/* Focused teacher workflows. All workspace styles are scoped to tw-* surfaces. */
.tw-rules-explanation{font-size:13px;line-height:1.8;color:var(--ink)}.tw-rules-intro h3{font-size:18px;line-height:1.5;margin-bottom:7px}.tw-rules-intro p{color:var(--muted)}.tw-rules-intro strong{color:var(--ink);font-weight:600}.tw-rules-formula{display:grid;gap:5px;margin:18px 0;padding:13px 16px;border:1px solid var(--line);border-radius:8px;background:var(--primary-soft)}.tw-rules-formula>span{color:var(--primary);font-size:12px}.tw-rules-formula strong{font-size:17px;font-weight:600;line-height:1.6}.tw-rules-section+.tw-rules-section{margin-top:20px;padding-top:17px;border-top:1px solid var(--line)}.tw-rules-section h3{font-size:14px;margin-bottom:8px}.tw-rules-section>p+p{margin-top:7px}.tw-rules-table{white-space:normal;font-size:13px;line-height:1.8}.tw-rules-table th{font-size:12px;padding:9px 12px}.tw-rules-table td{padding:10px 12px;white-space:normal;vertical-align:top}.tw-rules-table td:first-child{width:29%;font-weight:550}.tw-rules-table td strong{font-weight:600}.tw-rules-seats{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));margin:13px 0;border:1px solid var(--line);border-radius:7px;overflow:hidden}.tw-rules-seats>div{display:grid;gap:4px;padding:10px 7px;text-align:center;background:var(--surface)}.tw-rules-seats>div+div{border-left:1px solid var(--line)}.tw-rules-seats span{font-size:12px;color:var(--muted)}.tw-rules-seats b{font-size:18px;color:var(--primary);font-weight:600;line-height:1.5}.tw-rules-seats small{font-size:10px;color:var(--muted);white-space:nowrap}.tw-rules-muted{font-size:12px;color:var(--muted)}.tw-rules-foot{margin-top:19px;padding:12px 14px;border:1px solid var(--line);border-radius:7px;background:var(--surface)}.tw-rules-foot>strong{font-size:13px}.tw-rules-foot>p{font-size:12px;color:var(--muted);margin-top:4px}@media(max-width:580px){.tw-rules-intro h3{font-size:17px}.tw-rules-formula strong{font-size:15px}.tw-rules-table th,.tw-rules-table td{padding:9px 7px}.tw-rules-table td:first-child{width:31%}.tw-rules-seats{grid-template-columns:repeat(3,minmax(0,1fr))}.tw-rules-seats>div:nth-child(4){border-left:0}.tw-rules-seats>div:nth-child(n+4){border-top:1px solid var(--line)}.tw-rules-seats small{font-size:11px}}
.tw-page-note { padding: 14px 18px; color: var(--muted); font-size: 12px; line-height: 1.8; }
.tw-empty { display: grid; gap: 6px; padding: 32px 20px; color: var(--muted); font-size: 13px; text-align: center; }
.tw-empty strong { font-size: 14px; color: var(--ink); }
.tw-course-list { display: grid; gap: 16px; }
.tw-course { overflow: hidden; }
.tw-course-head { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; gap: 16px; }
.tw-disclosure { justify-content: flex-start; border: 0; background: transparent; color: var(--ink); padding: 6px 0; text-align: left; min-width: 0; }
.tw-disclosure:hover { background: transparent !important; color: var(--primary); }
.tw-disclosure > .icon { width: 15px; height: 15px; color: var(--muted); flex-shrink: 0; transition: transform .18s ease-out; }
.tw-disclosure[aria-expanded=true] > .icon { transform: rotate(90deg); }
.tw-disclosure strong { font-size: 17px; font-weight: 650; }
.tw-disclosure small { display: block; margin-top: 3px; color: var(--muted); font-size: 12px; font-weight: 400; }
.tw-course-state { font-size: 12px; }
.tw-course-class { border-top: 1px solid var(--line); }
.tw-course-class > header { display: flex; justify-content: space-between; gap: 16px; align-items: center; padding: 10px 20px 10px 40px; background: var(--surface); }
.tw-course-class .tw-disclosure strong { font-size: 14px; }
