:root{color-scheme:dark;--bg:#171717;--side:#111;--panel:#202020;--hover:#2a2a2a;--text:#eee;--muted:#aaa;--line:#333;--button:#eee;--button-text:#151515;--green:#a6dcb9;--red:#ffb4ad;--amber:#eed194;--shadow:0 8px 35px #0002}
:root[data-theme=light]{color-scheme:light;--bg:#fafafa;--side:#f1f1f1;--panel:#fff;--hover:#eaeaea;--text:#222;--muted:#626262;--line:#ddd;--button:#222;--button-text:#fff;--green:#286441;--red:#a52b2b;--amber:#76580a;--shadow:0 8px 35px #00000005}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.55 -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}a{color:inherit;text-decoration:none}a:hover{color:var(--muted)}button,input,select,textarea{font:inherit}button,a,input,select,textarea{outline-offset:4px}button{cursor:pointer}input,select,textarea{background:var(--bg);border:1px solid var(--line);border-radius:8px;color:var(--text);padding:11px 13px;max-width:100%;width:100%}input[type=checkbox]{width:auto}textarea{min-height:100px}select[multiple]{min-height:120px}label{display:block;margin-bottom:7px;font-size:14px}form p{margin:0 0 20px}form .helptext{display:block;color:var(--muted);font-size:13px;margin-top:7px}.errorlist{color:var(--red);font-size:14px;padding-left:20px}h1,h2,h3,p{margin-top:0}h1{font-size:32px;line-height:1.25;letter-spacing:-1px;font-weight:600;margin-bottom:14px}h2{font-size:19px;font-weight:600;letter-spacing:-.3px;margin-bottom:20px}h3{font-size:16px;font-weight:600;margin-bottom:5px}small{display:block;color:var(--muted);font-size:13px}aside{position:fixed;left:0;top:0;bottom:0;width:248px;background:var(--side);border-right:1px solid var(--line);padding:30px 16px 18px;display:flex;flex-direction:column;z-index:20}.brand{display:flex;align-items:center;gap:12px;padding:0 10px 28px;font-size:16px;letter-spacing:1px}.brand b{font-weight:400;color:var(--muted)}.brand small{font-size:10px;letter-spacing:1.7px;margin-top:4px}.brand-mark{height:37px;width:37px;border:1px solid #777;border-radius:10px;display:grid;place-items:center;font-size:23px;font-weight:650;background:var(--panel);color:var(--text)}.brand-mark.large{width:52px;height:52px;font-size:30px;margin-bottom:28px}nav{overflow:auto}nav a{display:flex;align-items:center;gap:13px;font-size:15px;padding:10px 14px;border-radius:8px;margin:3px 0;color:var(--muted)}nav a[aria-current],nav a:hover{background:var(--hover);color:var(--text)}.nav-label{font-size:10px;letter-spacing:1.5px;color:var(--muted);padding:24px 14px 7px}.count{margin-left:auto;font-size:12px}.sidebar-bottom{margin-top:auto;border-top:1px solid var(--line);padding:18px 12px 0;font-size:14px;display:flex;gap:10px;justify-content:space-between}.sidebar-bottom small{margin-top:2px}.text-button{background:none;border:0;color:var(--muted);padding:0;font-size:13px}.shell{margin-left:248px}.shell.anonymous{margin-left:0}header{height:82px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:22px;padding:0 40px}.breadcrumb{font-size:13px;color:var(--muted);white-space:nowrap}.breadcrumb span{padding:0 12px;color:#777}.search{display:flex;align-items:center;margin-left:auto;width:300px}.search input{border:0;background:transparent;font-size:14px;padding:8px}.search button{background:none;border:0;color:var(--muted);font-size:23px}.icon-button{width:36px;height:36px;background:transparent;border:1px solid var(--line);border-radius:8px;color:var(--text);flex-shrink:0}.anonymous header .icon-button{margin-left:auto}main{max-width:1500px;margin:auto;padding:40px;min-height:calc(100vh - 143px)}footer{padding:20px 40px;font-size:11px;letter-spacing:.6px;color:var(--muted);border-top:1px solid var(--line);display:flex;justify-content:space-between}.eyebrow{font-size:11px;color:var(--muted);letter-spacing:2px;margin-bottom:13px}.muted{color:var(--muted)}.fine{font-size:13px;color:var(--muted)}.page-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:28px}.page-heading p{margin-bottom:8px}.button{display:inline-flex;justify-content:center;align-items:center;gap:8px;padding:10px 17px;border-radius:8px;background:var(--button);color:var(--button-text);border:1px solid var(--button);font-size:14px;font-weight:550;white-space:nowrap;min-height:42px}.button:hover{opacity:.85;color:var(--button-text)}.button.secondary{background:transparent;color:var(--text);border:1px solid var(--line)}.button.small{padding:6px 11px;min-height:34px;font-size:13px}.button.full{width:100%}.