/* AISC1000 Figma 版面：只管頁面結構與欄寬；顏色、字體、陰影沿用 tokens.css 的紙張風格。 */
:root {
  --radius-lg: 22px;
  --header-h: 70px;
  --bottom-nav-h: 0px;
}
.app-header__inner { max-width: 1480px; padding: 0 32px; gap: 20px; }
.top-nav__link .i, .top-nav__count { display: none; }
.header-tools { margin-left: auto; }
.lang-switch { flex: none; }
.app-main { max-width: 1480px; padding: 18px 32px 48px; }
.page-head { margin: 4px 0 22px; gap: 12px; align-items: center; }
.page-head .eyebrow { display: none; }
.page-head__lede { margin-top: 6px; max-width: 88ch; }

/* 本週 */
.week { grid-template-columns: minmax(0, 3fr) minmax(260px, 1fr); gap: 24px; }
.week__main { gap: 14px; }
.week__sheet { border-radius: var(--radius-lg); }
.wk-head { padding: 20px 22px 14px; gap: 10px; }
.wk-head__side { width: 100%; grid-template-columns: 1fr auto; gap: 6px; }
.wk-head__side > .seg { display: none; }
.wk-head__side .legend { grid-column: 1; grid-row: 1; font-size: 12px; }
.wk-head__side .wk-tools { grid-column: 2; grid-row: 1; }
.wk-next { padding: 10px 22px; gap: 10px; }
.guide { background: transparent; border: 0; box-shadow: none; padding: 6px 2px; border-radius: 0; }
.mine-bar .guide__acts { margin-top: 6px; }
.figma-guide { margin-top: 4px; font-size: 12.5px; color: var(--ink-3); }
.figma-guide > summary { cursor: pointer; }
.margin { top: calc(var(--header-h) + 14px); max-height: 640px; }

/* 月曆 */
.monthly-page { max-width: 1120px; min-height: 680px; overflow: hidden; }
.monthly-page .month { padding: 24px; }
.month__day { min-height: 110px; }

/* 任務 */
.tasks { grid-template-columns: minmax(220px, 0.32fr) minmax(0, 0.68fr); gap: 24px; }
.tlist { position: static; padding: 18px 14px; min-height: 580px; background: var(--paper); border-radius: var(--radius-lg); box-shadow: var(--shadow-card); }
.trow { border: 0; border-radius: var(--radius-sm); box-shadow: none; padding: 12px 10px; grid-template-columns: minmax(0, 1fr) auto; border-bottom: 1px solid var(--rule-2); }
.trow__bar { display: none; }
.tdetail { padding: 26px; min-height: 480px; }
.td-grid { grid-template-columns: 1fr; }
.td-aside { position: static; }
.task-files { margin: 14px 0 20px; padding: 12px 0; }
.add-task-page { display: grid; grid-template-columns: minmax(0, 3fr) minmax(240px, 1fr); gap: 24px; align-items: start; }
.add-task-page .tform { margin: 0; min-width: 0; padding: 26px; }
.add-task-page .tform__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.add-task-help { padding: 22px; }
.add-task-help h2 { font-size: 19px; }
.add-task-help p { font-size: 13.5px; color: var(--ink-2); }
.task-empty { display: grid; align-content: center; justify-items: center; gap: 20px; text-align: center; }
.task-empty h2 { font-size: 22px; }

/* 課程資料 */
.imp { max-width: 1160px; }
.imp__top { grid-template-columns: 1fr 1fr; gap: 20px; }
.drop { min-height: 240px; padding: 24px; }
.imp-how { padding: 22px; }
.how-list { gap: 10px; margin-top: 16px; }
.docs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin: 20px 0; }
.doc { display: block; padding: 12px 14px; border-radius: var(--radius); border: 1px solid var(--rule); background: var(--paper-3); box-shadow: none; }
.doc:hover { background: var(--paper-2); }
.doc[aria-current="true"] { background: var(--paper); border: 1.5px solid var(--ink); box-shadow: var(--shadow-card); }
.doc__icon { display: none; }
.doc .chip { margin-top: 6px; font-size: 11.5px; }
.review { min-height: 320px; }
.review__head { padding: 20px; }
.docs-empty { margin: 20px 0; }
.own-doc { min-height: 0; }
.own-doc__acts, .own-doc__next { display: flex; flex-wrap: wrap; gap: 8px; }
.own-doc__body { display: grid; gap: 12px; padding: 0 20px 22px; font-size: 14px; }
.kept { margin-top: 22px; }
.kept__title { font-size: 17px; margin-bottom: 12px; }
.kept__title span { font-family: var(--font-sans); font-size: 13px; color: var(--ink-3); font-weight: 500; margin-left: 4px; }
.kept__grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.kept__item { display: grid; gap: 4px; align-content: start; padding: 12px 14px; border-radius: var(--radius); border: 1px solid var(--rule); background: var(--paper-3); font-size: 13px; min-height: 76px; }
.kept__item .xtype { justify-self: start; }
.kept__item b { font-weight: 600; line-height: 1.4; }
.kept__when { font-size: 12px; color: var(--ink-3); }
.add-task-help { display: grid; gap: 12px; position: sticky; top: calc(var(--header-h) + 14px); }
.add-task-help h2 { display: flex; align-items: center; gap: 8px; }
.add-task-help .btn { justify-self: start; }
.add-task-page .step-editor { padding-top: 4px; }
.add-task-page .step-editor .demo-note { margin: 6px 0 10px; }

