/* ============ 设计变量 ============ */
:root {
  --bg: #f2f5fb;
  --bg-2: #e9eef8;
  --card: #ffffff;
  --text: #1b2435;
  --text-2: #4b5768;
  --muted: #8b97a8;
  --border: #e3e8f2;
  --border-strong: #d2dae8;

  --primary: #2f6df6;
  --primary-dark: #1d4fd0;
  --primary-soft: #e9f0ff;
  --success: #12a150;
  --success-soft: #e6f7ec;
  --warn: #d98207;
  --warn-soft: #fff4e3;
  --danger: #dc3545;
  --danger-soft: #fdecee;
  --purple: #7c5cf0;
  --purple-soft: #f0ebff;

  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 1px 3px rgba(23, 42, 84, .06), 0 8px 24px rgba(23, 42, 84, .05);
  --shadow-sm: 0 1px 2px rgba(23, 42, 84, .07);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
body { min-height: 100vh; }

a { color: var(--primary); text-decoration: none; }
h1, h2, h3, h4 { margin: 0; font-weight: 700; letter-spacing: -.01em; }
em { font-style: normal; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }

/* ============ 顶栏 ============ */
.topbar {
  display: none;
  align-items: center; gap: 24px;
  padding: 0 24px;
  height: 62px;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.brand { display: flex; align-items: center; gap: 9px; color: var(--text); font-weight: 800; font-size: 17px; }
.brand-mark { font-size: 21px; }
.brand-text em { color: var(--primary); }
.topnav { display: flex; gap: 4px; margin-left: 8px; flex: 1; }
.topnav a {
  padding: 8px 15px; border-radius: 9px; color: var(--text-2);
  font-weight: 600; font-size: 14.5px; transition: .15s;
}
.topnav a:hover { background: var(--bg-2); color: var(--text); }
.topnav a.active { background: var(--primary-soft); color: var(--primary-dark); }
.userbox { display: flex; align-items: center; gap: 12px; font-size: 14px; }
.userbox .who { color: var(--text-2); font-weight: 600; }
.userbox .logout { color: var(--muted); }
.userbox .logout:hover { color: var(--danger); }

/* ============ 底部导航（移动端） ============ */
.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
  display: flex;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: saturate(180%) blur(14px);
  border-top: 1px solid var(--border);
  padding-bottom: var(--safe-bottom);
}
.tabbar a {
  flex: 1; display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 9px 0 8px; color: var(--muted); font-size: 11px; font-weight: 600;
}
.tabbar a .ic { font-size: 19px; line-height: 1; }
.tabbar a.active { color: var(--primary); }

/* ============ 页面容器 ============ */
.page {
  padding: 14px 14px calc(84px + var(--safe-bottom));
  max-width: 1180px; margin: 0 auto;
}

/* ============ 卡片 ============ */
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow-sm);
  padding: 16px; margin-bottom: 14px;
}
.card-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px; margin-bottom: 13px;
}
.card-head h2 { font-size: 16px; display: flex; align-items: center; gap: 8px; }
.card-title-sub { font-size: 13px; color: var(--muted); font-weight: 500; }
.section-hint { font-size: 12.5px; color: var(--muted); margin: -6px 0 12px; }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 18px; border-radius: 10px; border: 1px solid var(--border-strong);
  background: #fff; color: var(--text); font-weight: 650; font-size: 14.5px;
  cursor: pointer; transition: .15s; white-space: nowrap;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; }
.btn-success { background: var(--success); border-color: var(--success); color: #fff; }
.btn-success:hover { background: #0d8a43; border-color: #0d8a43; color: #fff; }
.btn-ghost { background: transparent; border-color: transparent; color: var(--text-2); }
.btn-ghost:hover { background: var(--bg-2); }
.btn-danger { color: var(--danger); border-color: #f3c3c8; background: #fff; }
.btn-danger:hover { background: var(--danger-soft); border-color: var(--danger); color: var(--danger); }
.btn-sm { padding: 6px 12px; font-size: 13px; border-radius: 8px; }
.btn-block { width: 100%; }
.btn-lg { padding: 14px 22px; font-size: 16px; border-radius: 12px; }

