/* 2026-09-15 待办DEV：沿用工作台主题变量，提醒留在文档流，不覆盖课程与名单。 */
.todo-home,.todo-dialog{color:var(--t1);font-family:inherit;background:var(--panel,#fff);border:1px solid var(--l12,#dce5ef);border-radius:18px;box-sizing:border-box}
.todo-home{padding:18px 22px;margin:0 0 22px;border-top:3px solid var(--grn,#168b67)}
.todo-heading,.todo-dialog-heading,.todo-month-nav{display:flex;align-items:center;justify-content:space-between;gap:12px}
.todo-heading h2,.todo-dialog-heading h2{font-size:19px;margin:4px 0 12px}.todo-heading h2 small{font-size:12px;color:var(--t5);font-weight:400;margin-left:8px}.todo-eyebrow{font-size:11px;color:var(--t5);letter-spacing:.05em}
.todo-home button,.todo-dialog button,.todo-calendar-nav{font:inherit;cursor:pointer;color:var(--t3);background:var(--panel2);border:1px solid var(--l12);border-radius:9px;padding:8px 11px;min-height:36px}
.todo-home button:disabled,.todo-dialog button:disabled{opacity:.55;cursor:wait}.todo-home button:focus-visible,.todo-dialog button:focus-visible,.todo-calendar-nav:focus-visible{outline:2px solid var(--cy);outline-offset:2px}
/* 2026-09-16 删除入口：独立按钮且允许换行，手机窄屏仍能完整操作。 */
.todo-edit>div{flex-wrap:wrap}.todo-home .todo-delete,.todo-dialog .todo-delete{color:var(--red,#b42318);margin-left:auto}
.todo-heading>button[data-todo="calendar"]{min-height:42px;font-size:13px;font-weight:700;color:var(--cy);border-color:var(--cy);background:color-mix(in srgb,var(--cy) 8%,var(--panel));white-space:nowrap}
.todo-add{display:flex;gap:8px;align-items:stretch}.todo-content-field{flex:1;min-width:0}.todo-add input,.todo-edit input,.todo-edit textarea{width:100%;box-sizing:border-box;border:1px solid var(--l12);background:var(--panel3);color:var(--t1);font:inherit;font-size:14px;border-radius:9px;padding:10px 12px;min-height:42px}.todo-date-field{width:155px;flex-shrink:0}
.todo-home .todo-primary,.todo-dialog .todo-primary{background:var(--grn,#168b67);color:var(--onAcc,#fff);border-color:transparent;font-weight:600;padding-inline:16px}
/* 2026-09-15 截止日：两个日期明确标注含义，颜色之外保留文字提示。 */
.todo-add{align-items:end}.todo-add label>span{display:block;font-size:11px;color:var(--t5);margin-bottom:5px}.todo-add>.todo-primary{min-height:42px}.todo-row-text .todo-countdown{color:var(--cy);font-weight:600}.todo-row-text .todo-countdown.is-soon{color:var(--amb)}.todo-row-text .todo-countdown.is-overdue{color:var(--red)}
.todo-home-lists{display:flex;gap:22px;align-items:start}.todo-home-lists>section{flex:1;min-width:0}.todo-home-lists .todo-list{max-height:190px;overflow:auto}.todo-overdue h3{font-size:12px;font-weight:500;color:var(--amb);margin:14px 0 0}.todo-overdue h3 b{margin-left:6px}
.todo-list{padding:4px 0}.todo-row{display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--l05);padding:9px 0}.todo-row:last-child{border-bottom:0}.todo-row-text{flex:1;min-width:0;font-size:14px;line-height:1.5;overflow-wrap:anywhere}.todo-row-text time{display:block;color:var(--t5);font-size:11px;margin-top:2px}
.todo-home .todo-check,.todo-dialog .todo-check{position:relative;display:grid;place-items:center;width:44px!important;height:44px!important;min-height:44px!important;min-width:44px!important;padding:0!important;flex:0 0 44px;border:0!important;background:transparent!important;font-size:0!important}.todo-check::before{content:'';box-sizing:border-box;width:22px;height:22px;border:1.5px solid var(--t6);border-radius:50%}.todo-row.is-done .todo-check::before{background:var(--grn);border-color:var(--grn)}.todo-row.is-done .todo-check::after{content:'✓';position:absolute;color:var(--onAcc);font-size:13px}.todo-row.is-done .todo-row-text>span{text-decoration:line-through;color:var(--t5)}.todo-home .todo-edit-button,.todo-dialog .todo-edit-button{font-size:12px;border:0;color:var(--cy);padding:8px}
.todo-empty{font-size:12px;color:var(--t5);margin:16px 0 6px}.todo-error{font-size:13px;color:var(--red);margin:10px 0}.todo-completed{border-top:1px solid var(--l08);padding-top:9px;margin-top:10px}.todo-completed summary{cursor:pointer;font-size:12px;color:var(--t5);padding:4px 0}.todo-completed summary span{margin-left:8px;font-size:11px}.todo-completed>.todo-list{max-height:250px;overflow:auto}
