:root{--blue:#1764ff;--ink:#25364f;--muted:#79879b;--line:#e0e8f5;--green:#00a333;--orange:#f18927}*{box-sizing:border-box}body{margin:0;background:#eef1f7;color:var(--ink);font:14px/1.6 'Microsoft YaHei','PingFang SC',sans-serif}header{display:flex;align-items:center;justify-content:space-between;padding:0 26px;background:white;border-bottom:1px solid var(--line)}header strong{font-size:20px;color:#105198}header span{font-size:12px}main{margin:0 22px 24px}button,input,select{font:inherit}button,a,summary{cursor:pointer}button{color:var(--blue);background:white;border:1px solid #d5e0f5;padding:8px 14px;border-radius:6px}button:disabled{opacity:.4;cursor:not-allowed}button:hover:not(:disabled){background:#f2f6ff}button.primary{background:var(--blue);color:white;border-color:var(--blue)}a{color:var(--blue);text-decoration:none}button:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--blue);outline-offset:3px}input,select{background:white;border:1px solid #d6e0ee;border-radius:6px;padding:8px;color:var(--ink)}input[type=checkbox]{accent-color:var(--blue)}.pagebar{height:62px;display:flex;align-items:center;justify-content:space-between}.page-tab{padding:14px 20px;border-top:2px solid var(--blue);background:#f7faff;color:var(--blue)}.workspace{background:white;padding:24px;border:1px solid #e7edf6;border-radius:10px}.heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;gap:16px}.heading h1{font-size:22px;font-weight:600;margin:0}.heading p{margin:5px 0 0;color:var(--muted);font-size:13px}.heading a{white-space:nowrap}.workflow{display:flex;gap:12px;padding-bottom:20px;border-bottom:1px solid var(--line)}.workflow button{display:flex;flex-direction:column;text-align:left;gap:4px;min-width:260px;padding:12px 18px;color:#64748d;border-color:var(--line)}.workflow button b{font-size:15px}.workflow button span{font-size:12px}.workflow .active{background:#eef4ff;border-color:#a9c4ff;color:var(--blue)}.actionbar{display:flex;justify-content:space-between;align-items:center;padding:16px 0;gap:12px}.actionbar>div{display:flex;gap:8px}.muted{color:var(--muted);font-size:12px}.filters{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:12px 14px;background:#f7f9fd;border:1px solid var(--line);border-radius:8px}.filters label{display:flex;align-items:center;gap:8px}.spacer{flex:1}.room-picker{position:relative;background:white;border:1px solid #d6e0ee;border-radius:6px}.room-picker summary{padding:8px 12px}.room-picker>div{position:absolute;top:43px;left:0;z-index:800;min-width:240px;background:white;box-shadow:0 10px 24px #1664ff19;border:1px solid var(--line);padding:12px;border-radius:8px}.room-picker label{display:flex;padding:5px}.workbench{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:18px;margin-top:18px}.canvas{min-width:0}.table-caption,.panel-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:0 0 12px}.legend{display:flex;gap:10px;font-size:11px;color:var(--muted)}.legend span:before{content:'';display:inline-block;width:7px;height:7px;border:1px solid #cdd8e9;margin-right:4px}.legend .blue-dot:before{background:#cbdfff}.legend .green-dot:before{background:#cbf1dc}.legend .orange-dot:before{background:#ffe0a4}.selection-hint{font-size:12px;min-height:42px;background:#f4f8ff;padding:10px 12px;border-radius:6px;margin-bottom:12px;color:#587399}.grid-scroll{overflow:auto;max-height:640px;border:1px solid var(--line);border-radius:8px}.grid-scroll table{border-collapse:separate;border-spacing:0;table-layout:fixed;width:max-content;min-width:100%;font-size:12px}.grid-scroll th,.grid-scroll td{border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-width:118px;width:118px;padding:7px}.grid-scroll th{background:#edf3ff;font-weight:500;text-align:center}.grid-scroll thead th{position:sticky;top:0;z-index:500;height:36px}.grid-scroll thead tr:nth-child(2) th{top:36px}.grid-scroll .roomname{position:sticky;left:0;z-index:510;min-width:150px;width:150px;text-align:left;background:#f6f9ff;padding:12px}.grid-scroll thead .roomname{z-index:520;top:0}.roomname strong{display:block;font-size:14px}.roomname small{display:block;margin-top:6px;color:var(--muted)}.grid-scroll td{height:146px;vertical-align:top;background:white;cursor:pointer}.grid-scroll td.available{background:#f0faf4}.grid-scroll td.unavailable{background:#fafbfe;color:#a6b0c0}.grid-scroll td.available:hover,.grid-scroll td.dragover{outline:2px solid var(--blue);outline-offset:-2px}.free{display:block;padding:16px 3px;color:#a8b5c8;text-align:center}.available .free{color:#28905c}.lesson{display:block;background:#edf4ff;border:1px solid #d5e5ff;border-left:3px solid var(--blue);border-radius:5px;padding:8px 6px;text-align:left;width:100%;color:var(--ink);font-size:12px;white-space:normal}.lesson strong,.lesson span{display:block;overflow-wrap:anywhere}.lesson span{color:#6680a3;margin-top:3px;font-size:11px}.lesson.locked{background:#fff7e7;border-color:#f1dca9;border-left-color:var(--orange)}.grid-note{margin:10px 0}.taskpanel{border:1px solid var(--line);border-radius:10px;background:#f9fbff;padding:14px;min-width:0}.panel-head h2{font-size:15px;margin:0}.panel-head>span{font-size:12px;color:var(--muted)}.search input,.taskpanel>select{width:100%;margin-bottom:10px}.taskpanel #taskPool{max-height:620px;overflow:auto}.taskcard{border:1px solid var(--line);background:white;border-radius:8px;margin:10px 0;padding:12px}.taskcard h3{font-size:14px;margin:0 0 4px}.taskcard p{font-size:12px;margin:4px 0;color:#6e819d}.taskcard .lesson-chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}.lesson-chips button{font-size:11px;padding:5px 7px}.lesson-chips .chosen{background:var(--blue);color:white}.lesson-chips .resolved{color:#29804d;background:#f1faf4}.lesson-chips .waiting{color:#b56d21;background:#fff7eb;border-color:#f2d9bb}.taskcard.active{border-color:#91b6ff}.assignment-tools{padding:12px;background:#edf4ff;border-radius:8px;font-size:12px}.assignment-tools strong{display:block}.assignment-tools select,.assignment-tools button{width:100%;margin-top:8px}.boundary{margin-top:18px;border-top:1px solid var(--line);padding-top:14px;font-size:12px;color:var(--muted)}.boundary summary{color:#617895}.boundary p{max-width:1000px}.empty{text-align:center;padding:28px 14px;color:var(--muted);font-size:12px}.empty svg{display:block;margin:0 auto 10px}#feedback:empty{display:none}#feedback{padding:11px 14px;margin-bottom:12px;border-radius:6px;background:#eef8f1;color:#27844b;font-size:13px}#feedback.error{background:#fff3ed;color:#b55b2b}dialog{border:1px solid var(--line);border-radius:16px;width:min(580px,90vw);padding:24px;box-shadow:0 18px 40px #1664ff29;color:var(--ink)}dialog::backdrop{background:#20345055}dialog h2{font-size:19px;margin-top:0}.dialog-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}.dialog-footer{border-top:1px solid var(--line);margin-top:20px;padding-top:14px;text-align:right}.detail-grid{display:grid;grid-template-columns:90px 1fr;gap:10px;font-size:13px}.detail-grid dt{color:var(--muted)}.detail-grid dd{margin:0}.danger{color:#d65858}body.focus .sidebar{display:none}body.focus main{margin-left:22px}@media(min-width:1700px){.grid-scroll th,.grid-scroll td{min-width:125px;width:125px}.workbench{grid-template-columns:minmax(0,1fr) 330px}}@media(max-width:1180px){.workbench{grid-template-columns:minmax(0,1fr)}.taskpanel #taskPool{max-height:400px;display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:10px}.legend{display:none}.taskcard{margin:0}.heading{align-items:flex-start}}@media(max-width:760px){.workspace{padding:14px}.workflow{flex-direction:column}.workflow button{min-width:0}.actionbar{flex-wrap:wrap}.heading h1{font-size:19px}.pagebar>.muted{display:none}}

