:root{--bg:#0f172a;--panel:#1e293b;--panel-2:#263449;--text:#e2e8f0;--muted:#94a3b8;--brand:#38bdf8;--brand-strong:#0ea5e9;--green:#22c55e;--red:#ef4444;--amber:#f59e0b;--border:#334155}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}a{color:var(--brand);text-decoration:none}button{font:inherit;cursor:pointer;border:none;border-radius:8px;padding:8px 14px;background:var(--brand-strong);color:#04222e;font-weight:600}button.secondary{background:var(--panel-2);color:var(--text);border:1px solid var(--border)}button.danger{background:var(--red);color:#fff}button:disabled{opacity:.5;cursor:not-allowed}input,select{font:inherit;padding:10px 12px;border-radius:8px;border:1px solid var(--border);background:var(--panel);color:var(--text);width:100%}label{display:block;font-size:13px;color:var(--muted);margin:12px 0 4px}.card{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:20px;margin-bottom:16px}.center{min-height:100vh;display:grid;place-items:center;padding:20px}.auth-box{width:100%;max-width:380px}table{width:100%;border-collapse:collapse}td,th{text-align:left;padding:10px;border-bottom:1px solid var(--border);font-size:14px}th{color:var(--muted);font-weight:600}.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:700}.badge.paid{background:rgba(34,197,94,.15);color:var(--green)}.badge.unpaid{background:rgba(239,68,68,.15);color:var(--red)}.badge.ignored{background:rgba(148,163,184,.18);color:var(--muted)}.shell{display:flex;min-height:100vh}.sidebar{width:230px;background:var(--panel);border-right:1px solid var(--border);padding:20px 14px;display:flex;flex-direction:column;gap:4px}.sidebar .nav-link{padding:10px 12px;border-radius:8px;color:var(--text);display:flex;justify-content:space-between}.sidebar .nav-link.active,.sidebar .nav-link:hover{background:var(--panel-2)}.content{flex:1 1;padding:28px 32px;max-width:1000px}.topline{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.muted{color:var(--muted)}.error{color:var(--red);font-size:14px}.success{color:var(--green);font-size:14px}.pill{background:var(--panel-2);border-radius:999px;padding:2px 10px;font-size:12px;color:var(--muted)}.row{display:flex;gap:10px;align-items:center}.stat{font-size:30px;font-weight:800}.grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));grid-gap:14px;gap:14px}.grid,.week{display:grid}.week{grid-template-columns:repeat(7,minmax(0,1fr));grid-gap:10px;gap:10px;align-items:start}.day{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:12px;min-height:96px}.day.today{border-color:var(--brand)}.day h3{margin:0 0 10px;font-size:14px;display:flex;justify-content:space-between;align-items:center;gap:6px}.session{background:var(--panel-2);border-left:3px solid var(--border);border-radius:8px;padding:8px 10px;margin-bottom:8px;font-size:13px;overflow-wrap:anywhere}.session:last-child{margin-bottom:0}.session.mine{border-left-color:var(--brand)}.session .time{font-weight:700;white-space:nowrap}.session .actions{display:flex;flex-wrap:wrap;gap:4px;margin-top:6px}.session button{padding:2px 7px;font-size:11px;white-space:nowrap;overflow-wrap:normal}.content:has(.week){max-width:1280px}@media (max-width:1180px){.week{grid-template-columns:repeat(auto-fit,minmax(190px,1fr))}}@media (max-width:720px){.week{grid-template-columns:1fr}.day{min-height:0}.shell{flex-direction:column}.sidebar{width:100%;flex-direction:row;overflow-x:auto}}