:root {
  --bg: #f5f6f8;
  --bg-grad:
    radial-gradient(1100px 480px at 85% -8%, #eaf0fd 0%, rgba(234, 240, 253, 0) 62%),
    radial-gradient(900px 420px at -12% 12%, #f0f4fa 0%, rgba(240, 244, 250, 0) 58%),
    #f5f6f8;
  --card: #ffffff;
  --text: #171b26;
  --text-2: #555c6b;
  --text-3: #6f7684;
  --line: #e7eaf0;
  --line-strong: #d9dee7;
  --accent: #3d63f2;
  --accent-deep: #3251d4;
  --accent-soft: #eef1fe;
  --accent-ring: rgba(61, 99, 242, 0.28);
  --ok: #10805a;
  --ok-soft: #e4f5ee;
  --warn: #a06a10;
  --warn-soft: #fbf2df;
  --err: #cc3d3d;
  --err-soft: #fcecec;
  --purple: #6d47d1;
  --purple-soft: #f2ecfb;
  --shadow-1: 0 1px 2px rgba(18, 25, 40, 0.04), 0 2px 6px rgba(18, 25, 40, 0.03);
  --shadow-2: 0 6px 22px rgba(18, 25, 40, 0.07), 0 2px 6px rgba(18, 25, 40, 0.04);
  --shadow-pop: 0 18px 48px rgba(15, 20, 30, 0.14);
  --radius-s: 9px;
  --radius: 14px;
  --radius-l: 18px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --mono: "Cascadia Code", Consolas, "Courier New", monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  font-family: system-ui, -apple-system, "HarmonyOS Sans SC", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg-grad);
  background-attachment: fixed;
  color: var(--text);
  min-height: 100vh;
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
input[type="checkbox"], input[type="radio"] { accent-color: var(--accent); width: 15px; height: 15px; cursor: pointer; touch-action: manipulation; }
::selection { background: #dfe7fd; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: #d3d8e0; border-radius: 6px; border: 2.5px solid transparent; background-clip: padding-box; }
::-webkit-scrollbar-thumb:hover { background: #bcc3cf; background-clip: padding-box; border: 2.5px solid transparent; }
::-webkit-scrollbar-track { background: transparent; }
.app { max-width: 880px; margin: 0 auto; padding: 26px 18px 80px; }

/* ---- 焦点可见性（键盘可达性） ---- */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
.tab:focus-visible, button:focus-visible, .ai-btn:focus-visible { outline-offset: 2px; }

/* ---- 顶部导航（分段控件式） ---- */
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  flex-wrap: wrap;
  padding: 10px 16px;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-1);
  margin-bottom: 22px;
  position: sticky; top: 12px; z-index: 50;
}
.brand { display: flex; align-items: center; gap: 10px; font-size: 15.5px; font-weight: 700; letter-spacing: .2px; }
.brand-logo {
  width: 28px; height: 28px; border-radius: 9px;
  background: linear-gradient(135deg, #6486f7, var(--accent-deep));
  color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700;
  box-shadow: 0 2px 8px rgba(61, 99, 242, 0.32);
}
.tabs {
  display: flex; gap: 3px; flex-wrap: wrap;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 3px;
}
.tab {
  font: inherit; font-size: 13px; font-weight: 550;
  padding: 6.5px 13px; border-radius: 9px;
  border: none; background: transparent; color: var(--text-2);
  cursor: pointer; touch-action: manipulation;
  transition: background .16s var(--ease), color .16s var(--ease), box-shadow .16s var(--ease);
  white-space: nowrap;
}
.tab:hover { background: #fff; color: var(--text); box-shadow: var(--shadow-1); }
.tab.active { background: var(--card); color: var(--accent-deep); font-weight: 650; box-shadow: var(--shadow-1), 0 0 0 1px var(--line); }
.tab-badge {
  display: inline-block; min-width: 17px; padding: 0 5px;
  margin-left: 6px; border-radius: 9px;
  font-size: 10.5px; line-height: 16px; text-align: center;
  font-variant-numeric: tabular-nums;
  background: var(--line); color: var(--text-2);
}
.tab.active .tab-badge { background: var(--accent-soft); color: var(--accent-deep); }
.tab-badge:empty { display: none; }

