*{box-sizing:border-box}body{color:#1f2933;background:#f5f7fa;margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input,select,textarea{font:inherit}button{cursor:pointer;border:0}.splash{place-items:center;min-height:100vh;font-size:28px;font-weight:700;display:grid}.shell{grid-template-columns:224px 1fr;min-height:100vh;display:grid}.sidebar{background:#fff;border-right:1px solid #dbe3ea;flex-direction:column;gap:6px;height:100vh;padding:14px;display:flex;position:sticky;top:0}.brand{color:#0f6b7a;align-items:center;gap:9px;height:42px;margin-bottom:8px;font-size:18px;font-weight:800;display:flex}.nav{color:#52616f;text-align:left;background:0 0;border-radius:8px;align-items:center;gap:10px;height:38px;padding:0 10px;display:flex}.nav svg{width:17px;height:17px}.nav.active{color:#0b5563;background:#e8f5f7;font-weight:700}.logout{color:#9a3412;margin-top:auto}.content{min-width:0;padding:22px}.page-head{justify-content:space-between;align-items:center;margin-bottom:14px;display:flex}.page-head h1{letter-spacing:0;margin:0;font-size:24px;line-height:1.2}.page-head span{color:#6b7a89;font-size:14px}.filters{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:12px;display:flex}.search{background:#fff;border:1px solid #d9e1e8;border-radius:8px;align-items:center;gap:8px;min-width:260px;height:36px;padding:0 10px;display:flex}.search input{border:0;outline:0;width:100%}select,input,textarea{background:#fff;border:1px solid #d9e1e8;border-radius:8px;outline-color:#0f8599;min-height:36px;padding:7px 9px}textarea{resize:vertical;width:100%;min-height:110px;line-height:1.4}.table-wrap{background:#fff;border:1px solid #dbe3ea;border-radius:8px;overflow:auto}table{border-collapse:collapse;width:100%;min-width:980px}th,td{text-align:left;vertical-align:middle;border-bottom:1px solid #edf1f5;padding:9px 10px;font-size:13px}th{color:#52616f;background:#f9fbfc;font-weight:700;position:sticky;top:0}.messages-table td{white-space:nowrap}tbody tr:nth-child(2n){background:#fbfcfd}tbody tr.warn{background:#fff8d8}tbody tr.danger{background:#ffe9e9}tbody tr.inactive{color:#7a8794;background:#f1f3f5}tbody tr.inactive small{color:#8e99a5}small{color:#738391;font-size:12px}.channel-cell{white-space:nowrap}.direction-emoji{vertical-align:middle;background:#eef3f6;border-radius:999px;justify-content:center;align-items:center;width:24px;height:22px;margin-left:6px;font-size:14px;display:inline-flex}.actions{white-space:nowrap;text-align:right}.actions button{color:#50606f;vertical-align:middle;background:0 0;border-radius:7px;width:30px;height:30px}.actions svg{width:16px;height:16px}.actions button:hover{background:#edf4f7}.actions .confirm{color:#b45309;background:#fff1cc}.empty{text-align:center;color:#7a8794;padding:30px}.primary,.ghost{border-radius:8px;justify-content:center;align-items:center;gap:7px;min-height:36px;padding:0 12px;text-decoration:none;display:inline-flex}.primary{color:#fff;background:#087587;font-weight:700}.primary:disabled{opacity:.55;cursor:wait}.ghost{color:#294450;background:#eef3f6}.small{min-height:32px;padding:0 10px}.icon-button{color:#294450;background:#eef3f6;border-radius:8px;justify-content:center;align-items:center;width:34px;height:34px;display:inline-flex}.icon-button svg{width:17px;height:17px}.login-wrap{place-items:center;min-height:100vh;padding:20px;display:grid}.login{background:#fff;border:1px solid #dbe3ea;border-radius:10px;gap:13px;width:min(360px,100%);padding:22px;display:grid;box-shadow:0 18px 50px #24303d14}.login h1{margin:0 0 4px;font-size:24px}label{color:#41515f;gap:5px;font-size:13px;font-weight:700;display:grid}.check{align-items:center;gap:8px;min-height:36px;display:flex}.check input{min-height:0}.modal-backdrop{z-index:20;background:#1f293347;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.modal{background:#fff;border-radius:10px;gap:12px;width:min(520px,100%);max-height:90vh;padding:18px;display:grid;overflow:auto;box-shadow:0 24px 70px #1018282e}.modal.wide{width:min(920px,100%)}.modal h2{margin:0;font-size:20px}.modal-actions{justify-content:flex-end;gap:8px;display:flex}pre{background:#f6f8fa;border:1px solid #e1e8ee;border-radius:8px;padding:10px;font-size:12px;overflow:auto}.macros{background:#fff;border:1px solid #dbe3ea;border-radius:8px;margin-bottom:12px;padding:10px 12px}.template-grid,.admin-grid{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:12px;display:grid}.template,.panel,.send-box{background:#fff;border:1px solid #dbe3ea;border-radius:8px;gap:10px;padding:12px;display:grid}.template textarea{min-height:220px}.template-head{justify-content:space-between;align-items:center;gap:8px;display:flex}.template-actions{flex-wrap:wrap;gap:8px;display:flex}.template h3,.panel