/* ==========================================================================
   vantora-booking — applicant booking pages (brief K1B)
   Tokens copied from /root/dev/vantora-kit/vantora.css (Vantora UI Kit v1.0,
   Apple-style light UI, #007AFF accent, brand gradient #4f46e5 -> #7c3aed).
   Mobile-first: single fluid column, >=44px touch targets throughout.
   ========================================================================== */

:root {
  /* surfaces */
  --v-bg: #ffffff;
  --v-pane: #fafafc;
  --v-sunken: #f5f5f7;
  --v-border: #ececf1;
  --v-border-strong: #d2d2d7;
  /* ink */
  --v-ink: #1d1d1f;
  --v-body: #4b5568;
  --v-muted: #86868b;
  --v-muted-2: #aeaeb2;
  /* functional */
  --v-accent: #007AFF;
  --v-accent-hover: #0066d6;
  --v-accent-soft: #e8f1fd;
  --v-danger: #ff3b30;
  --v-danger-soft: #ffeceb;
  --v-success: #34c759;
  --v-success-soft: #e9f9ee;
  --v-violet: #7c3aed;
  --v-violet-soft: #f5f3ff;
  /* brand */
  --v-brand-1: #4f46e5;
  --v-brand-2: #7c3aed;
  --v-brand-grad: linear-gradient(135deg, #4f46e5, #7c3aed);
  /* shape */
  --v-radius-s: 8px;
  --v-radius: 12px;
  --v-radius-l: 18px;
  --v-shadow-s: 0 1px 3px rgba(0,0,0,.06);
  --v-shadow-m: 0 4px 16px rgba(0,0,0,.08);
  --v-shadow-l: 0 12px 40px rgba(0,0,0,.14);
  --v-font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--v-font);
  color: var(--v-ink);
  background: var(--v-pane);
  -webkit-font-smoothing: antialiased;
}

/* ---------- shell (fluid, phone-first; caps at 540px on larger screens) ---------- */
.bk-head {
  background: var(--v-bg);
  border-bottom: 1px solid var(--v-border);
  padding: 12px 16px;
}
.bk-brand {
  display: flex; align-items: center; gap: 10px;
  max-width: 540px; margin: 0 auto;
}
.bk-logo {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 10px;
  background: var(--v-brand-grad);
  color: #fff; font-weight: 700; font-size: 17px; letter-spacing: -.02em;
  box-shadow: 0 4px 12px rgba(79,70,229,.35);
  user-select: none; flex-shrink: 0;
}
.bk-word { font-weight: 700; font-size: 17px; letter-spacing: -.02em; }
.bk-word-sub { color: var(--v-muted); font-weight: 500; }

.bk-main {
  width: 100%;
  max-width: 540px;
  margin: 0 auto;
  padding: 20px 16px 40px;
}
.bk-foot {
  text-align: center; color: var(--v-muted-2); font-size: 12px;
  padding: 20px 16px calc(20px + env(safe-area-inset-bottom));
}

/* ---------- type ---------- */
.bk-h1 { font-size: 21px; font-weight: 700; letter-spacing: -.02em; margin: 0 0 4px; }
.bk-sub { color: var(--v-muted); font-size: 13px; margin: 0 0 18px; }
.bk-muted { color: var(--v-muted); }
.bk-mono { font-family: "SF Mono", ui-monospace, Menlo, monospace; font-size: 12px; word-break: break-all; }
.bk-center { text-align: center; }

/* ---------- steps ---------- */
.bk-steps { display: flex; align-items: center; gap: 8px; margin-bottom: 18px; }
.bk-step {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 600; color: var(--v-muted);
}
.bk-step-dot {
  width: 28px; height: 28px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--v-sunken); border: 1.5px solid var(--v-border-strong);
  font-size: 12px; font-weight: 700; flex-shrink: 0;
}
.bk-step.active { color: var(--v-ink); }
.bk-step.active .bk-step-dot {
  background: var(--v-brand-grad); border-color: transparent; color: #fff;
  box-shadow: 0 3px 10px rgba(79,70,229,.35);
}
.bk-step-line { flex: 1; height: 1.5px; background: var(--v-border-strong); }

/* ---------- card ---------- */
.bk-card {
  background: #fff; border: 1px solid var(--v-border);
  border-radius: var(--v-radius-l); box-shadow: var(--v-shadow-m);
}
.bk-card-pad { padding: 24px 20px; }

