/* ============================================================
   管理后台 UI - 蓝白渐变玻璃拟态主题
   配色：清爽蓝白 + 玻璃拟态 + 柔和渐变背景
   ============================================================ */

/* ---------- CSS 变量 ---------- */
:root {
    /* 背景 - 浅蓝白柔和渐变 */
    --bg-gradient: linear-gradient(135deg, #eff6ff 0%, #e0f2fe 40%, #dbeafe 70%, #ede9fe 100%);
    --bg-overlay: rgba(255, 255, 255, 0.3);

    /* 玻璃拟态 - 白/浅蓝半透明 */
    --glass-bg: rgba(255, 255, 255, 0.55);
    --glass-bg-hover: rgba(255, 255, 255, 0.75);
    --glass-bg-strong: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-border-hover: rgba(255, 255, 255, 0.7);
    --glass-blur: blur(16px);
    --glass-shadow: 0 8px 32px rgba(30, 58, 138, 0.08);

    /* 侧边栏 - 清爽深蓝（不透明，保证可读性） */
    --sidebar-bg: linear-gradient(180deg, #1e3a8a 0%, #1e40af 100%);
    --sidebar-border: rgba(255, 255, 255, 0.1);
    --sidebar-glow-1: rgba(59, 130, 246, 0.15);
    --sidebar-glow-2: rgba(96, 165, 250, 0.1);

    /* 文字 - 深灰蓝 */
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-faint: #b9c7da;

    /* 主色 - 清爽天蓝 */
    --accent: #0ea5e9;
    --accent-strong: #0284c7;
    --accent-hover: #38bdf8;
    --accent-gradient: linear-gradient(135deg, #0ea5e9 0%, #3b82f6 100%);
    --accent-gradient-hover: linear-gradient(135deg, #38bdf8 0%, #60a5fa 100%);
    --accent-glow: rgba(14, 165, 233, 0.25);
    --accent-light: rgba(14, 165, 233, 0.12);

    /* 状态色 - 清新明亮 */
    --success: #16a34a;
    --success-light: rgba(22, 163, 74, 0.12);
    --warning: #d97706;
    --warning-light: rgba(217, 119, 6, 0.12);
    --danger: #dc2626;
    --danger-light: rgba(220, 38, 38, 0.12);
    --info: #0891b2;
    --info-light: rgba(8, 145, 178, 0.12);

    /* 布局 */
    --sidebar-width: 250px;
    --radius: 14px;
    --radius-sm: 8px;
    --radius-lg: 20px;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 14px; -webkit-font-smoothing: antialiased; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg-gradient);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}
/* 背景装饰光晕 - 柔和蓝紫 */
body::before {
    content: '';
    position: fixed;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
    top: -150px; right: -80px;
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
}
body::after {
    content: '';
    position: fixed;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.08) 0%, transparent 70%);
    bottom: -100px; left: -80px;
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
}
a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-strong); }
img { max-width: 100%; }

/* ---------- 布局 ---------- */
.app-layout { display: flex; min-height: 100vh; position: relative; z-index: 1; }

