/*
 * app.css
 * 用途：全站样式（支持深色/浅色切换）。
 */

:root {
    --bg-main: #0b1220;
    --bg-surface: #121b2e;
    --bg-surface-2: #0f1728;
    --bg-soft: #101a2d;
    --border: #24344f;
    --text-main: #e5e7eb;
    --text-dim: #9ca3af;
    --text-muted: #8fa2bd;
    --link: #70b7ff;
    --sidebar-link: #c9d1db;
}

body.theme-light {
    --bg-main: #f3f6fb;
    --bg-surface: #ffffff;
    --bg-surface-2: #f8fbff;
    --bg-soft: #eef4ff;
    --border: #d5e0f0;
    --text-main: #1f2937;
    --text-dim: #4b5563;
    --text-muted: #64748b;
    --link: #1d4ed8;
    --sidebar-link: #243145;
}

* {
    box-sizing: border-box;
}

body {
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
}

.app-body {
    margin: 0;
}

.app-shell {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background: var(--bg-soft);
    border-right: 1px solid var(--border);
    padding: 20px 16px;
    display: flex;
    flex-direction: column;
}

.brand-block {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-logo {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, #0d6efd, #24a3ff);
    overflow: hidden;
    color: #fff;
    font-size: 20px;
}

.brand-logo-icon {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.08);
    display: block;
}

.brand-title {
    font-weight: 700;
}

.sidebar-nav .nav-link {
    color: var(--sidebar-link);
    border-radius: 10px;
    margin-bottom: 8px;
    padding: 10px 12px;
    transition: all 0.2s ease;
}

.sidebar-nav .nav-link:hover {
    background: rgba(13, 110, 253, 0.12);
    color: var(--text-main);
}

.sidebar-nav .nav-link.active {
    background: rgba(13, 110, 253, 0.2);
    color: var(--text-main);
    border: 1px solid rgba(34, 143, 255, 0.4);
}

.sidebar-foot {
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.main-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.topbar {
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.page-title {
    font-size: 1.1rem;
    color: var(--text-main);
}

.content-area {
    padding: 20px;
}

.app-footer {
    border-top: 1px solid var(--border);
    padding: 12px 20px 16px;
    color: var(--text-dim);
    background: var(--bg-surface);
}

.card-dark {
    background: linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-surface-2) 100%);
    border: 1px solid var(--border);
    color: var(--text-main);
}

.card-dark .card-header {
    background: transparent;
    border-bottom: 1px solid var(--border);
    color: var(--text-main);
    font-weight: 600;
}

.stat-card {
    background: linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-surface-2) 100%);
    border: 1px solid var(--border);
    color: var(--text-main);
}

.stat-title {
    color: var(--text-muted);
    font-size: 0.92rem;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1.2;
    margin-top: 4px;
}

.stat-meta {
    color: var(--text-dim);
    font-size: 0.82rem;
    margin-top: 2px;
}

.table-dark {
    --bs-table-color: var(--text-main);
    --bs-table-bg: transparent;
    --bs-table-striped-bg: rgba(148, 163, 184, 0.08);
    --bs-table-hover-bg: rgba(59, 130, 246, 0.12);
    --bs-table-border-color: var(--border);
    color: var(--text-main);
}

.table-sort-link {
    color: var(--text-main);
    text-decoration: none;
}

.table-sort-link:hover {
    color: var(--link);
}

.drag-zone {
    border: 2px dashed #2a4265;
    border-radius: 14px;
    background: linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-surface-2) 100%);
    cursor: pointer;
    transition: all 0.2s ease;
}

body.theme-light .drag-zone {
    border-color: #92b3df;
}

.drag-zone-inner {
    padding: 44px 18px;
}

.drag-zone:hover,
.drag-zone-hover {
    border-color: #3a7bd5;
    background: linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-soft) 100%);
}

.login-body {
    margin: 0;
    background: radial-gradient(circle at 20% 20%, #1d3258 0%, #0e1628 50%, #070b14 100%);
}

body.theme-light.login-body {
    background: radial-gradient(circle at 20% 20%, #d7e6ff 0%, #eef5ff 55%, #f9fbff 100%);
}

.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-card {
    width: min(460px, 100%);
    background: linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-surface-2) 100%);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 26px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
}

.login-logo {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: inline-grid;
    place-items: center;
    background: linear-gradient(135deg, #0d6efd, #2ab3ff);
    overflow: hidden;
    color: #fff;
    font-size: 1.55rem;
}

.login-logo-icon {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.08);
    display: block;
}

.form-control,
.input-group-text,
.form-select {
    background-color: var(--bg-surface-2);
    border-color: var(--border);
    color: var(--text-main);
}

.form-control:focus,
.form-select:focus {
    background-color: var(--bg-surface-2);
    color: var(--text-main);
    border-color: #3d74b8;
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.15);
}

.form-label {
    color: var(--text-main);
}

.input-group-text {
    color: var(--text-dim);
}

.btn-outline-light {
    border-color: #35557d;
    color: var(--text-main);
}

body.theme-light .btn-outline-light {
    border-color: #8ea7ca;
}

.btn-outline-light:hover {
    background: rgba(13, 110, 253, 0.15);
    color: var(--text-main);
}

.pagination .page-link {
    background: var(--bg-surface-2);
    border-color: var(--border);
    color: var(--text-main);
}

.pagination .page-item.active .page-link {
    background: #0d6efd;
    border-color: #0d6efd;
}

.pagination .page-link:hover {
    background: rgba(13, 110, 253, 0.1);
}

code {
    color: #2684ff;
}

@media (max-width: 991px) {
    .app-shell {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .content-area {
        padding: 14px;
    }
}