/* ---- 页面与卡片 ---- */
.page { display: flex; flex-direction: column; gap: 18px; }
.page[hidden] { display: none; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.page > .card { animation: fadeUp .32s var(--ease) both; }
.page > .card:nth-child(2) { animation-delay: .05s; }
.page > .card:nth-child(3) { animation-delay: .1s; }
.page > .card:nth-child(4) { animation-delay: .15s; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 26px 28px;
  box-shadow: var(--shadow-1);
}
.card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 18px; }
.card-title { font-size: 16.5px; font-weight: 700; letter-spacing: .1px; text-wrap: balance; }
.card-desc { margin-top: 6px; font-size: 12.5px; color: var(--text-2); line-height: 1.75; text-wrap: pretty; max-width: 60ch; }

/* ---- 按钮 ---- */
button {
  font: inherit;
  border-radius: 10px;
  border: 1px solid var(--line-strong);
  background: var(--card);
  color: var(--text);
  padding: 9px 17px;
  font-size: 13.5px; font-weight: 550;
  cursor: pointer; touch-action: manipulation;
  transition: background .16s var(--ease), border-color .16s var(--ease), color .16s var(--ease), box-shadow .16s var(--ease), transform .1s var(--ease);
}
button:hover { border-color: #c4cddd; background: #fbfcfe; box-shadow: var(--shadow-1); }
button:active { transform: translateY(1px); }
button:disabled { opacity: .5; cursor: not-allowed; box-shadow: none; }
button.primary {
  background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600;
  box-shadow: 0 2px 10px rgba(61, 99, 242, 0.28);
}
button.primary:hover { background: var(--accent-deep); border-color: var(--accent-deep); box-shadow: 0 4px 14px rgba(61, 99, 242, 0.32); }
button.primary:disabled:hover { background: var(--accent); opacity: .5; box-shadow: none; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }

/* ---- 登录页 ---- */
.qr-area { display: flex; flex-direction: column; align-items: center; }
.qr-box {
  position: relative;
  width: 236px; height: 236px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  box-shadow: var(--shadow-2);
}
.qr-box::after {
  content: ""; position: absolute; inset: 8px;
  border: 1px dashed var(--line);
  border-radius: calc(var(--radius) - 7px);
  pointer-events: none;
}
.qr-box img { width: 100%; height: 100%; object-fit: contain; display: none; }
.qr-box img.show { display: block; }
.qr-ph { display: flex; flex-direction: column; align-items: center; gap: 12px; color: var(--text-3); font-size: 13px; }
.qr-ph.hide { display: none; }
.spinner {
  width: 34px; height: 34px;
  border: 3px solid var(--line);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.status-row { display: flex; align-items: center; gap: 9px; margin-top: 22px; font-size: 14.5px; font-weight: 550; }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--text-3); flex: none; }
.dot.waiting { background: var(--accent); animation: pulse 1.6s ease-in-out infinite; }
.dot.scanned { background: var(--warn); animation: pulse 1.6s ease-in-out infinite; }
.dot.ok { background: var(--ok); }
.dot.err { background: var(--err); }
@keyframes pulse { 50% { opacity: 0.35; } }
.status-sub { margin-top: 7px; font-size: 12.5px; color: var(--text-2); min-height: 17px; line-height: 1.5; text-align: center; }
.actions { display: flex; gap: 10px; margin-top: 18px; justify-content: center; }

.login-ok {
  margin-top: 22px; padding: 16px 18px;
  border: 1px solid #cfeede; border-radius: var(--radius);
  background: var(--ok-soft);
}
.login-ok[hidden] { display: none; }
.ok-row { display: flex; gap: 12px; align-items: flex-start; }
.ok-icon {
  width: 30px; height: 30px; border-radius: 50%; flex: none;
  background: var(--ok); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 700;
}
.ok-title { font-size: 14.5px; font-weight: 600; }
.ok-sub { margin-top: 4px; font-size: 12.5px; color: var(--text-2); line-height: 1.65; }

.hint { margin-top: 18px; font-size: 12px; color: var(--text-3); line-height: 1.75; }
.hint.center { text-align: center; }
.hint-left { margin-top: 12px; font-size: 12px; color: var(--text-3); line-height: 1.75; }

