/* =====================================================================
   Ekko 课评系统 · 暗色玻璃拟态设计系统 v2 (theme.css)
   设计基调：暗色 / 玻璃拟态 / 蓝青渐变 / 科技感
   参考自 classreview.html 的 ClassReview Pro 风格
   - 全局深空背景 + 动画网格 + 径向光晕
   - 玻璃拟态卡片（backdrop-filter blur + 半透明 + 蓝色边框）
   - 蓝 #3b82f6 + 青 #06b6d4 渐变强调色系
   - 渐变文字品牌、渐变按钮、hover 发光+微浮
   - 自定义蓝色滚动条、pulse-dot 动画
   ===================================================================== */

/* ---------- 设计令牌 ---------- */
:root {
  /* 强调色 ramp（蓝→青渐变，科技感） */
  --accent:        #3b82f6;   /* blue-500  主强调 / 链接 */
  --accent-strong: #2563eb;   /* blue-600  按钮悬停/激活 */
  --accent-deep:   #1d4ed8;   /* blue-700  深色文字/强激活 */
  --accent-soft:   rgba(59,130,246,.12);  /* 浅底强调 */
  --accent-ring:   rgba(59,130,246,.25);
  --cyan:          #06b6d4;   /* cyan-500  辅助色/渐变搭档 */
  --cyan-soft:     rgba(6,182,212,.12);
  --gradient-accent: linear-gradient(135deg, var(--accent), var(--cyan));

  /* 语义色（适配暗底） */
  --success: #10b981;
  --success-soft: rgba(16,185,129,.12);
  --warning: #f59e0b;
  --warning-soft: rgba(245,158,11,.12);
  --danger:  #ef4444;
  --danger-soft:  rgba(239,68,68,.12);
  --info: var(--accent);

  /* 中性面（暗色系） */
  --bg:        #0a0e1a;       /* 深空主背景 */
  --bg-card:   rgba(17,24,39,.75);  /* 玻璃卡片底 */
  --surface:   rgba(17,24,39,.80);  /* 表面/面板 */
  --surface-2: rgba(30,41,59,.55);   /* 次级表面 */
  --surface-3: rgba(30,41,59,.70);
  --border:    rgba(59,130,246,.18); /* 蓝调半透明边框 */
  --border-strong: rgba(59,130,246,.35);
  --border-subtle: rgba(148,163,184,.10);

  /* 文字（暗底亮字） */
  --text:   #f1f5f9;   /* slate-100 主文字 */
  --text-2: #94a3b8;   /* slate-400 次要文字 */
  --text-3: #64748b;   /* slate-500 辅助文字 */

  /* 圆角 / 阴影 */
  --radius:    16px;
  --radius-sm: 12px;
  --radius-xs: 10px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.2);
  --shadow:    0 4px 16px rgba(0,0,0,.25), 0 0 0 1px var(--border);
  --shadow-lg: 0 18px 50px -12px rgba(0,0,0,.45);

  /* 后台导航（更深一层） */
  --nav-bg:        #0c1222;
  --nav-bg-2:      #080d18;
  --nav-text:      #94a3b8;
  --nav-text-2:    #64748b;
  --nav-active:    #f1f5f9;
  --nav-hover-bg:  rgba(59,130,246,.08);
  --nav-active-bg: rgba(59,130,246,.15);
  --nav-border:     rgba(148,163,184,.10);

  /* 兼容旧模板的变量别名（避免改 45 个子模板） */
  --primary: var(--accent);
  --primary-dark: var(--accent-strong);
  --primary-light: var(--accent-soft);
  --card: var(--surface);
  --card-bg: var(--surface);
  --muted: var(--text-2);
  --text-primary: var(--text);
  --text-secondary: var(--text-2);
  --sidebar-bg: var(--nav-bg);
  --sidebar-text: var(--nav-text);
  --sidebar-active: var(--nav-active);
  --sidebar-hover-bg: var(--nav-hover-bg);
}

/* ---------- 基础重置 ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ====== 背景装饰层（纯 CSS：动画网格 + 径向光晕，无需模板改动） ====== */
body::before {
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(59,130,246,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,.05) 1px, transparent 1px);
  background-size: 50px 50px;
}
body::after {
  content: ""; position: fixed; width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(59,130,246,.15), transparent 70%);
  top: -200px; right: -200px;
  pointer-events: none; z-index: 0;
}

/* 让 body 直接子元素浮在装饰层之上 */
body > nav, body > .container, body > .main, body > .login-container,
body > .stage, body > .wrap, body > .topbar, body > #flash,
body > header, body > .hall-layout, body > .detail-layout { position: relative; z-index: 1; }

/* 等宽数字 */
.mono, .stat-value, .stat-trend, .r-count, .tl-date, .meta {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

/* ---------- 排版 ---------- */
h1, h2, h3 { color: var(--text); letter-spacing: -.02em; line-height: 1.25; }
h1 { font-size: 22px; margin: 0 0 4px; font-weight: 700; }
h2 { font-size: 18px; margin: 0; font-weight: 700; }
h3 { font-size: 16px; margin: 18px 0 8px; font-weight: 650; }
.sub { color: var(--text-2); font-size: 14px; margin: 0 0 22px; }
.muted { color: var(--text-2); font-size: 13px; }

/* ---------- 容器 / 列表 ---------- */
.container { max-width: 880px; margin: 28px auto; padding: 0 20px; position: relative; z-index: 1; }
.list { list-style: none; padding: 0; margin: 0; }
.list li {
  padding: 12px 0; border-bottom: 1px solid var(--border-subtle);
  display: flex; align-items: center; gap: 10px;
}

/* ========== 玻璃拟态卡片（通用） ========== */
.glass-card, .card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all .3s ease;
}
.glass-card:hover, .card:hover {
  border-color: var(--border-strong);
  box-shadow: 0 0 30px rgba(59,130,246,.12);
  transform: translateY(-2px);
}
.card-body { padding: 24px; }
.card-padding { padding: 24px; }
.card.pad, .card--pad { padding: 18px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  background: var(--gradient-accent); color: #fff; border: none;
  padding: 11px 24px; border-radius: var(--radius-xs); font-size: 14px; font-weight: 600;
  cursor: pointer; text-align: center; text-decoration: none; line-height: 1.2;
  transition: all .3s ease; position: relative; overflow: hidden;
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(59,130,246,.4);
}
.btn:active { transform: translateY(0); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.btn-secondary {
  background: transparent; color: var(--text-2);
  border: 1px solid var(--border); padding: 10px 20px;
  border-radius: var(--radius-xs); cursor: pointer; transition: all .3s ease;
}
.btn-secondary:hover {
  border-color: var(--accent); color: var(--text);
  background: var(--accent-soft);
}
.btn-ghost {
  background: transparent; color: var(--text-2); border: 1px solid var(--border);
  padding: 10px 20px; border-radius: var(--radius-xs); cursor: pointer; transition: all .3s ease;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--text); background: var(--accent-soft); }
.btn-danger {
  background: var(--danger-soft); color: var(--danger);
  border: 1px solid rgba(239,68,68,.25); border-radius: var(--radius-xs);
  font-size: 14px; font-weight: 600; cursor: pointer; transition: all .3s ease;
}
.btn-danger:hover { background: rgba(239,68,68,.22); box-shadow: 0 4px 16px rgba(239,68,68,.15); }
.btn-sm { padding: 6px 14px; font-size: 13px; border-radius: 8px; }
.btn-logout {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 16px; background: var(--danger-soft); color: var(--danger);
  border: 1px solid rgba(239,68,68,.25); border-radius: var(--radius-xs);
  font-size: 13px; font-weight: 600; text-decoration: none; transition: all .3s ease;
}
.btn-logout:hover { background: rgba(239,68,68,.22); }

