/* ============================================================
   admin.css — 管理后台样式
   主色：Indigo (#6366f1) —— 现代化 2025 后台风格
   支持 OSS CDN 加速
   ============================================================ */

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #eef2ff;
    --primary-lighter: #e0e7ff;
    --sidebar-bg: #ffffff;
    --sidebar-border: #f1f5f9;
    --text-dark: #0f172a;
    --text-muted: #475569;
    --bg-main: #f1f5f9;
    --card-shadow: 0 1px 3px rgba(0,0,0,.05), 0 2px 8px rgba(0,0,0,.04);
    --card-hover-shadow: 0 4px 16px rgba(0,0,0,.08), 0 8px 24px rgba(0,0,0,.06);
}

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; }
html, body { overflow-x: hidden; max-width: 100%; }
body {
    font-family: -apple-system, "Inter", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg-main);
    color: var(--text-dark);
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
}

/* 覆盖 Bootstrap 灰色文字 */
.text-muted, .text-secondary { color: var(--text-muted) !important; }
::placeholder { color: #94a3b8 !important; opacity: 1; }
code, kbd, samp { color: var(--text-dark) !important; background: transparent; padding: 0; font-size: inherit; }

/* ===== 侧边栏（桌面） ===== */
.sidebar-desktop {
    height: 100vh; background: var(--sidebar-bg);
    position: fixed; left: 0; top: 0;
    width: 220px; z-index: 1000;
    overflow-y: auto; overflow-x: hidden;
    overscroll-behavior: contain;
    border-right: 1px solid var(--sidebar-border);
    box-shadow: 2px 0 12px rgba(0,0,0,.04);
    transition: transform .22s ease, visibility .22s ease;
}
.sidebar-desktop::-webkit-scrollbar { width: 4px; }
.sidebar-desktop::-webkit-scrollbar-track { background: transparent; }
.sidebar-desktop::-webkit-scrollbar-thumb { background: #e2e8f0; border-radius: 2px; }
.sidebar-desktop::-webkit-scrollbar-thumb:hover { background: #cbd5e1; }
.sidebar-desktop { scrollbar-width: thin; scrollbar-color: #e2e8f0 transparent; }

.sidebar-brand {
    color: var(--primary);
    padding: 15px 16px;
    font-size: 1.1rem; font-weight: 800;
    border-bottom: 1px solid var(--sidebar-border);
    position: sticky; top: 0;
    background: var(--sidebar-bg);
    z-index: 2; letter-spacing: -0.03em;
    display: flex; align-items: center; gap: 9px;
}
.sidebar-brand .brand-dot {
    width: 28px; height: 28px; border-radius: 8px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff; display: flex; align-items: center; justify-content: center;
    font-size: 13px; flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(99,102,241,.3);
}

.sidebar-desktop .nav-link {
    color: var(--text-muted);
    padding: 7px 14px;
    border-left: 3px solid transparent;
    font-size: 0.83rem; font-weight: 500;
    transition: all .15s ease;
    border-radius: 0 8px 8px 0;
    margin: 1px 8px 1px 0;
    display: flex; align-items: center;
}
.sidebar-desktop .nav-link:hover {
    color: var(--primary-dark); background: var(--primary-light);
}
.sidebar-desktop .nav-link.active {
    color: var(--primary-dark); background: var(--primary-lighter);
    border-left-color: var(--primary); font-weight: 600;
}
.sidebar-desktop .nav-link i { margin-right: 7px; font-size: 1em; }

/* 折叠子菜单 */
.sidebar-desktop .nav-group-title {
    color: var(--text-muted); padding: 7px 14px; border-left: 3px solid transparent;
    display: flex; align-items: center; cursor: pointer; text-decoration: none;
    transition: all .15s; font-size: 0.83rem; font-weight: 500;
    border-radius: 0 8px 8px 0; margin: 1px 8px 1px 0;
}
.sidebar-desktop .nav-group-title:hover { color: var(--primary-dark); background: var(--primary-light); }
.sidebar-desktop .nav-group-title.active { color: var(--primary-dark); background: var(--primary-lighter); border-left-color: var(--primary); font-weight: 600; }
.sidebar-desktop .nav-group-title i { margin-right: 7px; font-size: 1em; }
.sidebar-desktop .nav-group-title .arrow { margin-left: auto; font-size: 0.7em; transition: transform .2s; }
.sidebar-desktop .nav-group-title[aria-expanded="true"] .arrow { transform: rotate(90deg); }
.sidebar-desktop .nav-sub { list-style: none; padding: 0; margin: 0; }
.sidebar-desktop .nav-sub .nav-link { padding-left: 36px; font-size: 0.82em; }

