:root{--accent-strong:#087f70;--accent-soft:#e4f5f0;--border:#dce5e5;--surface:#fff;--ink:#162b35;color:var(--ink);background:#f3f6f7;font-family:Arial,sans-serif}*{box-sizing:border-box}body{margin:0}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a,input,select{outline-offset:4px}.shell{grid-template-columns:250px minmax(0,1fr);min-height:100vh;display:grid}aside{color:#e8f4f2;background:#102a31;flex-direction:column;gap:40px;padding:32px 22px;display:flex}.brand{color:#21d2b2;align-items:center;gap:12px;font-size:42px;font-weight:800;display:flex}.brand span{color:#fff;font-size:13px;line-height:1.6}nav{gap:10px;display:grid}nav a{border-radius:8px;padding:12px}nav a:hover{background:#214149}.operator{overflow-wrap:anywhere;margin-top:auto}.operator p{color:#b3cdcd;font-size:12px}.workspace{min-width:0}.container{max-width:1250px;margin:auto;padding:44px 38px}.eyebrow{letter-spacing:2px;color:var(--accent-strong);font-size:11px;font-weight:700}h1{letter-spacing:-1px;font-size:32px}h2{font-size:20px}p{font-size:14px;line-height:1.7}.account-grid,.admin-users{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;margin:28px 0;display:grid}.account-panel{border:1px solid var(--border);background:var(--surface);border-radius:14px;min-width:0;padding:26px}.account-panel p{overflow-wrap:anywhere}.account-form{gap:20px;display:grid}.account-form label{gap:9px;font-size:13px;font-weight:600;display:grid}.account-form input,.account-form select{border:1px solid var(--border);background:var(--surface);width:100%;min-width:0;color:var(--ink);border-radius:8px;padding:12px}.button{cursor:pointer;border:0;border-radius:9px;padding:12px 18px;font-weight:600}.button-primary{background:var(--accent-strong);color:#fff}.button-secondary{background:var(--accent-soft);color:var(--accent-strong)}button:disabled{opacity:.6;cursor:wait}.roles-form fieldset{border:0;margin:18px 0;padding:0}.roles-form legend{font-size:12px;font-weight:600}.roles-form label{align-items:center;gap:10px;margin:12px 0;display:flex}.roles-form input{width:18px;height:18px;accent-color:var(--accent-strong)}.form-error{color:#ad2836}.form-success{color:#087f70}.text-link{color:var(--accent-strong);font-weight:600}.pagination{gap:22px;display:flex}.login-page{place-items:center;min-height:100vh;padding:24px;display:grid}.login-page>section{width:100%;max-width:460px}.skip-link{position:absolute;top:-100px;left:20px}.skip-link:focus{z-index:10;background:#fff;padding:12px;top:10px}@media (max-width:800px){.shell{grid-template-columns:1fr}aside{gap:18px;padding:20px}.brand{font-size:30px}nav{flex-wrap:wrap;gap:4px;display:flex}nav a{padding:8px;font-size:12px}.operator{flex-wrap:wrap;align-items:center;gap:14px;display:flex}.operator p{margin:0}.container{padding:28px 20px}.account-grid,.admin-users{grid-template-columns:1fr}h1{font-size:27px}}
.toolbar{flex-wrap:wrap;gap:12px;margin:16px 0;display:flex}.editor-fields{border:1px solid var(--border);border-radius:12px;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;min-width:0;padding:24px;display:grid}.editor-fields>fieldset,.editor-fields>section{grid-column:1/-1}.editor-fields legend{font-size:14px;font-weight:700}.account-form textarea{font:inherit;resize:vertical;border:1px solid var(--border);width:100%;min-height:110px;color:var(--ink);background:var(--surface);border-radius:8px;padding:12px}.account-form .check-label{align-items:center;gap:10px;font-weight:400;display:flex}.check-label input{flex-shrink:0;width:18px;height:18px}.lesson{border-top:1px solid var(--border);gap:16px;padding:20px 0;display:grid}.account-form small{color:#526a76;font-weight:400}fieldset{border:1px solid var(--border);border-radius:8px;min-width:0}pre{font-size:13px;line-height:1.8}.thumbnail-previews{flex-wrap:wrap;gap:12px;margin-top:16px;display:flex}.thumbnail-previews img{object-fit:cover;border:1px solid var(--border);border-radius:8px;width:160px;height:100px}@media (max-width:800px){.editor-fields{grid-template-columns:1fr;padding:16px}}