/* ---------- 表单 ---------- */
label { display: block; font-size: 14px; margin: 14px 0 6px; color: var(--text-2); font-weight: 500; }
textarea, select {
  width: 100%; padding: 12px 16px; border: 1px solid var(--border);
  border-radius: var(--radius-xs); font-size: 14px; font-family: inherit; color: var(--text);
  background: rgba(30,41,59,.6); resize: vertical;
  transition: border-color .2s, box-shadow .2s; outline: none;
}
textarea:focus, select:focus, input[type]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}
/* 修复原生 select 下拉面板在深色主题下被系统渲染成浅色的问题 */
select option {
  background-color: #0f172a;   /* 与页面深色背景一致 */
  color: #e2e8f0;
}
select option:checked {
  background-color: var(--accent);
  color: #fff;
  font-weight: 600;
}
select option:hover {
  background-color: var(--accent-soft);
  color: var(--text);
}
input[type=text], input[type=email], input[type=password], input[type=date], input[type=number] {
  width: 100%; padding: 13px 16px; border: 1px solid var(--border);
  border-radius: var(--radius-xs); font-size: 14px;
  background: rgba(30,41,59,.6); color: var(--text);
  transition: border-color .2s, box-shadow .2s; outline: none;
}
input::placeholder, textarea::placeholder { color: #475569; }

.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 600; color: var(--text-2); margin-bottom: 6px; }
.field .err { display: block; color: var(--danger); font-size: 12px; margin-top: 4px; }
.field .ok  { display: block; color: var(--success); font-size: 12px; margin-top: 4px; }
.field input.input-bad { border-color: var(--danger); }
.field input.input-bad:focus { box-shadow: 0 0 0 3px rgba(239,68,68,.2); }
.hint { display: block; color: var(--text-3); font-size: 12px; margin-top: 4px; }
.remember { display: flex; align-items: center; gap: 6px; margin-top: 12px; font-size: 14px; color: var(--text-2); }
.providers { margin-top: 18px; border-top: 1px solid var(--border-subtle); padding-top: 16px; }
.provider-btn {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; padding: 10px; margin-top: 10px;
  border: 1px solid var(--border); border-radius: var(--radius-xs);
  background: var(--surface); color: var(--text-2); font-size: 14px; cursor: not-allowed;
}
.provider-btn.enabled { cursor: pointer; color: var(--text); }
.provider-btn.enabled:hover { border-color: var(--accent); }

/* ---------- 提示条 / 横幅 ---------- */
.alert { padding: 10px 14px; border-radius: var(--radius-xs); font-size: 13px; margin-bottom: 14px; border: 1px solid transparent; }
.alert-success { background: var(--success-soft); color: #34d399; border-color: rgba(16,185,129,.25); }
.alert-danger  { background: var(--danger-soft);  color: #fca5a5; border-color: rgba(239,68,68,.25); }
.alert-warning { background: var(--warning-soft); color: #fcd34d; border-color: rgba(245,158,11,.25); }
.alert-info    { background: var(--accent-soft);  color: #93c5fd; border-color: var(--border-strong); }
.banner {
  background: var(--warning-soft); border: 1px solid rgba(245,158,11,.25); color: #fcd34d;
  padding: 12px 14px; border-radius: var(--radius-xs); font-size: 14px; margin-bottom: 20px;
}
.dev-link {
  display: block; word-break: break-all; background: var(--surface-2); color: var(--accent);
  padding: 10px; border-radius: var(--radius-xs); font-size: 12px; margin-top: 12px; text-decoration: none;
}
.alt { margin-top: 16px; font-size: 13px; color: var(--text-2); text-align: center; }
.alt a { color: var(--accent); text-decoration: none; font-weight: 600; }
.alt a:hover { text-decoration: underline; }

/* ============ 教师端顶部导航 ============ */
.topnav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 6px;
  padding: 10px 22px;
  background: rgba(10,14,26,.88);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
          backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}
.topnav .brand { display: flex; align-items: center; margin-right: auto; }
.topnav .brand img { height: 30px; width: auto; }
.topnav a {
  color: var(--text-2); text-decoration: none; font-size: 14px;
  padding: 7px 12px; border-radius: var(--radius-xs); transition: all .2s;
}
.topnav a:hover { background: var(--accent-soft); color: var(--text); }
.topnav .nav-sep { width: 1px; height: 22px; background: var(--border-subtle); }
.topnav .help-btn {
  background: var(--warning-soft); color: var(--warning); border: 1px solid rgba(245,158,11,.2);
  cursor: pointer; font-size: 13px; padding: 6px 12px; border-radius: var(--radius-xs);
  text-decoration: none;
}
.topnav .help-btn:hover { background: rgba(245,158,11,.18); }
.topnav .help-btn.btn-dot {
  width: 28px; height: 28px; padding: 0; font-size: 15px; font-weight: 700;
  line-height: 1; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
/* 「💡 新手引导」醒目按钮 */
.topnav .help-btn-strong {
  background: linear-gradient(135deg, rgba(59,130,246,.18), rgba(6,182,212,.18));
  color: var(--text);
  border: 1px solid var(--border-strong);
  font-weight: 600;
  display: inline-flex; align-items: center; gap: 4px;
}
.topnav .help-btn-strong:hover {
  background: linear-gradient(135deg, rgba(59,130,246,.28), rgba(6,182,212,.28));
  color: var(--text);
}
/* 紧凑型「?」按钮（次要入口） */
.topnav .help-btn-mini {
  width: 28px; height: 28px; padding: 0;
  font-size: 14px; font-weight: 700;
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.topnav .teacher-name {
  font-size: 14px; font-weight: 600; color: var(--accent);
  padding: 4px 10px; border-radius: var(--radius-xs); background: var(--accent-soft); white-space: nowrap;
}
.topnav .logout { color: var(--danger); }
.topnav .logout:hover { background: var(--danger-soft); }

/* 工作台入口卡片 */
.card-link {
  display: block; text-decoration: none; cursor: pointer;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px 18px; transition: all .3s ease; color: var(--text);
  position: relative; overflow: hidden;
}
.card-link::before {
  content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%;
  background: var(--gradient-accent); opacity: 0; transition: opacity .3s;
}
.card-link:hover {
  border-color: var(--border-strong); box-shadow: 0 0 30px rgba(59,130,246,.12);
  transform: translateY(-2px);
}
.card-link:hover::before { opacity: 1; }
.card-link b { display: block; font-size: 15px; margin-bottom: 6px; color: var(--text); }
.card-link span { font-size: 12px; color: var(--text-2); line-height: 1.5; }
.card-link.disabled { cursor: not-allowed; opacity: .5; }
.card-link.disabled:hover { transform: none; box-shadow: none; border-color: var(--border); }

/* 未写课评提醒条 */
.reminder-bar {
  display: none; background: var(--warning-soft); border: 1px solid rgba(245,158,11,.25);
  color: #fcd34d; padding: 12px 16px; border-radius: var(--radius-sm);
  font-size: 14px; margin-bottom: 18px; line-height: 1.7;
}
.reminder-bar.show { display: block; }
.reminder-bar.all-done { background: var(--success-soft); border-color: rgba(16,185,129,.25); color: #34d399; }
.reminder-bar b { font-weight: 700; }
.reminder-bar .r-list { margin: 8px 0 0; padding-left: 0; list-style: none; }
.reminder-bar .r-list li { padding: 3px 0; border: none; display: block; font-size: 13px; }
.reminder-bar .r-list a { color: var(--warning); font-weight: 600; text-decoration: none; }
.reminder-bar .r-list a:hover { text-decoration: underline; }
.reminder-bar .r-count { color: var(--danger); font-weight: 700; }

/* 引导浮层 */
.tour-mask {
  position: fixed; inset: 0; background: rgba(10,14,26,.7); z-index: 200;
  display: none; align-items: center; justify-content: center;
}
.tour-mask.show { display: flex; }
.tour-box {
  background: var(--surface); border: 1px solid var(--border); border-radius: 18px;
  max-width: 480px; padding: 28px 30px; backdrop-filter: blur(16px);
  box-shadow: var(--shadow-lg);
}
.tour-box h2 { margin: 0 0 10px; font-size: 20px;
  background: var(--gradient-accent); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.tour-box p { font-size: 14px; line-height: 1.7; color: var(--text); margin: 0 0 12px; }
.tour-step-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--border-strong); margin: 0 3px; }
.tour-step-dot.active { background: var(--accent); }

/* 行内引导小标 */
.hint-tag {
  display: inline-flex; align-items: center; gap: 4px; margin-left: 6px;
  font-size: 12px; color: var(--accent); cursor: help; position: relative;
}
.hint-tag::after {
  content: attr(data-tip);
  position: absolute; bottom: 130%; left: 0; min-width: 220px; max-width: 280px;
  background: var(--nav-bg); color: var(--text); padding: 8px 12px; border-radius: var(--radius-xs);
  font-size: 12px; line-height: 1.6; opacity: 0; pointer-events: none; transition: opacity .15s; z-index: 100;
  border: 1px solid var(--border);
}
.hint-tag:hover::after { opacity: 1; }