.todo-calendar-nav{display:flex;align-items:center;gap:8px;width:100%;text-align:left;margin:5px 0;color:var(--t4);font-size:12px;white-space:nowrap}
.todo-dialog{width:min(960px,calc(100vw - 32px));max-height:calc(100dvh - 40px);padding:24px;overflow:auto;box-shadow:0 24px 80px #00132b40}.todo-dialog::backdrop{background:#07172b70;backdrop-filter:blur(3px)}.todo-dialog-heading{align-items:start;margin-bottom:18px}.todo-dialog-heading h2{margin-top:7px;font-size:23px}.todo-calendar-layout{display:grid;grid-template-columns:1fr 1fr;gap:26px}.todo-month-nav h3{flex:1;text-align:center;font-size:16px}.todo-month-nav button{min-width:36px}.todo-week-labels,.todo-month-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:4px}.todo-week-labels{margin:10px 0;color:var(--t5);font-size:11px;text-align:center}
.todo-dialog .todo-day{min-height:47px;border-color:transparent;padding:5px;display:flex;flex-direction:column;align-items:center;gap:3px;background:transparent}.todo-day.outside{opacity:.4}.todo-dialog .todo-day.today{color:var(--cy);font-weight:700}.todo-dialog .todo-day.selected{background:var(--cy);color:var(--onAcc);opacity:1}.todo-day small{font-size:9px;display:flex;align-items:center;gap:3px}.todo-day i,.todo-calendar-help i{display:inline-block;width:4px;height:4px;border-radius:50%;background:currentColor}.todo-calendar-help{font-size:11px;color:var(--t5);margin-top:14px}.todo-selected{border-left:1px solid var(--l10);padding-left:24px;min-width:0}.todo-selected h3{font-size:14px;margin:10px 0 14px}.todo-selected .todo-add{flex-wrap:wrap}.todo-selected .todo-content-field{flex-basis:100%}.todo-selected .todo-date-field{flex:1}.todo-edit{display:grid;gap:8px;padding:10px 0;font-size:12px}.todo-edit label{display:grid;gap:4px}.todo-edit textarea{min-height:70px;resize:vertical}.todo-edit>div{display:flex;gap:8px}.todo-sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:650px){.todo-home{padding:14px;margin-bottom:16px}.todo-heading h2{font-size:17px}.todo-heading h2 small{display:block;margin:5px 0 0}.todo-heading>button{font-size:12px;flex-shrink:0}.todo-add{flex-wrap:wrap}.todo-content-field{flex-basis:100%}.todo-date-field{flex:1;width:auto}.todo-home-lists{display:block}.todo-home-lists .todo-list{max-height:150px}.todo-dialog{width:calc(100vw - 16px);max-height:calc(100dvh - 16px);padding:16px}.todo-dialog-heading h2{font-size:17px}.todo-dialog-heading>button{flex-shrink:0;font-size:12px}.todo-calendar-layout{grid-template-columns:1fr;gap:12px}.todo-selected{border-left:0;border-top:1px solid var(--l10);padding:12px 0 0}.todo-dialog .todo-day{min-height:36px}.todo-calendar-nav{width:auto;flex-shrink:0;padding:8px;font-size:11px}.todo-add input,.todo-edit input,.todo-edit textarea{font-size:16px}}
/* 2026-09-16 独立编辑：表单可滚动，标题与操作栏不随内容滚走，窄屏不再受首页列表高度限制。 */
.todo-dialog.todo-editor{width:min(520px,calc(100vw - 24px));max-height:calc(100dvh - 24px);padding:0;overflow:hidden}
.todo-editor[open]{display:flex;flex-direction:column}
.todo-editor-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 20px;border-bottom:1px solid var(--l12);flex-shrink:0}
.todo-editor-heading h2{font-size:19px;margin:0}.todo-editor-heading h2:focus{outline:none}
.todo-editor .todo-edit{display:flex;flex-direction:column;min-height:0;padding:0;gap:0;margin:0;font-size:14px}
.todo-editor .todo-editor-fields{display:grid;gap:14px;min-height:0;overflow:auto;overscroll-behavior:contain;padding:18px 20px}
.todo-editor textarea{height:88px;min-height:72px;resize:vertical}.todo-editor label{gap:7px}
.todo-editor-actions{display:flex;align-items:center;gap:8px;padding:14px 20px;border-top:1px solid var(--l12);background:var(--panel,#fff);flex-shrink:0}
.todo-editor-actions button{min-height:44px;white-space:nowrap}.todo-editor .todo-delete{margin-left:0;margin-right:auto}
@media(max-width:400px){.todo-editor-heading,.todo-editor .todo-editor-fields,.todo-editor-actions{padding:12px}.todo-editor-actions{gap:6px}.todo-editor-actions button{padding-inline:9px}.todo-editor .todo-primary{padding-inline:12px}}