/* 侧边栏 - 深蓝渐变（保留清爽对比） */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 100;
    overflow-y: auto;
    overflow-x: hidden;
    box-shadow: 4px 0 24px rgba(30, 58, 138, 0.15);
    border-right: 1px solid var(--sidebar-border);
}
.sidebar-brand {
    padding: 22px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--sidebar-border);
    position: relative;
    z-index: 1;
}
.sidebar-brand .logo {
    width: 40px; height: 40px;
    background: var(--accent-gradient);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 1.2rem; color: #fff;
    box-shadow: 0 4px 16px rgba(14, 165, 233, 0.35);
}
.sidebar-brand .brand-text {
    font-size: 1.1rem; font-weight: 700;
    color: #fff;
    letter-spacing: 0.02em;
}
.sidebar-nav { flex: 1; padding: 14px 12px; position: relative; z-index: 1; }
.nav-section {
    font-size: 0.68rem; font-weight: 700;
    color: rgba(255, 255, 255, 0.4);
    text-transform: uppercase; letter-spacing: 0.1em;
    padding: 16px 12px 8px;
}
.nav-item { margin-bottom: 3px; }
.nav-link {
    display: flex; align-items: center; gap: 11px;
    padding: 10px 13px;
    border-radius: 10px;
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.88rem; font-weight: 500;
    transition: var(--transition);
    position: relative;
}
.nav-link::before {
    content: '';
    position: absolute;
    left: 0; top: 50%;
    transform: translateY(-50%) scaleY(0);
    width: 3px; height: 60%;
    background: var(--accent-gradient);
    border-radius: 0 3px 3px 0;
    transition: transform 0.25s ease;
}
.nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    transform: translateX(3px);
}
.nav-link:hover::before { transform: translateY(-50%) scaleY(1); }
.nav-link.active {
    background: rgba(255, 255, 255, 0.18);
    color: #fff;
    font-weight: 600;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.1);
}
.nav-link.active::before { transform: translateY(-50%) scaleY(1); }
.nav-link.active i { color: #93c5fd; }
.nav-link i {
    font-size: 1.05rem; width: 20px; text-align: center;
    opacity: 0.85;
    transition: var(--transition);
}
.nav-link:hover i { opacity: 1; }
.sidebar-footer {
    padding: 14px 12px;
    border-top: 1px solid var(--sidebar-border);
    position: relative;
    z-index: 1;
}
.sidebar-footer .nav-link { color: rgba(255, 255, 255, 0.5); }
.sidebar-footer .nav-link:hover { color: #fff; background: rgba(255, 255, 255, 0.1); }

/* 侧边栏遮罩 */
.sidebar-overlay {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(4px);
    z-index: 99;
}

/* 主内容区 */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* 顶部栏 - 玻璃拟态（白透） */
.topbar {
    height: 60px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    position: sticky;
    top: 0;
    z-index: 50;
}
.topbar-btn {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    font-size: 1.3rem; color: var(--text-secondary);
    cursor: pointer; padding: 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}
.topbar-btn:hover { background: var(--glass-bg-hover); color: var(--text-primary); border-color: var(--glass-border-hover); }
.topbar-title {
    font-size: 1.1rem; font-weight: 700;
    color: var(--text-primary);
}
.topbar-actions { display: flex; align-items: center; gap: 14px; }

/* 页面内容 */
.page-content {
    flex: 1;
    padding: 28px;
    position: relative;
    z-index: 1;
}

/* ---------- 通用工具 ---------- */
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 6px; }
.gap-2 { gap: 12px; }
.gap-3 { gap: 18px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.fw-600 { font-weight: 600; }
.me-1 { margin-right: 6px; }
.me-2 { margin-right: 12px; }
.w-100 { width: 100%; }

/* ---------- 玻璃卡片 ---------- */
.card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 22px;
    margin-bottom: 18px;
    box-shadow: var(--glass-shadow);
    transition: var(--transition);
}
.card:hover {
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-hover);
    box-shadow: 0 8px 40px rgba(30, 58, 138, 0.1);
}
.card-header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 18px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--glass-border);
}
.card-title {
    font-size: 1.05rem; font-weight: 700;
    color: var(--text-primary);
    display: flex; align-items: center; gap: 10px;
}
.card-title i { color: var(--accent); }

/* ---------- 统计卡片 - 玻璃 ---------- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 18px;
    margin-bottom: 22px;
}
.stat-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 22px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    transition: var(--transition);
    box-shadow: var(--glass-shadow);
}
.stat-card:hover {
    transform: translateY(-4px);
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-hover);
    box-shadow: 0 12px 40px rgba(30, 58, 138, 0.12);
}
.stat-icon {
    width: 52px; height: 52px;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
}
.stat-icon.blue { background: var(--accent-light); color: var(--accent); }
.stat-icon.green { background: var(--success-light); color: var(--success); }
.stat-icon.orange { background: var(--warning-light); color: var(--warning); }
.stat-icon.red { background: var(--danger-light); color: var(--danger); }
.stat-icon.cyan { background: var(--info-light); color: var(--info); }
.stat-info { flex: 1; min-width: 0; }
.stat-label {
    font-size: 0.78rem; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 0.05em;
    margin-bottom: 6px;
    font-weight: 600;
}
.stat-value {
    font-size: 1.7rem; font-weight: 800;
    color: var(--text-primary);
    line-height: 1.2;
}
.stat-sub {
    font-size: 0.8rem; color: var(--text-muted);
    margin-top: 4px;
}

