:root{--bg-color: #f3f4f6;--text-color: #1f2937;--primary-color: #4f46e5;--primary-hover: #4338ca}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-color);color:var(--text-color);margin:0;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh}.body-index h1{font-size:2.5rem;margin-bottom:2rem;color:#111827}.body-index ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:1rem;width:100%;max-width:350px}.body-index a{display:block;padding:1rem 1.5rem;text-align:center;text-decoration:none;font-size:1.1rem;font-weight:600;color:#fff;background-color:var(--primary-color);border-radius:8px;box-shadow:0 4px 6px -1px #0000001a;transition:all .2s ease-in-out}.body-index a:hover{background-color:var(--primary-hover);transform:translateY(-3px);box-shadow:0 10px 15px -3px #0000001a}.timer-container{display:flex;gap:12px;margin-bottom:32px;background-color:#fff;padding:20px;border-radius:12px;box-shadow:0 4px 6px -1px #0000001a}#datetime-picker{padding:10px 16px;font-size:1rem;color:#374151;border:1px solid #d1d5db;border-radius:8px;outline:none;width:250px;transition:border-color .2s ease-in-out}#datetime-picker:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px #4f46e533}#datetime-picker:disabled{background-color:var(--bg-color);color:#9ca3af;cursor:not-allowed}button[data-start]{padding:10px 24px;font-size:1rem;font-weight:600;color:#fff;background-color:var(--primary-color);border:none;border-radius:8px;cursor:pointer;transition:all .2s ease-in-out}button[data-start]:hover:not(:disabled){background-color:var(--primary-hover);transform:translateY(-1px)}button[data-start]:disabled{background-color:#a5b4fc;cursor:not-allowed}.timer{display:flex;gap:16px}.field{display:flex;flex-direction:column;align-items:center;justify-content:center;background-color:#fff;min-width:90px;padding:20px 15px;border-radius:12px;box-shadow:0 4px 6px -1px #0000001a}.value{font-size:3rem;font-weight:700;color:#111827;line-height:1;font-variant-numeric:tabular-nums}.label{font-size:.875rem;font-weight:600;text-transform:uppercase;color:#6b7280;margin-top:8px;letter-spacing:.05em}.form{display:flex;flex-direction:column;gap:20px;background-color:#fff;padding:32px;border-radius:12px;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f;width:100%;max-width:350px;margin:0 auto}.form label{display:flex;flex-direction:column;gap:8px;font-size:1rem;font-weight:500;color:#374151}.form input[type=number]{padding:10px 16px;font-size:1rem;color:#111827;border:1px solid #d1d5db;border-radius:8px;outline:none;transition:all .2s ease-in-out}.form input[type=number]:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px #4f46e533}.form fieldset{border:1px solid #d1d5db;border-radius:8px;padding:16px;display:flex;justify-content:space-around;margin:0}.form legend{font-weight:600;color:#374151;padding:0 8px}.form fieldset label{flex-direction:row;align-items:center;font-weight:400;cursor:pointer}.form input[type=radio]{width:16px;height:16px;cursor:pointer;accent-color:var(--primary-color)}.form button[type=submit]{padding:12px 24px;font-size:1rem;font-weight:600;color:#fff;background-color:var(--primary-color);border:none;border-radius:8px;cursor:pointer;transition:all .2s ease-in-out;margin-top:8px}.form button[type=submit]:hover{background-color:var(--primary-hover);transform:translateY(-2px);box-shadow:0 4px 6px -1px #4f46e54d}.form button[type=submit]:active{transform:translateY(0)}.back-link{display:flex;align-items:center;flex-direction:row;position:absolute;top:20px;left:20px;padding:8px 16px;font-size:.9rem;font-weight:600;color:var(--primary-color);background-color:#fff;text-decoration:none;border:1px solid #e5e7eb;border-radius:8px;box-shadow:0 1px 3px #0000001a;transition:all .2s ease-in-out}.back-link:hover{background-color:#f9fafb;color:var(--primary-hover);border-color:#d1d5db;transform:translate(-3px);box-shadow:0 4px 6px -1px #0000001a}