/* ===========================================================
   班级管家 · 组件样式（配合 base.css 使用）
   =========================================================== */

/* ---------------------------------------------------------- 徽标 */
.badge {
    display: inline-block; padding: 2px 8px; font-size: 12px; line-height: 1.6;
    border-radius: 999px; background: #eef1f6; color: var(--text-sub); white-space: nowrap;
}
.badge.ok { background: var(--success-soft); color: #14803c; }
.badge.warn { background: var(--warn-soft); color: #a86400; }
.badge.danger { background: var(--danger-soft); color: #b42318; }
.badge.info { background: var(--info-soft); color: #0b6f9c; }
.badge.muted { background: #eef1f6; color: var(--muted); }
.badge.primary { background: var(--primary-soft); color: var(--primary-dark); }

.trend { font-size: 12px; font-variant-numeric: tabular-nums; }
.trend.up { color: var(--success); }
.trend.down { color: var(--danger); }
.trend.flat { color: var(--muted); }

/* ---------------------------------------------------------- 统计卡片 */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat-card {
    background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 14px 16px; box-shadow: var(--shadow);
}
.stat-label { font-size: 13px; color: var(--muted); }
.stat-value { font-size: 26px; font-weight: 600; line-height: 1.3; margin-top: 4px; font-variant-numeric: tabular-nums; }
.stat-extra { font-size: 12px; color: var(--text-sub); margin-top: 2px; }
.stat-card.primary { border-left: 3px solid var(--primary); }
.stat-card.success { border-left: 3px solid var(--success); }
.stat-card.warn { border-left: 3px solid var(--warn); }
.stat-card.danger { border-left: 3px solid var(--danger); }

/* ---------------------------------------------------------- 页面头 / 工具条 */
.toolbar {
    display: flex; align-items: flex-end; gap: 10px; flex-wrap: wrap;
    padding: 12px 16px; border-bottom: 1px solid var(--border); background: #fbfcfe;
}
.toolbar .form-item { margin-bottom: 0; min-width: 130px; }
.toolbar .grow { flex: 1; }
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.page-title { font-size: 18px; font-weight: 600; }
.page-desc { font-size: 13px; color: var(--muted); }
.breadcrumb { font-size: 13px; color: var(--muted); margin-bottom: 10px; }
.breadcrumb a { color: var(--muted); }

/* ---------------------------------------------------------- 提示 */
.alert {
    padding: 10px 14px; border-radius: var(--radius-sm); border: 1px solid transparent;
    margin-bottom: 14px; font-size: 14px; display: flex; align-items: flex-start; gap: 8px;
}
.alert-success { background: var(--success-soft); border-color: #bfe6cd; color: #14803c; }
.alert-error { background: var(--danger-soft); border-color: #f4c9c9; color: #b42318; }
.alert-info { background: var(--info-soft); border-color: #c3e6f7; color: #0b6f9c; }
.alert-warn { background: var(--warn-soft); border-color: #f6dcb0; color: #a86400; }
.alert .close { margin-left: auto; cursor: pointer; opacity: .6; border: 0; background: none; font-size: 16px; color: inherit; }

.empty { padding: 40px 16px; text-align: center; color: var(--muted); font-size: 14px; }
.empty .empty-icon { font-size: 34px; display: block; margin-bottom: 8px; opacity: .5; }

/* ---------------------------------------------------------- 选项卡 */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 14px; overflow-x: auto; }
.tab { padding: 8px 14px; color: var(--text-sub); border-bottom: 2px solid transparent; white-space: nowrap; font-size: 14px; }
.tab:hover { color: var(--primary); }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }

/* ---------------------------------------------------------- 分页 */
.pagination { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; padding: 12px 16px; border-top: 1px solid var(--border); }
.page-link {
    min-width: 32px; padding: 4px 10px; text-align: center; border: 1px solid var(--border);
    border-radius: var(--radius-sm); color: var(--text-sub); background: #fff; font-size: 13px;
}
.page-link:hover { border-color: var(--primary); color: var(--primary); }
.page-link.current { background: var(--primary); border-color: var(--primary); color: #fff; }
.page-link.disabled { opacity: .45; pointer-events: none; }
.page-gap { color: var(--muted); padding: 0 2px; }
.page-total { margin-left: auto; font-size: 12px; color: var(--muted); }