.tw-course-class .tw-disclosure > span { font-size: 12px; color: var(--muted); font-weight: 400; }
.tw-class-sessions { padding: 0 20px 0 40px; }
.tw-session-row { display: grid; grid-template-columns: 190px minmax(160px,1fr) auto auto; gap: 20px; align-items: center; padding: 16px 0; border-top: 1px solid var(--line); }
.tw-session-row:first-child { border-top: 0; }
.tw-session-row > div { min-width: 0; display: grid; gap: 4px; }
.tw-session-row b,.tw-session-row strong { font-size: 13px; font-weight: 600; }
.tw-session-row span { font-size: 12px; color: var(--muted); }
.tw-session-row .pill { width: max-content; font-size: 11px; }
.tw-session-row .pill.green { color: var(--primary); }
.tw-archive-toggle { width: 100%; border: 0; border-top: 1px solid var(--line); border-radius: 0; background: transparent; justify-content: flex-start; color: var(--muted); min-height: 48px; padding: 12px 0; font-size: 12px; }
.tw-archive-toggle span { margin-left: auto; }
.tw-roster-layout { display: grid; grid-template-columns: 190px minmax(0,1fr); gap: 20px; align-items: start; }
.tw-class-nav { border: 1px solid var(--line); border-radius: 10px; padding: 12px; background: var(--bg); position: sticky; top: 20px; }
.tw-class-nav h2 { font-size: 12px; color: var(--muted); margin: 4px 8px 12px; font-weight: 500; }
.tw-class-nav button { display: flex; width: 100%; justify-content: space-between; text-align: left; border: 0; background: transparent; padding: 10px; color: var(--ink); min-height: 44px; gap: 10px; }
.tw-class-nav button + button { margin-top: 4px; }
.tw-class-nav button span { overflow-wrap: anywhere; }
.tw-class-nav button small { color: var(--muted); font-size: 11px; }
.tw-class-nav button.active { background: var(--primary-soft); color: var(--primary); font-weight: 650; }
.tw-roster-main { overflow: hidden; }
.tw-roster-heading { display: flex; justify-content: space-between; align-items: center; padding: 20px; gap: 20px; border-bottom: 1px solid var(--line); }
.tw-roster-heading h2 { font-size: 17px; }
.tw-roster-heading p { font-size: 12px; color: var(--muted); margin-top: 4px; }
.tw-roster-heading label,.tw-roster-tools label,.tw-requests > header label { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 12px; white-space: nowrap; }
.tw-roster-heading select { width: 180px; }
.tw-roster-tools { display: flex; justify-content: space-between; gap: 16px; padding: 14px 20px; align-items: center; }
.tw-roster-tools .search { min-width: 180px; width: 240px; }
.tw-roster-tools select { width: 130px; }
.tw-roster-table { font-size: 13px; }
.tw-roster-table th,.tw-roster-table td { padding: 13px 12px; }
.tw-roster-table td:first-child,.tw-roster-table th:first-child { padding-left: 20px; }
.tw-roster-table .sub { font-size: 11px; margin-top: 4px; line-height: 1.5; }
.tw-roster-table .pill { margin-top: 6px; font-size: 10px; }
.tw-student-name { background: transparent; border: 0; padding: 0; min-height: 24px; color: var(--ink); font-size: 14px; font-weight: 650; }
.tw-student-name:hover { color: var(--primary); background: transparent !important; text-decoration: underline; text-underline-offset: 4px; }
.tw-weight { font-size: 16px; font-variant-numeric: tabular-nums; font-weight: 650; }
.tw-student-record { display: grid; gap: 20px; }
.tw-record-metrics { display: grid; grid-template-columns: repeat(4,1fr); padding: 16px 0; border-bottom: 1px solid var(--line); gap: 20px; }
.tw-record-metrics div { display: grid; gap: 8px; }
.tw-record-metrics span { font-size: 12px; color: var(--muted); }
.tw-record-metrics strong { font-size: 26px; line-height: 1.2; font-variant-numeric: tabular-nums; }