.badge {
  font-size: 11.5px; font-weight: 600; padding: 2.5px 9px; border-radius: 999px;
  background: var(--ok-soft); color: var(--ok); white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.badge.warn { background: var(--warn-soft); color: var(--warn); }
.badge.gray { background: var(--accent-soft); color: var(--accent-deep); }
.badge:empty { display: none; }

/* ---- 课程选择页 ---- */
.course-loading { display: flex; align-items: center; gap: 12px; color: var(--text-2); font-size: 13.5px; padding: 14px 2px; }
.course-loading .spinner { width: 22px; height: 22px; border-width: 2.5px; }
.course-toolbar { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.course-toolbar input[type="text"] {
  flex: 1; min-width: 180px;
  padding: 8px 12px;
  border: 1px solid var(--line); border-radius: var(--radius-s);
  background: var(--card); color: var(--text);
  font: inherit; font-size: 13.5px; outline: none;
  transition: border-color .16s, box-shadow .16s;
}
.course-toolbar input[type="text"]:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-ring); }
.course-list { border: 1px solid var(--line); border-radius: var(--radius); max-height: 372px; overflow: auto; background: var(--card); }
.course-item {
  display: flex; gap: 11px; align-items: center;
  padding: 10px 14px; border-bottom: 1px solid var(--line);
  cursor: pointer; user-select: none; touch-action: manipulation;
  transition: background .14s;
}
.course-item:last-child { border-bottom: none; }
.course-item:hover { background: #f7f9fd; }
.course-item.filtered { display: none; }
.course-item input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--accent); flex: none; cursor: pointer; }
.course-item-main { min-width: 0; }
.course-item-name { font-size: 14px; font-weight: 550; line-height: 1.45; word-break: break-all; }
.course-item-sub { font-size: 12px; color: var(--text-3); margin-top: 2px; }
.course-actions { display: flex; align-items: center; gap: 12px; margin-top: 16px; flex-wrap: wrap; }
.progress { font-size: 12.5px; color: var(--text-2); font-variant-numeric: tabular-nums; }

.guest-box, .empty-state {
  padding: 30px 20px; text-align: center;
  border: 1.5px dashed var(--line-strong); border-radius: var(--radius);
  color: var(--text-2); font-size: 13.5px; line-height: 1.85;
}
.guest-box button, .empty-state button { margin-top: 12px; }
.error-box {
  margin-top: 14px; padding: 10px 14px; border-radius: 10px;
  background: var(--err-soft); color: var(--err);
  font-size: 12.5px; line-height: 1.7; display: none;
}
.error-box.show { display: block; }
.empty-box { padding: 18px; text-align: center; color: var(--text-2); font-size: 13px; line-height: 1.8; }
.debug-details { margin-top: 12px; font-size: 12px; color: var(--text-3); }
.debug-details summary { cursor: pointer; user-select: none; }
.debug-details pre {
  margin-top: 8px; padding: 10px; border-radius: 8px;
  background: var(--bg); border: 1px solid var(--line);
  font-size: 11px; line-height: 1.6; overflow: auto; max-height: 200px;
  white-space: pre-wrap; word-break: break-all;
}

/* ---- 任务清单页 ---- */
.sum-pill {
  display: inline-block; font-size: 12.5px; font-weight: 600;
  padding: 3px 12px; border-radius: 999px; margin: 0 6px 6px 0;
  font-variant-numeric: tabular-nums;
}
.sum-pill.todo { background: var(--warn-soft); color: var(--warn); }
.sum-pill.done { background: var(--ok-soft); color: var(--ok); }
.sum-pill.plain { background: var(--bg); color: var(--text-2); border: 1px solid var(--line); }
.sum-pill.resubmit { background: var(--warn-soft); color: var(--warn); }
.task-summary { font-size: 13px; margin-bottom: 14px; }
.group { margin-top: 6px; }
.group-head { display: flex; align-items: center; gap: 8px; font-size: 14.5px; font-weight: 600; padding: 8px 2px; }
.group-head.clickable { cursor: pointer; }
.group-head .count { font-size: 12px; color: var(--text-3); font-weight: 500; font-variant-numeric: tabular-nums; }
.group-head .chev { margin-left: auto; color: var(--text-3); font-size: 12px; }
.g-dot { width: 8px; height: 8px; border-radius: 50%; flex: none; }
.g-dot.todo { background: var(--warn); }
.g-dot.done { background: var(--ok); }
.task-list { display: flex; flex-direction: column; gap: 8px; margin: 6px 0 16px; }
.task-list.collapsed { display: none; }

