:root{--bg-top:#f9e9d2;--bg-bottom:#f6f0e5;--ink:#2f2520;--muted:#6b5b4d;--line:#d9c8b2;--panel:#fffcf7d9;--accent:#c76d2e;--accent-strong:#a85318;--ok:#2d8e4e;--danger:#bb3a2f}*{box-sizing:border-box}body{color:var(--ink);background:radial-gradient(circle at top right, #ffe9c8 0%, transparent 45%), radial-gradient(circle at bottom left, #f7dfc0 0%, transparent 42%), linear-gradient(180deg, var(--bg-top) 0%, var(--bg-bottom) 100%);min-height:100vh;margin:0;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}#app{min-height:100vh}.page{min-height:100vh;padding:20px}h1,h2,h3,p{margin:0}.muted{color:var(--muted)}.error{color:var(--danger);font-size:14px}.success{color:var(--ok);font-size:14px}.inline{margin:0 0 12px}input,select,textarea,button{font:inherit}button{background:var(--accent);color:#fff;cursor:pointer;border:0;border-radius:12px;padding:10px 14px}button:hover{background:var(--accent-strong)}button:disabled{opacity:.6;cursor:not-allowed}.ghost-btn{color:var(--ink);border:1px solid var(--line);background:#eee2d3}.ghost-btn:hover{background:#e5d5c1}input,select,textarea{border:1px solid var(--line);background:#fff;border-radius:10px;width:100%;padding:10px 12px}.auth-wrap{place-items:center;min-height:calc(100vh - 40px);display:grid}.auth-card{background:var(--panel);border:1px solid var(--line);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border-radius:20px;width:100%;max-width:520px;padding:26px;box-shadow:0 14px 34px #50341824}.auth-card h1{margin-bottom:8px}.auth-switch{grid-template-columns:1fr 1fr;gap:8px;margin:18px 0;display:grid}.auth-switch button{color:var(--ink);background:#ebdece}.auth-switch button.active{background:var(--accent);color:#fff}.auth-form{gap:10px;display:grid}.app-wrap{max-width:1380px;margin:0 auto}.topbar{background:var(--panel);border:1px solid var(--line);border-radius:18px;justify-content:space-between;align-items:center;gap:10px;margin-bottom:14px;padding:14px 16px;display:flex}.topbar-user{align-items:center;gap:12px;display:flex}.avatar-lg,.avatar-xl,.avatar-sm{object-fit:cover;border:1px solid var(--line);background:#fff;border-radius:50%}.avatar-lg{width:52px;height:52px}.avatar-xl{width:72px;height:72px}.avatar-sm{width:28px;height:28px}.profile-form-grid{grid-template-columns:220px 1fr;align-items:start;gap:14px;display:grid}.avatar-preview-box{border:1px dashed var(--line);background:#fff;border-radius:12px;place-items:center;gap:8px;padding:14px;display:grid}.top-actions{align-items:center;gap:10px;display:flex}.board{grid-template-columns:360px 1fr;gap:16px;display:grid}.board.single{grid-template-columns:1fr}.tabbar{flex-wrap:wrap;gap:8px;margin-bottom:14px;display:flex}.tab-link{color:var(--ink);border:1px solid var(--line);background:#efe3d4;border-radius:999px;padding:8px 14px;text-decoration:none}.tab-link.active{background:var(--accent);color:#fff}.panel{align-content:start;gap:14px;display:grid}.card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:14px;box-shadow:0 6px 18px #50341814}.card h3{margin-bottom:10px}.soft-divider{border:0;border-top:1px solid var(--line);margin:14px 0}.row{grid-template-columns:1fr auto;gap:8px;margin-top:10px;display:grid}.stack,.roadmap-list{gap:8px;display:grid}.roadmap-item{align-items:center;gap:8px;display:flex}.student-list{gap:10px;display:grid}.student-item{border:1px solid var(--line);background:#fff;border-radius:12px;grid-template-columns:1.4fr 120px 140px 1fr auto auto;align-items:center;gap:8px;padding:10px;display:grid}.danger-btn{background:#b84a34}.danger-btn:hover{background:#9e3925}.ok-btn{background:#2d8e4e}.ok-btn:hover{background:#21723d}.between{justify-content:space-between;align-items:center;gap:10px;display:flex}.grid-two{grid-template-columns:1fr 1fr;gap:14px;display:grid}.schedule-list{gap:8px;margin-top:10px;display:grid}.schedule-item{border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px}.row.two{grid-template-columns:1fr 1fr}.small{font-size:13px}.chat-card{grid-template-rows:auto auto 1fr auto;min-height:70vh;display:grid}.icon-strip{flex-wrap:wrap;gap:8px;margin-bottom:10px;display:flex}.icon-btn{min-width:45px;color:var(--ink);background:#f1e5d7;border-radius:999px}.message-list{border:1px solid var(--line);background:#fff;border-radius:14px;gap:8px;max-height:56vh;padding:10px;display:grid;overflow:auto}.message-item{border:1px solid #ecd8bf;border-radius:12px;padding:10px}.message-item header{justify-content:space-between;margin-bottom:4px;font-size:13px;display:flex}.chat-sender{align-items:center;gap:8px;display:flex}.message-item.task{background:#fff4e9;border-color:#c76d2e}.message-item.icon{background:#fff8ef}.message-text{white-space:pre-wrap}.chat-image{border-radius:10px;max-width:230px;margin-top:8px;display:block}.composer{gap:8px;margin-top:10px;display:grid}.composer-row{justify-content:space-between;align-items:center;gap:10px;display:flex}.task-toggle{align-items:center;gap:6px;font-size:14px;display:flex}.task-toggle input{width:auto}@media (width<=1080px){.board,.grid-two,.profile-form-grid{grid-template-columns:1fr}.chat-card{min-height:60vh}.message-list{max-height:45vh}}@media (width<=680px){.page{padding:10px}.topbar{flex-direction:column;align-items:flex-start}.top-actions{width:100%}.top-actions select,.top-actions button{flex:1}.student-item,.row{grid-template-columns:1fr}}