/* ============================================
   学情追踪系统 · 全局样式 v2.0（飞书风）
   图标：统一 SVG 图标库（Heroicons 2.1.5 outline，见
   templates/components/icon.html 宏 + base.html #icon-store 供 JS 注入）。
   尺寸令牌 16/20/24；空态/上传区装饰放大走本文件 .empty-icon/.upload-icon svg 规则。
   颜色 currentColor 随文字色（toast 状态色由 .toast-* 与 .text-* 类控制）。
   ============================================ */

/* ---------- CSS 变量 ---------- */
:root {
    --c-primary: #2b5cf5;
    --c-primary-hover: #1d4ed8;
    --c-primary-bg: #e8effd;
    --c-success: #00864a;
    --c-success-bg: #e6faf5;
    --c-success-hover: #006d3b;
    --c-warning: #b45309;
    --c-warning-bg: #fff3e6;
    --c-danger: #b91c1c;
    --c-danger-bg: #ffe8eb;
    --c-purple: #7c3aed;
    --c-purple-bg: #f0e8ff;
    --c-indigo: #6366f1;           /* 装饰性靛蓝（供应商/徽标点缀，非状态语义） */
    --c-indigo-bg: #eef2ff;
    --c-text: #1d2129;
    --c-text-2: #4e5969;
    --c-text-3: #5c6470;
    --c-text-4: #6b7280;
    --c-bg: #f5f6f7;
    --c-bg-2: #fafbfc;
    --c-border: #e5e6eb;
    --c-border-2: #f2f3f5;
    /* 圆角系统（设计 §5.3）：sm 6 / 基础 8 / md 12 / lg 16 */
    --radius: 8px;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.06);
    --shadow-md: 0 4px 8px -2px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px -4px rgba(0,0,0,0.12);
    --c-purple-hover: #5b21b6;
    --c-info: #1967d2;
    --c-info-bg: #e8f0fe;
    --shadow-overlay-sm: 0 4px 12px rgba(0,0,0,0.10);
    --shadow-overlay-md: 0 8px 32px rgba(0,0,0,0.15);
    --shadow-overlay-lg: 0 20px 60px rgba(0,0,0,0.30);
    --focus-ring: 0 0 0 3px rgba(43,92,245,0.18);
    --chart-1: #2b5cf5;
    --chart-2: #00864a;
    --chart-3: #ff7d00;
    --chart-4: #f53f5b;
    --chart-5: #722ed1;
    --chart-6: #13c2c2;
}

/* ---------- 基础重置 ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
    font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--c-text);
    background: var(--c-bg);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, select, textarea { font-family: inherit; }

/* ---------- 通用工具类 ---------- */
.hidden { display: none !important; }
.text-muted { color: var(--c-text-3); }
.text-default { color: var(--c-text); }
.text-meta { color: var(--c-text-2); font-size: 14px; }
.text-muted-small { color: var(--c-text-3); font-size: 13px; }
.divide-y > * + * { border-top: 1px solid var(--c-border-2); }
.overflow-hidden { overflow: hidden; }

/* ---------- 顶栏 ---------- */
.topbar {
    background: #fff;
    border-bottom: 1px solid var(--c-border);
    height: 56px;
    display: flex;
    align-items: center;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 50;
}
.topbar-inner {
    display: flex;
    align-items: center;
    gap: 20px;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
}

.brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--c-text);
}
.brand-logo {
    width: 28px;
    height: 28px;
    border-radius: 7px;
    background: linear-gradient(135deg, var(--c-primary) 0%, #4f7cf7 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
}
.brand-name { font-size: 16px; }
.brand-version {
    font-size: 12px;
    padding: 1px 6px;
    background: var(--c-border-2);
    color: var(--c-text-3);
    border-radius: 4px;
    font-weight: 500;
}

.topbar-meta { display: flex; align-items: center; gap: 8px; }

.chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 14px;
    background: var(--c-border-2);
    color: var(--c-text-2);
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
}
.chip-clickable { cursor: pointer; transition: background 0.15s; }
@media (hover: hover) {
    .chip-clickable:hover { background: var(--c-border); }
}
.chip-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--c-success);
}
.chip-caret { color: var(--c-text-4); font-size: 10px; }