.tw-record-section { padding-top: 16px; border-top: 1px solid var(--line); min-width: 0; }
.tw-record-section > h3 { font-size: 14px; margin-bottom: 14px; }
.tw-record-section > summary,.tw-formula > summary { cursor: pointer; color: var(--ink); font-size: 13px; font-weight: 600; min-height: 32px; }
.tw-row-counts { display: grid; grid-template-columns: repeat(6,1fr); gap: 10px; margin-bottom: 12px; }
.tw-row-counts > span { display: grid; gap: 8px; padding: 12px 8px; text-align: center; background: var(--surface); border-radius: 7px; }
.tw-row-counts b { font-size: 12px; font-weight: 500; }
.tw-row-counts strong { font-size: 21px; font-weight: 600; }
.tw-row-counts small { font-size: 10px; color: var(--muted); font-weight: 400; }
.tw-formula { background: var(--surface); border-radius: 8px; padding: 14px 16px; }
.tw-formula p { font-size: 12px; color: var(--muted); line-height: 1.85; margin-top: 10px; }
.tw-history-list article { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 16px; padding: 14px 0; border-top: 1px solid var(--line); font-size: 12px; }
.tw-history-list article:first-child { border: 0; }
.tw-history-list article > div { display: grid; gap: 5px; align-content: start; }
.tw-history-list article span,.tw-history-list article small { color: var(--muted); font-size: 11px; }
.tw-history-list article > small { grid-column: 1/-1; }
.tw-proof-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(180px,1fr)); gap: 14px; margin: 14px 0; }
.tw-proof-grid .evidence-preview img { max-height: 240px; object-fit: contain; }
.tw-proof-review { border-top: 1px solid var(--line); padding: 12px 0; font-size: 12px; }
.tw-proof-review .pill { margin-left: 10px; }
.tw-proof-review p { margin-top: 8px; overflow-wrap: anywhere; }
.tw-request-tabs { display: flex; gap: 8px; border-bottom: 1px solid var(--line); margin-bottom: 20px; overflow-x: auto; }
.tw-request-tabs button { border: 0; border-bottom: 2px solid transparent; border-radius: 0; background: transparent; padding: 12px 16px; min-height: 48px; white-space: nowrap; color: var(--muted); }
.tw-request-tabs button span { font-size: 11px; font-weight: 400; }
.tw-request-tabs button.active { border-bottom-color: var(--primary); color: var(--primary); }
.tw-requests { overflow: hidden; }
.tw-requests > header { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 16px 20px; }
.tw-requests h2 { font-size: 15px; }
.tw-requests h2 small { margin-left: 8px; color: var(--muted); font-size: 12px; font-weight: 400; }
.tw-requests select { width: 130px; }
.tw-request-table { table-layout: fixed; white-space: normal; min-width: 1000px; }
.tw-request-table .tw-col-student { width: 120px; }
.tw-request-table .tw-col-type { width: 120px; }
.tw-request-table .tw-col-time { width: 150px; }
.tw-request-table .tw-col-proof { width: 86px; }
.tw-request-table .tw-col-status { width: 85px; }
.tw-request-table .tw-col-actions { width: 140px; }
.tw-request-table th,.tw-request-table td { vertical-align: top; text-align: left; padding: 16px 12px; font-size: 12px; line-height: 1.6; overflow-wrap: anywhere; }
.tw-request-table th { padding-top: 12px; padding-bottom: 12px; }
.tw-request-table strong { font-size: 13px; font-weight: 600; }
.tw-request-table .sub { margin-top: 5px; line-height: 1.6; font-size: 11px; }
.tw-request-table .pill { justify-self: start; width: max-content; }
.tw-reason { font-size: 13px; line-height: 1.65; white-space: pre-wrap; overflow-wrap: anywhere; margin: 0; }
.tw-review-note { margin-top: 10px; padding-top: 8px; border-top: 1px solid var(--line); font-size: 12px; color: var(--muted); white-space: pre-wrap; }