.week-days{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin-bottom:12px}.week-days[hidden]{display:none}.week-days button{padding:5px 12px;font-size:12px}.week-days .muted{margin-left:auto}

.page-tools{display:flex;align-items:center;gap:14px}.page-tools #workspaceMode{width:108px;padding:5px 8px;font-size:12px;color:#647995;border-color:#dce5f2;background:#f8faff}@media(max-width:760px){.page-tools>.muted{display:none}}

/* 已排课程分配：独立的节次选择与房间比较工作台。 */
#scheduleWorkspace[hidden],#scheduleFilters[hidden],#assignWorkspace[hidden]{display:none!important}
.assign-intro{display:flex;justify-content:space-between;align-items:center;gap:16px;margin:8px 0 20px}.assign-intro h2{margin:0;font-size:20px}.assign-intro p{font-size:13px;color:var(--muted);margin:6px 0 0}.time-lock{border:1px solid #c8dfd0;background:#f0faf4;color:#348456;font-size:12px;padding:6px 12px;border-radius:6px;white-space:nowrap}.assign-filters{display:flex;gap:16px;flex-wrap:wrap;background:#f7f9fd;padding:16px;border:1px solid var(--line);border-radius:8px;margin-bottom:20px}.assign-filters label{display:flex;flex-direction:column;gap:6px;min-width:190px;font-size:12px;color:#697e9b}.assign-filters .course-filter{min-width:300px;flex:1}.assign-layout{display:grid;grid-template-columns:330px minmax(0,1fr);gap:20px}.existing-lessons,.room-comparison{border:1px solid var(--line);border-radius:10px;padding:18px;min-width:0}.existing-lessons{background:#f9fbff}.assign-section-heading{display:flex;gap:10px;align-items:flex-start;margin-bottom:16px}.step-number{display:grid;place-items:center;flex:0 0 25px;height:25px;background:#eaf1ff;color:var(--blue);font-size:13px;border-radius:50%}.assign-section-heading h3{font-size:14px;margin:0}.assign-section-heading p{font-size:12px;color:var(--muted);margin:4px 0 0}.select-pending{font-size:12px;width:100%;margin-bottom:12px}.existing-list{display:flex;flex-direction:column;gap:10px;max-height:520px;overflow:auto}.existing-lesson{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:8px;padding:13px 10px;background:white;cursor:pointer}.existing-lesson.checked{border-color:#92b6ff;background:#f0f5ff}.existing-lesson>div{flex:1;min-width:0}.existing-lesson strong{display:block;font-size:13px}.existing-lesson span{display:block;font-size:11px;color:var(--muted);margin-top:4px}.existing-lesson small{font-size:10px;white-space:nowrap}.existing-lesson .done{color:#348456}.existing-lesson .pending{color:#b17538}.assign-help{font-size:12px;color:var(--muted);line-height:1.8;margin:14px 0 0}.compare-scroll{overflow:auto;max-height:580px;border:1px solid var(--line);border-radius:8px}.compare-table{border-collapse:separate;border-spacing:0;width:100%;font-size:12px;min-width:400px}.compare-table th,.compare-table td{border-bottom:1px solid var(--line);border-right:1px solid var(--line);padding:12px;text-align:center;min-width:110px}.compare-table thead th{background:#edf3ff;position:sticky;top:0;z-index:2}.compare-table th:first-child{text-align:left;min-width:125px}.compare-table small{display:block;font-size:11px;font-weight:normal;margin-top:5px;color:var(--muted);max-width:230px}.compare-table td.usable{background:#f6fcf8;color:#328451}.compare-table td.blocked{background:#fff8f1;color:#b97837}.compare-table b{font-weight:500}.compare-table .selected-room>th{border-left:3px solid var(--blue);background:#edf4ff}.compare-table .selected-room button{background:var(--blue);color:white}.compare-table button{font-size:12px;white-space:nowrap;padding:7px 10px}.assignment-summary{position:sticky;bottom:0;z-index:600;display:flex;justify-content:space-between;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:8px;padding:16px 20px;margin-top:20px;box-shadow:0 -4px 18px #25364f06}.assignment-summary strong{font-size:14px}.assignment-summary p{font-size:12px;color:var(--muted);margin:4px 0 0}.assignment-summary>div:last-child{display:flex;gap:10px;white-space:nowrap}@media(max-width:1150px){.assign-layout{grid-template-columns:280px minmax(0,1fr)}.existing-lessons,.room-comparison{padding:12px}.assign-filters .course-filter{min-width:220px}}@media(max-width:900px){.assign-layout{grid-template-columns:1fr}.existing-list{max-height:300px}.assignment-summary{flex-wrap:wrap}.time-lock{display:none}}

.taskpanel #taskPool{display:flex;flex-direction:column;gap:8px}.course-pool-item{display:block;flex-shrink:0;width:100%;min-width:0;padding:5px 10px;border:1px solid #e6e9ef;border-radius:4px;background:#fafbfe;color:#25364f;text-align:left;font-size:13px;line-height:20px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.course-pool-item.chosen{border-color:#91b6ff;background:#edf4ff;color:#1764ff}.course-pool-item:disabled{opacity:1;color:#b7bdc7;background:#fafbfc}