.topbar-nav {
    display: flex;
    gap: 2px;
    margin-left: auto;
}
.nav-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 12px;
    border-radius: var(--radius-sm);
    color: var(--c-text-2);
    font-size: 15px;
    font-weight: 500;
    transition: all 0.15s;
    position: relative;
}
@media (hover: hover) {
    .nav-item:hover {
        background: var(--c-border-2);
        color: var(--c-text);
    }
}
.nav-item.active {
    background: var(--c-primary-bg);
    color: var(--c-primary);
}
.nav-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background: var(--c-danger);
    color: #fff;
    border-radius: 9px;
    font-size: 12px;
    font-weight: 600;
    line-height: 1;
    margin-left: 2px;
}

/* 全局搜索 */
.topbar-search {
    position: relative;
    margin-left: 12px;
}
.topbar-search input {
    width: 220px;
    height: 32px;
    padding: 0 12px 0 32px;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-sm);
    background: var(--c-bg);
    color: var(--c-text);
    font-size: 14px;
    outline: none;
    transition: all 0.15s;
}
.topbar-search input:focus {
    background: #fff;
    border-color: var(--c-primary);
    width: 280px;
    box-shadow: 0 0 0 3px rgba(51, 112, 255, 0.1);
}
.search-icon {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    color: var(--c-text-3);
}
.search-results {
    position: absolute;
    top: 38px;
    left: 0;
    right: 0;
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    max-height: 360px;
    overflow-y: auto;
    z-index: 60;
    padding: 4px;
}
.search-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    transition: background 0.1s;
    cursor: pointer;
}
@media (hover: hover) {
    .search-item:hover { background: var(--c-bg); }
}
.search-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--c-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 13px;
    flex-shrink: 0;
}
.search-name { font-size: 14px; font-weight: 500; color: var(--c-text); }
.search-no { font-size: 12px; color: var(--c-text-3); margin-top: 1px; }
.search-empty { padding: 12px; color: var(--c-text-3); font-size: 14px; text-align: center; }

/* ---------- 主区 ---------- */
.main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px 24px 40px;
}
.footer {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px 24px 30px;
    text-align: center;
    font-size: 13px;
    color: var(--c-text-3);
}
.footer .dot { margin: 0 8px; }

/* ---------- 页面头部 ---------- */
.page-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 16px;
    gap: 16px;
}
.page-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 22px;
    font-weight: 600;
    color: var(--c-text);
    line-height: 1.2;
}
.page-desc {
    font-size: 14px;
    color: var(--c-text-3);
    margin-top: 4px;
}

/* ---------- 卡片 ---------- */
.card {
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}
.card-pad { padding: 20px; }
.card-pad-sm { padding: 14px 16px; }
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    border-bottom: 1px solid var(--c-border-2);
}
.card-title {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 16px;
    font-weight: 600;
    color: var(--c-text);
}
.card-extra { font-size: 13px; color: var(--c-text-3); }

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 7px 16px;
    border-radius: var(--radius);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    border: 1px solid transparent;
    white-space: nowrap;
}
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-success { background: var(--c-success); color: #fff; }
.btn-default { background: #fff; color: var(--c-text); border-color: var(--c-border); }
.btn-ghost { background: transparent; color: var(--c-text-2); }
@media (hover: hover) {
    .btn-primary:hover { background: var(--c-primary-hover); }
    .btn-success:hover { background: var(--c-success-hover); }
    .btn-default:hover { background: var(--c-bg); border-color: var(--c-text-4); }
    .btn-ghost:hover { background: var(--c-border-2); color: var(--c-text); }
}
.btn-sm { padding: 5px 12px; font-size: 13px; }
.btn-lg { padding: 10px 22px; font-size: 16px; }