/* ============ 徽标 / 标签 ============ */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 9px; border-radius: 20px; font-size: 12px; font-weight: 700;
  background: var(--bg-2); color: var(--text-2);
}
.badge-ok { background: var(--success-soft); color: var(--success); }
.badge-warn { background: var(--warn-soft); color: var(--warn); }
.badge-danger { background: var(--danger-soft); color: var(--danger); }
.badge-primary { background: var(--primary-soft); color: var(--primary-dark); }
.badge-purple { background: var(--purple-soft); color: var(--purple); }

/* ============ 进度条 ============ */
.bar { height: 10px; border-radius: 99px; background: var(--bg-2); overflow: hidden; }
.bar > i {
  display: block; height: 100%; border-radius: 99px;
  background: linear-gradient(90deg, #4d86ff, #2f6df6);
  transition: width .6s cubic-bezier(.22,1,.36,1);
}
.bar.warn > i { background: linear-gradient(90deg, #f7b955, #ec9512); }
.bar.low > i { background: linear-gradient(90deg, #f4727f, #dc3545); }
.bar.thin { height: 6px; }

/* ============ 科目上传网格 ============ */
.subject-grid {
  display: grid; gap: 10px;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
}
.subject {
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  padding: 12px; background: #fcfdff; transition: .18s; position: relative;
}
.subject.done { border-color: #b9e3c9; background: var(--success-soft); }
.subject.grading { border-color: #bdd2fb; background: var(--primary-soft); }
.subject.failed { border-color: #f5c2c7; background: var(--danger-soft); }
.subject-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.subject-name { font-weight: 700; font-size: 15px; }
.subject-score { font-weight: 800; font-size: 17px; color: var(--success); }
.subject-score small { font-size: 11px; color: var(--muted); font-weight: 600; }
.subject-score.zero { color: var(--danger); }
.subject-score.mid { color: var(--warn); }
.subject-meta { font-size: 12px; color: var(--muted); margin-top: 5px; min-height: 18px; }
.subject-actions { display: flex; gap: 5px; margin-top: 9px; flex-wrap: nowrap; }
/* 科目卡片较窄（手机 2 列）：主按钮占满，清空收成图标按钮，保证一行放下 */
.subject-actions .btn { padding: 8px 10px; font-size: 13px; }
.subject-actions .js-pick { flex: 1 1 auto; min-width: 0; }
.subject-actions .js-clear { flex: 0 0 auto; }
.thumbs { display: flex; gap: 5px; margin-top: 9px; flex-wrap: wrap; }
.thumbs img {
  width: 42px; height: 42px; object-fit: cover; border-radius: 7px;
  border: 1px solid var(--border-strong); cursor: pointer; background: #fff;
}
.subject-reason {
  font-size: 12px; color: var(--text-2); background: #fff;
  border: 1px dashed var(--border-strong); border-radius: 8px;
  padding: 7px 9px; margin-top: 8px; line-height: 1.5;
}
.subject-reason b { color: var(--text); }
.ai-flag { font-size: 11px; color: var(--warn); font-weight: 700; }

/* ============ 学习习惯 ============ */
.habit-list { display: grid; gap: 8px; }
.habit {
  display: flex; align-items: center; gap: 11px;
  padding: 11px 13px; border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); background: #fcfdff; cursor: pointer;
  transition: .15s; user-select: none;
}
.habit:hover { border-color: var(--primary); }
.habit.on { border-color: var(--success); background: var(--success-soft); }
.habit .tick {
  width: 22px; height: 22px; flex: 0 0 22px; border-radius: 7px;
  border: 2px solid var(--border-strong); background: #fff;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 14px; font-weight: 800; transition: .15s;
}
.habit.on .tick { background: var(--success); border-color: var(--success); }
.habit .txt { flex: 1; font-weight: 600; font-size: 14.5px; }
.habit input { display: none; }