/* ============ 后台：侧边导航 ============ */
.sidebar {
  width: 240px; background: linear-gradient(180deg, var(--nav-bg) 0%, var(--nav-bg-2) 100%);
  color: var(--nav-text);
  position: fixed; top: 0; left: 0; bottom: 0; z-index: 100;
  display: flex; flex-direction: column; flex-shrink: 0;
  border-right: 1px solid var(--nav-border);
}
.sidebar-brand {
  padding: 22px 20px 18px; display: flex; align-items: center; gap: 12px;
  border-bottom: 1px solid var(--nav-border);
}
.sidebar-brand .logo { width: 42px; height: 42px; border-radius: 11px; object-fit: contain; background: transparent; }
.sidebar-brand .brand-text {
  font-size: 15px; font-weight: 800; letter-spacing: -.3px;
  background: var(--gradient-accent); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.sidebar-brand .brand-sub { font-size: 11px; color: var(--nav-text-2); margin-top: 2px; letter-spacing: .5px; }

.nav-section { padding: 16px 12px 8px; flex: 1; overflow-y: auto; }
.nav-label {
  font-size: 11px; text-transform: uppercase; letter-spacing: 1px;
  padding: 0 12px 8px; color: var(--nav-text-2); font-weight: 600;
}
.nav-item {
  display: flex; align-items: center; gap: 10px; padding: 10px 14px;
  border-radius: var(--radius-xs); color: var(--nav-text); text-decoration: none;
  font-size: 14px; transition: all .2s ease; cursor: pointer; position: relative;
}
.nav-item:hover { background: var(--nav-hover-bg); color: var(--text); }
.nav-item.active {
  background: var(--nav-active-bg); color: var(--text); font-weight: 600;
}
.nav-item.active::before {
  content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 3px; height: 18px; border-radius: 0 3px 3px 0;
  background: var(--gradient-accent);
}
.nav-item .icon { width: 20px; height: 20px; flex-shrink: 0; opacity: .65; }
.nav-item.active .icon { opacity: 1; }

.sidebar-footer {
  margin-top: auto; padding: 14px 20px; border-top: 1px solid var(--nav-border);
  font-size: 12px; color: var(--nav-text-2);
}

/* ============ 后台：主区 ============ */
.main { margin-left: 240px; flex: 1; display: flex; flex-direction: column; min-width: 0; min-height: 100vh; }
.topbar--admin {
  height: 64px; background: rgba(10,14,26,.85);
  -webkit-backdrop-filter: saturate(180%) blur(20px); backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 32px; position: sticky; top: 0; z-index: 50;
}
.topbar--admin h2 { font-size: 18px; font-weight: 700; color: var(--text); }
.topbar .breadcrumb { font-size: 13px; color: var(--text-2); }
.topbar-right { display: flex; align-items: center; gap: 16px; }
.user-badge {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 14px; background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 20px; font-size: 13px; color: var(--text-2);
}
.user-avatar {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--gradient-accent);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700;
}
.content { padding: 28px 32px; flex: 1; }

/* 区块 */
.section { margin-bottom: 28px; }
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.section-title { font-size: 16px; font-weight: 700; color: var(--text); }
.section-action { font-size: 13px; color: var(--accent); text-decoration: none; font-weight: 600; }
.section-action:hover { text-decoration: underline; }

/* 统计卡 */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 18px; margin-bottom: 28px; }
.stat-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px 22px; backdrop-filter: blur(10px);
  display: flex; align-items: flex-start; justify-content: space-between;
  transition: all .3s ease;
}
.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  box-shadow: 0 0 30px rgba(59,130,246,.12);
}
.stat-info .stat-value { font-size: 30px; font-weight: 800; line-height: 1.1; letter-spacing: -.02em; color: var(--text); }
.stat-info .stat-label { font-size: 13px; color: var(--text-2); margin-top: 6px; font-weight: 500; }
.stat-info .stat-trend { font-size: 12px; margin-top: 8px; display: flex; align-items: center; gap: 4px; }
.stat-trend.up { color: var(--success); }
.stat-trend.down { color: var(--danger); }
.stat-icon {
  width: 46px; height: 46px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; background: var(--accent-soft); color: var(--accent);
}
.stat-icon svg { width: 22px; height: 22px; }
/* 统计卡配色变体 */
.stat-card .stat-value.blue,   .stat-card .stat-icon.blue   { color: var(--accent); }
.stat-card .stat-icon.blue   { background: var(--accent-soft); }
.stat-card .stat-value.green,  .stat-card .stat-icon.green  { color: var(--success); }
.stat-card .stat-icon.green  { background: var(--success-soft); }
.stat-card .stat-value.orange, .stat-card .stat-icon.orange { color: var(--warning); }
.stat-card .stat-icon.orange { background: var(--warning-soft); }
.stat-card .stat-value.purple, .stat-card .stat-icon.purple { color: #a78bfa; }
.stat-card .stat-icon.purple { background: rgba(167,139,250,.15); }
.stat-card .stat-value.red,    .stat-card .stat-icon.red    { color: var(--danger); }
.stat-card .stat-icon.red    { background: var(--danger-soft); }
.stat-card .stat-value.cyan,   .stat-card .stat-icon.cyan   { color: var(--cyan); }
.stat-card .stat-icon.cyan   { background: var(--cyan-soft); }

/* 表格 */
.table-wrap { overflow-x: auto; }
table.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
table.data-table thead th {
  background: var(--surface-2); padding: 12px 16px; text-align: left; font-weight: 600;
  color: var(--text-2); font-size: 12px; text-transform: uppercase; letter-spacing: .5px;
  border-bottom: 1px solid var(--border); white-space: nowrap;
}
table.data-table tbody td {
  padding: 12px 16px; border-bottom: 1px solid var(--border-subtle); vertical-align: middle; color: var(--text);
}
table.data-table tbody tr { transition: background .12s; }
table.data-table tbody tr:hover { background: var(--surface-2); }
table.data-table tbody tr:last-child td { border-bottom: none; }

/* 徽章 */
.badge {
  display: inline-flex; align-items: center; padding: 3px 10px; border-radius: 20px;
  font-size: 12px; font-weight: 600; white-space: nowrap; line-height: 1.5;
}
.badge-blue   { background: var(--accent-soft);  color: #93c5fd; }
.badge-green  { background: var(--success-soft); color: #34d399; }
.badge-yellow { background: var(--warning-soft); color: #fcd34d; }
.badge-red    { background: var(--danger-soft);  color: #fca5a5; }
.badge-gray   { background: var(--surface-2);    color: var(--text-2); }
.badge-purple { background: rgba(167,139,250,.15); color: #a78bfa; }
.badge-cyan   { background: var(--cyan-soft);     color: #67e8f9; }

/* 状态点 */
.status-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; margin-right: 6px; }
.status-dot.confirmed  { background: var(--success); }
.status-dot.pending    { background: var(--warning); }
.status-dot.generating { background: var(--accent); animation: crs-pulse 1.5s infinite; }
.status-dot.failed     { background: var(--danger); }
.status-dot.draft      { background: #a78bfa; }
.status-dot.leave      { background: var(--text-3); }
@keyframes crs-pulse { 0%,100% { opacity: 1; } 50% { opacity: .4; } }

/* Pulse dot（待处理提醒） */
.pulse-dot {
  width: 8px; height: 8px; background: var(--danger); border-radius: 50%;
  position: relative; display: inline-block;
}
.pulse-dot::after {
  content: ''; position: absolute; top: -2px; left: -2px;
  width: 12px; height: 12px; border-radius: 50%; background: var(--danger);
  animation: pulse-glow 2s infinite; opacity: .6;
}
@keyframes pulse-glow {
  0% { transform: scale(1); opacity: .6; }
  100% { transform: scale(2.5); opacity: 0; }
}

/* 迷你柱状图（纯 CSS） */
.mini-bars { display: flex; align-items: flex-end; gap: 6px; height: 40px; }
.mini-bar { flex: 1; border-radius: 3px 3px 0 0; min-width: 8px; transition: height .3s ease; background: var(--accent); }
.mini-bar:hover { opacity: .8; }