/* ---------- 统计卡 ---------- */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}
.stat-card {
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 18px 20px;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.15s;
}
@media (hover: hover) {
    .stat-card:hover {
        border-color: var(--c-primary);
        box-shadow: var(--shadow-md);
        transform: translateY(-1px);
    }
}
.stat-card::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
}
.stat-card.warn::before { background: var(--c-warning); }
.stat-card.ok::before { background: var(--c-success); }
.stat-card.danger::before { background: var(--c-danger); }
.stat-card.info::before { background: var(--c-primary); }
.stat-label { font-size: 13px; color: var(--c-text-3); margin-bottom: 6px; }
.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--c-text);
    line-height: 1.1;
}
.stat-value.warn { color: var(--c-warning); }
.stat-value.ok { color: var(--c-success); }
.stat-value.danger { color: var(--c-danger); }
.stat-value.info { color: var(--c-primary); }
.stat-desc { font-size: 13px; color: var(--c-text-3); margin-top: 6px; }

/* ---------- 徽章 ---------- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
}
.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
}
.badge-blue { background: var(--c-primary-bg); color: var(--c-primary); }
.badge-blue .badge-dot { background: var(--c-primary); }
.badge-green { background: var(--c-success-bg); color: var(--c-success); }
.badge-green .badge-dot { background: var(--c-success); }
.badge-amber { background: var(--c-warning-bg); color: var(--c-warning); }
.badge-amber .badge-dot { background: var(--c-warning); }
.badge-red { background: var(--c-danger-bg); color: var(--c-danger); }
.badge-red .badge-dot { background: var(--c-danger); }
.badge-gray { background: var(--c-border-2); color: var(--c-text-2); }
.badge-gray .badge-dot { background: var(--c-text-3); }
.badge-purple { background: var(--c-purple-bg); color: var(--c-purple); }
.badge-purple .badge-dot { background: var(--c-purple); }

/* ---------- 链接 ---------- */
.link {
    color: var(--c-primary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: color 0.1s;
}
@media (hover: hover) {
    .link:hover { text-decoration: underline; }
}
.link.warn { color: var(--c-warning); }
.link.danger { color: var(--c-danger); }
.link.muted { color: var(--c-text-3); }
.link.sm { font-size: 13px; }

/* ---------- 表格 ---------- */
.data-table {
    width: 100%;
    border-collapse: collapse;
}
.data-table th {
    text-align: left;
    padding: 10px 16px;
    font-size: 13px;
    font-weight: 600;
    color: var(--c-text-3);
    background: var(--c-bg-2);
    border-bottom: 1px solid var(--c-border);
}
.data-table td {
    padding: 12px 16px;
    font-size: 14px;
    color: var(--c-text);
    border-bottom: 1px solid var(--c-border-2);
    vertical-align: middle;
}
.data-table tbody tr {
    transition: background 0.1s;
    cursor: pointer;
}
@media (hover: hover) {
    .data-table tbody tr:hover { background: var(--c-bg-2); }
}
.data-table tbody tr:last-child td { border-bottom: none; }

.cell-student { display: flex; align-items: center; gap: 10px; }
.cell-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 600;
    font-size: 14px;
    flex-shrink: 0;
}
.cell-student-name { font-weight: 500; color: var(--c-text); }
.cell-student-no { font-size: 12px; color: var(--c-text-3); margin-top: 1px; }

/* ---------- 空状态 ---------- */
.empty {
    padding: 80px 20px;
    text-align: center;
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
}
.empty-icon { margin-bottom: 12px; opacity: 0.4; }
.empty-icon svg { width: 40px; height: 40px; }
.empty-title { font-size: 16px; color: var(--c-text-2); }
.empty-desc { font-size: 14px; color: var(--c-text-3); margin-top: 4px; }

/* ---------- 信息条 ---------- */
.info-banner {
    background: var(--c-primary-bg);
    border: 1px solid #c7d8ff;
    border-radius: var(--radius);
    padding: 14px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}
.info-banner-icon { display: flex; flex-shrink: 0; }
.info-banner-title { font-size: 14px; font-weight: 600; color: var(--c-primary); }
.info-banner-desc { font-size: 13px; color: var(--c-primary); margin-top: 2px; opacity: 0.85; }