.tw-review-note b { margin-right: 8px; font-size: 11px; }
.tw-request-actions { display: flex; flex-wrap: wrap; gap: 6px; align-items: flex-start; }
.tw-request-actions .quiet { padding-left: 0; padding-right: 0; }
.tw-request-proof { display: block; width: 52px; }
.tw-request-proof img { display: block; width: 52px; height: 64px; object-fit: cover; border: 1px solid var(--line); border-radius: 5px; }
.tw-period-table { border: 1px solid var(--line); border-radius: 9px; overflow: hidden; }
.tw-period-head,.tw-period-row { display: grid; grid-template-columns: 1fr 1fr 1fr; align-items: center; gap: 14px; padding: 9px 14px; }
.tw-period-head { background: var(--surface); font-size: 12px; color: var(--muted); }
.tw-period-row + .tw-period-row { border-top: 1px solid var(--line); }
.tw-period-row label { display: flex; gap: 10px; align-items: center; font-size: 13px; }
.tw-period-row small { color: var(--muted); font-size: 11px; }
.tw-period-row input { min-height: 36px !important; }
#tw-schedule-form .field,#tw-session-form .field { align-content: start; }
#tw-schedule-form > label.rules-check { display: flex; align-items: center; gap: 9px; }
#tw-schedule-form:not(:has(#tw-use-periods:checked)) .tw-period-table { display: none; }
.tw-period-row input { height: 38px; padding-top: 6px; padding-bottom: 6px; }
.tw-period-row { padding-top: 6px; padding-bottom: 6px; }
.shell .session-picker[hidden] { display: none; }
.tw-time-mode { display: flex; align-items: center; flex-wrap: wrap; gap: 20px; background: var(--surface); padding: 12px 14px; border-radius: 7px; }
.tw-time-mode label { display: flex; gap: 8px; align-items: center; font-size: 13px; }
.tw-create-times { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 14px; }
#tw-manual-fields { grid-template-columns: repeat(2,minmax(0,1fr)); }
.tw-create-times[hidden],#tw-signin-time[hidden] { display: none; }
.tw-time-preview { grid-column: 1/-1; }
[data-session-timeline] { display: none !important; }
@media(max-width:1150px){
  .tw-roster-layout { grid-template-columns: 155px minmax(0,1fr); gap: 14px; }
  .tw-session-row { grid-template-columns: 170px minmax(130px,1fr) auto; gap: 12px; }
  .tw-session-row > .pill { display: none; }
}
@media(max-width:760px){
  .tw-course-head { padding: 14px; align-items: flex-start; }
  .tw-course-state { max-width: 130px; text-align: right; }
  .tw-disclosure strong { font-size: 15px; }
  .tw-course-class > header { padding: 10px 14px; flex-wrap: wrap; }
  .tw-course-class .tw-disclosure { flex-wrap: wrap; }
  .tw-course-class .tw-disclosure > span { font-size: 11px; }
  .tw-class-sessions { padding: 0 14px; }
  .tw-session-row { grid-template-columns: 1fr auto; gap: 10px; }
  .tw-session-row .tw-session-title { grid-row: 2; grid-column: 1; }
  .tw-session-row > button { grid-column: 2; grid-row: 1/3; min-height: 44px; }
  .tw-roster-layout { display: block; }
  .tw-class-nav { position: static; display: flex; overflow-x: auto; gap: 6px; margin-bottom: 14px; padding: 8px; }
  .tw-class-nav h2 { display: none; }
  .tw-class-nav button { flex: 0 0 auto; width: auto; white-space: nowrap; }
  .tw-class-nav button + button { margin: 0; }
  .tw-roster-heading { padding: 16px; align-items: flex-start; }
  .tw-roster-heading label { flex-direction: column; align-items: flex-start; gap: 4px; }
  .tw-roster-heading select { width: 130px; }
  .tw-roster-tools { padding: 12px 16px; gap: 10px; flex-wrap: wrap; }
  .tw-roster-tools .search { width: 100%; }
  .tw-record-metrics { grid-template-columns: repeat(2,1fr); }
  .tw-row-counts { grid-template-columns: repeat(3,1fr); }
