:root{font-family:Inter,"Segoe UI",Arial,sans-serif;color:#18314a;background:#eaf1f5;font-size:16px;--ink:#18314a;--muted:#62788a;--line:#d5e1e8;--teal:#067c72;--blue:#295bbe;--glass:rgba(255,255,255,.63);--shadow:0 16px 48px #2048660c;line-height:1.5}
*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(ellipse at 90% 5%,#c7eee7 0,transparent 42%),radial-gradient(ellipse at 10% 80%,#d6dff6 0,transparent 50%)}[hidden]{display:none!important}button,input,textarea,select{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer;border:1px solid var(--line);border-radius:12px;background:#ffffffaa;color:var(--ink);padding:10px 16px;font-weight:600;transition:background .15s,transform .15s}button:hover{background:#fff;transform:translateY(-1px)}button:disabled{opacity:.5;cursor:wait;transform:none}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #278dcb;outline-offset:3px}h1,h2,h3,p{margin-top:0}h1{font-size:2.3rem;letter-spacing:-1.3px;line-height:1.2;margin-bottom:10px}h2{font-size:1.35rem;letter-spacing:-.4px}h3{font-size:1.06rem}small,.muted{color:var(--muted)}small{font-size:.8rem}.eyebrow{display:block;font-size:.73rem;letter-spacing:1.8px;font-weight:700;color:var(--muted);margin-bottom:8px}.glass{background:var(--glass);border:1px solid #ffffffd9;box-shadow:var(--shadow),inset 0 1px 0 #fff;backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px)}.ambient{position:fixed;z-index:-1;filter:blur(75px);border-radius:50%;pointer-events:none}.ambient-a{width:300px;height:300px;background:#9bdfd345;right:5%;top:20%}.ambient-b{width:300px;height:300px;background:#bcccf744;left:20%;bottom:5%}.brand{display:flex;align-items:center;gap:10px;font-size:1.45rem;font-weight:750;letter-spacing:-.8px}.brand span{font-size:.8rem;letter-spacing:1px;border-left:1px solid #8ea8bc;padding-left:12px;margin-left:5px}.app{display:grid;grid-template-columns:245px 1fr;min-height:100vh}.sidebar{position:sticky;top:0;height:100vh;border-radius:0 26px 26px 0;padding:32px 20px;display:flex;flex-direction:column}.sidebar-sub{font-size:.64rem;letter-spacing:1px;margin:14px 0 45px;color:var(--muted)}nav{display:grid;gap:8px}nav [data-route]{padding:13px 15px;border-radius:13px;font-size:.92rem;font-weight:550;display:flex;align-items:center;gap:13px;border:0;background:transparent;text-align:left;width:100%}nav [data-route] span{font-size:1.3rem;line-height:1;width:22px;text-align:center}nav [data-route].active{background:#173953;color:#fff;box-shadow:0 7px 16px #12394e1c}nav [data-route]:hover{text-decoration:none;background:#dae8ed}nav [data-route].active:hover{background:#214962}.sidebar-bottom{margin-top:auto}.semester{display:grid;font-size:.78rem;gap:4px;padding:20px 8px 28px}.semester .eyebrow{font-size:.65rem}.semester>span:last-child{color:var(--muted)}.profile{display:flex;gap:10px;padding:12px 0;border:0;border-top:1px solid var(--line);width:100%;background:none;text-align:left;align-items:center}.profile strong{display:block;font-size:.87rem}.profile small{display:block;font-weight:400}.avatar{display:grid;place-items:center;border-radius:13px;background:#d2e7e8;width:39px;height:39px;color:#226263;font-size:.8rem}.text-button{border:0;background:none;font-size:.85rem;padding:10px 0;color:var(--muted)}main{min-width:0;padding:26px 42px 0;max-width:1600px;width:100%;margin:auto}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:26px}.topbar .eyebrow{margin:0}.clock{display:flex;align-items:center;gap:12px;font-size:.86rem;font-variant-numeric:tabular-nums}.clock .muted{border-left:1px solid #a7bdc9;padding-left:12px}.notice{background:#ffffff80;border:1px solid #fff;border-radius:14px;padding:13px 18px;display:flex;align-items:center;gap:12px;font-size:.88rem;margin-bottom:10px}.notice-mark{color:#9c6505;background:#fff1ce;border-radius:8px;padding:3px 10px;font-weight:700}.notice [data-route]{margin-left:auto;font-size:.83rem;white-space:nowrap;text-decoration:underline;border:0;background:transparent;padding:0;color:inherit}.page-heading{display:flex;justify-content:space-between;gap:16px;align-items:end;margin:32px 0 26px}.page-heading p{margin:0;color:var(--muted)}.heading-actions,.toolbar{display:flex;gap:9px;align-items:center;flex-wrap:wrap}.primary{background:#183d55;color:white;border-color:#183d55}.primary:hover{background:#26546e}.accent{background:#0d8077;color:#fff;border-color:#0d8077}.accent:hover{background:#0b695f}.danger{color:#b03445}.badge{display:inline-block;padding:4px 9px;border-radius:7px;background:#e2eaf5;color:#436591;font-size:.74rem;font-weight:650;white-space:nowrap}.badge.teal{background:#d6efe9;color:#07665e}.badge.amber{background:#fff0cb;color:#855806}.badge.red{background:#f8dde1;color:#a02c40}.stats{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:16px;margin-bottom:26px}.stat{border-radius:20px;padding:21px 24px;min-height:136px}.stat.feature{background:linear-gradient(115deg,#164156,#276166);color:white;border:1px solid #ffffff70;position:relative;overflow:hidden}.stat .eyebrow{letter-spacing:1.2px}.stat.feature .eyebrow,.stat.feature .muted{color:#c3dedf}.stat strong{font-size:1.6rem;display:block;line-height:1.35;letter-spacing:-.6px}.stat.feature strong{font-size:1.2rem}.stat p{font-size:.83rem;margin:8px 0 0}.stat .progress-track{height:4px;background:#ffffff30;border-radius:4px;margin-top:16px;overflow:hidden}.stat .progress-track i{display:block;height:100%;background:#80e4c5;transition:width 1s linear}.schedule-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:22px}.panel{padding:23px;border-radius:22px}.section-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;gap:12px}.section-heading h2{margin:0}.date-navigation{display:flex;align-items:center;gap:8px}.date-navigation button{padding:6px 12px}.date-navigation input{padding:6px 10px;max-width:160px}.week{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:5px;margin:18px 0 26px}.day{border:0;background:transparent;padding:9px 3px;font-size:.72rem;color:var(--muted);border-radius:12px}.day strong{display:block;font-size:1.08rem;margin-top:4px;color:var(--ink)}.day.selected{background:#163f55;color:#c5d7df}.day.selected strong{color:#fff}.day.today:not(.selected){box-shadow:inset 0 -3px #379d91}.lesson-row{display:grid;grid-template-columns:57px 1fr;gap:16px;position:relative}.time-label{font-variant-numeric:tabular-nums;padding-top:16px;font-size:.82rem;font-weight:700;text-align:right}.time-label small{display:block;font-size:.72rem;font-weight:400;margin-top:5px}.lesson{isolation:isolate;position:relative;border:1px solid #d4e1e9;border-left:4px solid #7e9ac8;border-radius:14px;overflow:hidden;background:#ffffff78;padding:18px 20px;margin-bottom:10px;min-height:126px}.lesson>*:not(.lesson-fill){position:relative;z-index:1}.lesson-fill{position:absolute;z-index:0;inset:0 auto 0 0;background:linear-gradient(90deg,#a9e6d65c,#85d9c57d);width:0%;transition:width 1s