/* ---------- 评分（行内）---------- */
.score-mid {
    font-size: 16px;
    font-weight: 700;
    color: var(--c-primary);
}
.score-big {
    font-size: 20px;
    font-weight: 700;
    color: var(--c-primary);
}
.score-tier {
    display: inline-block;
    padding: 1px 6px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 500;
}
.score-tier.high, .score-tier--ok { background: var(--c-success-bg); color: var(--c-success); }
.score-tier.mid, .score-tier--warn { background: var(--c-warning-bg); color: var(--c-warning); }
.score-tier.low, .score-tier--danger { background: var(--c-danger-bg); color: var(--c-danger); }

/* ---------- Flash ---------- */
.flash-area {
    max-width: 1400px;
    margin: 12px auto 0;
    padding: 0 24px;
}
.flash {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    border-left: 3px solid;
    font-size: 13px;
}
.flash-success { background: var(--c-success-bg); border-color: var(--c-success); color: var(--c-success); }
.flash-error { background: var(--c-danger-bg); border-color: var(--c-danger); color: var(--c-danger); }
.flash-warning { background: var(--c-warning-bg); border-color: var(--c-warning); color: var(--c-warning); }
.flash-info { background: var(--c-primary-bg); border-color: var(--c-primary); color: var(--c-primary); }

/* ---------- 趋势 ---------- */
.trend-up { color: var(--c-success); font-weight: 600; font-size: 12px; }
.trend-down { color: var(--c-danger); font-weight: 600; font-size: 12px; }
.trend-flat { color: var(--c-text-3); font-weight: 600; font-size: 12px; }

/* ============================================
   首页专用
   ============================================ */
.home-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 16px;
}
.quick-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}
.quick-card {
    background: var(--c-bg-2);
    border: 1px solid var(--c-border-2);
    border-radius: var(--radius-sm);
    padding: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    transition: all 0.15s;
}
@media (hover: hover) {
    .quick-card:hover {
        background: #fff;
        border-color: var(--c-primary);
        transform: translateY(-1px);
    }
}
.quick-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.quick-icon svg { width: 18px; height: 18px; }
.quick-icon.blue { background: var(--c-primary-bg); color: var(--c-primary); }
.quick-icon.green { background: var(--c-success-bg); color: var(--c-success); }
.quick-icon.purple { background: var(--c-purple-bg); color: var(--c-purple); }
.quick-icon.orange { background: var(--c-warning-bg); color: var(--c-warning); }
.quick-title { font-size: 14px; font-weight: 600; color: var(--c-text); }
.quick-desc { font-size: 12px; color: var(--c-text-3); margin-top: 2px; }

.todo-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    background: var(--c-warning-bg);
    border: 1px solid #ffd9a3;
    margin-bottom: 8px;
    cursor: pointer;
    transition: all 0.15s;
    text-decoration: none;
    color: inherit;
}
.todo-item:last-child { margin-bottom: 0; }
@media (hover: hover) {
    .todo-item:hover { transform: translateX(2px); }
}
.todo-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--c-warning); flex-shrink: 0; }
.todo-text { flex: 1; font-size: 14px; color: var(--c-text-2); }
.todo-arrow { color: var(--c-warning); font-size: 14px; }

/* 最近批改 */
.recent-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    border-bottom: 1px solid var(--c-border-2);
    transition: background 0.1s;
    text-decoration: none;
    color: inherit;
}
.recent-row:last-child { border-bottom: none; }
@media (hover: hover) {
    .recent-row:hover { background: var(--c-bg-2); }
}
.recent-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 600;
    font-size: 13px;
    flex-shrink: 0;
}
.recent-info { flex: 1; min-width: 0; }
.recent-name { font-size: 14px; font-weight: 500; color: var(--c-text); }
.recent-task { font-size: 12px; color: var(--c-text-3); margin-top: 2px; }
.recent-score { font-size: 18px; font-weight: 700; }
.recent-score.ok { color: var(--c-success); }
.recent-score.warn { color: var(--c-warning); }
.recent-score.danger { color: var(--c-danger); }
.recent-score.pending { color: var(--c-text-4); font-size: 16px; }