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:24px;margin-bottom:22px;box-shadow:var(--shadow)}.auth-card{max-width:410px;margin:7vh auto}.auth-card.wide{max-width:560px;margin-top:20px}.auth-card .muted a{text-decoration:underline}.form-panel{max-width:800px}.message{border:1px solid var(--line);background:var(--hover);padding:14px 20px;margin-bottom:22px;border-radius:8px}.table-wrap{padding:0;overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:14px}th,td{padding:15px 20px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}th{font-size:12px;color:var(--muted);font-weight:500;background:var(--side)}tr:last-child td{border-bottom:0}td small{margin-top:3px}.inline{display:flex;align-items:center;gap:8px}.inline select{width:auto;min-width:120px}.badge{font-size:12px;display:inline-flex;border:1px solid var(--line);padding:3px 9px;border-radius:6px;white-space:nowrap}.badge.active,.badge.reviewed,.badge.submitted,.badge.present{color:var(--green)}.badge.pending,.badge.revision,.badge.late,.badge.moved,.badge.important{color:var(--amber)}.badge.blocked,.badge.rejected,.badge.cancelled,.badge.absent,.badge.urgent{color:var(--red)}.mobile-only{display:none}.sr-only,.skip:not(:focus){position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.skip:focus{position:fixed;z-index:100;background:var(--button);color:var(--button-text);padding:10px}
@media(max-width:1100px){aside{width:216px}.shell{margin-left:216px}main{padding:28px}header{padding:0 28px}.breadcrumb{display:none}}
@media(max-width:760px){aside{transform:translateX(-100%);transition:transform .2s;width:248px;padding-top:20px}.menu-open aside{transform:translateX(0);box-shadow:0 0 0 100vmax #0008}.shell{margin-left:0}.mobile-only{display:block}header{height:64px;padding:0 18px;gap:12px;position:relative;z-index:21;background:var(--bg)}.menu-open header{margin-left:248px}.search{width:auto;flex:1}.search input{width:100%;min-width:0}.anonymous .breadcrumb{display:block}main{padding:24px 18px}h1{font-size:27px}.page-heading{align-items:flex-start;flex-wrap:wrap;gap:10px}.panel{padding:18px}.table-wrap{padding:0}footer{padding:20px 18px}footer span{display:none}.auth-card{margin-top:4vh}.inline{flex-wrap:wrap}}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-bottom:32px}.stat{border:1px solid var(--line);border-radius:10px;padding:20px;background:var(--panel)}.stat>span{font-size:10px;letter-spacing:1.3px;color:var(--muted);display:block}.stat strong{font-size:34px;font-weight:500;letter-spacing:-1px;display:block;margin:10px 0 5px}.stat em{font-size:17px;font-style:normal;color:var(--muted)}.dashboard-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(280px,1fr);gap:24px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:18px}.section-heading h2,.section-heading h3,.section-heading p{margin-bottom:0}.section-heading>a{font-size:12px;color:var(--muted);white-space:nowrap}.section-heading .eyebrow{margin:0}.lesson{display:flex;gap:20px;padding:18px 0;border-bottom:1px solid var(--line)}.lesson:first-of-type{padding-top:0}.lesson:last-of-type{border-bottom:0}.lesson-time{min-width:50px;text-align:center}.lesson-time strong{font-size:17px;font-weight:500}.lesson-time small{margin-top:5px}.lesson-content{flex:1;min-width:0}.lesson-content .section-heading{margin-bottom:8px}.lesson-content .muted{font-size:13px;margin:6px 0}.lesson.cancelled h3{text-decoration:line-through;color:var(--muted)}.lesson.moved{border-left:2px solid var(--amber);padding-left:14px}.lesson-task{display:flex;gap:15px;align-items:center;justify-content:space-between;background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:10px 