/* 环形图 */
.donut-wrap { display: flex; align-items: center; gap: 24px; }
.donut { width: 120px; height: 120px; border-radius: 50%; position: relative; display: flex; align-items: center; justify-content: center; }
.donut-hole { width: 72px; height: 72px; border-radius: 50%; background: var(--surface); display: flex; align-items: center; justify-content: center; font-size: 22px; font-weight: 800; position: absolute; }
.donut-legend { display: flex; flex-direction: column; gap: 8px; }
.legend-item { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.legend-dot { width: 10px; height: 10px; border-radius: 3px; flex-shrink: 0; }

.info-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.empty-state { text-align: center; padding: 48px 24px; color: var(--text-2); }
.empty-state .icon { font-size: 44px; margin-bottom: 12px; opacity: .3; }
.empty-state p { font-size: 14px; }
.content-snip { max-width: 340px; color: var(--text-2); font-size: 13px; white-space: pre-wrap; word-break: break-all; line-height: 1.5; }

/* ============ 登录页（暗色·玻璃拟态） ============ */
body.admin-login-page {
  background: var(--bg);
  display: flex; align-items: center; justify-content: center; min-height: 100vh;
}

.login-container {
  display: flex; width: 900px; max-width: 92vw; min-height: 520px;
  background: rgba(17,24,39,.80); backdrop-filter: blur(16px);
  border: 1px solid var(--border); border-radius: 20px; overflow: hidden;
  box-shadow: 0 0 0 1px rgba(255,255,255,.03), 0 25px 60px -12px rgba(0,0,0,.55);
  position: relative; z-index: 1;
}
.brand-side {
  width: 340px; min-width: 340px; position: relative; overflow: hidden;
  background: linear-gradient(145deg, #0c1222 0%, #080d18 100%);
  display: flex; flex-direction: column; justify-content: center; padding: 44px 36px;
}
.brand-side::before {
  content: ""; position: absolute; top: -80px; right: -80px; width: 260px; height: 260px;
  background: radial-gradient(circle, rgba(59,130,246,.20), transparent 70%); border-radius: 50%;
}
.brand-icon {
  width: 52px; height: 52px; border-radius: 14px; z-index: 1;
  background: var(--gradient-accent);
  display: flex; align-items: center; justify-content: center; margin-bottom: 28px;
  box-shadow: 0 8px 24px rgba(59,130,246,.35);
}
.brand-icon svg { width: 26px; height: 26px; stroke: #fff; stroke-width: 2; fill: none; }
.brand-title {
  font-size: 23px; font-weight: 800; letter-spacing: -.3px; line-height: 1.3; margin-bottom: 14px;
  background: var(--gradient-accent); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  z-index: 1;
}
.brand-desc { color: var(--text-2); font-size: 13.5px; line-height: 1.7; z-index: 1; }
.brand-features { margin-top: 32px; display: flex; flex-direction: column; gap: 12px; z-index: 1; }
.bf-item { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--text-2); }
.bf-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--success); flex-shrink: 0; box-shadow: 0 0 8px rgba(16,185,129,.5); }
.form-side { flex: 1; display: flex; flex-direction: column; justify-content: center; padding: 44px 46px; background: rgba(17,24,39,.80); }
.form-header { margin-bottom: 32px; }
.form-header h2 { font-size: 21px; font-weight: 700; margin-bottom: 6px; color: var(--text); }
.form-header p { color: var(--text-2); font-size: 14px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--text-2); margin-bottom: 8px; }
.form-input {
  width: 100%; padding: 13px 16px; background: rgba(30,41,59,.6); border: 1px solid var(--border);
  border-radius: 10px; color: var(--text); font-size: 14.5px; outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.form-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-ring); }
.form-input::placeholder { color: #475569; }
.btn-login {
  width: 100%; padding: 14px; background: var(--gradient-accent);
  color: #fff; border: none; border-radius: 10px; font-size: 15px; font-weight: 700;
  cursor: pointer; transition: all .3s ease; letter-spacing: .3px;
}
.btn-login:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(59,130,246,.4);
}
.btn-login:active { transform: translateY(0); }
.flash-msg { padding: 11px 16px; border-radius: 9px; font-size: 13.5px; margin-bottom: 18px; animation: crs-fadeIn .3s ease; }
.flash-msg.danger { background: var(--danger-soft); border: 1px solid rgba(239,68,68,.3); color: #fca5a5; }
@keyframes crs-fadeIn { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }
.security-hint { margin-top: 24px; text-align: center; font-size: 12px; color: var(--text-3); display: flex; align-items: center; justify-content: center; gap: 6px; }
.security-hint svg { width: 14px; height: 14px; stroke: var(--text-3); }

/* 通用顶栏（编辑器等独立页复用） */
.topbar {
  display: flex; align-items: center; gap: 16px; padding: 16px 28px;
  background: rgba(10,14,26,.85); border-bottom: 1px solid var(--border); flex-wrap: wrap;
  backdrop-filter: blur(16px);
}
.topbar h1 { font-size: 18px; margin: 0; }
.topbar .meta { color: var(--text-2); font-size: 14px; }

/* ============ 课评编辑器（独立页） ============ */
.toolbar { display: flex; align-items: center; gap: 12px; padding: 14px 28px; flex-wrap: wrap; background: var(--surface-2); border-bottom: 1px solid var(--border); }
#progress { color: var(--text-2); font-size: 14px; }
#busy { color: var(--warning); font-size: 14px; }
#flash {
  position: fixed; top: 18px; right: 18px; background: var(--success); color: #fff;
  padding: 8px 14px; border-radius: var(--radius-xs); opacity: 0; transition: opacity .3s; font-size: 14px; z-index: 300;
}
.tags { padding: 10px 28px 0; }
.tag {
  display: inline-block; background: var(--accent-soft); border: 1px solid var(--border);
  color: var(--text-2); padding: 6px 14px; border-radius: 20px; font-size: 13px;
  margin: 0 6px 6px 0; cursor: pointer; transition: all .3s ease;
}
.tag:hover { border-color: var(--accent); color: var(--text); background: rgba(59,130,246,.18); }
.tag.active {
  background: var(--accent); color: #fff; border-color: var(--accent);
}
.list { display: grid; grid-template-columns: repeat(auto-fill, minmax(360px, 1fr)); gap: 16px; padding: 16px 28px 60px; }
.review-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  backdrop-filter: blur(10px); padding: 14px; display: flex; flex-direction: column;
  transition: all .3s ease; position: relative; overflow: hidden;
}
.review-card::before {
  content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%;
  background: var(--gradient-accent); opacity: 0; transition: opacity .3s;
}
.review-card:hover { border-color: var(--border-strong); box-shadow: 0 0 30px rgba(59,130,246,.12); transform: translateY(-2px); }
.review-card:hover::before { opacity: 1; }
.rc-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; position: relative; z-index: 1; }
.rc-name { font-weight: 600; font-size: 15px; }
.rc-text {
  width: 100%; min-height: 200px; border: 1px solid var(--border); border-radius: var(--radius-xs);
  padding: 12px; font-size: 13px; line-height: 1.6; resize: vertical; color: var(--text); font-family: inherit;
  background: rgba(30,41,59,.5); position: relative; z-index: 1;
}
.rc-text:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-ring); }
.rc-text:disabled { background: var(--surface-2); }
.rc-tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 8px; position: relative; z-index: 1; }
.tag.chip { margin: 0; user-select: none; }
.tag.chip.on { background: var(--accent); color: #fff; border-color: var(--accent); }
.rc-note {
  width: 100%; min-height: 38px; border: 1px solid var(--border); border-radius: var(--radius-xs);
  padding: 8px 12px; font-size: 13px; line-height: 1.5; resize: vertical; color: var(--text); font-family: inherit;
  background: rgba(30,41,59,.5); position: relative; z-index: 1; margin-bottom: 8px;
}
.rc-note:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-ring); }
.rc-actions { display: flex; gap: 6px; margin-top: 10px; flex-wrap: wrap; position: relative; z-index: 1; }
.btn-mini { background: var(--accent-soft); color: var(--accent); border: none; padding: 6px 12px; border-radius: 7px; font-size: 12px; cursor: pointer; transition: all .2s ease; }
.btn-mini:hover { background: rgba(59,130,246,.22); }
.score { font-size: 12px; color: var(--text-2); margin: 4px 0; }
.score b { color: var(--text); }
.warn { color: var(--warning); margin-left: 6px; }
.err { color: var(--danger); font-size: 12px; background: var(--danger-soft); padding: 6px 8px; border-radius: 6px; margin: 4px 0; }
.warn-banner { background: var(--warning-soft); color: var(--warning-strong, #854F0B); border: 1px solid var(--warning, #BA7517); border-radius: 8px; padding: 10px 14px; margin: 12px 0; font-size: 13px; line-height: 1.6; }
.warn-banner a { color: inherit; text-decoration: underline; font-weight: 500; }
.badge-pending    { background: var(--accent-soft);  color: #93c5fd; }
.badge-generating { background: var(--warning-soft); color: #fcd34d; }
.badge-draft      { background: var(--success-soft); color: #34d399; }
.badge-confirmed  { background: var(--accent-soft);  color: #93c5fd; }
.badge-leave      { background: var(--surface-2);    color: var(--text-2); }
.badge-failed     { background: var(--danger-soft);  color: #fca5a5; }

