select,textarea{font:inherit;width:100%;border:1px solid var(--border);background:var(--bg);color:var(--text);border-radius:9px;padding:11px 13px}textarea{resize:vertical}select:focus,textarea:focus{outline:2px solid #82b5ff;outline-offset:2px}
[hidden]{display:none!important}.actions,.dialog-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.secondary{background:var(--soft);color:var(--blue)}.secondary:hover{background:var(--border)}.danger{background:#c44150;color:#fff}.danger:hover{background:#a92e3c}.danger-link{display:block;color:#c44150;margin-top:25px}.room-layout{display:grid;grid-template-columns:1.5fr 1fr;gap:24px;align-items:start}.room-grid,.student-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}.room-card{display:block;color:var(--text);transition:transform .18s,box-shadow .18s}.room-card:hover{text-decoration:none;transform:translateY(-2px);box-shadow:0 10px 30px #2878e812}.room-dot{display:inline-block;background:var(--room-color,var(--blue));width:14px;height:14px;border-radius:5px;flex-shrink:0}.room-card h2{margin:15px 0 5px;overflow-wrap:anywhere}.room-card p{font-size:13px}.room-open{display:block;margin-top:25px;color:var(--blue);font-size:13px}.room-form>p{font-size:13px;margin:8px 0 25px}.field input[type=checkbox]{width:18px;height:18px;min-height:18px;accent-color:var(--blue)}.code-cells{display:flex;gap:5px;margin:20px 0}.code-cells input{width:calc((100% - 30px)/7);min-width:0;padding:8px 0;text-align:center;font-size:21px;border-radius:12px;aspect-ratio:.85}.invitation-code{font-size:35px;letter-spacing:5px;color:var(--blue);font-weight:700;margin-top:10px}hr{border:0;border-top:1px solid var(--border);margin:24px 0}.member{display:flex;align-items:center;gap:12px;margin-top:18px;font-size:14px}.member a{margin-left:auto;font-size:12px}.tags{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:20px}.search-bar{display:flex;gap:12px;max-width:550px;margin-bottom:25px}.student-grid>section .profile-intro{margin-bottom:15px}.student-grid h2{font-size:18px;overflow-wrap:anywhere}.mini-room{display:flex;gap:12px;align-items:center;padding:20px 0;border-bottom:1px solid var(--border);color:var(--text);overflow-wrap:anywhere}.mini-room>span:last-child{margin-left:auto;color:var(--blue)}.lesson-row{display:flex;gap:25px;align-items:center;padding:20px 0;border-bottom:1px solid var(--border)}.lesson-row>strong{color:var(--blue)}.lesson-row small{display:block;font-size:11px}.lesson-row h3{font-size:14px}.lesson-row p{font-size:12px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
dialog{background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:18px;box-shadow:0 25px 100px #0004;width:min(580px,94vw);padding:26px;max-height:90dvh}dialog::backdrop{background:#101d3466;backdrop-filter:blur(3px)}.dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:22px}fieldset{border:0;padding:0;margin:0;min-width:0}.time-fields{display:grid;grid-template-columns:1fr 1fr;gap:15px}.dialog-actions{justify-content:flex-end;position:sticky;bottom:-26px;padding:15px 0;background:var(--surface);border-top:1px solid var(--border)}.participant-options{max-height:170px;overflow:auto;background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:12px;font-size:13px}.participant-options label{display:flex;align-items:center;gap:9px;padding:4px}.participant-options input[type=checkbox]{width:17px;height:17px;min-height:0;accent-color:var(--blue)}.calendar-filters{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:25px}.calendar-filters select{width:auto;max-width:260px}.calendar-panel{padding:24px}.fc{--fc-border-color:var(--border);--fc-page-bg-color:var(--surface);--fc-neutral-bg-color:var(--bg);--fc-list-event-hover-bg-color:var(--soft);--fc-today-bg-color:#2878e809;--fc-button-bg-color:#2878e8;--fc-button-border-color:#2878e8;--fc-button-hover-bg-color:#216bd3;--fc-button-hover-border-color:#216bd3;--fc-button-active-bg-color:#195bb5;--fc-button-active-border-color:#195bb5;font-size:12px}.fc .fc-toolbar-title{font-size:21px;color:var(--text);font-weight:600}.fc .fc-button{border-radius:8px;font-size:12px;padding:8px 12px;box-shadow:none}.fc .fc-col-header-cell-cushion{color:var(--muted);font-weight:600;padding:12px 4px}.fc .fc-timegrid-slot{height:24px}.fc .fc-timegrid-slot-label-cushion{color:var(--muted)}.fc .fc-event{border-radius:5px;padding:2px;cursor:pointer}.fc .fc-timegrid-event .fc-event-main{overflow:hidden}.availability{border-style:dashed!important;opacity:.85}.fc a{color:var(--text)}.fc .fc-daygrid-day-number{padding:8px}.fc .fc-scrollgrid{border-radius:10px;overflow:hidden}.fc-event:focus-visible{outline:3px solid var(--blue)}.fc .fc-button:disabled{opacity:.5}.sidebar nav{flex-shrink:0}.sidebar{overflow-y:auto}.nav-link{font-size:13px}
@media(max-width:1100px){.room-layout{grid-template-columns:1fr}.room-form{max-width:650px}.fc .fc-toolbar{flex-wrap:wrap;gap:15px}}
@media(max-width:760px){.sidebar nav{overflow-x:auto;padding-bottom:5px;gap:5px}.nav-link{white-space:nowrap;flex-shrink:0}.page-heading{gap:15px;flex-wrap:wrap}.room-grid,.student-grid{grid-template-columns:1fr}.calendar-panel{padding:12px}.calendar-filters select{max-width:200px}.fc .fc-toolbar-title{font-size:17px}.fc .fc-toolbar{gap:10px}.fc .fc-button{font-size:11px;padding:7px 9px}.fc .fc-header-toolbar .fc-toolbar-chunk:nth-child(2){order:-1;width:100%}.invitation-code{font-size:30px}.time-fields{gap:10px}dialog{padding:20px}.dialog-actions{bottom:-20px}.member{flex-wrap:wrap}}
@media(prefers-reduced-motion:reduce){.room-card:hover{transform:none}}