/* ---------------------------------------------------------- 图表 */
.chart { width: 100%; height: 240px; display: block; }
.chart-sm { height: 160px; }
.chart-legend { display: flex; gap: 14px; flex-wrap: wrap; font-size: 12px; color: var(--text-sub); margin-top: 8px; }
.chart-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 4px; }
.bar-row { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; font-size: 13px; }
.bar-row .bar-label { width: 96px; color: var(--text-sub); flex-shrink: 0; }
.bar-row .bar-track { flex: 1; height: 10px; background: #eef1f6; border-radius: 999px; overflow: hidden; }
.bar-row .bar-fill { height: 100%; background: var(--primary); border-radius: 999px; }
.bar-row .bar-fill.ok { background: var(--success); }
.bar-row .bar-fill.warn { background: var(--warn); }
.bar-row .bar-fill.danger { background: var(--danger); }
.bar-row .bar-value { width: 64px; text-align: right; font-variant-numeric: tabular-nums; }

/* ---------------------------------------------------------- 头像 / 描述列表 */
.avatar {
    width: 36px; height: 36px; border-radius: 50%; background: var(--primary-soft); color: var(--primary-dark);
    display: inline-flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 600; flex-shrink: 0;
}
.avatar.lg { width: 56px; height: 56px; font-size: 20px; }
.desc { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 10px 16px; }
.desc-item { display: flex; gap: 8px; font-size: 14px; }
.desc-item dt { color: var(--muted); min-width: 76px; flex-shrink: 0; }
.desc-item dd { margin: 0; color: var(--text); }

/* ---------------------------------------------------------- 弹层 / Toast */
.modal-mask {
    position: fixed; inset: 0; background: rgba(15, 23, 42, .45);
    display: none; align-items: center; justify-content: center; z-index: 1000; padding: 16px;
}
.modal-mask.show { display: flex; }
.modal {
    background: #fff; border-radius: var(--radius); width: 100%; max-width: 420px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, .2); overflow: hidden;
}
.modal-head { padding: 14px 16px; border-bottom: 1px solid var(--border); font-weight: 600; }
.modal-body { padding: 16px; font-size: 14px; color: var(--text-sub); }
.modal-foot { padding: 12px 16px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 8px; }

#toast {
    position: fixed; left: 50%; bottom: 60px; transform: translateX(-50%);
    background: rgba(17, 24, 39, .92); color: #fff; padding: 10px 18px; border-radius: 999px;
    font-size: 14px; z-index: 2000; opacity: 0; transition: opacity .2s ease;
    pointer-events: none; max-width: 86vw; text-align: center;
}
#toast.show { opacity: 1; }

/* ---------------------------------------------------------- 错误页 */
.error-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 20px; }
.error-page {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
    padding: 36px 32px; text-align: center; max-width: 520px; width: 100%; box-shadow: var(--shadow);
}
.error-code { font-size: 62px; font-weight: 700; color: var(--primary); line-height: 1; }
.error-page h1 { margin: 10px 0 6px; font-size: 20px; }
.error-tip { color: var(--text-sub); margin-bottom: 18px; }
.error-detail {
    text-align: left; background: #f7f9fc; border: 1px solid var(--border); border-radius: var(--radius-sm);
    padding: 10px; font-size: 12px; color: var(--danger); margin-bottom: 18px;
    max-height: 200px; overflow: auto; word-break: break-all;
}
.error-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

/* ---------------------------------------------------------- 工具类 */
.flex { display: flex; align-items: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col { display: flex; flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.gap-4 { gap: 4px; } .gap-8 { gap: 8px; } .gap-12 { gap: 12px; } .gap-16 { gap: 16px; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.mt-0 { margin-top: 0; } .mt-8 { margin-top: 8px; } .mt-16 { margin-top: 16px; }
.mb-0 { margin-bottom: 0; } .mb-8 { margin-bottom: 8px; } .mb-16 { margin-bottom: 16px; }
.text-right { text-align: right; } .text-center { text-align: center; } .text-left { text-align: left; }
.muted { color: var(--muted); } .sub { color: var(--text-sub); }
.small { font-size: 12px; }
.bold { font-weight: 600; }
.hidden { display: none !important; }
.w-full { width: 100%; }
.nowrap { white-space: nowrap; }
.pointer { cursor: pointer; }
.divider { height: 1px; background: var(--border); margin: 14px 0; }

@media (max-width: 768px) {
    .table th, .table td { padding: 8px; }
    .card-body { padding: 12px; }
    .stat-value { font-size: 22px; }
}