linear;pointer-events:none}.lesson.current{border-color:#4dafa1;border-left-color:#138b7f;box-shadow:0 5px 20px #1379600c}.lesson.past{opacity:.68}.lesson.changed{border-left-color:#e9a632;background:#fff9e9b0}.lesson.cancelled{opacity:.6;border-left-color:#cb6881}.lesson.cancelled h3{text-decoration:line-through}.lesson-top{display:flex;align-items:center;gap:8px;justify-content:space-between;margin-bottom:10px}.lesson h3{margin:0 0 9px}.lesson-meta{display:flex;gap:16px;flex-wrap:wrap;color:#567080;font-size:.81rem}.lesson-meta .room-change{color:#915e00;font-weight:650}.lesson-foot{margin-top:12px;font-size:.77rem;color:#087067;display:flex;justify-content:space-between}.break{margin:0 0 10px 73px;font-size:.75rem;color:var(--muted);padding:3px 12px;display:flex;gap:10px;align-items:center}.break:before{content:'';height:1px;width:20px;background:#b0c5d0}.aside-stack{display:grid;align-content:start;gap:18px}.aside-stack .panel{padding:21px}.aside-stack h3{margin-bottom:10px}.aside-stack p{font-size:.88rem;color:var(--muted)}.aside-item{padding:17px 0;border-top:1px solid var(--line)}.aside-item strong{font-size:.9rem;display:block;margin:8px 0}.aside-item small{font-size:.75rem}.empty{text-align:center;padding:44px 20px;color:var(--muted);border:1px dashed #b7cbd5;border-radius:16px}.empty strong{color:var(--ink);display:block;font-size:1.1rem;margin-bottom:5px}footer{padding:28px 0 18px;font-size:.73rem;color:#6b8293;display:flex;justify-content:space-between}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.note-card{min-height:230px;display:flex;flex-direction:column;gap:10px}.note-card h3{margin:5px 0 0}.note-card p{color:var(--muted);font-size:.87rem;white-space:pre-wrap;overflow-wrap:anywhere}.note-card .card-actions{margin-top:auto}.card-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.card-actions button,.card-actions a{font-size:.8rem;padding:7px 10px}.file-card audio,.file-card video{width:100%;margin:12px 0;max-height:200px}.file-icon{font-size:2rem;color:#4b8c9b}.notice-card{margin-bottom:15px}.notice-card p{white-space:pre-wrap;overflow-wrap:anywhere;margin:14px 0}.admin-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}.admin-tabs button.selected{background:#183d55;color:#fff}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;font-size:.88rem}th,td{text-align:left;padding:14px 10px;border-bottom:1px solid var(--line);white-space:nowrap}th{font-size:.74rem;color:var(--muted);font-weight:600}td button{padding:6px 9px;font-size:.78rem}label{display:grid;gap:6px;font-size:.84rem;font-weight:600;margin-bottom:16px}input,textarea,select{width:100%;border:1px solid #c3d4df;background:#ffffffb8;color:var(--ink);border-radius:10px;padding:11px 12px;min-width:0}textarea{resize:vertical;min-height:100px}input[type=checkbox]{width:auto;accent-color:#168d7d}input[type=color]{width:44px;padding:4px;height:42px}.check{display:flex;gap:10px;align-items:center;font-weight:400}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}.form-grid .wide{grid-column:1/-1}.form-actions{display:flex;gap:10px;justify-content:flex-end}.error{color:#a3223e;white-space:pre-wrap;font-size:.9rem}dialog{width:min(640px,calc(100% - 28px));border:1px solid #fff;background:#f2f7f9f5;border-radius:24px;padding:26px;box-shadow:0 30px 100px #14395355;color:var(--ink);max-height:90dvh}dialog::backdrop{background:#14304466;backdrop-filter:blur(7px)}.dialog-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.dialog-heading h2{margin:0}.dialog-heading