/* ============ 学生档案（独立页） ============ */
.wrap { max-width: 860px; margin: 0 auto; padding: 24px 20px 60px; position: relative; z-index: 1; }
.wrap h1 { font-size: 20px; margin: 0 0 4px; }
.timeline { border-left: 2px solid var(--border); padding-left: 20px; margin-left: 6px; }
.tl-item { margin-bottom: 18px; position: relative; }
.tl-item::before {
  content: ''; position: absolute; left: -25px; top: 6px;
  width: 8px; height: 8px; border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-ring);
}
.tl-date { font-size: 12px; color: var(--text-2); }
.tl-class { font-size: 12px; color: var(--accent); margin: 2px 0; }
.tl-content { font-size: 14px; line-height: 1.7; white-space: pre-wrap; background: var(--surface-2); padding: 12px; border-radius: 10px; }
.summary { white-space: pre-wrap; font-size: 14px; line-height: 1.8; background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-xs); padding: 12px; }
.empty { color: var(--text-2); font-size: 13px; }

/* ============ 课评分享卡（独立页 / 导出 PNG） ============ */
.stage { display: flex; justify-content: center; padding: 32px; position: relative; z-index: 1; }
.pcard {
  width: 360px; background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; backdrop-filter: blur(12px); padding: 24px;
  box-shadow: var(--shadow);
}
.pcard.skill    { border-top: 6px solid var(--success); }
.pcard.academic { border-top: 6px solid var(--warning); }
.pcard.work     { border-top: 6px solid var(--accent); }
.pcard.general  { border-top: 6px solid var(--danger); }
.pcard .badge { display: inline-block; font-size: 12px; padding: 3px 10px; border-radius: 12px; background: var(--accent-soft); color: #93c5fd; }
.pcard .ttl { font-size: 22px; font-weight: 700; margin: 14px 0 6px; }
.pcard .meta { color: var(--text-2); font-size: 13px; }
.pcard .body { font-size: 14px; line-height: 1.9; white-space: pre-wrap; min-height: 120px; }
.pcard .org { margin-top: 14px; font-size: 13px; color: var(--text-2); }
.pcard .btn { background: var(--gradient-accent); color: #fff; border: none; padding: 10px 18px; border-radius: var(--radius-xs); font-size: 14px; cursor: pointer; transition: all .3s ease; }
.pcard .btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(59,130,246,.35); }

/* ============ 自定义滚动条 ============ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(59,130,246,.3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(59,130,246,.5); }

/* ============ 页面标题区 ============ */
.page-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 28px; gap: 20px;
  flex-wrap: wrap;
}
.ph-title {
  font-size: 26px; font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  line-height: 1.2; margin: 0;
}
.ph-sub { color: var(--text-3); font-size: 14px; margin-top: 6px; }
.ph-right { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }

/* ============ 渐变按钮 ============ */
.btn-gradient {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 22px; border-radius: var(--radius-xs);
  background: var(--gradient-accent);
  color: #fff; font-size: 14px; font-weight: 600;
  border: none; cursor: pointer; text-decoration: none;
  transition: all .25s ease; box-shadow: 0 2px 12px rgba(59,130,246,.25);
}
.btn-gradient:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(59,130,246,.45);
}
.btn-gradient svg { flex-shrink: 0; }

/* ============ 图标按钮 ============ */
.btn-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: var(--radius-xs);
  border: 1px solid var(--border-strong); background: transparent;
  color: var(--text-3); cursor: pointer; transition: all .2s ease;
  padding: 0; font-size: 14px;
}
.btn-icon:hover { border-color: var(--accent); color: var(--accent); background: rgba(14,165,233,.08); }
.btn-icon-danger:hover { border-color: var(--danger); color: var(--danger); background: rgba(239,68,68,.08); }

/* ============ 表单卡片 ============ */
.form-card { max-width: 520px; padding: 28px 30px; }

/* ============ Checkbox 标签（暗色） ============ */
.checkbox-label {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-radius: var(--radius-xs);
  background: rgba(15,23,42,.3); border: 1px solid var(--border);
  cursor: pointer; transition: all .2s ease; font-size: 14px;
}
.checkbox-label:hover { border-color: var(--accent); background: rgba(14,165,233,.05); }
.checkbox-label input[type="checkbox"] {
  width: 17px; height: 17px; accent-color: var(--accent); cursor: pointer;
}

/* ============ 学生标签 ============ */
.student-tag {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 7px 15px; border-radius: 20px;
  background: rgba(59,130,246,.1); border: 1px solid rgba(59,130,246,.18);
  color: var(--accent); font-size: 13px; font-weight: 500;
}

/* ============ Glass 按钮（描边风格） ============ */
.btn-glass {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 20px; border-radius: var(--radius-xs);
  background: rgba(15,23,42,.5);
  border: 1px solid var(--border-strong);
  color: var(--text-2); font-size: 14px; font-weight: 500;
  cursor: pointer; text-decoration: none; transition: all .2s ease;
}
.btn-glass:hover {
  border-color: var(--accent); color: var(--accent);
  background: rgba(14,165,233,.06);
}
.btn-glass.btn-danger-outline:hover {
  border-color: var(--danger); color: var(--danger);
  background: rgba(239,68,68,.06);
}
.btn-glass svg { flex-shrink: 0; }

/* ============ 快捷入口卡片（引导区） ============ */
.quick-item-card {
  display: flex; flex-direction: column; gap: 8px;
  padding: 22px 20px; text-decoration: none; color: inherit;
  transition: all .3s ease; position: relative; overflow: hidden;
}
.quick-item-card:not(.disabled):hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 35px rgba(0,0,0,.3), 0 0 0 1px rgba(59,130,246,.2);
  border-color: rgba(59,130,246,.3);
}
.quick-item-card.disabled { opacity: .5; cursor: not-allowed; }
.qic-icon { font-size: 28px; }
.quick-item-card b { font-size: 15px; font-weight: 700; color: var(--text); }
.quick-item-card span { font-size: 13px; color: var(--text-3); line-height: 1.5; }

/* ============ 班级卡片网格 ============ */
.class-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 22px;
}

/* ---- 玻璃卡片基础（增强版） ---- */
.glass-card, .card {
  background: var(--bg-card);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all .3s cubic-bezier(.4,0,.2,1);
}
.glass-card:hover, .card:hover {
  border-color: rgba(59,130,246,.4);
  box-shadow: 0 0 36px rgba(59,130,246,.12), 0 8px 32px rgba(0,0,0,.3);
  transform: translateY(-3px);
}

/* ---- 班级卡片（对标参考 HTML 的 class-card） ---- */
.class-card {
  display: flex;
  flex-direction: column;
  padding: 24px;
  cursor: default;
  position: relative;
  overflow: hidden;
}
/* hover 左侧渐变光条 */
.class-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: linear-gradient(to bottom, var(--accent), var(--cyan));
  opacity: 0;
  transition: opacity .35s ease;
}
.class-card:hover::before { opacity: 1; }
.class-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 48px rgba(0,0,0,.35), 0 0 0 1px rgba(59,130,246,.2), 0 0 40px rgba(59,130,246,.08);
}