/* 班级颜色贯穿待排区与场地总表；状态以描边和文字表达。 */
.pool-help{font-size:11px;color:#7b8798;line-height:1.8;margin-bottom:4px}.class-pool-group{border:1px solid #e1e7ef;border-left:3px solid var(--class-color);border-radius:6px;background:white;transition:opacity .15s}.class-pool-heading{display:block;width:100%;padding:9px 10px;border:0;border-radius:3px 3px 0 0;background:var(--class-bg);color:#25364f;text-align:left}.class-pool-heading strong{display:block;font-size:13px;white-space:normal;overflow-wrap:anywhere}.class-pool-heading span{display:block;font-size:11px;color:#6e7c8e;margin-top:3px}.class-course-list{display:flex;flex-direction:column;gap:5px;padding:8px}.class-course-list .course-pool-item{background:var(--class-bg);border-color:transparent;font-size:12px}.class-course-list .course-pool-item.chosen{outline:2px solid #1764ff;outline-offset:-2px;color:#164da6;background:var(--class-bg);font-weight:600}.class-course-list .course-pool-item:disabled{background:#f6f7f9;color:#a0a8b3}.class-distribution{margin:0;padding:0 10px 8px;font-size:10px;color:#788597;line-height:1.7}.clear-class-focus{font-size:11px;padding:4px 8px;align-self:flex-start}.lesson,.lesson.locked{background:var(--class-bg,#edf4ff);border:1px solid #dce3ec;border-left:3px solid var(--class-color,#1764ff)}.lesson.locked{border-top-style:dashed;border-right-style:dashed;border-bottom-style:dashed}.lesson.class-focused{outline:2px solid var(--class-color);outline-offset:-1px}.class-pool-group.class-focused{box-shadow:0 0 0 1px var(--class-color)}.class-muted{opacity:.4}.class-muted:hover,.class-muted:focus-within{opacity:1}.legend .blue-dot:before{background:#d8e8f2;border-left:3px solid #327bb5}@media(min-width:1181px){.workbench{grid-template-columns:minmax(0,1fr) 340px}}

.lesson-wrap{position:relative}.lesson-wrap .lesson{padding-right:23px}.lesson-remove{position:absolute;right:3px;top:3px;width:22px;height:22px;padding:0;border:0;border-radius:4px;background:#fff;color:#b55b5b;font-size:18px;line-height:22px;opacity:0}.lesson-wrap:hover .lesson-remove,.lesson-wrap:focus-within .lesson-remove{opacity:1}.lesson-remove:hover{background:#fff0ed!important}@media(hover:none){.lesson-remove{opacity:1}}

.legend{gap:18px;font-size:12px;flex-wrap:wrap}.legend span:before{width:12px;height:12px;border:0;vertical-align:-1px;margin-right:7px;background:currentColor}.legend .status-available{color:#4bc51b}.legend .status-teacher{color:#d74ff3}.legend .status-class{color:#ffb84f}.legend .status-discouraged{color:#8872ff}.legend .status-blocked{color:#94a0b2}
.grid-scroll td.available{background:#f0fae9}.available .free{color:#399914}.grid-scroll td.teacher-conflict{background:#faedfe;box-shadow:inset 3px 0 #d74ff3}.grid-scroll td.class-conflict{background:#fff5e5;box-shadow:inset 3px 0 #ffb84f}.teacher-conflict .free{color:#ac2bc7}.class-conflict .free{color:#ab6b0b}

.secondary-tools{display:flex;align-items:center;gap:16px;white-space:nowrap}.secondary-tools a,.secondary-tools button{font-size:12px;color:#8491a5}.secondary-tools button{border:0;background:transparent;padding:4px 0}.workflow{margin-bottom:18px}

.view-switch{display:flex;flex-wrap:wrap;gap:0;width:fit-content;max-width:100%;border:1px solid #d5e0f5;border-radius:7px;overflow:hidden;margin:0 0 12px}.view-switch button{border:0;border-right:1px solid #e0e8f5;border-radius:0;min-width:55px;padding:7px 15px;background:white;color:#65768e}.view-switch button:last-child{border-right:0}.view-switch button.active{background:#1764ff;color:white}.view-switch button.active:hover{background:#1764ff}