/* ---------- 玻璃表格 ---------- */
.table-wrapper {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 18px;
    box-shadow: var(--glass-shadow);
}
.table {
    width: 100%;
    border-collapse: collapse;
}
.table thead {
    background: rgba(255, 255, 255, 0.3);
    border-bottom: 1px solid var(--glass-border);
}
.table th {
    padding: 14px 18px;
    text-align: left;
    font-size: 0.76rem; font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase; letter-spacing: 0.06em;
    white-space: nowrap;
}
.table td {
    padding: 14px 18px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
    font-size: 0.88rem;
    color: var(--text-primary);
    vertical-align: middle;
}
.table tbody tr { transition: var(--transition); }
.table tbody tr:hover { background: rgba(255, 255, 255, 0.3); }
.table tbody tr:last-child td { border-bottom: none; }
.table .actions { display: flex; gap: 6px; flex-wrap: wrap; }

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 7px;
    padding: 9px 18px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-size: 0.86rem; font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    line-height: 1.4;
    white-space: nowrap;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary {
    background: var(--accent-gradient);
    color: #fff;
    border: none;
    box-shadow: 0 4px 14px var(--accent-glow);
}
.btn-primary:hover:not(:disabled) {
    background: var(--accent-gradient-hover);
    color: #fff;
    box-shadow: 0 6px 20px var(--accent-glow);
    transform: translateY(-1px);
}
.btn-secondary {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(8px);
}
.btn-secondary:hover:not(:disabled) {
    background: var(--glass-bg-hover);
    border-color: var(--accent);
    color: var(--accent-strong);
}
.btn-success {
    background: var(--success); color: #fff; border: none;
    box-shadow: 0 4px 14px rgba(22, 163, 74, 0.3);
}
.btn-success:hover:not(:disabled) { background: #15803d; color: #fff; transform: translateY(-1px); }
.btn-warning {
    background: var(--warning); color: #fff; border: none;
    box-shadow: 0 4px 14px rgba(217, 119, 6, 0.3);
}
.btn-warning:hover:not(:disabled) { background: #b45309; color: #fff; transform: translateY(-1px); }
.btn-danger {
    background: var(--danger); color: #fff; border: none;
    box-shadow: 0 4px 14px rgba(220, 38, 38, 0.3);
}
.btn-danger:hover:not(:disabled) { background: #b91c1c; color: #fff; transform: translateY(-1px); }
.btn-sm { padding: 6px 12px; font-size: 0.8rem; }
.btn-lg { padding: 11px 26px; font-size: 0.95rem; }
.btn-outline {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
}
.btn-outline:hover:not(:disabled) {
    border-color: var(--accent);
    color: var(--accent-strong);
    background: var(--accent-light);
}
.btn-icon {
    width: 34px; height: 34px;
    padding: 0;
    border-radius: var(--radius-sm);
}