/* 卡片头部：名称 + 类型 + 人数 */
.cc-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 18px;
}
.cc-title-group { display: flex; flex-direction: column; gap: 8px; }
.cc-name {
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  letter-spacing: -0.3px;
}
.cc-type {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  background: var(--cyan-soft);
  color: var(--cyan);
  width: fit-content;
}
.cc-student-count {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-2);
  font-size: 13px;
  padding: 6px 12px;
  border-radius: 10px;
  background: var(--surface-2);
  white-space: nowrap;
  flex-shrink: 0;
}
.cc-student-count svg { opacity: .7; flex-shrink: 0; }

/* 元数据区（双列 + 分隔线） */
.cc-meta {
  display: flex;
  gap: 20px;
  margin: 0 0 18px;
  padding: 16px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}
.cc-meta-item {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}
.cc-meta-label {
  font-size: 12px;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  font-weight: 500;
}
.cc-meta-value {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

/* 底部操作区 */
.cc-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  gap: 10px;
}
.cc-enter-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 22px;
  background: var(--gradient-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-xs);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all .25s ease;
  letter-spacing: 0.3px;
}
.cc-enter-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(59,130,246,.4);
}
.cc-enter-btn:active { transform: translateY(0); }
.cc-enter-btn svg { transition: transform .2s ease; }
.cc-enter-btn:hover svg { transform: translateX(3px); }

.cc-delete-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px; height: 34px;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  color: var(--text-3);
  cursor: pointer;
  transition: all .25s ease;
  flex-shrink: 0;
}
.cc-delete-btn:hover {
  background: var(--danger-soft);
  border-color: rgba(239,68,68,.3);
  color: var(--danger);
}

/* ============ 空状态（大） ============ */
.empty-state-lg {
  display: flex; flex-direction: column; align-items: center;
  text-align: center; padding: 60px 30px;
}
.empty-icon { font-size: 48px; margin-bottom: 16px; }
.empty-state-lg h3 { font-size: 20px; font-weight: 700; color: var(--text); margin: 0 0 8px; }
.empty-state-lg p { color: var(--text-3); font-size: 14px; margin: 0 0 22px; }

/* ============ 提醒条内容 ============ */
.reminder-content { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; }
.reminder-content .r-list { margin: 8px 0 0; padding-left: 18px; }
.reminder-content .r-list li { margin-bottom: 4px; color: var(--text-2); }

/* ============ 暗色表单 ============ */
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block; font-size: 13px; font-weight: 600;
  color: var(--text-2); margin-bottom: 8px;
}
.form-input {
  width: 100%; padding: 11px 14px; border-radius: var(--radius-xs);
  background: rgba(15,23,42,.5); border: 1px solid var(--border-strong);
  color: var(--text); font-size: 14px; outline: none;
  transition: border-color .2s ease, box-shadow .2s ease;
  box-sizing: border-box;
}
.form-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-ring); }
.form-input::placeholder { color: var(--text-3); }
select.form-input { appearance: auto; cursor: pointer; }

/* ============ Glass 化 Stat Card ============ */
.stat-card {
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  background: rgba(15,23,42,.55);
  border: 1px solid var(--border);
}

/* ============ 暗色数据表格增强 ============ */
.data-table thead th {
  background: rgba(15,23,42,.7);
  border-bottom: 1px solid var(--border-strong);
  color: var(--text-2); font-weight: 600; font-size: 12px;
  text-transform: uppercase; letter-spacing: .05em;
  padding: 12px 16px;
}
.data-table tbody td {
  border-bottom: 1px solid rgba(255,255,255,.04);
  padding: 12px 16px; font-size: 13px;
}
.data-table tbody tr:hover {
  background: rgba(59,130,246,.04);
}
.data-table tbody tr:last-child td { border-bottom: none; }

/* ============ Section 卡片 glass 化 ============ */
.card.section {
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  background: rgba(15,23,42,.5);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.card-body { padding: 22px 24px; }
.section-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 18px; flex-wrap: wrap; gap: 8px;
}
.section-title { font-size: 16px; font-weight: 700; color: var(--text); }
.section-action {
  font-size: 13px; color: var(--accent); text-decoration: none;
  font-weight: 500; transition: color .2s;
}
.section-action:hover { color: var(--accent-strong); }

/* ============ 时间范围药丸切换 ============ */
.range-pills { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.range-pill {
  padding: 6px 16px; border-radius: 20px; font-size: 13px;
  text-decoration: none; font-weight: 600; transition: all .2s ease;
  border: 1px solid transparent;
}
.range-pill.active {
  background: var(--gradient-accent); color: #fff;
  box-shadow: 0 2px 10px rgba(59,130,246,.3);
}
.range-pill:not(.active) {
  background: rgba(15,23,42,.5); color: var(--text-3);
  border-color: var(--border);
}
.range-pill:not(.active):hover {
  border-color: var(--accent); color: var(--accent);
}

/* ============ 进度条暗色版 ============ */
.progress-bar {
  height: 8px; background: rgba(15,23,42,.6);
  border-radius: 4px; overflow: hidden;
}
.progress-fill {
  height: 100%; border-radius: 4px;
  background: var(--gradient-accent);
  transition: width .4s ease;
}

/* ============ 快捷入口网格（glass） ============ */
.quick-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}
.quick-item {
  display: flex; align-items: center; gap: 11px;
  padding: 16px 18px; border-radius: var(--radius-sm);
  background: rgba(15,23,42,.4); border: 1px solid var(--border);
  text-decoration: none; color: var(--text-2);
  font-size: 13px; font-weight: 600;
  transition: all .2s ease;
}
.quick-item:hover {
  background: rgba(59,130,246,.08);
  border-color: rgba(59,130,246,.25);
  color: var(--accent); transform: translateY(-1px);
}
.quick-item svg { flex-shrink: 0; opacity: .7; }
.quick-item:hover svg { opacity: 1; }

/* ============ 趋势柱状图（蓝青渐变） ============ */
.bar-chart {
  display: flex; align-items: flex-end; gap: 6px;
  height: 160px; padding: 0 4px;
}
.bar-col {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: flex-end; height: 100%;
}
.bar-value { font-size: 11px; font-weight: 700; color: var(--text-3); margin-bottom: 4px; }
.bar-value.today { color: var(--accent); }
.bar-fill {
  width: 100%; max-width: 38px;
  border-radius: 5px 5px 0 0;
  background: linear-gradient(180deg, rgba(59,130,246,.5), rgba(6,182,212,.3));
  transition: height .4s ease; min-height: 3px;
}
.bar-fill.today { background: var(--gradient-accent); }
.bar-label { font-size: 10px; color: var(--text-3); margin-top: 6px; white-space: nowrap; }
.bar-label.today { color: var(--accent); font-weight: 700; }

/* ============ 班级详情页 ============ */
.detail-page-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 28px 32px 24px;
  gap: 20px;
}
.dph-info { min-width: 0; }
.dph-name {
  font-size: 26px; font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  margin-bottom: 6px; letter-spacing: -0.3px;
}
.dph-meta {
  display: flex; align-items: center; gap: 8px;
  color: var(--text-3); font-size: 14px;
}
.type-pill {
  display: inline-flex; align-items: center;
  padding: 3px 12px; border-radius: 20px;
  background: rgba(6,182,212,.12); color: var(--cyan);
  font-size: 12px; font-weight: 600; letter-spacing: 0.3px;
}
.dph-divider { opacity: .4; }
.dph-count { display: flex; align-items: center; gap: 5px; }

/* ---- 详情区块 ---- */
.detail-section {
  background: rgba(15,23,42,.55); backdrop-filter: blur(16px) saturate(1.2);
  border: 1px solid rgba(148,163,184,.1); border-radius: var(--radius);
  padding: 24px 28px; margin-bottom: 20px;
  transition: border-color .3s ease, box-shadow .3s ease;
}
.detail-section:hover {
  border-color: rgba(59,130,246,.18);
  box-shadow: 0 0 30px rgba(59,130,246,.06);
}

.ds-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px;
}
.ds-title {
  display: flex; align-items: center; gap: 8px;
  font-size: 16px; font-weight: 700; color: var(--text); margin: 0;
}
.ds-title svg { flex-shrink: 0; }
.ds-count { color: var(--text-3); font-weight: 400; font-size: 14px; }
.ds-desc { color: var(--text-3); font-size: 13px; margin: 0 0 16px; line-height: 1.5; }