button{padding:4px 12px;font-size:1.5rem;border:0;background:none}#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);z-index:100;background:#173d54;color:#fff;border-radius:14px;padding:13px 22px;box-shadow:0 12px 40px #10293840;max-width:90vw}#toast.error{background:#a22c42}.loading{min-height:100vh;display:grid;place-items:center;color:var(--muted)}.auth-wrap{max-width:1260px;margin:auto;min-height:100vh;display:grid;grid-template-columns:1.2fr 1fr;gap:100px;padding:55px 50px;align-items:center}.auth-story{align-self:stretch;display:flex;flex-direction:column;justify-content:space-between;gap:40px}.auth-story h1{font-size:3.65rem;margin:20px 0}.auth-story p{color:var(--muted)}.auth-card{border-radius:30px;padding:42px}.auth-card h2{font-size:1.9rem;margin:22px 0 8px}.auth-card>p{color:var(--muted);font-size:.9rem}.auth-card form{margin-top:28px}.auth-card .primary{width:100%}.story-card{border-radius:22px;padding:24px;max-width:350px;margin:32px 0}.story-card h2{font-size:1.1rem}.story-card p{font-size:.9rem;margin-bottom:20px}.mini-progress{height:6px;border-radius:6px;background:linear-gradient(90deg,#379d92 65%,#d2e2e8 65%)}.editor-head{display:flex;align-items:center;gap:10px;margin-bottom:18px;flex-wrap:wrap}.editor-title{flex:1;min-width:180px}.editor-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:18px}.editor-settings{padding:18px;align-self:start}.drawing-toolbar{display:flex;align-items:center;gap:6px;flex-wrap:wrap;padding:10px;border-radius:15px;margin-bottom:12px}.drawing-toolbar button{padding:8px 11px;font-size:.85rem}.drawing-toolbar button.selected{background:#173d54;color:#fff}.drawing-toolbar select{width:90px;padding:9px}.drawing-toolbar label{margin:0}.paper-scroll{max-height:75vh;overflow:auto;overscroll-behavior:contain;border-radius:12px;background:#d2dfe5;padding:14px}.paper{position:relative;width:100%;aspect-ratio:5/7;background-color:white;background-image:radial-gradient(#b5cbd9 1px,transparent 1px);background-size:20px 20px;box-shadow:0 2px 10px #15344922}.paper canvas{width:100%;height:100%;display:block;touch-action:none}.page-controls{display:flex;align-items:center;gap:8px;margin:14px 0}.page-controls button{padding:7px 12px}.save-status{font-size:.8rem;color:var(--muted)}.editor-settings textarea{min-height:180px;font-weight:400}.readonly .paper canvas{touch-action:pan-y}.file-drop{padding:25px;border:1px dashed #8caebe;border-radius:15px;background:#fff8;margin:15px 0}
@media(min-width:1500px){main{padding-left:60px;padding-right:60px}}@media(max-width:1150px){.app{grid-template-columns:210px 1fr}.sidebar{padding:28px 15px}main{padding:22px}.schedule-layout{grid-template-columns:1fr}.aside-stack{grid-template-columns:1fr 1fr}.cards{grid-template-columns:1fr 1fr}.stats{gap:10px}.stat{padding:18px}.auth-wrap{gap:40px}.auth-story h1{font-size:3rem}}@media(max-width:760px){.app{display:block}.sidebar{position:sticky;top:0;z-index:20;width:100%;height:auto;border-radius:0;padding:12px 16px;gap:8px;background:#edf5f7e6}.sidebar .brand{font-size:1.15rem}.sidebar .brand img{width:30px;height:30px}.sidebar-sub,.sidebar-bottom{display:none}nav{display:flex;overflow:auto;gap:5px}nav [data-route]{white-space:nowrap;font-size:.78rem;padding:9px 11px;gap:6px;width:auto}nav [data-route] span{font-size:1rem;width:16px}main{padding:19px 16px 0}.topbar{margin-bottom:15px}.topbar .eyebrow{font-size:.61rem}.clock{font-size:.78rem}.clock .muted{display:none}.notice{padding:11px 