/* ============================================
   作文批改页
   ============================================ */
.essay-toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}
.task-select {
    height: 34px;
    padding: 0 32px 0 12px;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-sm);
    background: #fff url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2'><polyline points='6 9 12 15 18 9'/></svg>") no-repeat right 10px center;
    font-size: 14px;
    font-weight: 500;
    color: var(--c-text);
    outline: none;
    appearance: none;
    min-width: 280px;
    cursor: pointer;
}
.task-select:focus { border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(51,112,255,0.1); }

.task-info-card {
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 12px 20px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 14px;
    color: var(--c-text-2);
    flex-wrap: wrap;
}
.task-info-item { display: flex; align-items: center; gap: 6px; }
.task-info-label { color: var(--c-text-3); }
.task-info-value { color: var(--c-text); font-weight: 500; }

.pipeline-card { padding: 24px 20px; margin-bottom: 16px; }
.pipeline-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 800px;
    margin: 0 auto;
}
.pipeline-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    transition: all 0.15s;
}
@media (hover: hover) {
    .pipeline-node:hover { background: var(--c-bg-2); }
}
.pipeline-node.active { background: var(--c-primary-bg); }
.pipeline-circle {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 18px;
    transition: all 0.15s;
}
@media (hover: hover) {
    .pipeline-node:hover .pipeline-circle { transform: scale(1.06); }
}
.pipeline-node.active .pipeline-circle { box-shadow: 0 0 0 4px rgba(51,112,255,0.15); }
.pipeline-label { font-size: 13px; color: var(--c-text-2); font-weight: 500; }
.pipeline-node.active .pipeline-label { color: var(--c-primary); font-weight: 600; }
.pipeline-arrow { color: var(--c-text-4); font-size: 18px; margin: 0 -4px; }

.pipeline-failed-row {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--c-border-2);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}
.pipeline-failed-item {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    transition: background 0.15s;
}
@media (hover: hover) {
    .pipeline-failed-item:hover { background: var(--c-danger-bg); }
}
.pipeline-failed-item.active { background: var(--c-danger-bg); }
.pipeline-failed-label { font-size: 13px; color: var(--c-danger); font-weight: 600; }
.pipeline-failed-count { font-size: 14px; color: var(--c-danger); font-weight: 700; }
.pipeline-hint { font-size: 12px; color: var(--c-text-3); margin-left: 8px; }

/* 阶段徽章配色 */
.s-upload { background: var(--c-text-3); }
.s-ocr { background: var(--c-primary); }
.s-scoring { background: var(--c-purple); }
.s-review { background: var(--c-warning); }
.s-done { background: var(--c-success); }
.s-failed { background: var(--c-danger); }

.upload-extra {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
    padding: 16px;
    border: 2px dashed var(--c-border);
    border-radius: var(--radius);
    color: var(--c-text-3);
    font-size: 14px;
    transition: all 0.15s;
    text-decoration: none;
}
@media (hover: hover) {
    .upload-extra:hover {
        border-color: var(--c-primary);
        background: var(--c-primary-bg);
        color: var(--c-primary);
    }
}

.history-summary {
    padding: 14px 20px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--c-text-2);
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background 0.1s;
}
.history-summary::-webkit-details-marker { display: none; }
@media (hover: hover) {
    .history-summary:hover { background: var(--c-bg-2); }
}
.history-caret { color: var(--c-text-3); transition: transform 0.15s; }
details[open] .history-caret { transform: rotate(180deg); }
.history-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
    font-size: 14px;
    transition: background 0.1s;
    text-decoration: none;
    color: inherit;
}
@media (hover: hover) {
    .history-row:hover { background: var(--c-bg-2); }
}

/* 模态框 */
.modal-mask {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.4);
}
.modal {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: 0 12px 48px rgba(0,0,0,0.18);
    padding: 24px;
    width: 100%;
    max-width: 420px;
    margin: 16px;
}

/* 统一处理页「完成弹窗」（复用 .modal-mask 同款遮罩与令牌，不引入新色值） */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.4);
}
.modal-box {
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 24px;
    width: 100%;
    max-width: 420px;
    margin: 16px;
}
.modal-title {
    font-size: 17px;
    font-weight: 600;
    color: var(--c-text);
}
.modal-body {
    font-size: 16px;
    line-height: 1.6;
    color: var(--c-text-2);
    margin: 12px 0 4px;
}
.modal-body b { color: var(--c-primary); font-weight: 600; }
.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 16px;
}