/* ---------- 玻璃表单 ---------- */
.form-group { margin-bottom: 18px; }
.form-label {
    display: block;
    font-size: 0.85rem; font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 7px;
}
.form-label .required { color: var(--danger); margin-left: 3px; }
.form-control {
    width: 100%;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    color: var(--text-primary);
    transition: var(--transition);
    outline: none;
    backdrop-filter: blur(8px);
}
.form-control:focus {
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.8);
    box-shadow: 0 0 0 3px var(--accent-light);
}
.form-control::placeholder { color: var(--text-muted); }
.form-control:disabled { background: rgba(255,255,255,0.3); cursor: not-allowed; color: var(--text-muted); }
textarea.form-control { resize: vertical; min-height: 90px; }
select.form-control { cursor: pointer; }
.form-hint {
    font-size: 0.78rem; color: var(--text-muted);
    margin-top: 5px;
}
.form-error {
    font-size: 0.78rem; color: var(--danger);
    margin-top: 5px;
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}
.form-row-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 18px;
}
.form-check {
    display: flex; align-items: center; gap: 9px;
    cursor: pointer;
}
.form-check input[type="checkbox"], .form-check input[type="radio"] {
    width: 17px; height: 17px;
    accent-color: var(--accent-strong);
    cursor: pointer;
}
.form-check label { font-size: 0.88rem; color: var(--text-secondary); cursor: pointer; }

/* ---------- 徽章 ---------- */
.badge {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 4px 11px;
    border-radius: 20px;
    font-size: 0.75rem; font-weight: 700;
    line-height: 1.4;
    backdrop-filter: blur(8px);
}
.badge-success { background: var(--success-light); color: var(--success); border: 1px solid rgba(22,163,74,0.2); }
.badge-warning { background: var(--warning-light); color: var(--warning); border: 1px solid rgba(217,119,6,0.2); }
.badge-danger { background: var(--danger-light); color: var(--danger); border: 1px solid rgba(220,38,38,0.2); }
.badge-info { background: var(--info-light); color: var(--info); border: 1px solid rgba(8,145,178,0.2); }
.badge-primary { background: var(--accent-light); color: var(--accent-strong); border: 1px solid rgba(14,165,233,0.2); }
.badge-secondary { background: var(--glass-bg); color: var(--text-muted); border: 1px solid var(--glass-border); }
.badge-gray { background: rgba(255,255,255,0.3); color: var(--text-muted); border: 1px solid var(--glass-border); }

/* 状态点 */
.status-dot {
    display: inline-block;
    width: 9px; height: 9px;
    border-radius: 50%;
    margin-right: 6px;
}
.status-dot.online { background: var(--success); box-shadow: 0 0 10px rgba(22,163,74,0.4); animation: pulse 2s infinite; }
.status-dot.offline { background: var(--text-muted); }
.status-dot.warning { background: var(--warning); box-shadow: 0 0 8px rgba(217,119,6,0.4); }

/* ---------- 分页 ---------- */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    margin-top: 18px;
    flex-wrap: wrap;
}
.pagination a, .pagination span {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 36px; height: 36px;
    padding: 0 11px;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: var(--glass-bg);
    backdrop-filter: blur(8px);
    transition: var(--transition);
}
.pagination a:hover {
    border-color: var(--accent);
    color: var(--accent-strong);
    background: var(--accent-light);
    transform: translateY(-1px);
}
.pagination .active {
    background: var(--accent-gradient);
    border-color: transparent;
    color: #fff;
    font-weight: 700;
    box-shadow: 0 4px 14px var(--accent-glow);
}
.pagination .disabled { opacity: 0.4; cursor: not-allowed; }
.pagination-info {
    text-align: center;
    font-size: 0.8rem; color: var(--text-muted);
    margin-top: 10px;
}

/* ---------- 提示框 ---------- */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    margin-bottom: 18px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.88rem;
    border: 1px solid transparent;
    backdrop-filter: blur(10px);
}
.alert i { margin-top: 2px; flex-shrink: 0; font-size: 1.1rem; }
.alert-success { background: var(--success-light); color: #166534; border-color: rgba(22,163,74,0.2); }
.alert-warning { background: var(--warning-light); color: #92400e; border-color: rgba(217,119,6,0.2); }
.alert-danger { background: var(--danger-light); color: #991b1b; border-color: rgba(220,38,38,0.2); }
.alert-info { background: var(--info-light); color: #155e75; border-color: rgba(8,145,178,0.2); }