12px;font-size:12px;margin-top:12px}.next-lesson{display:flex;align-items:center;gap:10px;background:var(--bg);padding:12px;border-radius:7px;font-size:12px;margin-top:15px;color:var(--muted)}.live-dot{width:6px;height:6px;background:var(--green);border-radius:50%;flex-shrink:0}.task-row{display:flex;align-items:center;gap:12px;padding:18px 0;border-bottom:1px solid var(--line)}.task-row:last-child{border-bottom:0}.task-row h3{font-size:14px}.task-check{font-size:20px;color:var(--muted)}.grow{flex:1;min-width:0}.announcement{border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:20px}.announcement:last-child{border-bottom:0;padding-bottom:0;margin-bottom:0}.announcement p{font-size:14px;margin:9px 0 0}.announcement.urgent{border-left:2px solid var(--red);padding-left:14px}.announcement.important{border-left:2px solid var(--amber);padding-left:14px}.announcement .section-heading{margin-bottom:10px}.list-row{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px}.list-row:last-child{border-bottom:0}.list-row h3{font-size:14px}.list-row h2{font-size:18px;margin:7px 0}.list-row p{margin:0}.file-icon{display:grid;place-items:center;background:var(--bg);border:1px solid var(--line);width:35px;height:40px;border-radius:7px;color:var(--muted);flex-shrink:0}.list-row:has(.file-icon){justify-content:flex-start}.quiet-link{font-size:13px;text-decoration:underline;text-underline-offset:4px}.empty{padding:28px 15px;text-align:center;color:var(--muted);font-size:14px;margin:0}.empty p{margin:8px 0}.empty-symbol{font-size:28px;color:var(--muted)}.admin-strip{display:flex;gap:25px;justify-content:space-between;align-items:center;padding:15px 20px;background:var(--hover);border:1px solid var(--line);border-radius:9px;margin-bottom:25px;font-size:13px}.subject-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.subject-card{display:flex;flex-direction:column;min-height:280px;margin:0}.subject-card h2{margin:14px 0;font-size:21px}.subject-card p{font-size:14px}.subject-monogram{font-size:18px;padding:8px 10px;border-radius:9px;border:1px solid var(--line);background:var(--bg)}.subject-footer{margin-top:auto;display:flex;gap:15px;justify-content:space-between;padding-top:20px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.tabs{display:flex;gap:3px;overflow-x:auto;border-bottom:1px solid var(--line);margin-bottom:26px}.tabs a{padding:12px 15px;white-space:nowrap;color:var(--muted);font-size:14px;border-bottom:2px solid transparent}.tabs a[aria-current]{color:var(--text);border-color:var(--text)}.spaced{margin-top:25px}.prose{overflow-wrap:anywhere}.prose p{margin-bottom:18px}.actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;font-size:12px}.lesson-content .actions{margin-top:10px}.toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px}.toolbar .tabs{margin:0;border:0}.schedule-grid.week{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.day-panel{margin-bottom:20px}.day-panel>h2{border-bottom:1px solid var(--line);padding-bottom:18px}.day-panel h2 span{font-size:14px;margin-left:10px}.schedule-grid.month{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.month .day-panel{padding:14px;min-height:150px;margin:0}.month .day-panel>h2{font-size:13px}.month .lesson{gap:8px;flex-direction:column}.month .lesson-time{text-align:left;font-size:12px}.month .lesson-time small{display:inline}.month .lesson-task{flex-direction:column;align-items:flex-start}.month .empty{padding:4px;font-size:11px}.month .empty-symbol{display:none}.filters{display:flex;gap:12px;margin-bottom:24px;flex-wrap:wrap}.filters input,.filters select{width:auto;flex:1;min-width:140px;max-width:300px;font-size:14px}.deadline-box{background:var(--bg);padding:18px;border-radius:9px;border:1px solid var(--line);margin:24px 0}.deadline-box small{font-size:10px;letter-spacing:1px;margin-bottom:6px}.file-link{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:12px;background:var(--bg);border:1px solid var(--line);border-radius:7px;margin:10px 0;font-size:13px;overflow-wrap:anywhere}.file-link small{white-space:nowrap}.history-item{border-top:1px solid var(--line);padding:20px 0}.history-item:last-child{padding-bottom:0}.feedback{border-left:2px solid