:root{--bg:#0f1720;--card:#0b1220;--muted:#9ca3af;--accent:#7c3aed}*{box-sizing:border-box}body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial;background:linear-gradient(180deg,#071029,#071a2b);color:#e6eef8;margin:0;padding:20px}.container{max-width:1100px;margin:0 auto}header h1{margin:0;font-size:28px}.muted{color:var(--muted);margin-top:6px}.card{background:#ffffff08;padding:16px;border-radius:12px;margin:16px 0}.form textarea{width:100%;min-height:120px;padding:10px;border-radius:8px;border:none;background:#ffffff05;color:inherit}.form label{display:block;margin-bottom:8px}.row{display:flex;gap:12px;align-items:center;margin-top:8px}.row label{flex:1}input[type=number]{width:100%;padding:8px;border-radius:8px;border:none;background:#ffffff05;color:inherit}.actions{display:flex;gap:8px;margin-top:12px}button{padding:10px 14px;border-radius:8px;border:none;background:#ffffff0f;color:inherit;cursor:pointer}button.primary{background:linear-gradient(90deg,var(--accent),#4f46e5);font-weight:600}.error{color:#ffb4b4;margin-top:8px}.result .placeholder{color:var(--muted);padding:32px;text-align:center}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin-top:12px}.day{background:linear-gradient(180deg,#ffffff05,#ffffff03);padding:12px;border-radius:10px}.session{padding:8px;border-radius:8px;background:#ffffff05;margin-bottom:8px}.session-head{display:flex;justify-content:space-between;align-items:center}.badge{background:#ffffff0f;padding:4px 8px;border-radius:999px;font-size:12px}.session-notes{color:var(--muted);margin-top:6px;font-size:14px}footer{color:var(--muted);text-align:center;margin-top:18px}@media (max-width:640px){.row{flex-direction:column}}