/* ============================================
   学生详情
   ============================================ */
.profile-header {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px 24px;
    margin-bottom: 16px;
}
.profile-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 22px;
    flex-shrink: 0;
}
.profile-info { flex: 1; }
.profile-name { font-size: 20px; font-weight: 600; color: var(--c-text); }
.profile-meta { font-size: 14px; color: var(--c-text-3); margin-top: 4px; }
.profile-stats { display: flex; gap: 32px; text-align: center; }
.profile-stat { text-align: center; }
.profile-stat-value { font-size: 22px; font-weight: 700; }
.profile-stat-label { font-size: 12px; color: var(--c-text-3); margin-top: 2px; }

.detail-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}
.chart-area { height: 240px; position: relative; }

.dim-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}
.dim-row:last-child { margin-bottom: 0; }
.dim-row-label {
    width: 56px;
    font-size: 14px;
    color: var(--c-text-2);
    flex-shrink: 0;
}
.dim-row-bar {
    flex: 1;
    height: 8px;
    background: var(--c-border-2);
    border-radius: 4px;
    overflow: hidden;
}
.dim-row-bar-inner {
    height: 100%;
    border-radius: 4px;
    transition: width 0.6s;
}
.dim-row-num {
    font-size: 14px;
    width: 90px;
    text-align: right;
    color: var(--c-text);
}
.dim-row-max { color: var(--c-text-3); font-weight: 400; font-size: 13px; }
.dim-row-rate { color: var(--c-text-3); font-weight: 400; font-size: 12px; }

/* 记录卡 */
.records-card { overflow: hidden; }
.records-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    background: var(--c-bg-2);
    border-bottom: 1px solid var(--c-border);
}
.records-header.essay { background: #f0f5ff; }
.records-header.exam { background: #f5f0ff; }
.records-title { font-size: 14px; font-weight: 600; }
.records-title.essay { color: var(--c-primary); }
.records-title.exam { color: var(--c-purple); }
.records-count { font-size: 13px; color: var(--c-text-3); }
.record-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    transition: background 0.1s;
    text-decoration: none;
    color: inherit;
}
@media (hover: hover) {
    .record-row:hover { background: var(--c-bg-2); }
}
.record-info { flex: 1; min-width: 0; }
.record-name { font-size: 14px; font-weight: 500; color: var(--c-text); }
.record-date { font-size: 12px; color: var(--c-text-3); margin-top: 2px; }
.record-score { font-size: 16px; font-weight: 700; }

/* ============================================
   作文详情
   ============================================ */
.essay-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    align-items: start;
}
.essay-content {
    background: var(--c-bg-2);
    border: 1px solid var(--c-border-2);
    border-radius: 6px;
    padding: 16px;
    font-size: 16px;
    line-height: 1.85;
    color: var(--c-text);
    max-height: 360px;
    overflow-y: auto;
    white-space: pre-wrap;
}
.essay-feedback-card { position: sticky; top: 80px; }

.feedback-body { font-size: 16px; line-height: 1.85; }
.feedback-segment { padding: 12px 0; border-bottom: 1px dashed var(--c-border-2); }
.feedback-segment:last-child { border-bottom: none; }
.feedback-anchor {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 6px;
}
.feedback-anchor.green { background: var(--c-success-bg); color: var(--c-success); }
.feedback-anchor.amber { background: var(--c-warning-bg); color: var(--c-warning); }
.feedback-anchor.red { background: var(--c-danger-bg); color: var(--c-danger); }
.feedback-anchor.gray { background: var(--c-border-2); color: var(--c-text-2); }
.feedback-text { font-size: 14px; line-height: 1.85; color: var(--c-text-2); }
.feedback-text mark { background: #fff3a3; padding: 0 2px; border-radius: 2px; color: var(--c-text); }