/* ---- 空状态 ---- */
.empty-state {
  text-align: center; padding: 36px 20px;
  border: 1px dashed rgba(148,163,184,.15); border-radius: var(--radius-sm);
  background: rgba(15,23,42,.35);
}
.empty-icon { font-size: 36px; margin-bottom: 10px; opacity: .6; }
.empty-text { color: var(--text-3); font-size: 14px; margin: 0; }
.empty-text a { color: var(--accent); text-decoration: none; font-weight: 600; }
.empty-text a:hover { text-decoration: underline; }

/* ---- 操作栏 ---- */
.action-bar {
  display: flex; gap: 12px; flex-wrap: wrap;
  padding: 18px 28px; margin-bottom: 20px;
}
.inline-form { display: inline; }

/* ---- 导出按钮组 ---- */
.export-btns { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---- 引导卡片区 ---- */
.guide-section { margin-top: 8px; }
.gs-header { margin-bottom: 18px; }
.gs-title {
  font-size: 17px; font-weight: 700; color: var(--text); margin: 0 0 4px;
}
.gs-sub { color: var(--text-3); font-size: 13px; margin: 0; }

.guide-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}

.guide-card {
  position: relative; overflow: hidden;
  display: flex; flex-direction: column;
  background: rgba(15,23,52,.65); backdrop-filter: blur(16px) saturate(1.2);
  border: 1px solid rgba(148,163,184,.1); border-radius: var(--radius);
  padding: 26px 24px; gap: 10px;
  text-decoration: none; color: inherit;
  transition: all .35s cubic-bezier(.4,0,.2,1);
  cursor: pointer;
}
.guide-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--gradient-accent); opacity: 0; transition: opacity .35s ease;
}
.guide-card:hover {
  transform: translateY(-5px);
  border-color: rgba(59,130,246,.35);
  box-shadow: 0 16px 48px rgba(0,0,0,.35), 0 0 40px rgba(59,130,246,.08);
}
.guide-card:hover::before { opacity: 1; }

.guide-card--locked {
  cursor: default; opacity: .72;
}
.guide-card--locked:hover {
  transform: none; border-color: rgba(148,163,184,.1);
  box-shadow: none;
}
.guide-card--locked::before { display: none; }

.gc-icon-wrap {
  width: 52px; height: 52px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 6px;
}
.gc-icon--ai   { background: linear-gradient(135deg, #3b82f6, #06b6d4); box-shadow: 0 4px 16px rgba(59,130,246,.3); }
.gc-icon--locked { background: rgba(148,163,184,.12); }
.gc-icon--archive { background: rgba(139,92,246,.15); }
.gc-icon--card    { background: rgba(245,158,11,.15); }

.gc-title { font-size: 16px; font-weight: 700; color: var(--text); }
.gc-desc { font-size: 13px; color: var(--text-3); line-height: 1.55; margin: 0; }
.gc-arrow {
  position: absolute; bottom: 22px; right: 22px;
  font-size: 18px; color: var(--accent); opacity: 0;
  transform: translateX(-8px); transition: all .3s ease;
  font-weight: 300;
}
.guide-card:hover .gc-arrow { opacity: 1; transform: translateX(0); }

/* 按钮变体 */
.btn-glass.btn-danger {
  color: #f87171; border-color: rgba(239,68,68,.25);
}
.btn-glass.btn-danger:hover {
  background: rgba(239,68,68,.1); border-color: rgba(239,68,68,.45);
  color: #fca5a5;
}
.btn-sm { padding: 8px 16px !important; font-size: 13px !important; }

/* 学生标签列表 */
.student-tag-list {
  display: flex; flex-wrap: wrap; gap: 9px;
}

/* ============ 添加学生横排行 ============ */
#student-rows {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.student-row {
  display: flex;
  align-items: center;
  gap: 12px;
  animation: fadeInUp .2s ease both;
}
.sr-name {
  flex: 1;
  min-width: 0;
}
.sr-nick {
  flex: 1;
  min-width: 0;
}
.ph-hint {
  color: var(--text-3);
  font-size: 13px;
  margin: 10px 0 0;
}
.sr-gender-wrap {
  width: 100px;
  flex-shrink: 0;
}
.sr-gender {
  width: 100%;
  padding: 9px 12px;
  appearance: none;
  -webkit-appearance: none;
  background-color: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  font-size: 14px;
  cursor: pointer;
  transition: border-color .2s, box-shadow .2s;
}
.sr-gender:hover { border-color: var(--accent); }
.sr-gender:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}
.btn-row-remove {
  flex-shrink: 0;
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: rgba(239,68,68,.08);
  color: #f87171;
  border: 1px solid rgba(239,68,68,.18);
  font-size: 13px;
  cursor: pointer;
  transition: all .2s ease;
}
.btn-row-remove:hover {
  background: rgba(239,68,68,.15);
  border-color: rgba(239,68,68,.35);
  transform: scale(1.08);
}

/* 操作栏 */
.form-actions-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  gap: 12px;
}
.btn-add-row {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: var(--radius-xs);
  font-size: 14px;
  font-weight: 500;
  background: transparent;
  color: var(--accent);
  border: 1px dashed var(--border-strong);
  cursor: pointer;
  transition: all .2s ease;
}
.btn-add-row:hover {
  border-color: var(--accent);
  background: rgba(14,165,233,.06);
  color: #38bdf8;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .sidebar { width: 72px; }
  .sidebar-brand .brand-text, .sidebar-brand .brand-sub, .nav-label, .nav-item span { display: none; }
  .sidebar-brand .logo { margin: 0 auto; }
  .nav-item { justify-content: center; padding: 12px; }
  .main { margin-left: 72px; }
  .info-row { grid-template-columns: 1fr; }
  .class-grid { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
  .page-header { flex-direction: column; align-items: flex-start; }
  .detail-page-header { flex-direction: column; align-items: flex-start; padding: 20px 20px 18px; }
  .guide-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
}
@media (max-width: 768px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .content { padding: 16px; }
  .topbar--admin { padding: 0 16px; }
  .container { padding: 0 14px; }
  .login-container { flex-direction: column; max-height: none; }
  .brand-side { display: none; }
  .form-side { padding: 36px 28px; }
  .bg-glow { width: 300px; height: 300px; top: -100px; right: -100px; }
  .class-grid { grid-template-columns: 1fr; }
  .quick-grid { grid-template-columns: 1fr 1fr; }
  .bar-chart { gap: 3px; height: 120px; }
  .detail-page-header { padding: 18px 14px 14px; }
  .dph-name { font-size: 22px; }
  .detail-section { padding: 18px 16px; }
  .ds-header { flex-direction: column; gap: 10px; align-items: flex-start; }
  .action-bar { padding: 14px 16px; }
  .guide-grid { grid-template-columns: 1fr; }
}

/* ============ 课评编辑器三栏界面 (Editor-style Detail) ============ */

/* ---- 顶部栏 ---- */
.ed-topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 28px;
  background: rgba(10,14,26,.85); backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(148,163,184,.1);
  flex-wrap: wrap; gap: 12px;
}
.ed-tb-left {
  display: flex; align-items: center; gap: 16px;
}
.ed-back-link {
  color: var(--text-2); font-size: 13px; text-decoration: none;
  transition: color .2s;
}
.ed-back-link:hover { color: var(--accent); }
.ed-class-name {
  font-size: 20px; font-weight: 700; margin: 0; color: var(--text);
}
.ed-tb-right {
  display: flex; align-items: center; gap: 10px;
}

/* 顶部按钮 */
.btn-ed {
  padding: 8px 20px; border-radius: 8px; font-size: 14px;
  font-weight: 500; cursor: pointer; transition: all .25s ease;
  border: none; font-family: inherit; text-decoration: none; display: inline-flex;
  align-items: center; gap: 6px;
}
.btn-ed--ghost {
  background: transparent; color: var(--text-2);
  border: 1px solid rgba(148,163,184,.2);
}
.btn-ed--ghost:hover { color: var(--text); border-color: rgba(148,163,184,.4); background: rgba(148,163,184,.06); }
.btn-ed--primary {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: #fff; box-shadow: 0 2px 10px rgba(59,130,246,.3);
}
.btn-ed--primary:hover { box-shadow: 0 4px 18px rgba(59,130,246,.45); transform: translateY(-1px); }
.btn-ed--primary:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.btn-ed.btn-sm { padding: 5px 14px; font-size: 13px; }

/* ---- 三栏主体 ---- */
.ed-main {
  display: grid;
  grid-template-columns: 220px 1fr 260px;
  min-height: calc(100vh - 60px);
}