/* ---------- 空状态 ---------- */
.empty-state {
    text-align: center;
    padding: 56px 24px;
    color: var(--text-muted);
}
.empty-state i {
    font-size: 3.2rem;
    margin-bottom: 16px;
    opacity: 0.4;
    color: var(--accent);
}
.empty-state h3 {
    font-size: 1.05rem; font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 8px;
}
.empty-state p { font-size: 0.88rem; }

/* ---------- 玻璃筛选栏 ---------- */
.filter-bar {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 18px;
    margin-bottom: 18px;
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: flex-end;
    box-shadow: var(--glass-shadow);
}
.filter-bar .form-group { margin-bottom: 0; min-width: 170px; }
.filter-bar .form-group.flex-1 { flex: 1; min-width: 210px; }

/* ---------- 操作按钮组 ---------- */
.action-group {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

/* ---------- 图表容器 ---------- */
.chart-container {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 22px;
    margin-bottom: 18px;
    box-shadow: var(--glass-shadow);
}
.chart-container canvas { max-height: 300px; }

/* ---------- 进度条 ---------- */
.progress {
    width: 100%;
    height: 9px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 5px;
    overflow: hidden;
}
.progress-bar {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 5px;
    transition: width 0.3s ease;
}
.progress-bar.success { background: linear-gradient(90deg, var(--success), #22c55e); }
.progress-bar.warning { background: linear-gradient(90deg, var(--warning), #f59e0b); }
.progress-bar.danger { background: linear-gradient(90deg, var(--danger), #ef4444); }

/* ---------- 代码块 ---------- */
.code-block {
    background: rgba(15, 23, 42, 0.8);
    color: #e2e8f0;
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    font-family: "Consolas", "Monaco", monospace;
    font-size: 0.82rem;
    overflow-x: auto;
    word-break: break-all;
    border: 1px solid var(--glass-border);
}

/* ---------- 复制按钮 ---------- */
.copy-btn {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-muted);
    padding: 5px 9px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.78rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 5px;
    backdrop-filter: blur(8px);
}
.copy-btn:hover {
    background: var(--accent-light);
    border-color: var(--accent);
    color: var(--accent-strong);
}

/* ---------- 玻璃模态框 ---------- */
.modal-overlay {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(6px);
    z-index: 200;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.modal-overlay.show { display: flex; }
.modal {
    background: var(--glass-bg-strong);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border-hover);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 440px;
    box-shadow: 0 24px 60px rgba(30, 58, 138, 0.15);
    animation: modalIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}
.modal-header {
    padding: 18px 22px;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.modal-title {
    font-size: 1.05rem; font-weight: 700;
    color: var(--text-primary);
}
.modal-close {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    font-size: 1.2rem; color: var(--text-muted);
    cursor: pointer; padding: 5px;
    border-radius: 6px;
    transition: var(--transition);
}
.modal-close:hover { background: var(--danger-light); color: var(--danger); border-color: var(--danger); }
.modal-body { padding: 22px; }
.modal-body p { color: var(--text-secondary); font-size: 0.92rem; margin-bottom: 10px; }
.modal-footer {
    padding: 16px 22px;
    border-top: 1px solid var(--glass-border);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* ---------- 玻璃 Toast ---------- */
.toast-container {
    position: fixed;
    top: 24px; right: 24px;
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.toast {
    background: var(--glass-bg-strong);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border-hover);
    border-left: 4px solid var(--accent);
    border-radius: var(--radius);
    padding: 14px 18px;
    min-width: 300px;
    max-width: 400px;
    box-shadow: 0 12px 40px rgba(30, 58, 138, 0.12);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    animation: toastIn 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.toast.success { border-left-color: var(--success); }
.toast.warning { border-left-color: var(--warning); }
.toast.error { border-left-color: var(--danger); }
.toast i { margin-top: 2px; flex-shrink: 0; font-size: 1.15rem; }
.toast.success i { color: var(--success); }
.toast.warning i { color: var(--warning); }
.toast.error i { color: var(--danger); }
.toast-content { flex: 1; }
.toast-title { font-size: 0.9rem; font-weight: 700; color: var(--text-primary); margin-bottom: 3px; }
.toast-message { font-size: 0.83rem; color: var(--text-secondary); }
.toast-close {
    background: none; border: none;
    color: var(--text-muted); cursor: pointer;
    font-size: 1.1rem; padding: 0;
    flex-shrink: 0;
}