/* ===== Offcanvas 移动侧边栏 ===== */
.offcanvas-sidebar { background: #ffffff; width: 220px; }
.offcanvas-sidebar .offcanvas-body { overflow-y: auto; overscroll-behavior: contain; }
.offcanvas-sidebar .offcanvas-body::-webkit-scrollbar { width: 4px; }
.offcanvas-sidebar .offcanvas-body::-webkit-scrollbar-track { background: transparent; }
.offcanvas-sidebar .offcanvas-body::-webkit-scrollbar-thumb { background: #e2e8f0; border-radius: 2px; }
.offcanvas-sidebar { scrollbar-width: thin; scrollbar-color: #e2e8f0 transparent; }

.offcanvas-sidebar .nav-group-title {
    color: var(--text-muted); padding: 11px 20px; border-left: 3px solid transparent;
    display: flex; align-items: center; cursor: pointer; text-decoration: none;
    transition: all .15s; font-size: 0.9rem; font-weight: 500;
}
.offcanvas-sidebar .nav-group-title:hover { color: var(--primary-dark); background: var(--primary-light); }
.offcanvas-sidebar .nav-group-title.active { color: var(--primary-dark); background: var(--primary-lighter); border-left-color: var(--primary); }
.offcanvas-sidebar .nav-group-title i { margin-right: 10px; font-size: 1.1em; }
.offcanvas-sidebar .nav-group-title .arrow { margin-left: auto; font-size: 0.7em; transition: transform .2s; }
.offcanvas-sidebar .nav-group-title[aria-expanded="true"] .arrow { transform: rotate(90deg); }
.offcanvas-sidebar .nav-sub { list-style: none; padding: 0; margin: 0; }
.offcanvas-sidebar .nav-sub .nav-link { padding-left: 48px; font-size: 0.85em; }
.offcanvas-sidebar .nav-link {
    color: var(--text-muted); padding: 11px 20px; border-left: 3px solid transparent;
    font-size: 0.9rem; font-weight: 500; transition: all .15s;
}
.offcanvas-sidebar .nav-link:hover { color: var(--primary-dark); background: var(--primary-light); }
.offcanvas-sidebar .nav-link.active { color: var(--primary-dark); background: var(--primary-lighter); border-left-color: var(--primary); font-weight: 600; }
.offcanvas-sidebar .nav-link i { margin-right: 10px; font-size: 1.1em; }
.offcanvas-sidebar .sidebar-brand { color: var(--primary); padding: 20px; font-size: 1.2rem; font-weight: 800; border-bottom: 1px solid var(--sidebar-border); }

/* ===== 主内容区 ===== */
.main-wrapper { margin-left: 220px; transition: margin-left .22s ease; }
.main-content { background: var(--bg-main); min-height: 100vh; overflow-x: hidden; }

@media (min-width: 768px) {
    html.sidebar-collapsed .sidebar-desktop {
        transform: translateX(-100%);
        visibility: hidden;
        pointer-events: none;
    }
    html.sidebar-collapsed .main-wrapper { margin-left: 0; }
}

.top-bar {
    background: rgba(255,255,255,.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--sidebar-border);
    padding: 9px 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,.04);
    position: sticky; top: 0; z-index: 900;
}
.sidebar-toggle-btn {
    width: 32px; height: 32px;
    align-items: center; justify-content: center;
    padding: 0;
    border: 1px solid #e2e8f0;
    border-radius: 9px;
    color: #64748b;
    background: #fff;
    box-shadow: 0 1px 2px rgba(15,23,42,.04);
    transition: color .15s ease, background-color .15s ease, border-color .15s ease, transform .15s ease;
}
.sidebar-toggle-btn:hover {
    color: var(--primary-dark);
    background: var(--primary-light);
    border-color: #c7d2fe;
}
.sidebar-toggle-btn:focus-visible {
    outline: 0;
    box-shadow: 0 0 0 3px rgba(99,102,241,.18);
}
html.sidebar-collapsed .sidebar-toggle-btn i { transform: scaleX(-1); }
.sidebar-toggle-btn i { transition: transform .2s ease; }

/* ===== 筛选栏 ===== */
.filter-card, .filter-bar {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 10px 14px;
    margin-bottom: 12px;
    display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
}
.filter-card .form-control, .filter-card .form-select,
.filter-bar .form-control, .filter-bar .form-select,
.filter-bar input, .filter-bar select {
    height: 32px; padding: 0 10px;
    border: 1px solid #e2e8f0; border-radius: 8px;
    font-size: 0.82rem; transition: border-color .2s, box-shadow .2s;
}
.filter-bar input:focus, .filter-bar select:focus,
.filter-card .form-control:focus, .filter-card .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,.1);
    outline: none;
}
.search-input-wide { flex: 1; min-width: 220px; }
.filter-help { color: var(--text-muted); font-size: .78rem; }