.back-link {
    display: inline-block;
    font-size: 14px;
    color: var(--c-text-2);
    margin-bottom: 12px;
    transition: color 0.1s;
}
@media (hover: hover) {
    .back-link:hover { color: var(--c-primary); }
}

/* ============================================
   学生管理
   ============================================ */
.students-search { position: relative; }
.students-search input {
    width: 240px;
    height: 34px;
    padding: 0 12px 0 32px;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-sm);
    background: #fff;
    font-size: 14px;
    outline: none;
}
.students-search input:focus { border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(51,112,255,0.1); }
.students-search .search-icon {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--c-text-3);
}

.students-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}
.student-card {
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 16px;
    cursor: pointer;
    transition: all 0.15s;
    display: flex;
    flex-direction: column;
    gap: 14px;
    text-decoration: none;
    color: inherit;
}
@media (hover: hover) {
    .student-card:hover {
        border-color: var(--c-primary);
        box-shadow: 0 4px 16px rgba(51,112,255,0.10);
        transform: translateY(-1px);
    }
}
.student-card-top {
    display: flex;
    align-items: center;
    gap: 12px;
}
.student-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 600;
    font-size: 16px;
    flex-shrink: 0;
}
.student-info { flex: 1; min-width: 0; }
.student-name { font-size: 16px; font-weight: 600; color: var(--c-text); }
.student-no { font-size: 13px; color: var(--c-text-3); margin-top: 2px; }
.student-card-stats {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 12px;
    border-top: 1px solid var(--c-border-2);
}
.student-stat { text-align: center; flex: 1; }
.student-stat-label { font-size: 12px; color: var(--c-text-3); }
.student-stat-value { font-size: 17px; font-weight: 700; color: var(--c-text); margin-top: 2px; }

/* ============================================
   上传页
   ============================================ */
.upload-area {
    background: #fff;
    border: 2px dashed var(--c-text-4);
    border-radius: var(--radius-lg);
    padding: 60px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.15s;
}
@media (hover: hover) {
    .upload-area:hover { border-color: var(--c-primary); background: var(--c-primary-bg); }
}
.upload-area.drag-over { border-color: var(--c-primary); background: var(--c-primary-bg); }
.upload-icon { margin-bottom: 12px; opacity: 0.7; display: flex; justify-content: center; }
.upload-icon svg { width: 48px; height: 48px; }
.upload-title { font-size: 16px; font-weight: 500; color: var(--c-text); }
.upload-hint { font-size: 14px; color: var(--c-text-3); margin-top: 6px; }
.preview-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-sm);
}
.preview-item + .preview-item { margin-top: 8px; }
.preview-idx { font-size: 13px; color: var(--c-text-3); width: 24px; }
.preview-name { flex: 1; font-size: 14px; color: var(--c-text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.preview-size { font-size: 13px; color: var(--c-text-3); }
.preview-del { display: inline-flex; align-items: center; font-size: 14px; color: var(--c-text-3); padding: 4px 6px; }
@media (hover: hover) {
    .preview-del:hover { color: var(--c-danger); }
}

/* ============================================
   表单
   ============================================ */
.form-card {
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 28px;
    max-width: 640px;
    box-shadow: var(--shadow-sm);
}
.form-group { margin-bottom: 18px; }
.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--c-text);
    margin-bottom: 6px;
}
.form-label .req { color: var(--c-danger); margin-left: 2px; }
.form-input {
    width: 100%;
    height: 40px;
    padding: 0 12px;
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    background: #fff;
    font-size: 16px;
    outline: none;
    color: var(--c-text);
    transition: all 0.15s;
}
.form-input:focus {
    border-color: var(--c-primary);
    box-shadow: 0 0 0 3px rgba(51,112,255,0.1);
}
.form-input:disabled { background: var(--c-bg-2); color: var(--c-text-3); cursor: not-allowed; }
.form-hint { font-size: 13px; color: var(--c-text-3); margin-top: 4px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

/* 学生匹配横幅 */
.match-banner {
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    font-size: 13px;
    border: 1px solid;
}
.match-ok { background: var(--c-success-bg); border-color: #b7eb8a; color: var(--c-success); }
.match-warn { background: var(--c-warning-bg); border-color: #ffd9a3; color: var(--c-warning); }