/* ---------- 动画 ---------- */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}
@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
@keyframes modalIn {
    from { opacity: 0; transform: scale(0.92) translateY(-15px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}
@keyframes toastIn {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}
.fade-in { animation: fadeIn 0.35s ease; }

/* ---------- 加载中 ---------- */
.loading {
    display: inline-block;
    width: 18px; height: 18px;
    border: 2px solid rgba(0, 0, 0, 0.1);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ---------- 登录页 - 蓝白玻璃 ---------- */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-gradient);
    padding: 20px;
    position: relative;
    overflow: hidden;
}
.login-page::before {
    content: '';
    position: absolute;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.12) 0%, transparent 70%);
    top: -200px; right: -100px;
    border-radius: 50%;
}
.login-page::after {
    content: '';
    position: absolute;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.08) 0%, transparent 70%);
    bottom: -150px; left: -80px;
    border-radius: 50%;
}
.login-card {
    background: var(--glass-bg-strong);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--glass-border-hover);
    border-radius: var(--radius-lg);
    box-shadow: 0 24px 60px rgba(30, 58, 138, 0.12);
    padding: 40px;
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 1;
    animation: fadeIn 0.5s ease;
}
.login-logo {
    width: 64px; height: 64px;
    background: var(--accent-gradient);
    border-radius: 16px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.7rem; font-weight: 800; color: #fff;
    margin: 0 auto 20px;
    box-shadow: 0 8px 30px var(--accent-glow);
}
.login-title {
    text-align: center;
    font-size: 1.5rem; font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 6px;
}
.login-subtitle {
    text-align: center;
    font-size: 0.9rem; color: var(--text-muted);
    margin-bottom: 32px;
}
.login-form .form-group { margin-bottom: 20px; }
.login-form .form-label { font-weight: 700; color: var(--text-secondary); }
.login-form .form-control {
    padding: 12px 16px;
    font-size: 0.95rem;
    background: rgba(255, 255, 255, 0.5);
}
.login-form .btn-primary {
    width: 100%;
    padding: 13px;
    font-size: 1rem;
    font-weight: 700;
    margin-top: 10px;
    box-shadow: 0 6px 24px var(--accent-glow);
}
.login-error {
    background: var(--danger-light);
    color: var(--danger);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    border: 1px solid rgba(220,38,38,0.2);
}
.password-toggle { position: relative; }
.password-toggle .toggle-btn {
    position: absolute;
    right: 12px; top: 50%;
    transform: translateY(-50%);
    background: none; border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 4px;
    transition: var(--transition);
}
.password-toggle .toggle-btn:hover { color: var(--accent-strong); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .sidebar.open { transform: translateX(0); }
    .sidebar-overlay.show { display: block; }
    .main-content { margin-left: 0; }
    .topbar-btn[data-sidebar-toggle] { display: inline-flex !important; }
}
@media (max-width: 768px) {
    .page-content { padding: 18px; }
    .stats-grid { grid-template-columns: 1fr; }
    .form-row, .form-row-3 { grid-template-columns: 1fr; }
    .table-wrapper { overflow-x: auto; }
    .table { min-width: 600px; }
    .filter-bar { flex-direction: column; }
    .filter-bar .form-group { width: 100%; }
    .card { padding: 18px; }
    .topbar { padding: 0 18px; }
}
@media (max-width: 480px) {
    .topbar { padding: 0 14px; }
    .topbar-title { font-size: 1rem; }
    .login-card { padding: 28px 22px; }
    .btn { padding: 8px 14px; font-size: 0.82rem; }
    .page-content { padding: 14px; }
}

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.3);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover { background: rgba(148, 163, 184, 0.5); }
.sidebar::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.15); }
.sidebar::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.25); }