/* ===== 数据卡片 ===== */
.stat-card {
    border: 1px solid #e8ecf0; border-radius: 12px;
    box-shadow: var(--card-shadow); background: #fff;
    transition: box-shadow .2s, transform .15s;
    overflow: hidden;
}
.stat-card:hover { box-shadow: var(--card-hover-shadow); transform: translateY(-2px); }
.stat-card .card-body { padding: 12px 14px; }
.stat-card .stat-icon {
    width: 34px; height: 34px; border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.95rem; flex-shrink: 0;
    background: var(--primary-light); color: var(--primary);
}
.stat-card .stat-value { font-size: 1.25rem; font-weight: 700; color: var(--text-dark); line-height: 1.1; margin-top: 2px; }
.stat-card .stat-label { font-size: 0.73rem; color: var(--text-muted); font-weight: 500; }
/* 移动端 stat-card 更紧凑 */
@media (max-width: 575.98px) {
    .stat-card .card-body { padding: 10px 12px; }
    .stat-card .stat-icon { width: 28px; height: 28px; font-size: 0.8rem; border-radius: 7px; }
    .stat-card .stat-value { font-size: 1.05rem; }
    .stat-card .stat-label { font-size: 0.7rem; }
}

/* ===== 表格 ===== */
.table th {
    font-weight: 600; font-size: 0.82rem; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 0.5px; border-bottom-width: 1px;
}
.table td { vertical-align: middle; }
.table-responsive {
    padding-bottom: 12px; -webkit-overflow-scrolling: touch;
}
.table-responsive::-webkit-scrollbar { height: 6px; }
.table-responsive::-webkit-scrollbar-track { background: var(--bg-main); border-radius: 4px; }
.table-responsive::-webkit-scrollbar-thumb { background: #e2e8f0; border-radius: 4px; }
.table-responsive::-webkit-scrollbar-thumb:hover { background: #cbd5e1; }
.table-responsive .dropdown-menu { z-index: 1050; }
.card-body.p-0 > .table-responsive { margin-bottom: 0; }

/* ===== 徽章 ===== */
.badge-pending    { background-color: #ede9fe; color: #6d28d9; }
.badge-confirmed  { background-color: #dbeafe; color: #1e40af; }
.badge-success    { background-color: #dcfce7; color: #166534; }
.badge-failed     { background-color: #fee2e2; color: #991b1b; }
.badge-expired    { background-color: #f1f5f9; color: #64748b; }
.badge-processing { background-color: #dbeafe; color: #1e40af; }
.badge-cancelled  { background-color: #f1f5f9; color: #64748b; }
.badge-refunded   { background-color: #f1f5f9; color: #64748b; }
.badge-refund     { background-color: #fee2e2; color: #991b1b; }
.badge-adjust     { background-color: #fef9c3; color: #92400e; }

/* ===== 卡片 ===== */
.chart-card { border: none; border-radius: 14px; box-shadow: var(--card-shadow); background: #fff; }
.chart-card .card-header { background: #fff; border-bottom: 1px solid var(--sidebar-border); font-weight: 600; border-radius: 14px 14px 0 0 !important; padding: 10px 16px; }
.content-area .card { border: 1px solid #e8ecf0; border-radius: 14px; box-shadow: var(--card-shadow); }
.content-area .card-header { background: #fff; border-bottom: 1px solid var(--sidebar-border); font-weight: 600; border-radius: 14px 14px 0 0 !important; font-size: 0.875rem; padding: 10px 16px; }

/* ===== 按钮 ===== */
.btn-primary { background: var(--primary); border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn-outline-primary { color: var(--primary); border-color: var(--primary); }
.btn-outline-primary:hover { background: var(--primary); border-color: var(--primary); color: #fff; }
.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,.1);
}
.form-check-input:checked { background-color: var(--primary); border-color: var(--primary); }
.page-link { color: var(--primary); }
.page-item.active .page-link { background-color: var(--primary); border-color: var(--primary); }
a { color: var(--primary); }
a:hover { color: var(--primary-dark); }

/* ===== 响应式表格/卡片切换 ===== */
.desktop-table-view { display: block; }
.mobile-card-view { display: none; }
@media (max-width: 991.98px) {
    .desktop-table-view { display: none !important; }
    .mobile-card-view { display: block !important; }
}

/* ===== 响应式移动端 ===== */
@media (max-width: 767.98px) {
    .sidebar-desktop { display: none !important; }
    .main-wrapper { margin-left: 0 !important; }
    .top-bar { padding: 10px 16px; }
    .content-area { padding: 16px !important; }
}

/* ===== 滚动条（后台面板） ===== */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #e2e8f0; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #cbd5e1; }