12px;font-size:.79rem;align-items:start;gap:8px}.notice a{font-size:.72rem}.page-heading{margin:25px 0 20px;align-items:start;flex-wrap:wrap}h1{font-size:1.8rem}.page-heading p{font-size:.88rem}.stats{grid-template-columns:1fr 1fr}.stat.feature{grid-column:1/-1;min-height:120px}.stat{min-height:105px;padding:16px}.stat strong{font-size:1.35rem}.stat .eyebrow{font-size:.66rem}.stat p{font-size:.77rem}.panel{padding:16px;border-radius:18px}.section-heading{flex-wrap:wrap;gap:12px}.section-heading h2{font-size:1.1rem}.lesson-row{grid-template-columns:43px 1fr;gap:10px}.time-label{font-size:.76rem}.lesson{padding:15px 13px}.lesson h3{font-size:1rem}.lesson-meta{gap:8px;font-size:.77rem}.break{margin-left:53px}.lesson-top{gap:5px;flex-wrap:wrap}.lesson-top .badge{font-size:.67rem}.lesson-foot{font-size:.72rem}.aside-stack,.cards{grid-template-columns:1fr}.auth-wrap{grid-template-columns:1fr;padding:25px 18px;gap:24px;min-height:100vh}.auth-story>div:nth-child(2),.auth-story>small{display:none}.auth-card{padding:28px 24px;align-self:start}.auth-story{gap:0}.editor-layout{grid-template-columns:1fr}.editor-settings{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}.editor-settings label:last-of-type{grid-column:1/-1}.editor-settings textarea{min-height:100px}.paper-scroll{padding:6px}.drawing-toolbar{gap:5px}.drawing-toolbar button{padding:8px}.form-grid{grid-template-columns:1fr}.form-grid .wide{grid-column:auto}footer{font-size:.65rem}.heading-actions select{max-width:160px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important;animation:none!important;scroll-behavior:auto!important}}
#mobile-account{display:none}@media(max-width:760px){#mobile-account{display:block;padding:3px 0}}
.secret{margin:12px 0;padding:14px;border-radius:14px;background:#18314a14;white-space:pre-wrap;overflow-wrap:anywhere;user-select:all;font-family:ui-monospace,Consolas,monospace;font-size:.95rem}

.lecturer-chip{position:relative;display:inline-flex;align-items:center;font-weight:650;color:#244f69;cursor:help;border-bottom:1px dotted #7895a7}.lecturer-popover{display:none;position:absolute;z-index:50;left:0;bottom:calc(100% + 10px);width:220px;padding:14px;border-radius:16px;background:#f8fbfced;border:1px solid #fff;box-shadow:0 18px 50px #173d5433;backdrop-filter:blur(18px);text-align:center;color:var(--ink)}.lecturer-chip:hover .lecturer-popover,.lecturer-chip:focus .lecturer-popover,.lecturer-chip:focus-within .lecturer-popover{display:grid;gap:7px}.lecturer-popover img,.lecturer-avatar{width:86px;height:86px;border-radius:50%;object-fit:cover;margin:auto;background:#d8e7eb;display:grid;place-items:center;font-size:1.25rem;font-weight:800}.lecturer-popover small{white-space:normal}.lesson{overflow:visible}

/* Security/preview hardening */
#admin-link[hidden]{display:none!important}

.nav-brand{border:0;background:transparent;padding:0;justify-content:flex-start;text-align:left;width:auto}.nav-brand:hover{background:transparent;transform:none}.nav-brand.active{background:transparent!important;color:inherit!important;box-shadow:none!important}

.sync-status{border-radius:14px;padding:12px 16px;margin-bottom:16px;display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap;font-size:.8rem}.sync-status small{font-size:.75rem}.lesson.changed.current{border-color:#e9a632;border-left-color:#d28b12}.lesson.changed .lesson-fill{background:linear-gradient(90deg,#f4ce7959,#efb8497d)}.lesson.cancelled{background:#ffe9ef9c}