html, body {
  max-width: 100%;
  overflow-x: hidden;
  overflow-x: clip;
}

:root {
  --bg: #f6f5f2;
  --card: #ffffff;
  --ink: #1c1c1e;
  --muted: #525257;
  --line: #e3e1db;
  --accent: #1c1c1e;
  --accent-ink: #ffffff;
  --danger: #b3261e;
  --ok: #1f7a4d;
  --radius: 12px;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

/* Everything below is scoped under .app */
.app { max-width: 480px; margin: 0 auto; padding: 16px 16px 48px; }
.app .header { padding: 8px 0 16px; }
.app .header h1 { margin: 0; font-size: 1.5rem; }
.app .sub { margin: 4px 0 0; color: var(--muted); }

.app .state { padding: 48px 8px; text-align: center; color: var(--muted); }
.app .state--error { color: var(--danger); }

/* Day picker: horizontal scroll chips */
.app .days {
  display: flex; gap: 8px; padding-bottom: 8px;
  overflow-x: auto; scroll-snap-type: x proximity; -webkit-overflow-scrolling: touch;
}
.app .day {
  flex: 0 0 auto; min-width: 68px; padding: 10px 8px;
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  background: var(--card); color: inherit; font: inherit;
  border: 1px solid var(--line); border-radius: var(--radius);
  text-transform: capitalize; cursor: pointer; scroll-snap-align: start;
}
.app .day small { color: var(--muted); }

/* Time slots */
.app .slots { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 12px 0 16px; }
.app .slot {
  min-height: 46px; background: var(--card); color: inherit; font: inherit;
  border: 1px solid var(--line); border-radius: var(--radius); cursor: pointer;
}
.app .day.active, .app .slot.active { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.app .day.active small { color: inherit; opacity: 0.8; }
.app .muted { grid-column: 1 / -1; margin: 8px 0; text-align: center; color: var(--muted); }

/* Form */
.app .form {
  display: grid; gap: 12px; padding: 16px;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
}
.app .summary { margin: 0; font-weight: 600; text-transform: capitalize; }
.app .form label { display: grid; gap: 6px; font-size: 0.9rem; font-weight: 600; }
.app .form input {
  width: 100%; padding: 12px; font: inherit; /* 16px avoids iOS zoom-on-focus */
  border: 1px solid var(--line); border-radius: 8px;
}
.app .form input:focus-visible, .app .btn:focus-visible, .app .slot:focus-visible, .app .day:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}
.app .msg-error { margin: 0; min-height: 1.2em; color: var(--danger); font-size: 0.9rem; }

/* Buttons (<button> and <a>) */
.app .btn {
  display: block; width: 100%; padding: 14px; text-align: center; text-decoration: none;
  background: var(--accent); color: var(--accent-ink); font: inherit; font-weight: 600;
  border: 1px solid var(--accent); border-radius: var(--radius); cursor: pointer;
}
.app .btn:disabled { opacity: 0.6; cursor: wait; }
.app .btn--ghost { background: transparent; color: var(--accent); }

/* Success screen */
.app .success { display: grid; gap: 12px; padding: 24px 0; text-align: center; }
.app .success h2 { margin: 0; }
.app .check {
  width: 64px; height: 64px; margin: 0 auto; border-radius: 50%;
  display: grid; place-items: center; background: var(--ok); color: #fff; font-size: 2rem;
}
.app .when { margin: 0; font-size: 1.1rem; font-weight: 600; text-transform: capitalize; }
.app .cancel {
  display: grid; gap: 10px; margin-top: 8px; padding: 16px; text-align: left;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
}
.app .cancel p { margin: 0; color: var(--muted); }
.app .link { color: var(--ink); font-size: 0.85rem; word-break: break-all; }

/* Loading state (Fix F5) */
.app .state.is-loading { display: grid; place-items: center; min-height: 180px; }
.app .state.is-loading::before {
  content: ''; display: block; width: 40px; height: 40px;
  border: 4px solid var(--line); border-top-color: var(--accent); border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Success message state: mirrors admin success feedback (Fix F2) */
.app .msg--ok { margin: 0 0 8px; min-height: 1.4em; color: var(--ok); font-size: 0.9rem; }

@media (min-width: 520px) {
  .app { padding-top: 32px; }
  .app .slots { grid-template-columns: repeat(4, 1fr); }
}