:root{--paper:#f5f4f0;--ink:#222923;--muted:#72766d;--line:#dddfd6;--green:#dce9c7;--accent:#719443}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:15px}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.5;cursor:wait}a{color:inherit}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid #93ad66;outline-offset:3px}[hidden]{display:none!important}.topbar{max-width:1440px;margin:auto;padding:24px 5%;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);gap:15px}.brand{display:flex;align-items:center;gap:13px;font-size:18px;font-weight:700;text-decoration:none}.brand-icon{display:grid;place-items:center;width:36px;height:36px;border-radius:9px;background:var(--ink);color:var(--green);font-size:26px}.brand-light{font-weight:400;color:var(--muted)}main{max-width:1300px;margin:auto;padding:0 36px}.intro{display:flex;justify-content:space-between;gap:40px;padding:56px 0 44px;align-items:center}.eyebrow{font-size:11px;letter-spacing:1.6px;font-weight:650;margin:0 0 18px;color:var(--muted)}h1{font-size:clamp(35px,4.2vw,58px);font-weight:550;letter-spacing:-2.4px;line-height:1.08;margin:0}.accent{color:var(--accent)}.subtitle{color:var(--muted);line-height:1.7;margin:20px 0 0}.intro-note{background:#e9eddf;border-radius:16px;padding:23px 26px;display:flex;flex-direction:column;gap:12px;font-size:13px;line-height:1.6;min-width:300px;transform:rotate(1deg)}.intro-note strong{font-size:19px;font-weight:550}.note-icon{font-size:30px;line-height:1}.timezone{border-top:1px solid #cfd6c3;padding-top:12px;color:#566445}.tabs{display:flex;gap:26px;border-bottom:1px solid var(--line);overflow-x:auto}.tab{border:0;background:none;padding:18px 0;white-space:nowrap;font-size:14px;color:var(--muted);border-bottom:2px solid transparent}.tab.active{border-color:var(--ink);font-weight:600;color:var(--ink)}.toolbar{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:28px 0 20px;flex-wrap:wrap}.week-nav{display:flex;align-items:center;gap:12px}.week-nav h2{font-size:18px;font-weight:550;margin:0;min-width:190px;text-align:center}.icon-button{width:34px;height:34px;border:1px solid var(--line);border-radius:8px;background:transparent}.text-button{border:0;background:transparent;color:var(--muted);font-size:13px}.filters{display:flex;gap:10px}.button{border:1px solid var(--line);background:transparent;padding:11px 17px;border-radius:8px;font-size:13px;font-weight:550;display:inline-flex;align-items:center;justify-content:center;text-decoration:none;gap:6px}.dark{background:var(--ink);border-color:var(--ink);color:#fff}.button:hover{filter:brightness(1.13)}select{background:transparent;border:1px solid var(--line);border-radius:8px;padding:10px 32px 10px 12px;color:var(--ink);max-width:260px}.legend{display:flex;gap:18px;align-items:center;font-size:11px;color:var(--muted);margin-bottom:18px;flex-wrap:wrap}.legend>span{display:flex;gap:7px;align-items:center}.dot{width:7px;height:7px;border-radius:50%;display:inline-block}.free{background:#7c9e50}.booked{background:#a6a99f}.mine{background:#536fa8}.legend .week-help{margin-left:auto}.calendar{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fafaf6}.day{border:0;border-right:1px solid var(--line);background:transparent;min-height:120px;padding:15px 13px;text-align:left;display:flex;flex-direction:column;align-items:flex-start;gap:10px;color:var(--ink)}.day:last-child{border-right:0}.day.selected{background:var(--green)}.day.today .day-number{border-bottom:2px solid #819d59}.day-name{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}.day-number{font-size:29px;line-height:1.1;letter-spacing:-1px}.day-total{font-size:11px;color:var(--muted);margin-top:auto}.day-markers{display:flex;gap:4px;min-height:7px}.day-heading{display:flex;justify-content:space-between;align-items:center;margin:30px 0 16px;gap:15px}.day-heading h2{font-size:20px;font-weight:550;margin:0;letter-spacing:-.5px}.day-heading>span{color:var(--muted);font-size:12px}.slots{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;min-height:170px}.slot{border:1px solid var(--line);border-radius:11px;background:#fcfcf8;padding:19px;display:flex;flex-direction:column;gap:13px;min-width:0}.slot.occupied{background:#eeeee8}.slot.is-mine{border-color:#9dacc8;background:#edf0f7}.slot-top{display:flex;align-items:center;justify-content:space-between;gap:5px}.slot-time{font-size:21px;letter-spacing:-.6px;font-weight:550;white-space:nowrap}.badge{font-size:10px;padding:5px 8px;border-radius:5px;background:#e3edd7;color:#4c6b2e;white-space:nowrap}.badge.gray{background:#e0e1da;color:#6f7467}.badge.blue{background:#dce4f5;color:#45608f}.teacher{display:flex;gap:10px;align-items:center;font-size:13px}.avatar{width:30px;height:30px;border-radius:50%;background:#e7e8de;display:grid;place-items:center;font-size:12px;flex-shrink:0}.slot .small{font-size:11px;margin:0}.slot-actions{display:flex;gap:8px;margin-top:auto;flex-wrap:wrap}.slot-actions .button{flex:1;padding:9px 10px;font-size:12px}.slot .detail{background:#fff9;padding:10px;border-radius:6px;font-size:12px;line-height:1.8;overflow-wrap:anywhere}.detail a{color:#4e6941}.empty{grid-column:1/-1;text-align:center;padding:35px 20px;background:#eeeee7;border:1px dashed #d5d8ca;border-radius:11px;color:var(--muted);font-size:14px;line-height:1.9}.empty strong{display:block;color:var(--ink);font-weight:500;font-size:18px;margin-bottom:6px}.admin-intro{max-width:660px;padding:25px 0 10px;line-height:1.7}.admin-intro h2{font-size:24px;font-weight:550;letter-spacing:-.5px}.admin-intro p{color:var(--muted)}.users{margin-top:22px}.user-row{padding:16px 0;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:15px}.user-info{display:flex;align-items:center;gap:12px}.user-info small{display:block;color:var(--muted);margin-top:5px}.user-row .button{min-width:160px}label{font-size:13px;display:flex;flex-direction:column;gap:8px;margin:17px 0}input{background:#fff;border:1px solid #d4d8cd;padding:12px;border-radius:7px;width:100%;min-width:0;color:var(--ink)}.search-label{max-width:440px}.muted{color:var(--muted)}.small{font-size:12px;line-height:1.7}.wide{width:100%;margin-top:8px}.form-row{display:flex;gap:14px}.form-row>*{flex:1;min-width:0}.form-error{font-size:13px;color:#a74435;line-height:1.5;min-height:1em}.summary{border:1px solid var(--line);border-radius:8px;padding:15px;line-height:1.9;font-size:14px}.code-box{padding:15px;border-radius:8px;background:#e9eddf;margin:20px 0;display:flex;justify-content:space-between;align-items:center}.code-box strong{font-size:21px;letter-spacing:3px}dialog{border:1px solid var(--line);border-radius:18px;padding:32px;width:460px;max-width:calc(100vw - 28px);color:var(--ink);background:var(--paper);box-shadow:0 25px 100px #17251233}dialog::backdrop{background:#22292377;backdrop-filter:blur(3px)}dialog h2{font-size:27px;letter-spacing:-.8px;font-weight:550;margin:0 0 20px}dialog>p{line-height:1.7;font-size:14px;color:var(--muted)}dialog .eyebrow{font-size:10px}.close{position:absolute;right:13px;top:10px;background:transparent;border:0;font-size:26px;color:var(--muted);padding:4px 8px}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--ink);color:#fff;padding:14px 22px;border-radius:10px;max-width:90vw;box-shadow:0 5px 25px #0003;z-index:20;line-height:1.5;font-size:14px}.toast.error{background:#903c30}footer{margin-top:50px;border-top:1px solid var(--line);padding:22px 0;display:flex;justify-content:space-between;font-size:11px;color:var(--muted);gap:20px}#account{display:flex;gap:12px;align-items:center;font-size:13px}#account .role{color:var(--muted);font-size:10px;display:block;margin-top:3px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(min-width:1500px){.intro{padding-top:65px;padding-bottom:55px}}@media(max-width:950px){.slots{grid-template-columns:repeat(2,minmax(0,1fr))}.intro-note{min-width:250px;padding:20px}.intro{gap:24px}.week-nav h2{min-width:170px}.week-help{display:none!important}}@media(max-width:650px){main{padding:0 18px}.topbar{padding:18px}.brand{font-size:15px;gap:8px}.brand-light{display:none}.topbar .button{padding:10px;font-size:11px}.intro{padding:32px 0 26px;display:block}h1{font-size:39px;letter-spacing:-1.8px}.subtitle{font-size:13px;margin-top:16px}.intro-note{display:none}.tabs{gap:21px}.tab{font-size:12px;padding:15px 0}.toolbar{padding:23px 0 16px;gap:15px}.week-nav{gap:8px;width:100%}.week-nav h2{flex:1;font-size:16px;min-width:0}.filters{width:100%}.filters select{flex:1;max-width:none;width:0;font-size:12px}.filters .button{font-size:11px;padding:10px}.legend{gap:11px;font-size:10px}.calendar{border-radius:9px}.day{min-height:105px;padding:10px 6px;gap:8px;align-items:center}.day-name{font-size:9px}.day-number{font-size:24px}.day-total{font-size:9px;text-align:center}.day-markers{gap:3px}.day-markers .dot{height:5px;width:5px}.day-heading{margin:25px 0 14px}.day-heading h2{font-size:18px}.day-heading>span{font-size:10px}.slots{grid-template-columns:1fr}.slot{padding:18px;gap:13px}.slot-time{font-size:23px}.slot-actions .button{padding:11px}footer{margin-top:32px;flex-direction:column;gap:8px}.user-info{font-size:12px}.user-row .button{font-size:10px;min-width:0;padding:9px}.user-info .avatar{display:none}dialog{padding:26px 22px}dialog h2{font-size:24px}#account{gap:7px}#account .text-button{font-size:11px}}