:root{--bg:#07111d;--panel:#0d1b2a;--panel2:#101f30;--line:#203247;--text:#edf4fb;--muted:#8292a7;--blue:#4f8cff;--green:#44d07b;--danger:#ff6868;--font:Manrope,system-ui,sans-serif}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 80% -10%,#173b58 0,transparent 32%),var(--bg);color:var(--text);font:14px/1.5 var(--font);min-height:100vh}button,input,textarea,select{font:inherit}.portal-header{height:68px;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 24px;background:#081522dd;position:sticky;top:0;z-index:5}.portal-brand{font-size:18px;font-weight:800}.portal-brand span{color:#6fa2ff}.portal-nav{display:flex;gap:8px;margin-left:30px}.portal-nav a{color:#9fb0c3;text-decoration:none;padding:8px 11px;border-radius:7px}.portal-nav a.active,.portal-nav a:hover{background:#17283a;color:#fff}.portal-user{margin-left:auto;color:var(--muted);font-size:12px}.portal-main{max-width:1440px;margin:auto;padding:20px}.portal-grid{display:grid;grid-template-columns:310px 1fr;gap:14px}.card{border:1px solid var(--line);border-radius:11px;background:linear-gradient(145deg,#0f2031,#0a1724);padding:16px}.card h2,.card h3{margin-top:0}.stack{display:flex;flex-direction:column;gap:10px}.row{display:flex;gap:10px;align-items:center}.row.wrap{flex-wrap:wrap}.field{display:flex;flex-direction:column;gap:5px;flex:1}.field label{font-size:11px;color:#90a2b6}.field input,.field textarea,.field select{border:1px solid #2b4057;background:#071521;color:#fff;border-radius:7px;padding:9px;outline:none}.field textarea{min-height:90px;resize:vertical}.field input:focus,.field textarea:focus{border-color:var(--blue)}.button{border:1px solid #35516d;background:#142b42;color:#fff;border-radius:7px;padding:8px 12px;cursor:pointer}.button.primary{background:#3978e7;border-color:#5b95fa}.button.success{background:#174b31;border-color:#2b7650}.button.danger{background:#3b2027;border-color:#70404b;color:#ffaaaa}.button:disabled{opacity:.5}.list{display:flex;flex-direction:column;gap:6px}.list button{border:1px solid transparent;background:transparent;color:#9eb0c3;border-radius:7px;padding:10px;text-align:left;cursor:pointer}.list button.active,.list button:hover{background:#172b40;border-color:#294158;color:#fff}.muted{color:var(--muted)}.status{padding:9px 12px;border-radius:8px;background:#102438;color:#9fb3c8}.status.ok{background:#123322;color:#76d99a}.status.error{background:#381e25;color:#ff9da7}.lesson-block{border:1px solid var(--line);border-radius:9px;padding:13px;background:#091824}.material{display:grid;grid-template-columns:1fr auto auto;gap:8px;align-items:center;padding:7px 0;border-bottom:1px solid #1b2c3e}.studio-grid{display:grid;grid-template-columns:minmax(500px,1fr) 330px;gap:14px}.stage{min-height:520px;background:#03090f;border:1px solid #25384b;border-radius:12px;position:relative;overflow:hidden;display:grid;place-items:center}.stage video{width:100%;height:100%;position:absolute;inset:0;object-fit:cover}.stage .placeholder{text-align:center;color:#65788d}.stage-badge{position:absolute;left:14px;top:14px;background:#e84f57;border-radius:5px;padding:4px 8px;font-size:10px;font-weight:800;z-index:2}.controls{display:flex;gap:8px;justify-content:center;margin-top:12px}.broadcast-item{padding:10px;border:1px solid var(--line);border-radius:8px}.hidden{display:none!important}@media(max-width:850px){.portal-grid,.studio-grid{grid-template-columns:1fr}.portal-header{padding:0 12px}.portal-nav{margin-left:12px}.portal-main{padding:10px}.stage{min-height:350px}}