/* 不可用時段 */
.tp { grid-template-columns: minmax(0, 3fr) minmax(240px, 1fr); gap: 24px; }
.tp__toolbar { padding: 14px; }
.tp__toolbar .seg { max-width: 100%; flex-wrap: wrap; }
.tp__side { gap: 14px; }
.side-card { padding: 18px; }
.rules-toggle > span:first-child { color: var(--seal); }
.rule { padding-inline: 0; }
.rule__src { display: none; }
.bottom-nav { display: none !important; }

@media (max-width: 1179px) {
  .app-header__inner { gap: 12px; padding-inline: 22px; }
  .brand__tag { display: none; }
  .top-nav__link { padding-inline: 10px; font-size: 14px; }
  .demo-badge .i, .demo-badge__long { display: none; }
  .demo-badge__short { display: inline; }
  .week { grid-template-columns: minmax(0, 2.6fr) minmax(250px, 1fr); gap: 18px; }
  .week > .margin { display: flex; }
  .tp { grid-template-columns: minmax(0, 2.6fr) minmax(240px, 1fr); gap: 18px; }
  .tp__side { grid-template-columns: 1fr; }
  .wk-head__side { grid-template-columns: 1fr; justify-items: start; }
  .wk-head__side .wk-tools { grid-column: 1; grid-row: 2; }
  .dbar { display: none; }
  .app-main { padding-inline: 22px; }
}
@media (max-width: 899px) {
  .week, .tp, .add-task-page { grid-template-columns: 1fr; }
  .week > .margin { position: static; max-height: 560px; }
  .tasks { grid-template-columns: 220px minmax(0, 1fr); gap: 18px; }
  .tasks.has-detail .tlist { display: block; }
  .tasks:not(.has-detail) .tdetail { display: block; }
  .tback { display: none; }
  .tlist { min-height: 450px; }
  .imp__top { grid-template-columns: 1fr 1fr; }
  .docs, .kept__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .add-task-help { position: static; }
}
@media (max-width: 759px) {
  :root { --header-h: 112px; --bottom-nav-h: 0px; }
  .app-header { height: auto; min-height: var(--header-h); }
  .app-header__inner { display: flex; flex-wrap: wrap; gap: 8px; padding: 12px 16px 8px; }
  .seal { --size: 28px; }
  .brand__name { font-size: 17px; }
  .header-tools { display: flex; margin-left: auto; }
  .header-tools .icon-btn { display: none; }
  .lang-switch { margin-left: auto; }
  .top-nav { display: flex; order: 3; flex: 1 0 100%; overflow-x: auto; gap: 4px; scrollbar-width: thin; }
  .top-nav__link { font-size: 13.5px; padding: 6px 12px; min-height: 44px; }
  .top-nav .lbl-long { display: inline; }
  .top-nav .lbl-short { display: none; }
  .app-main { padding: 14px 14px 36px; }
  .week > .margin { display: flex; }
  .wk-head { padding: 16px; }
  .wk-head .legend { display: flex; flex-wrap: wrap; }
  .wk-tools { justify-content: flex-start; }
  .tasks { grid-template-columns: 1fr; }
  .tlist { min-height: 0; }
  .tasks.has-detail .tlist { display: none; }
  .tasks:not(.has-detail) .tdetail { display: none; }
  .tback { display: inline-flex; }
  .tdetail, .add-task-page .tform { padding: 20px 16px; }
  .imp__top { grid-template-columns: 1fr; }
  .monthly-page .month { padding: 16px 10px; }
  .month__day { min-height: 85px; }
  .month__weekday { font-size: 11px; }
  .side-card { padding: 18px; }
  .margin-page { padding-top: 0; }
  .btn, .seg__opt { min-height: 44px; }
  .tp__toolbar .seg__opt { flex: 1 0 auto; }
}
@media (max-width: 359px) { :root { --header-h: 140px; } .header-tools { order: 4; flex-basis: 100%; justify-content: flex-end; } }