/* ============ 统计块 ============ */
.stat-row { display: grid; gap: 10px; grid-template-columns: repeat(2, 1fr); }
.stat {
  background: #fcfdff; border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px 13px;
}
.stat .k { font-size: 12px; color: var(--muted); font-weight: 600; }
.stat .v { font-size: 22px; font-weight: 800; margin-top: 2px; letter-spacing: -.02em; }
.stat .v small { font-size: 12px; color: var(--muted); font-weight: 600; }
.stat.hero { background: linear-gradient(135deg, #eef4ff, #f7faff); border-color: #cfe0ff; }
.stat.hero .v { color: var(--primary-dark); }

/* ============ 今日合计条 ============ */
.total-bar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px; padding: 14px 16px; border-radius: var(--radius);
  background: linear-gradient(135deg, #2f6df6, #5b8bff); color: #fff;
  box-shadow: 0 6px 20px rgba(47, 109, 246, .25); margin-bottom: 14px;
}
.total-bar .t-label { font-size: 12.5px; opacity: .9; font-weight: 600; }
.total-bar .t-score { font-size: 27px; font-weight: 800; line-height: 1.1; }
.total-bar .t-score small { font-size: 14px; opacity: .85; font-weight: 600; }
.total-bar .t-split { text-align: right; font-size: 12px; opacity: .95; line-height: 1.7; }
.total-bar .t-split b { font-size: 14px; }

/* ============ 日期切换 ============ */
.date-nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 8px; margin-bottom: 14px;
}
.date-nav .dn-btn {
  width: 40px; height: 40px; border-radius: 11px; border: 1px solid var(--border-strong);
  background: #fff; display: flex; align-items: center; justify-content: center;
  cursor: pointer; font-size: 17px; color: var(--text-2); flex: 0 0 40px;
}
.date-nav .dn-btn:hover { border-color: var(--primary); color: var(--primary); }
.date-nav .dn-center { flex: 1; text-align: center; }
.date-nav .dn-date { font-weight: 800; font-size: 17px; }
.date-nav .dn-sub { font-size: 12px; color: var(--muted); }

/* ============ 表格 ============ */
.table-wrap { overflow-x: auto; border-radius: var(--radius-sm); border: 1px solid var(--border); }
table.tbl { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 720px; }
table.tbl th, table.tbl td { padding: 7px 9px; text-align: center; border-bottom: 1px solid var(--border); }
table.tbl th {
  background: var(--bg-2); font-weight: 700; color: var(--text-2);
  position: sticky; top: 0; white-space: nowrap; font-size: 12px;
}
table.tbl tbody tr:hover { background: var(--primary-soft); }
table.tbl td.date-cell { font-weight: 700; white-space: nowrap; }
table.tbl .sub-total { background: #f8fafd; font-weight: 700; }
table.tbl tfoot td { background: var(--bg-2); font-weight: 800; border-top: 2px solid var(--border-strong); }
.sc { font-weight: 700; border-radius: 5px; }
.sc-0 { color: var(--danger); background: var(--danger-soft); }
.sc-1 { color: var(--warn); background: var(--warn-soft); }
.sc-2 { color: var(--text-2); background: var(--bg-2); }
.sc-3 { color: var(--success); background: var(--success-soft); }
.sc-empty { color: #c4ccd9; }
.day-total.low { color: var(--danger); }
.day-total.mid { color: var(--warn); }
.day-total.high { color: var(--success); }

/* ============ 列表项 ============ */
.list-item {
  display: flex; align-items: center; gap: 12px; padding: 13px 14px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: #fff; margin-bottom: 9px; transition: .15s;
}
.list-item:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); }
.list-item .li-main { flex: 1; min-width: 0; }
.list-item .li-title { font-weight: 700; font-size: 15px; }
.list-item .li-sub { font-size: 12.5px; color: var(--muted); margin-top: 2px; }
.list-item .li-right { text-align: right; flex: 0 0 auto; }
.empty {
  text-align: center; padding: 40px 16px; color: var(--muted); font-size: 14px;
}
.empty .big { font-size: 34px; display: block; margin-bottom: 8px; }