  .tw-history-list article { grid-template-columns: 1fr 1fr; }
  .tw-history-list article > div:first-child { grid-column: 1/-1; }
  .tw-request-tabs button { padding-left: 10px; padding-right: 10px; min-height: 44px; }
  .tw-request-tabs button span { display: block; margin-top: 3px; }
  .tw-request-table { display: block; min-width: 0; table-layout: auto; }
  .tw-request-table colgroup,.tw-request-table thead { display: none; }
  .tw-request-table tbody { display: block; }
  .tw-request-table tr { display: block; border-top: 1px solid var(--line); padding: 12px 16px; }
  .tw-request-table td { display: grid; grid-template-columns: 76px minmax(0,1fr); column-gap: 12px; border: 0; padding: 7px 0; font-size: 13px; }
  .tw-request-table td:before { content: attr(data-label); color: var(--muted); font-size: 12px; grid-column: 1; grid-row: 1/5; }
  .tw-request-table td > * { grid-column: 2; }
  .tw-request-table td[colspan] { display: block; }
  .tw-request-table .sub { margin-top: 3px; }
  .tw-request-actions button { min-height: 44px; }
  .tw-create-times,#tw-manual-fields { grid-template-columns: 1fr; }
  .tw-period-row,.tw-period-head { gap: 8px; padding-left: 10px; padding-right: 10px; grid-template-columns: 72px 1fr 1fr; }
  .tw-period-row label { display: grid; gap: 0; }
  .tw-period-row input { min-height: 44px !important; height: 44px; }
}
@media(prefers-reduced-motion:reduce){.tw-disclosure > .icon { transition: none; }}

/* 班级名单行操作：查看记录 / 删除 */
.tw-row-actions { display: flex; align-items: center; justify-content: flex-end; gap: 5px; flex-wrap: wrap; }
.tw-roster-table td:last-child { min-width: 126px; }

/* 教师首页附件占用与 5 个月保留提示 */
.tw-storage-summary { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin: 12px 0 16px; padding: 12px 16px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); }
.tw-storage-summary > div { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.tw-storage-summary span { color: var(--muted); font-size: 11px; }
.tw-storage-summary strong { font-size: 18px; line-height: 1.1; color: var(--ink); font-variant-numeric: tabular-nums; }
.tw-storage-summary small { color: var(--muted); font-size: 11px; }
.tw-storage-summary p { grid-column: 1 / -1; margin: 0; padding-top: 8px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; line-height: 1.7; }
.tw-storage-summary p b { color: var(--ink); }
@media(max-width: 760px) { .tw-storage-summary { grid-template-columns: 1fr; } .tw-storage-summary p { grid-column: 1; } }
/* 保留规则默认折叠，不占老师首页的视觉空间 */
.tw-storage-summary .tw-storage-note { grid-column: 1 / -1; padding-top: 8px; border-top: 1px solid var(--line); }
.tw-storage-summary .tw-storage-note summary { width: max-content; max-width: 100%; cursor: pointer; color: var(--muted); font-size: 11px; line-height: 1.7; list-style-position: inside; }
.tw-storage-summary .tw-storage-note summary:hover { color: var(--ink); }
.tw-storage-summary .tw-storage-note p { grid-column: auto; margin: 6px 0 0; padding: 0; border: 0; color: var(--muted); font-size: 11px; line-height: 1.7; }

/* 循环开课：每周两个时段 */
.tw-recurring-slot-title { display: block; margin-bottom: 5px; font-size: 12px; color: var(--ink); }
.tw-recurring-slot { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; padding: 8px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); }
.tw-recurring-slot label { display: grid; gap: 4px; color: var(--muted); font-size: 11px; }
.tw-recurring-slot select { width: 100%; min-width: 0; }
@media(max-width: 640px) { .tw-recurring-slot { grid-template-columns: 1fr; } }

.tw-session-actions { display: flex; align-items: center; justify-content: flex-end; gap: 5px; flex-wrap: wrap; }