.course-group { border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 10px; overflow: hidden; background: var(--card); }
.cg-head {
  display: flex; align-items: center; gap: 9px;
  padding: 10px 14px; background: #fafbfd;
  cursor: pointer; user-select: none; touch-action: manipulation;
  transition: background .14s;
}
.cg-head:hover { background: #f3f6fb; }
.cg-head:hover .cg-name { color: var(--accent-deep); }
.cg-name { font-size: 13.5px; font-weight: 600; flex: 1; min-width: 0; word-break: break-all; transition: color .14s; }
.cg-count {
  flex: none; font-size: 11.5px; color: var(--text-2);
  background: var(--card); border: 1px solid var(--line);
  padding: 1px 9px; border-radius: 999px;
  font-variant-numeric: tabular-nums;
}
.cg-nearest { flex: none; font-size: 11.5px; font-weight: 600; color: var(--warn); font-variant-numeric: tabular-nums; }
.cg-nearest.urgent { color: var(--err); }
.chev { flex: none; color: var(--text-3); font-size: 12px; }
.cg-body { padding: 10px 12px; display: flex; flex-direction: column; gap: 8px; }
.cg-body.collapsed { display: none; }
.cg-body .task-item { border-radius: var(--radius-s); }

.task-item {
  display: flex; gap: 10px; align-items: flex-start; padding: 11px 14px;
  border: 1px solid var(--line); border-radius: 11px;
  background: var(--card); transition: border-color .15s, box-shadow .15s;
}
.task-item:hover { border-color: var(--line-strong); box-shadow: var(--shadow-1); }
.task-item.is-todo { border-left: 3px solid var(--warn); }
.task-item.is-done { border-left: 3px solid var(--ok); }
.type-badge { flex: none; font-size: 11px; font-weight: 600; padding: 2.5px 8px; border-radius: 6px; margin-top: 1px; }
.type-badge.work { background: var(--accent-soft); color: var(--accent-deep); }
.type-badge.exam { background: var(--purple-soft); color: var(--purple); }
.task-main { flex: 1; min-width: 0; }
.task-title { font-size: 13.5px; font-weight: 550; line-height: 1.5; word-break: break-all; }
.task-sub { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-top: 5px; }
.status-chip { flex: none; font-size: 11.5px; padding: 2.5px 9px; border-radius: 999px; margin-top: 1px; white-space: nowrap; }
.status-chip.todo { background: var(--warn-soft); color: var(--warn); }
.status-chip.done { background: var(--ok-soft); color: var(--ok); }
.empty-tip { font-size: 12.5px; color: var(--text-3); padding: 6px 2px 12px; }

.dl {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 11.5px; padding: 1.5px 9px;
  border-radius: 6px; border: 1px solid var(--line);
  background: var(--bg); color: var(--text-2);
  white-space: nowrap; font-variant-numeric: tabular-nums;
}
.dl.past, .dl.urgent { background: var(--err-soft); color: var(--err); border-color: transparent; font-weight: 600; }
.dl.soon { background: var(--warn-soft); color: var(--warn); border-color: transparent; font-weight: 600; }
.dl.none { opacity: .75; }

.result-actions { display: flex; gap: 10px; margin-top: 16px; flex-wrap: wrap; }
.result-actions button { flex: 1; min-width: 130px; }

/* ---- 个人中心页 ---- */
.me-row { display: flex; align-items: center; gap: 14px; }
.avatar {
  width: 52px; height: 52px; border-radius: 50%; flex: none;
  background: linear-gradient(135deg, #6486f7, var(--accent-deep)); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; font-weight: 700;
  box-shadow: 0 3px 10px rgba(61, 99, 242, 0.25);
}
.me-info { flex: 1; min-width: 0; }
.me-name { font-size: 16px; font-weight: 650; word-break: break-all; }
.me-sub { margin-top: 4px; font-size: 12.5px; color: var(--text-2); word-break: break-all; }
.me-guest { color: var(--text-2); font-size: 13.5px; line-height: 1.85; }