/* ============================================
   统一任务处理组件（全局长任务交互方案 T02）
   步骤条 / 进度条 / 告警块，全部复用现有 --c-* 令牌
   ============================================ */

/* ---------- 步骤条 ---------- */
.stepbar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}
.step {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    opacity: 0.55;
    transition: opacity 0.25s, color 0.25s;
}
.step-dot {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--c-text-3);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    flex: none;
    transition: background 0.25s;
}
.step-dot svg { width: 14px; height: 14px; }
.step-label { font-size: 14px; font-weight: 500; color: var(--c-text-3); }
.step-arrow { color: var(--c-text-3); font-size: 14px; }

.step-pending { opacity: 0.55; }
.step-active { opacity: 1; }
.step-active .step-dot { background: var(--c-primary); animation: step-pulse 1.2s ease-in-out infinite; }
.step-active .step-label { color: var(--c-primary); }
.step-done { opacity: 1; }
.step-done .step-dot { background: var(--c-primary); }
.step-done .step-label { color: var(--c-primary); }
.step-failed { opacity: 1; }
.step-failed .step-dot { background: var(--c-danger); }
.step-failed .step-label { color: var(--c-danger); }

@keyframes step-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(51,112,255,0.35); }
    50% { box-shadow: 0 0 0 5px rgba(51,112,255,0); }
}

/* ---------- 进度条 ---------- */
.progress { width: 100%; }
.progress-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}
.progress .progress-label { font-size: 16px; font-weight: 500; color: var(--c-text); }
.progress .progress-pct { font-size: 16px; font-weight: 600; color: var(--c-primary); }
.progress-track {
    width: 100%;
    height: 12px;
    background: var(--c-border);
    border-radius: 6px;
    overflow: hidden;
}
.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--c-primary), var(--c-success));
    border-radius: 6px;
    transition: width 0.4s ease;
}
.progress-detail { margin-top: 10px; font-size: 14px; color: var(--c-text-3); }

/* ---------- 告警块（完成/失败） ---------- */
.alert {
    border: 1px solid;
    border-radius: var(--radius);
    padding: 18px 20px;
}
.alert-title { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.alert-body { font-size: 14px; line-height: 1.6; }
.alert-success { background: var(--c-success-bg); border-color: #b7eb8a; color: var(--c-success); }
.alert-error { background: var(--c-danger-bg); border-color: #ffb3b3; color: var(--c-danger); }
.alert-warning { background: var(--c-warning-bg); border-color: #ffd9a3; color: var(--c-warning); }
.match-fail { background: var(--c-danger-bg); border-color: #ffccc4; color: var(--c-danger); }

/* ---------- 处理页内容展示区（OCR 文字 / 切题预览） ---------- */
.ocr-text {
    margin: 0;
    max-height: 320px;
    overflow: auto;
    background: var(--c-bg-2);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    font-size: 13px;
    line-height: 1.7;
    color: var(--c-text-2);
    white-space: pre-wrap;
    word-break: break-word;
}
.ocr-page { padding: 8px 0; border-bottom: 1px dashed var(--c-border); }
.ocr-page:last-child { border-bottom: none; }
.ocr-page-head { font-size: 12px; font-weight: 600; color: var(--c-primary); margin-bottom: 4px; }
.ocr-page-text { font-size: 13px; color: var(--c-text-2); white-space: pre-wrap; word-break: break-word; }

.split-list { display: flex; flex-direction: column; gap: 8px; }
.split-row {
    display: grid;
    grid-template-columns: 1fr auto;
    grid-template-areas: "main meta" "answer answer";
    gap: 2px 12px;
    padding: 10px 12px;
    background: var(--c-bg-2);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-sm);
}
.split-row-main { grid-area: main; font-size: 14px; font-weight: 500; color: var(--c-text); }
.split-row-meta { grid-area: meta; font-size: 14px; font-weight: 600; color: var(--c-primary); }
.split-row-answer { grid-area: answer; font-size: 13px; color: var(--c-text-3); margin-top: 2px; }