:root{--ink:#000000;--paper:#ffffff;--muted:#6b6b6b;--line:#e6e6e6;--line-strong:#111111;--accent:#000000;--error:#b00020;--radius:12px;--maxw:620px}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;line-height:1.5}.page{max-width:var(--maxw);margin:0 auto;padding:48px 20px 80px}.brand{font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink)}.brand,h1{font-weight:700}h1{font-size:26px;line-height:1.2;margin:20px 0 6px}.lede{color:var(--muted);margin:0 0 28px;font-size:15px}.day{border-top:1px solid var(--line);padding:18px 0 4px}.day-label{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:0 0 12px}.slots{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));grid-gap:10px;gap:10px;margin-bottom:18px}.slot{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid var(--line-strong);background:var(--paper);color:var(--ink);padding:12px 8px;border-radius:var(--radius);font-size:15px;font-weight:600;cursor:pointer;transition:background .12s ease,color .12s ease}.slot:hover{background:#f4f4f4}.slot.selected{background:var(--accent);color:var(--paper)}.form{display:grid;grid-gap:14px;gap:14px;margin-top:8px}.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px}.field input,.field select{width:100%;padding:12px 14px;border:1px solid var(--line-strong);border-radius:var(--radius);font-size:16px;background:var(--paper);color:var(--ink);-webkit-appearance:none;-moz-appearance:none;appearance:none}.field input:focus,.field select:focus{outline:2px solid var(--ink);outline-offset:1px}.summary{border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:20px;background:#fafafa}.summary .when{font-size:18px;font-weight:700}.summary .meta{color:var(--muted);font-size:14px;margin-top:2px}.btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;border:none;background:var(--accent);color:var(--paper);padding:15px 18px;border-radius:var(--radius);font-size:16px;font-weight:700;cursor:pointer}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-secondary{background:transparent;color:var(--ink);border:1px solid var(--line-strong);margin-top:10px}.notice{padding:14px 16px;border-radius:var(--radius);font-size:14px;margin:16px 0}.notice.error{border:1px solid var(--error);color:var(--error);background:#fff5f6}.notice.info{border:1px solid var(--line);color:var(--ink);background:#fafafa}.center{padding:40px 0;color:var(--muted)}.center,.success{text-align:center}.success{padding:24px 0}.success .tick{width:56px;height:56px;border-radius:50%;background:var(--ink);color:var(--paper);display:inline-flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:16px}.spinner{width:22px;height:22px;border:2px solid var(--line);border-top-color:var(--ink);border-radius:50%;display:inline-block;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}