/* ---- 侧栏通用 ---- */
.ed-sidebar {
  background: rgba(15,23,42,.5); backdrop-filter: blur(16px) saturate(1.2);
  display: flex; flex-direction: column;
  overflow-y: auto;
  border-right: 1px solid rgba(148,163,184,.08);
}
.ed-sidebar--right {
  border-right: none; border-left: 1px solid rgba(148,163,184,.08);
}
.ed-sb-header {
  display: flex; align-items: center; gap: 6px;
  padding: 18px 18px 14px;
  border-bottom: 1px solid rgba(148,163,184,.08);
  position: sticky; top: 0; z-index: 2;
  background: rgba(15,23,42,.7); backdrop-filter: blur(16px);
}
.ed-sb-title { font-size: 14px; font-weight: 700; margin: 0; color: var(--text); }
.ed-sb-count { color: var(--text-3); font-size: 13px; }

/* ---- 左栏：学员列表 ---- */
.ed-student-list { padding: 10px 10px; display: flex; flex-direction: column; gap: 3px; }
.ed-student-card {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; border-radius: 10px;
  cursor: pointer; transition: all .2s ease;
  border: 1px solid transparent;
}
.ed-student-card:hover {
  background: rgba(59,130,246,.07); border-color: rgba(59,130,246,.12);
}
.ed-student-card--active {
  background: rgba(59,130,246,.11); border-color: rgba(59,130,246,.28);
  box-shadow: inset 0 0 0 1px rgba(59,130,246,.15);
}
.ed-student-card--active .ed-sc-name { color: var(--accent); font-weight: 700; }
.ed-avatar {
  width: 36px; height: 36px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 14px; flex-shrink: 0;
  color: #fff;
}
.ed-sc-info { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.ed-sc-name { font-size: 14px; font-weight: 500; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ed-sc-badge {
  font-size: 11px; padding: 1px 8px; border-radius: 10px; width: fit-content;
  font-weight: 500;
}
.ed-sc-badge--pending { background: rgba(148,163,184,.12); color: var(--text-3); }
.ed-sc-badge--done { background: rgba(34,197,94,.12); color: #4ade80; }
.ed-empty-students {
  text-align: center; padding: 30px 16px;
  color: var(--text-3); font-size: 14px;
}
.ed-empty-students p { margin: 0 0 12px; }

/* ---- 中栏：课评编辑区 ---- */
.ed-center {
  padding: 0 32px; overflow-y: auto;
  display: flex; flex-direction: column;
  background: transparent;
}

/* 编辑器标题行 */
.ed-editor-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 24px 0 16px;
  border-bottom: 1px solid rgba(148,163,184,.08);
}
.ed-edit-title { font-size: 18px; font-weight: 700; margin: 0; color: var(--text); }
.ed-tabs { display: flex; gap: 4px; background: rgba(15,23,42,.5); padding: 3px; border-radius: 20px; border: 1px solid rgba(148,163,184,.1); }
.ed-tab {
  padding: 5px 16px; border-radius: 17px; border: none; background: none;
  color: var(--text-3); font-size: 13px; cursor: pointer; transition: all .2s ease;
  font-weight: 500;
}
.ed-tab:hover { color: var(--text); }
.ed-tab--active {
  background: var(--accent); color: #fff; font-weight: 600;
  box-shadow: 0 2px 8px rgba(59,130,246,.35);
}

/* 副标题（课次信息） */
.ed-subtitle {
  font-size: 13px; color: var(--text-3);
  padding: 12px 0 0;
}

/* 课程选择区（替代星星评分） */
.ed-course-section {
  padding: 16px 0;
  border-bottom: 1px solid rgba(148,163,184,.06);
}
.ed-course-selector {
  display: flex; align-items: center; gap: 10px;
}
.ed-course-label {
  font-size: 13px; font-weight: 600; color: var(--text-2);
  white-space: nowrap; min-width: 60px;
}
.ed-course-dropdown {
  padding: 8px 14px; padding-right: 32px;
  appearance: none; -webkit-appearance: none;
  background-color: rgba(15,23,52,.6);
  color: var(--text);
  border: 1px solid rgba(148,163,184,.15);
  border-radius: 8px;
  font-size: 14px; cursor: pointer;
  min-width: 200px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 10px center;
  transition: border-color .2s, box-shadow .2s;
}
.ed-course-dropdown:hover { border-color: var(--accent); }
.ed-course-dropdown:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-ring); }

/* 无课程提示 */
.ed-course-empty {
  text-align: center; padding: 24px 16px;
  background: rgba(15,23,42,.35); border-radius: 12px;
  border: 1px dashed rgba(148,163,184,.15);
}
.ed-course-empty-icon { font-size: 28px; margin-bottom: 8px; }
.ed-course-empty p { color: var(--text-3); font-size: 14px; margin: 0 0 12px; }

/* 优缺描述标签 */
.ed-tags-section { padding: 18px 0 14px; }
.ed-tags-label {
  font-size: 13px; font-weight: 600; color: var(--text-2);
  display: block; margin-bottom: 10px;
}
.ed-tags-row {
  display: flex; flex-wrap: wrap; gap: 7px;
}
.ed-tag-pill {
  padding: 5px 14px; border-radius: 20px; border: 1px solid rgba(148,163,184,.15);
  background: rgba(15,23,42,.45); color: var(--text-2);
  font-size: 13px; cursor: pointer; transition: all .2s ease;
  font-family: inherit;
}
.ed-tag-pill:hover {
  border-color: var(--accent); color: var(--accent);
  background: rgba(59,130,246,.08);
}

/* 正文编辑框 */
.ed-textarea-wrap { padding: 14px 0; flex: 1; display: flex; flex-direction: column; }
.ed-review-text {
  width: 100%; min-height: 300px; flex: 1;
  padding: 18px 20px;
  background: rgba(15,23,42,.5); backdrop-filter: blur(8px);
  border: 1px solid rgba(148,163,184,.12); border-radius: 12px;
  color: var(--text); font-size: 14px; line-height: 1.75;
  resize: vertical; font-family: inherit;
  transition: border-color .2s, box-shadow .2s;
}
.ed-review-text:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}
.ed-review-text::placeholder { color: var(--text-3); }

/* 底部状态栏 */
.ed-editor-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0 24px;
  border-top: 1px solid rgba(148,163,184,.06);
}
.ed-save-status { color: var(--cyan); font-size: 12px; }
.ed-word-count { color: var(--text-3); font-size: 13px; }

/* 空状态 */
.ed-empty-center {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center; padding: 60px 20px;
}
.ed-empty-icon { font-size: 40px; opacity: .3; margin-bottom: 16px; }
.ed-empty-center h3 { font-size: 17px; color: var(--text-2); margin: 0 0 8px; }
.ed-empty-center p { color: var(--text-3); font-size: 14px; margin: 0 0 20px; max-width: 300px; line-height: 1.6; }

/* ---- 右栏：历史课评 ---- */
.ed-history-list { padding: 10px 14px; display: flex; flex-direction: column; gap: 8px; }
.ed-history-empty { text-align: center; padding: 30px 12px; color: var(--text-3); font-size: 13px; }
.ed-history-item {
  padding: 12px 14px; border-radius: 10px;
  background: rgba(15,23,42,.35); border: 1px solid rgba(148,163,184,.07);
  transition: all .2s ease;
}
.ed-history-item:hover { border-color: rgba(59,130,246,.12); background: rgba(15,23,42,.5); }
.ed-hi-date { font-size: 12px; color: var(--accent); margin-bottom: 5px; font-weight: 500; }
.ed-hi-preview { font-size: 13px; color: var(--text-2); line-height: 1.55; }

/* ---- 响应式 ---- */
@media (max-width: 1024px) {
  .ed-main { grid-template-columns: 180px 1fr 220px; }
  .ed-center { padding: 0 20px; }
  .ed-topbar { padding: 14px 18px; }
  .ed-class-name { font-size: 18px; }
}
@media (max-width: 768px) {
  .ed-main { grid-template-columns: 1fr; }
  .ed-sidebar { display: none; }
  .ed-center { padding: 0 14px; }
  .ed-topbar { flex-direction: column; align-items: flex-start; padding: 12px 14px; }
  .ed-review-text { min-height: 240px; }
  .ed-editor-footer { flex-direction: column; align-items: stretch; gap: 6px; }
}

/* 尊重减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}