/* ============ 评分标准说明 ============ */
.rubric { display: grid; gap: 6px; }
.rubric-row {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 9px 11px; border-radius: 9px; background: #fafbfe; font-size: 13px;
}
.rubric-row .rs {
  flex: 0 0 34px; text-align: center; font-weight: 800; border-radius: 7px;
  padding: 2px 0; font-size: 14px;
}

/* ============ 复核页 ============ */
.review-block {
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 13px; margin-bottom: 10px; background: #fff;
}
.review-block.needs-check { border-color: #f3d9a8; background: #fffdf7; }
.review-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.review-name { font-weight: 700; font-size: 15px; }
.score-picker { display: flex; gap: 6px; margin-top: 10px; flex-wrap: wrap; }
.score-picker .sp {
  width: 46px; height: 42px; border-radius: 10px; border: 1.5px solid var(--border-strong);
  background: #fff; font-weight: 800; font-size: 16px; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  line-height: 1.05; color: var(--text-2); transition: .13s;
}
.score-picker .sp small { font-size: 9px; font-weight: 600; color: var(--muted); }
.score-picker .sp:hover { border-color: var(--primary); }
.score-picker .sp.on { background: var(--primary); border-color: var(--primary); color: #fff; }
.score-picker .sp.on small { color: rgba(255,255,255,.8); }
.criteria { margin-top: 10px; display: grid; gap: 5px; }
.crit {
  display: flex; align-items: flex-start; gap: 8px; font-size: 12.5px;
  padding: 6px 9px; border-radius: 8px; background: #fafbfe; color: var(--text-2);
}
.crit .ci { flex: 0 0 auto; font-weight: 700; }
.crit.ok .ci { color: var(--success); }
.crit.no .ci { color: var(--danger); }
.crit.na .ci { color: var(--muted); }
.crit.na { background: #f6f7fa; font-style: italic; }

/* ============ 家长模式操作条（孩子视角页） ============ */
.parent-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 11px 14px; margin-bottom: 14px;
  background: #fff8e8; border: 1.5px solid #f0d79a; border-radius: var(--radius-sm);
}
.parent-bar .pb-left { min-width: 0; }
.parent-bar .pb-title { font-weight: 800; font-size: 13.5px; color: #8a5a00; }
.parent-bar .pb-sub { font-size: 12px; color: #a07830; margin-top: 2px; line-height: 1.4; }
.parent-bar .btn { flex: 0 0 auto; }

/* 科目卡片上的紧凑改分按钮（家长模式） */
.mini-picker {
  display: flex; align-items: center; gap: 5px; margin-top: 9px;
  padding-top: 9px; border-top: 1px dashed var(--border-strong);
}
.mini-picker .mp-label { font-size: 11.5px; color: var(--muted); font-weight: 600; flex: 0 0 auto; }
.mini-picker .mp {
  flex: 1 1 auto; min-width: 30px; height: 32px; padding: 0;
  border-radius: 8px; border: 1.5px solid var(--border-strong); background: #fff;
  font-weight: 800; font-size: 14px; color: var(--text-2);
  cursor: pointer; transition: .13s;
}
.mini-picker .mp:hover { border-color: var(--primary); }
.mini-picker .mp.on { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ============ 里程碑 ============ */
.milestones { display: grid; gap: 8px; margin-top: 12px; }
.milestone {
  display: flex; align-items: center; gap: 10px; padding: 10px 12px;
  border-radius: 10px; border: 1px dashed var(--border-strong); background: #fafbfe;
  font-size: 13px; color: var(--text-2);
}
.milestone.hit { border-style: solid; border-color: var(--success); background: var(--success-soft); color: var(--success); font-weight: 700; }
.milestone .pct { margin-left: auto; font-weight: 800; }

/* ============ 提示条 ============ */
.alert {
  border-radius: var(--radius-sm); padding: 11px 13px; font-size: 13px;
  border: 1px solid; margin-bottom: 12px; line-height: 1.6;
}
.alert-info { background: var(--primary-soft); border-color: #cfe0ff; color: var(--primary-dark); }
.alert-warn { background: var(--warn-soft); border-color: #f3d9a8; color: #8a5a06; }
.alert-danger { background: var(--danger-soft); border-color: #f5c2c7; color: #a32330; }
.alert-ok { background: var(--success-soft); border-color: #b9e3c9; color: #0b7a3b; }

