/**
 * 后台 · 大气版视觉增强（依赖 style.css 设计 token）
 */
:root {
    --admin-sidebar-w: 272px;
    --admin-page-max: 1560px;
    --admin-head-radius: 20px;
}

.admin-layout {
    background:
        radial-gradient(ellipse 80% 50% at 100% -20%, rgba(8, 49, 203, 0.07), transparent 55%),
        radial-gradient(ellipse 60% 40% at 0% 100%, rgba(59, 111, 224, 0.05), transparent 50%),
        var(--bg-page);
}

.admin-sidebar {
    border-right: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: 16px 0 48px rgba(4, 12, 32, 0.22);
}

.admin-sidebar .logo {
    padding: 24px 22px 20px;
}

.admin-menu li a {
    padding: 10px 14px;
    margin: 3px 12px;
    border-radius: 12px;
    font-size: 14px;
}

.admin-menu li a.active {
    background: linear-gradient(105deg, rgba(8, 49, 203, 0.62) 0%, rgba(59, 111, 224, 0.2) 100%);
    box-shadow: 0 4px 16px rgba(8, 49, 203, 0.25), inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.admin-menu li.menu-group {
    padding: 22px 24px 10px;
    letter-spacing: 0.14em;
}

.admin-menu .menu-dropdown-toggle .menu-label {
    font-weight: 500;
}

.admin-menu .menu-section-toggle {
    letter-spacing: 0.12em;
}

.admin-menu .menu-dropdown-sub {
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
}

.admin-main {
    background: transparent;
}

.admin-topbar {
    height: 72px;
    padding: 0 32px;
    background: color-mix(in srgb, var(--bg-surface) 78%, transparent);
    backdrop-filter: blur(20px) saturate(1.2);
    border-bottom: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
}

.topbar-crumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 12px;
    color: var(--text-3);
    margin-top: 2px;
    max-width: min(520px, 55vw);
}

.topbar-crumb-sep {
    opacity: 0.45;
    user-select: none;
}

.topbar-crumb-current {
    color: var(--text-2);
    font-weight: 600;
}

.admin-topbar .topbar-headings {
    min-width: 0;
    flex: 1;
}

.admin-topbar .topbar-title {
    font-size: 19px;
    letter-spacing: 0.01em;
}

.admin-page {
    width: 100%;
    max-width: var(--admin-page-max);
    margin: 0 auto;
}

.admin-content {
    padding: 32px 40px 48px;
}

/* 页头 */
.page-head {
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 28px;
    padding: 26px 32px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--admin-head-radius);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
    gap: 16px 24px;
}

.page-head::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--brand-grad);
    border-radius: var(--admin-head-radius) 0 0 var(--admin-head-radius);
}

.page-head::after {
    content: "";
    position: absolute;
    right: -80px;
    top: -80px;
    width: 220px;
    height: 220px;
    background: radial-gradient(circle, rgba(8, 49, 203, 0.08), transparent 70%);
    pointer-events: none;
}

.page-head-inner {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px 24px;
    width: 100%;
    position: relative;
    z-index: 1;
}

.page-head-copy {
    position: relative;
    z-index: 1;
    min-width: 0;
    flex: 1;
}

.page-head:not(:has(.page-head-inner)) {
    display: flex;
    align-items: center;
}

.page-head h1 {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.25;
    margin: 0;
}

.page-kicker {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--brand-1);
    margin: 0 0 8px;
    padding: 4px 10px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--brand-1) 8%, var(--bg-subtle));
    border: 1px solid color-mix(in srgb, var(--brand-1) 18%, transparent);
}

.page-desc,
.page-head .muted {
    margin: 10px 0 0;
    font-size: 14px;
    line-height: 1.55;
    color: var(--text-2);
    max-width: 52rem;
}

.page-head .head-actions {
    position: relative;
    z-index: 1;
    margin-left: auto;
    flex-shrink: 0;
}

