开关 */
.toggle-switch {
    position: relative;
    width: 48px;
    height: 26px;
    background: var(--border);
    border-radius: 13px;
    cursor: pointer;
    transition: background 0.3s;
}

.toggle-switch.active {
    background: var(--primary);
}

.toggle-switch::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 20px;
    height: 20px;
    background: #fff;
    border-radius: 50%;
    transition: transform 0.3s;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.toggle-switch.active::after {
    transform: translateX(22px);
}

/* ========== AI生成 ========== */
.ai-gen-form { 
    max-width: 700px; 
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 28px;
    border-radius: var(--radius);
}

.ai-result { 
    margin-top: 20px; 
    padding: 20px; 
    background: rgba(16, 185, 129, 0.05);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius);
    white-space: pre-wrap;
    font-size: 14px;
    max-height: 500px;
    overflow-y: auto;
}

/* ========== 快速操作 ========== */
.quick-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ========== 筛选器 ========== */
.filter-bar { display: flex; gap: 10px; }
.filter-bar select { 
    padding: 8px 14px; 
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    background: var(--bg-input);
    color: var(--text);
    cursor: pointer;
}

/* ========== 方向卡片 ========== */
.direction-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); 
    gap: 20px; 
}

.direction-card { 
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.direction-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--card-color, var(--primary)), var(--secondary));
}

.direction-card:hover { 
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-light);
}

.direction-card.inactive { opacity: 0.5; }

.direction-card .dir-icon { 
    font-size: 40px; 
    margin-bottom: 12px;
    display: block;
}

.direction-card .dir-name { 
    font-size: 18px; 
    font-weight: 600; 
    margin-bottom: 6px;
    color: var(--text);
}

.direction-card .dir-code { 
    font-size: 12px; 
    color: var(--text-muted);
    font-family: 'SF Mono', monospace;
    margin-bottom: 12px;
    padding: 4px 8px;
    background: var(--bg-elevated);
    border-radius: 4px;
    display: inline-block;
}

.direction-card .dir-desc { 
    font-size: 13px; 
    color: var(--text-secondary);
    line-height: 1.6;
    min-height: 40px;
    margin-bottom: 16px;
}

.direction-card .dir-tags { 
    display: flex; 
    flex-wrap: wrap; 
    gap: 6px; 
    margin-bottom: 16px;
}

.direction-card .dir-tag { 
    background: var(--bg-elevated);
    color: var(--text-secondary);
    font-size: 11px;
    padding: 4px 10px;
    border-radius: 12px;
}

.direction-card .dir-actions { 
    display: flex; 
    gap: 8px;
}

.badge-builtin { 
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 4px;
    margin-left: 8px;
}

.badge-inactive { 
    background: rgba(148, 163, 184, 0.15);
    color: #64748b;
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 4px;
    margin-left: 8px;
}

/* ========== Toast 动画 ========== */
@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}
@keyframes slideOut {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

/* ========== 图片上传 ========== */
.image-uploader {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 24px;
    background: var(--bg-input);
    cursor: pointer;
    text-align: center;
    min-height: 120px;
    transition: all 0.2s;
}

.image-uploader:hover, .image-uploader.dragover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.image-uploader-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 12px;
    justify-content: flex-start;
}

.image-thumb {
    position: relative;
    width: 100px;
    height: 100px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--bg-card);
}

.image-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.image-thumb-del {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(239, 68, 68, 0.9);
    color: white;
    border: none;
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.image-thumb-del:hover {
    background: #dc2626;
    transform: scale(1.1);
}

.image-uploader-hint {
    color: var(--text-muted);
    font-size: 13px;
}

/* ========== 内容方向分布图表 ========== */
.chart-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    min-height: 200px;
}

.chart-bar {
    display: flex;
    align-items: center;
    margin-bottom: 16px;
}

.chart-bar-label {
    width: 100px;
    font-size: 13px;
    color: var(--text-secondary);
}

.chart-bar-track {
    flex: 1;
    height: 8px;
    background: var(--bg-elevated);
    border-radius: 4px;
    overflow: hidden;
    margin: 0 16px;
}

.chart-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 4px;
    transition: width 0.5s ease;
}

.chart-bar-value {
    width: 40px;
    text-align: right;
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
}

/* ========== 视频列表 ========== */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.video-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.3s;
}

.video-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.video-thumb {
    aspect-ratio: 16/9;
    background: var(--bg-elevated);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    position: relative;
}

.video-thumb .play-btn {
    position: absolute;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    cursor: pointer;
    opacity: 0;
    transition: all 0.3s;
}

.video-card:hover .play-btn {
    opacity: 1;
}

.video-info {
    padding: 16px;
}

.video-title {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text);
}

.video-meta {
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    gap: 16px;
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .sidebar {
        width: 60px;
        padding: 16px 0;
    }
    .nav-item {
        padding: 12px;
        justify-content: center;
    }
    .nav-item span {
        display: none;
    }
    .content {
        padding: 16px;
    }
    .stat-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    .settings-row {
        grid-template-columns: 1fr;
    }
}

/* V1.2 Enterprise subtab styles */
.ent2-subtab { padding:10px 18px;background:none;border:none;border-bottom:2px solid transparent;cursor:pointer;font-size:14px;color:#6b7280;font-weight:500;margin-bottom:-2px;transition:all .15s; }
.ent2-subtab:hover { color:#3b82f6; }
.ent2-subtab.active { border-bottom-color:#3b82f6;color:#3b82f6;font-weight:600; }


/* ── V1.2 扁平菜单样式 ── */
.nav-section-title {
    padding: 16px 18px 8px;
    font-size: 11px;
    font-weight: 700;
    color: #9ca3af;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    list-style: none;
}
.nav-section-title:first-child {
    padding-top: 8px;
}
.nav-item-bottom {
    margin-top: 4px;
    border-top: 1px solid var(--border);
    border-radius: 0;
    padding-top: 14px;
}
.nav-item-bottom:hover {
    background: var(--bg-card-hover);
}