/* ============ flash ============ */
.flash-wrap { max-width: 1180px; margin: 12px auto 0; padding: 0 14px; }
.flash { padding: 11px 14px; border-radius: var(--radius-sm); font-size: 14px; font-weight: 600; }
.flash-ok { background: var(--success-soft); color: #0b7a3b; }
.flash-error { background: var(--danger-soft); color: #a32330; }

/* ============ 登录页 ============ */
.login-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  padding: 20px; background: linear-gradient(150deg, #eaf1ff 0%, #f4f7fd 45%, #fdf6ec 100%);
}
.login-card {
  width: 100%; max-width: 400px; background: #fff; border-radius: 20px;
  box-shadow: 0 12px 44px rgba(23, 42, 84, .12); padding: 32px 26px;
}
.login-logo { font-size: 42px; text-align: center; }
.login-card h1 { text-align: center; font-size: 21px; margin: 6px 0 4px; }
.login-card .sub { text-align: center; color: var(--muted); font-size: 13px; margin-bottom: 24px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; font-weight: 700; color: var(--text-2); margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; border: 1.5px solid var(--border-strong);
  border-radius: 11px; background: #fcfdff; outline: none; transition: .15s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px rgba(47,109,246,.12);
}
.login-hint {
  margin-top: 20px; padding: 12px; border-radius: 11px; background: var(--bg-2);
  font-size: 12.5px; color: var(--text-2); line-height: 1.8;
}
.login-hint b { color: var(--text); }

/* ============ 图片查看器 ============ */
.lightbox {
  position: fixed; inset: 0; z-index: 200; background: rgba(12,18,30,.9);
  display: none; align-items: center; justify-content: center; padding: 16px;
}
.lightbox.open { display: flex; }
.lightbox img { max-width: 100%; max-height: 90vh; border-radius: 10px; }

/* ============ 加载态 ============ */
.spinner {
  width: 15px; height: 15px; border-radius: 50%; display: inline-block;
  border: 2px solid rgba(47,109,246,.25); border-top-color: var(--primary);
  animation: spin .7s linear infinite; vertical-align: -2px;
}
@keyframes spin { to { transform: rotate(360deg); } }
.skeleton {
  background: linear-gradient(90deg, #eef1f7 25%, #f7f9fc 50%, #eef1f7 75%);
  background-size: 200% 100%; animation: sk 1.4s infinite;
  border-radius: 7px; height: 14px;
}
@keyframes sk { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ============ 网格布局（PC） ============ */
.grid-2 { display: grid; gap: 14px; }
.hide-mobile { display: none; }

/* ============ 表格：小屏精简 ============ */
.scroll-hint { font-size: 12px; color: var(--muted); text-align: center; margin-top: 8px; }
@media (max-width: 899px) {
  table.tbl { font-size: 12.5px; }
  table.tbl th, table.tbl td { padding: 6px 6px; }
  /* 精简表：隐藏次要列，让小屏也能看到「达标情况」 */
  table.tbl.min-mobile { min-width: 0; }
  table.tbl.min-mobile .opt { display: none; }
}

/* ============ 响应式 ============ */
@media (min-width: 900px) {
  .topbar { display: flex; }
  .tabbar { display: none; }
  .page { padding: 22px 24px 40px; }
  .stat-row { grid-template-columns: repeat(4, 1fr); }
  .grid-2 { grid-template-columns: 1.35fr 1fr; align-items: start; }
  .hide-mobile { display: block; }
  .show-mobile { display: none; }
  .subject-grid { grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); }
  .login-wrap { padding: 40px; }
  .card { padding: 20px; }
}

@media (max-width: 380px) {
  .subject-grid { grid-template-columns: repeat(2, 1fr); }
  .subject { padding: 10px; }
  .subject-name { font-size: 14px; }
}

/* 家长端强调色 */
body.role-parent .total-bar { background: linear-gradient(135deg, #7c5cf0, #9a80f5); box-shadow: 0 6px 20px rgba(124,92,240,.25); }