.page-head.composer-head {
    align-items: flex-start;
}

/* 卡片与表格 */
.admin-card {
    border-radius: var(--admin-head-radius);
    padding: 28px 32px;
    box-shadow: var(--shadow-md);
    border: 1px solid color-mix(in srgb, var(--border) 90%, transparent);
}

.admin-card h2 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.crud-toolbar {
    border-radius: 16px;
    padding: 20px 22px 18px;
    margin-bottom: 22px;
    box-shadow: var(--shadow-sm);
}

.data-table thead th {
    background: var(--bg-subtle);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-3);
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
}

.data-table tbody td {
    padding: 14px 16px;
    vertical-align: middle;
}

.data-table tbody tr {
    transition: background 0.15s;
}

.data-table tbody tr:hover {
    background: var(--bg-hover);
}

/* 统计卡 */
.stats-grid {
    gap: 20px;
    margin-bottom: 28px;
}

.stat-card {
    border-radius: var(--admin-head-radius);
    padding: 24px 22px 22px;
}

.stat-card .num {
    font-size: 32px;
}

/* 控制台 */
.dash-hero {
    margin-bottom: 28px;
    padding: 36px 40px;
    border-radius: var(--admin-head-radius);
    box-shadow: var(--shadow-lg);
}

.dash-hero h1 {
    font-size: 30px;
    letter-spacing: -0.02em;
}

.dash-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    flex-shrink: 0;
}

.dash-hero .btn-primary {
    background: #fff;
    color: var(--brand-1);
    border-color: transparent;
}

.dash-hero .btn-primary:hover {
    background: rgba(255, 255, 255, 0.92);
}

.quick-links {
    gap: 12px;
    margin-bottom: 28px;
}

.quick-link {
    border-radius: 14px;
    padding: 14px 20px;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.dashboard-grid {
    gap: 24px;
}

/* 按钮 */
.btn-primary {
    box-shadow: 0 4px 14px rgba(8, 49, 203, 0.28);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(8, 49, 203, 0.35);
}

.user-dropdown {
    border-radius: 14px;
    box-shadow: var(--shadow-pop);
    padding: 10px;
}

.update-panel {
    margin-bottom: 28px;
}

.update-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-bottom: 18px;
}

.update-version-tag {
    font-size: 14px;
    color: var(--text-2);
    padding: 8px 14px;
    border-radius: 999px;
    background: var(--bg-subtle);
    border: 1px solid var(--border);
}

.update-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 8px;
}

.update-result {
    margin-top: 20px;
    padding: 18px 20px;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: var(--bg-subtle);
    font-size: 14px;
}

.update-result--success {
    border-color: color-mix(in srgb, var(--color-success) 35%, var(--border));
    background: color-mix(in srgb, var(--color-success) 6%, var(--bg-subtle));
}

.update-result--error {
    border-color: color-mix(in srgb, var(--color-danger) 35%, var(--border));
    background: color-mix(in srgb, var(--color-danger) 6%, var(--bg-subtle));
}

.update-list {
    margin: 12px 0 0;
    padding-left: 1.2em;
    color: var(--text-2);
}

.update-changelog {
    margin-top: 14px;
}

.update-changelog h3 {
    font-size: 13px;
    margin-bottom: 8px;
    color: var(--text-2);
}

.update-changelog pre {
    white-space: pre-wrap;
    word-break: break-word;
    font-size: 13px;
    line-height: 1.55;
    padding: 12px 14px;
    border-radius: 10px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    max-height: 240px;
    overflow: auto;
}

.update-warn {
    margin: 14px 0 12px;
    color: var(--color-warning);
    font-weight: 600;
}

@media (max-width: 960px) {
    .admin-content {
        padding: 20px 16px 32px;
    }

    .page-head {
        padding: 20px 18px 20px 22px;
    }

    .page-head h1 {
        font-size: 22px;
    }

    .topbar-crumb {
        display: none;
    }

    .dash-hero {
        padding: 24px 20px;
        flex-direction: column;
        align-items: flex-start;
    }
}