.cookie-list {
  border: 1px solid var(--line); border-radius: 10px;
  max-height: 240px; overflow: auto;
  font-family: var(--mono); font-size: 12px;
}
.ck-row { display: flex; gap: 10px; padding: 8px 12px; border-bottom: 1px solid var(--line); align-items: baseline; }
.ck-row:last-child { border-bottom: none; }
.ck-row.key { background: var(--accent-soft); }
.ck-name { flex: none; width: 118px; color: var(--accent-deep); font-weight: 600; word-break: break-all; }
.ck-val { flex: 1; color: var(--text-2); word-break: break-all; line-height: 1.5; }
.meta { font-size: 12.5px; color: var(--text-2); margin-bottom: 14px; line-height: 1.8; }
.meta b { color: var(--text); font-weight: 600; }

.form { display: flex; flex-direction: column; gap: 14px; margin-top: 4px; }
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field > span { font-size: 12.5px; font-weight: 600; color: var(--text-2); }
.form-field input[type="text"], .form-field input[type="password"] {
  padding: 9px 12px;
  border: 1px solid var(--line); border-radius: var(--radius-s);
  background: var(--card); color: var(--text);
  font: inherit; font-size: 13.5px; outline: none;
  transition: border-color .16s, box-shadow .16s;
}
.form-field input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-ring); }
.key-row { display: flex; gap: 8px; }
.key-row input { flex: 1; min-width: 0; }
.key-row button { flex: none; padding: 8px 14px; }
.form-note { font-size: 12px; color: var(--text-3); line-height: 1.7; }
.ai-status { font-size: 12.5px; line-height: 1.7; min-height: 18px; display: none; padding: 8px 12px; border-radius: 8px; }
.ai-status.show { display: block; }
.ai-status.ok { background: var(--ok-soft); color: var(--ok); }
.ai-status.err { background: var(--err-soft); color: var(--err); }
.ai-status.wait { background: var(--accent-soft); color: var(--accent-deep); }

.about-text { font-size: 12.5px; color: var(--text-2); line-height: 1.9; }

/* ---- AI 答题按钮 ---- */
.task-right { display: flex; flex-direction: column; align-items: flex-end; gap: 6px; flex: none; }
.ai-btn {
  font-size: 11.5px; padding: 3.5px 11px; border-radius: 8px;
  background: var(--purple-soft); color: var(--purple);
  border: 1px solid transparent; cursor: pointer; font-weight: 600; touch-action: manipulation;
  transition: border-color .15s, transform .1s;
}
.ai-btn:hover { border-color: var(--purple); }
.ai-btn:active { transform: translateY(1px); }
.ai-btn.resubmit { background: var(--warn-soft); color: var(--warn); }
.ai-btn.resubmit:hover { border-color: var(--warn); }

/* ---- 可补交徽章 ---- */
.resubmit-badge {
  font-size: 11px; padding: 2px 8px; border-radius: 999px;
  background: var(--warn-soft); color: var(--warn); font-weight: 600;
  border: 1px solid #ecd9b0;
}
.no-solve-tip {
  font-size: 10.5px; color: var(--text-3); white-space: nowrap;
  padding: 3px 6px; border-radius: 6px; background: var(--bg);
  border: 1px solid var(--line);
}

/* ---- 学期分组（课程选择页） ---- */
.course-term-group { margin-bottom: 16px; }
.course-term-head {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; color: var(--text);
  padding: 6px 2px 10px; border-bottom: 1px solid var(--line); margin-bottom: 8px;
  cursor: pointer; user-select: none; touch-action: manipulation;
}
.course-term-count { font-size: 11.5px; font-weight: 500; color: var(--text-3); margin-left: auto; font-variant-numeric: tabular-nums; }
.course-term-chevron { font-size: 11px; color: var(--text-3); transition: transform 0.15s; }
.course-term-group.collapsed .course-term-chevron { transform: rotate(-90deg); }
.course-term-group.collapsed .course-item { display: none; }
.course-term-group.collapsed .course-term-head { border-bottom-color: transparent; margin-bottom: 0; }
.course-term-group.collapsed .course-term-count { color: var(--text-3); }