var(--muted);padding:12px 18px;background:var(--bg);font-size:14px}.feedback p:last-child{margin:0}.material-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.material-grid .panel{margin:0}.attendance-calendar{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));border:1px solid var(--line);border-radius:10px;overflow:hidden;margin-bottom:25px}.calendar-cell{padding:14px 10px;min-height:100px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--panel)}.attendance-dot{display:block;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;font-size:10px;margin-top:6px;padding:3px;border-radius:3px;background:var(--hover)}.attendance-dot.present{color:var(--green)}.attendance-dot.absent{color:var(--red)}.attendance-dot.late,.attendance-dot.excused{color:var(--amber)}.notification{display:flex;align-items:center;gap:16px;padding:20px 0;border-bottom:1px solid var(--line)}.notification:last-child{border:0}.notification.unread::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--green);flex-shrink:0}.notification h3{font-size:15px}.manage-card{margin-bottom:0;min-height:120px}.manage-card span{font-size:13px}.export-grid{display:flex;gap:30px;flex-wrap:wrap}.export-grid a{font-size:13px;text-decoration:underline;margin-left:15px}.manage-card:last-child{margin-bottom:24px}.danger-link{color:var(--red)}details summary{cursor:pointer;font-size:14px}pre{white-space:pre-wrap;overflow-wrap:anywhere;max-width:450px;font-size:12px}.pagination{display:flex;align-items:center;justify-content:center;gap:20px;margin-top:25px;font-size:14px}.mark-links{max-height:400px;overflow:auto}
@media(max-width:1250px){.subject-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.schedule-grid.month{grid-template-columns:repeat(3,minmax(0,1fr))}.schedule-grid.week{grid-template-columns:1fr}.dashboard-grid{grid-template-columns:minmax(0,1.2fr) minmax(250px,1fr)}.task-row .badge{font-size:10px}}
@media(max-width:1000px){.dashboard-grid{grid-template-columns:1fr}.stats-grid{gap:10px}.stat{padding:14px}.stat strong{font-size:29px}.admin-strip{flex-wrap:wrap;gap:12px}.attendance-calendar{grid-template-columns:repeat(5,minmax(0,1fr))}}
@media(max-width:760px){.stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));margin-bottom:24px}.stat>span{font-size:10px}.stat strong{font-size:30px}.subject-grid,.material-grid{grid-template-columns:1fr}.subject-card{min-height:220px}.dashboard-grid{gap:0}.section-heading{gap:10px}.section-heading h2{font-size:17px}.section-heading>a{font-size:11px}.task-row{gap:9px}.task-row>.badge{max-width:95px;white-space:normal}.task-row>span:last-child{display:none}.lesson{gap:14px}.lesson-task{flex-wrap:wrap}.lesson-content h3{font-size:15px}.toolbar{flex-wrap:wrap;gap:10px}.toolbar .tabs a{padding:9px 13px}.schedule-grid.month{grid-template-columns:repeat(2,minmax(0,1fr))}.attendance-calendar{grid-template-columns:repeat(3,minmax(0,1fr))}.notification{flex-wrap:wrap}.tabs a{padding:10px 13px;font-size:13px}.filters input,.filters select{max-width:100%}.file-link{font-size:12px}.admin-strip{font-size:12px}.page-heading .actions{width:100%}}

.checkpoint{border-left:4px solid #e58d35!important;background:color-mix(in srgb,#e58d35 12%,var(--panel))!important}

.chat-group-link{display:block;margin-bottom:24px}.online{color:#58af75}.chat-messages{height:55vh;overflow:auto;display:flex;flex-direction:column;gap:12px;padding:14px 4px}.chat-message{align-self:flex-start;max-width:85%;padding:14px 18px;border:1px solid var(--line);border-radius:18px;background:var(--panel);overflow-wrap:anywhere}.chat-message.mine{align-self:flex-end;background:color-mix(in srgb,var(--text) 6%,var(--panel))}.chat-message small,.chat-message>a{display:block;margin-top:5px}.chat-body{white-space:pre-wrap}.chat-photo{display:block;max-width:100%;max-height:320px;border-radius:10px;margin:8px 0}#chat-form textarea{width:100%}#chat-error{color:#d67165}#chat-files{max-width:220px}#chat-typing{min-height:22px}.chat-message a{word-break:break-word}@media(max-width:600px){.chat-message{max-width:94%}.chat-messages{height:50vh}#chat-files{max-width:150px}}