*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0f0f13;--surface: #18181f;--card: #1e1e27;--border: #2a2a36;--fg: #e8e8f0;--muted: #8888a0;--accent: #22c55e;--accent-dim: #16a34a;--danger: #ef4444;--danger-dim: #b91c1c;--warning: #f59e0b;--radius: 10px;--font: system-ui, -apple-system, sans-serif}body{background:var(--bg);color:var(--fg);font-family:var(--font);font-size:15px;line-height:1.5;min-height:100dvh}.app{display:flex;flex-direction:column;min-height:100dvh}.header{position:sticky;top:0;z-index:10;background:var(--surface);border-bottom:1px solid var(--border);padding:12px 16px;display:flex;flex-wrap:wrap;align-items:center;gap:12px}.header-logo{font-weight:700;font-size:1rem;white-space:nowrap}.tabs{display:flex;gap:4px;flex-wrap:wrap}.tab{padding:6px 14px;border-radius:8px;border:1px solid var(--border);background:transparent;color:var(--muted);font-size:.9rem;cursor:pointer;transition:background .15s,color .15s}.tab:hover{background:var(--card);color:var(--fg)}.tab-active{background:var(--card);color:var(--fg);border-color:var(--accent)}.btn-logout{margin-left:auto;font-size:.8rem;min-height:32px;padding:4px 12px}.main{flex:1;padding:20px 16px;max-width:860px;width:100%;margin:0 auto}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;margin-bottom:10px}.card-header{display:flex;align-items:center;justify-content:space-between;gap:8px;cursor:pointer;-webkit-user-select:none;user-select:none}.card-title{font-weight:600;font-size:.95rem;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.card-meta{font-size:.8rem;color:var(--muted);flex-shrink:0}.card-chevron{color:var(--muted);font-size:.8rem;flex-shrink:0;transition:transform .2s}.card-chevron.open{transform:rotate(180deg)}.form{display:flex;flex-direction:column;gap:10px;margin-top:14px;padding-top:14px;border-top:1px solid var(--border)}.field{display:flex;flex-direction:column;gap:4px}.field label{font-size:.8rem;color:var(--muted);font-weight:500}.field input,.field textarea{background:var(--surface);border:1px solid var(--border);border-radius:8px;color:var(--fg);font-size:.9rem;padding:8px 10px;font-family:var(--font);width:100%}.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent)}.field textarea{resize:vertical;min-height:70px}.checkboxes{display:flex;flex-wrap:wrap;gap:8px}.checkbox-label{display:flex;align-items:center;gap:6px;font-size:.85rem;cursor:pointer;background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:4px 10px}.checkbox-label input[type=checkbox]{accent-color:var(--accent);width:14px;height:14px}.btn-row{display:flex;gap:8px;flex-wrap:wrap;align-items:stretch;margin-top:4px}.btn-row .btn{flex:0 1 auto;min-width:0}.btn{display:inline-flex;align-items:center;justify-content:center;box-sizing:border-box;min-height:40px;padding:8px 16px;border-radius:8px;border:none;font-size:.875rem;font-weight:500;font-family:inherit;line-height:1.2;cursor:pointer;transition:opacity .15s;-webkit-tap-highlight-color:transparent}.btn:disabled{opacity:.5;cursor:default}.btn-primary{background:var(--accent);color:#052e16}.btn-primary:hover:not(:disabled){background:var(--accent-dim)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover:not(:disabled){background:var(--danger-dim)}.btn-secondary{background:var(--surface);color:var(--fg);border:1px solid var(--border)}.btn-secondary:hover:not(:disabled){background:var(--card)}.section-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;flex-wrap:wrap;gap:8px}.section-title{font-size:1.1rem;font-weight:700}.badge{display:inline-block;padding:2px 8px;border-radius:20px;font-size:.75rem;font-weight:600}.badge-scheduled{background:#1e3a5f;color:#93c5fd}.badge-ready{background:#14532d;color:#86efac}.badge-completed{background:#27272a;color:#a1a1aa}.badge-missed{background:#450a0a;color:#fca5a5}.badge-NOT_STARTED{background:#27272a;color:#a1a1aa}.badge-IN_PROGRESS{background:#14532d;color:#86efac}.badge-COMPLETED{background:#1e3a5f;color:#93c5fd}.lesson-row{display:flex;align-items:center;gap:10px;padding:8px 0;border-bottom:1px solid var(--border);font-size:.85rem}.lesson-row:last-child{border-bottom:none}.lesson-row-title{flex:1}.lesson-row-time{color:var(--muted);white-space:nowrap}.nested{margin:10px 0 0;padding-left:8px;border-left:2px solid var(--border)}.login-gate{display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;padding:60px 20px}.login-title{font-size:1.2rem;font-weight:700}.login-widget{margin:10px 0;min-height:50px;display:flex;align-items:center;justify-content:center}.muted{color:var(--muted);font-size:.85rem}.error{color:var(--danger);font-size:.85rem}.empty{color:var(--muted);text-align:center;padding:32px 0}.spinner{color:var(--muted);text-align:center;padding:40px 0}