.resubmit-badge.redo { color: var(--ok); background: var(--ok-soft); border-color: #bfe5d5; }

/* ---- 学期级全选 ---- */
.term-select-all {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12px; font-weight: 500; color: var(--text-2);
  padding: 2px 8px; border-radius: 8px; cursor: pointer;
  transition: background .15s, color .15s; user-select: none; touch-action: manipulation;
}
.term-select-all:hover { background: var(--accent-soft); color: var(--accent-deep); }

/* ---- todo 页：批量操作栏 ---- */
.todo-batch-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 12px 16px; margin-top: 16px;
  background: var(--accent-soft); border: 1px solid #dbe3fc; border-radius: var(--radius);
}
.batch-check { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; font-weight: 600; color: var(--accent-deep); cursor: pointer; user-select: none; }
.batch-right { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.batch-mode { display: flex; align-items: center; gap: 4px; background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 3px; }
.batch-mode label {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12.5px; color: var(--text-2);
  padding: 5px 11px; border-radius: 8px; cursor: pointer; transition: background .15s, color .15s;
  user-select: none;
}
.batch-mode label:hover { color: var(--accent-deep); }
.batch-mode label:has(input:checked) { background: var(--accent-soft); color: var(--accent-deep); font-weight: 600; }
.batch-mode input { margin: 0; }

.batch-progress {
  margin-top: 14px; padding: 14px 16px;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-1);
}
.batch-progress-head { display: flex; align-items: center; gap: 14px; margin-bottom: 10px; }
#batchProgressText { font-size: 13px; font-weight: 600; color: var(--text); white-space: nowrap; font-variant-numeric: tabular-nums; }
.batch-bar { flex: 1; height: 6px; background: var(--line); border-radius: 4px; overflow: hidden; }
.batch-bar-fill { height: 100%; background: var(--accent); border-radius: 4px; transition: width .4s var(--ease); }
.batch-row {
  display: flex; align-items: center; gap: 10px;
  padding: 7px 6px; border-bottom: 1px solid var(--line);
  font-size: 12.5px;
}
.batch-row:last-child { border-bottom: none; }
.batch-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--line-strong); flex: none; transition: background .2s; }
.batch-dot.run { background: var(--accent); animation: batchPulse 1.1s ease infinite; }
.batch-dot.ok { background: var(--ok); }
.batch-dot.err { background: var(--err); }
@keyframes batchPulse { 0%, 100% { opacity: 1; } 50% { opacity: .35; } }
.batch-row-title { flex: 1; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.batch-row-status { color: var(--text-2); white-space: nowrap; max-width: 46%; overflow: hidden; text-overflow: ellipsis; font-variant-numeric: tabular-nums; }
.batch-row.ok .batch-row-status { color: var(--ok); font-weight: 600; }
.batch-row.err .batch-row-status { color: var(--err); }
.batch-row.running .batch-row-title { font-weight: 600; }

/* todo 页多选行 */
.todo-row { display: flex; align-items: flex-start; gap: 9px; }
.todo-row > .todo-cb { margin-top: 12px; flex: none; }

/* ---- 学期分组（未完成作业页） ---- */
.term-group { margin-bottom: 22px; }
.term-head {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px; border-radius: 11px;
  background: #fafbfd; border: 1px solid var(--line);
  margin-bottom: 12px;
}
.term-name { font-size: 14.5px; font-weight: 700; color: var(--text); }
.term-count { font-size: 12px; color: var(--text-3); margin-left: auto; font-variant-numeric: tabular-nums; }
.term-body { padding-left: 2px; }