h3{margin:0;font-size:15px}.help-grid{gap:12px;max-width:980px;display:grid}.help-block{background:#fff;border:1px solid #dbe3ea;border-radius:8px;overflow:hidden}.help-block summary{color:#1f2933;cursor:pointer;justify-content:space-between;align-items:center;gap:12px;min-height:48px;padding:0 14px;font-size:15px;font-weight:800;list-style:none;display:flex}.help-block summary::-webkit-details-marker{display:none}.help-block summary:after{content:"+";color:#294450;background:#eef3f6;border-radius:999px;flex:none;justify-content:center;align-items:center;width:26px;height:26px;font-weight:800;display:inline-flex}.help-block[open] summary{border-bottom:1px solid #edf1f5}.help-block[open] summary:after{content:"-"}.help-content{color:#41515f;gap:10px;padding:12px 14px 14px;font-size:14px;line-height:1.5;display:grid}.help-content p{margin:0}.help-content ul{margin:0;padding-left:20px}.help-content li{margin:6px 0}.help-content b{color:#24303d}.time{width:112px;min-height:32px}.send-box textarea{min-height:150px}.send-controls{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.student-list{grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:8px;display:grid}.student{background:#fff;border:1px solid #dbe3ea;border-radius:8px;grid-template-columns:auto 1fr auto;align-items:center;padding:8px 10px;font-weight:500}.student input{min-height:auto}.chip{color:#0b5563;background:#e8f5f7;border-radius:999px;height:32px;padding:0 12px}.text-cell{white-space:nowrap;text-overflow:ellipsis;max-width:420px;overflow:hidden}.inline-label{align-items:center;gap:8px;min-height:36px;display:flex}.inline-label input{width:160px}.calendar-panel{background:#fff;border:1px solid #dbe3ea;border-radius:8px;margin-bottom:12px;padding:12px;overflow:auto}.calendar-head{align-items:center;gap:8px;margin-bottom:10px;display:flex}.calendar-head strong{text-transform:capitalize;min-width:180px;font-size:16px}.month-grid{grid-template-columns:repeat(7,minmax(86px,1fr));gap:6px;display:grid}.weekday{color:#738391;padding:0 4px;font-size:12px;font-weight:800}.day-cell{color:#1f2933;text-align:left;background:#fbfcfd;border:1px solid #dbe3ea;border-radius:8px;align-content:space-between;justify-items:start;gap:6px;min-height:84px;padding:8px;display:grid}.day-cell span{font-weight:800}.day-cell small{color:#0b5563;background:#e8f5f7;border-radius:999px;padding:2px 7px;font-weight:700}.day-cell small.has-lessons{color:#116332;background:#dff7e7}.day-cell em{color:#52616f;font-size:11px;font-style:normal;line-height:1.25}.day-cell.active{background:#e8f5f7;border-color:#0f8599;box-shadow:inset 0 0 0 1px #0f8599}.day-cell.muted{opacity:.42;cursor:default}.day-cell:disabled{cursor:default}.lesson-previews{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:12px;display:grid}.lesson-preview{background:#fff;border:1px solid #dbe3ea;border-radius:8px;align-content:start;gap:10px;padding:12px;display:grid}.lesson-preview-head{justify-content:space-between;align-items:flex-start;gap:10px;display:flex}.lesson-preview-head div{gap:2px;display:grid}.lesson-preview-head b{font-size:15px}.lesson-preview-head span{color:#294450;background:#eef3f6;border-radius:999px;flex:none;align-items:center;min-height:24px;padding:0 8px;font-size:12px;font-weight:700;display:inline-flex}.lesson-preview-meta{justify-items:end;gap:6px;display:grid}.status-badge.planned{color:#116332;background:#dff7e7}.status-badge.cancelled{color:#a16207;background:#fff3d6}.status-badge.completed{color:#29527a;background:#e7eef7}.message-preview{white-space:pre-wrap;background:#f9fbfc;border-color:#edf1f5;margin:0;font-size:13px;line-height:1.45}.students-cell{min-width:340px}.lesson-preview .students-cell{min-width:0}.student-chip{vertical-align:top;background:#f1f6f8;border:1px solid #dbe8ee;border-radius:8px;gap:2px;margin:2px 6px 2px 0;padding:5px 8px;display:inline-grid}.student-chip b{font-size:12px;font-weight:700}.student-bindings{gap:4px;margin-top:4px;display:grid}.student-binding{color:#41515f;background:#fff;border:1px solid #dbe3ea;border-radius:999px;align-items:center;width:fit-content;max-width:100%;min-height:22px;padding:0 7px;font-size:11px;line-height:1.2;display:inline-flex}.toast{color:#fff;z-index:30;border-radius:8px;max-width:min(440px,100vw - 36px);padding:12px 14px;position:fixed;bottom:18px;right:18px;box-shadow:0 14px 40px #10182833}.toast.ok{background:#087587}.toast.error{background:#b42318}.link-button{width:max-content}@media (width<=860px){.shell{grid-template-columns:1fr}.sidebar{border-bottom:1px solid #dbe3ea;border-right:0;flex-direction:row;height:auto;position:static;overflow:auto}.brand{min-width:92px;margin:0}.nav{white-space:nowrap}.logout{margin-top:0;margin-left:auto}.content{padding:14px}.search{min-width:100%}}