/* ---- 弹窗 ---- */
.modal-mask {
  position: fixed; inset: 0; z-index: 90;
  background: rgba(15, 20, 30, 0.38);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  display: flex; align-items: center; justify-content: center;
  padding: 22px;
  overscroll-behavior: contain;
}
.modal-mask[hidden] { display: none !important; }
.modal {
  width: 100%; max-width: 680px; max-height: 84vh;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius-l); display: flex; flex-direction: column;
  overflow: hidden; box-shadow: var(--shadow-pop);
  animation: fadeUp .22s var(--ease);
}
.modal-head {
  display: flex; align-items: center; gap: 10px;
  padding: 15px 20px; border-bottom: 1px solid var(--line);
}
.modal-title { font-size: 15px; font-weight: 650; flex: 1; min-width: 0; word-break: break-all; }
.modal-close { border: none; background: transparent; font-size: 15px; color: var(--text-3); cursor: pointer; padding: 2px 8px; border-radius: 7px; }
.modal-close:hover { color: var(--err); background: var(--err-soft); }
.modal-body { padding: 16px 20px; overflow: auto; }
.solver-opts { display: flex; flex-direction: column; gap: 10px; margin-bottom: 14px; }
.form-check { display: flex; align-items: flex-start; gap: 8px; font-size: 13px; color: var(--text-2); cursor: pointer; line-height: 1.6; }
.form-check input { width: 15px; height: 15px; accent-color: var(--accent); margin-top: 2px; flex: none; }
.solver-warn {
  font-size: 12.5px; padding: 8px 12px; border-radius: 8px;
  background: var(--warn-soft); color: var(--warn); line-height: 1.65;
}
.solver-tip { font-size: 12px; color: var(--text-3); line-height: 1.65; padding: 0 2px; }
.solver-progress { display: flex; align-items: center; gap: 9px; font-size: 13px; color: var(--text-2); margin-bottom: 10px; }
.solver-progress .spinner { width: 16px; height: 16px; border-width: 2px; }
.solver-log {
  font-family: var(--mono); font-size: 11.5px; line-height: 1.75;
  background: var(--bg); border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 12px; max-height: 200px; overflow: auto; white-space: pre-wrap;
  word-break: break-all;
}
.log-line { display: block; }
.log-line.warn { color: var(--warn); }
.log-line.error { color: var(--err); }
.log-line.ok { color: var(--ok); }
.solver-result { margin-top: 14px; }
.submit-banner { padding: 10px 14px; border-radius: 10px; font-size: 13px; font-weight: 600; margin-bottom: 12px; line-height: 1.65; }
.submit-banner.ok { background: var(--ok-soft); color: var(--ok); }
.submit-banner.warn { background: var(--warn-soft); color: var(--warn); }
.submit-banner.err { background: var(--err-soft); color: var(--err); }
.submit-banner.info { background: var(--accent-soft); color: var(--accent-deep); }
.sq-item { border: 1px solid var(--line); border-radius: 10px; padding: 10px 13px; margin-bottom: 8px; }
.sq-head { display: flex; align-items: center; gap: 8px; margin-bottom: 5px; }
.sq-stem { font-size: 12.5px; color: var(--text-2); line-height: 1.6; word-break: break-all; }
.sq-answer { font-size: 12.5px; margin-top: 5px; line-height: 1.6; word-break: break-all; }
.sq-answer b { color: var(--accent-deep); }
.sq-reason { font-size: 11.5px; color: var(--text-3); margin-top: 4px; line-height: 1.6; word-break: break-all; }
.sq-status { font-size: 11px; padding: 1.5px 8px; border-radius: 999px; flex: none; }
.sq-status.applied { background: var(--ok-soft); color: var(--ok); }
.sq-status.failed { background: var(--err-soft); color: var(--err); }
.sq-status.partial { background: var(--warn-soft); color: var(--warn); }
.sq-status.skipped { background: var(--bg); color: var(--text-3); }

/* ---- Toast ---- */
.toast {
  position: fixed; left: 50%; bottom: 34px; transform: translateX(-50%) translateY(20px);
  background: #1f242e; color: #fff; font-size: 13px; padding: 9px 20px; border-radius: 10px;
  opacity: 0; pointer-events: none; transition: opacity 0.25s, transform 0.25s;
  max-width: 80vw; text-align: center; z-index: 99;
  box-shadow: 0 8px 28px rgba(15, 20, 30, 0.2);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---- 动效偏好：尊重系统减少动态 ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}