/* ---------- buttons (all >=44px tall) ---------- */
.bk-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  font-family: var(--v-font); font-weight: 600; font-size: 15px;
  min-height: 44px; padding: 10px 18px;
  border-radius: 12px; border: 1px solid transparent; cursor: pointer;
  transition: all .15s; text-decoration: none; white-space: nowrap;
}
.bk-btn-brand {
  background: var(--v-brand-grad); color: #fff;
  box-shadow: 0 4px 14px rgba(79,70,229,.30);
}
.bk-btn-brand:hover { filter: brightness(1.06); }
.bk-btn-brand:disabled { filter: grayscale(.5); opacity: .6; cursor: not-allowed; }
.bk-btn-ghost { background: #fff; border-color: var(--v-border-strong); color: var(--v-ink); }
.bk-btn-ghost:hover { background: var(--v-sunken); }
.bk-btn-danger { background: var(--v-danger); color: #fff; }
.bk-btn-danger:hover { filter: brightness(.94); }
.bk-btn-danger:disabled { opacity: .6; cursor: not-allowed; }
.bk-btn-danger-ghost { background: #fff; border-color: var(--v-danger); color: var(--v-danger); }
.bk-btn-danger-ghost:hover { background: var(--v-danger-soft); }
.bk-btn-block { display: flex; width: 100%; margin-top: 10px; }
.bk-btn-lg { min-height: 52px; font-size: 16px; }

.bk-back {
  display: inline-flex; align-items: center; min-height: 44px;
  border: none; background: transparent; cursor: pointer;
  font-family: var(--v-font); font-size: 13px; font-weight: 600;
  color: var(--v-accent); padding: 0 4px; margin-bottom: 6px;
}

/* ---------- forms ---------- */
.bk-field { margin-bottom: 14px; }
.bk-label { display: block; font-size: 12px; font-weight: 600; color: var(--v-body); margin-bottom: 6px; }
.bk-input {
  width: 100%; min-height: 44px; padding: 10px 14px;
  border: 1px solid var(--v-border-strong); border-radius: 10px;
  font-size: 16px; /* >=16px prevents iOS zoom-on-focus */
  background: var(--v-sunken); outline: none;
  transition: border-color .15s, background .15s;
  font-family: var(--v-font); color: var(--v-ink);
}
.bk-input:focus { border-color: var(--v-accent); background: #fff; }
.bk-error { font-size: 13px; color: var(--v-danger); margin: 4px 0; font-weight: 500; }

/* ---------- timezone picker (custom dropdown — no native select) ---------- */
.bk-tz { position: relative; }
.bk-tz-btn {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  width: 100%; min-height: 44px; padding: 10px 14px;
  background: var(--v-sunken); border: 1px solid var(--v-border-strong);
  border-radius: 10px; cursor: pointer;
  font-family: var(--v-font); font-size: 14px; font-weight: 500; color: var(--v-ink);
  transition: border-color .15s, background .15s;
}
.bk-tz-btn:hover, .bk-tz-btn[aria-expanded="true"] { border-color: var(--v-accent); background: #fff; }
.bk-tz-btn svg { flex-shrink: 0; color: var(--v-muted); transition: transform .15s; }
.bk-tz-btn[aria-expanded="true"] svg { transform: rotate(180deg); }
.bk-tz-list {
  position: absolute; z-index: 100; left: 0; right: 0; top: calc(100% + 6px);
  background: #fff; border: 1px solid var(--v-border); border-radius: var(--v-radius);
  box-shadow: var(--v-shadow-l); max-height: 55vh; overflow-y: auto; padding: 6px;
}
.bk-tz-opt {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  width: 100%; min-height: 44px; padding: 10px 12px;
  border: none; background: transparent; border-radius: var(--v-radius-s);
  cursor: pointer; text-align: left;
  font-family: var(--v-font); font-size: 14px; color: var(--v-ink);
}
.bk-tz-opt:hover { background: var(--v-sunken); }
.bk-tz-opt.active { background: var(--v-accent-soft); color: var(--v-accent); font-weight: 600; }
.bk-tz-opt .bk-tz-off { color: var(--v-muted); font-size: 12px; flex-shrink: 0; }
.bk-tz-opt.active .bk-tz-off { color: var(--v-accent); }

/* ---------- slots: day groups of pill buttons ---------- */
.bk-status {
  display: flex; align-items: center; gap: 8px;
  color: var(--v-muted); font-size: 13px; padding: 18px 4px;
}
.bk-days { display: flex; flex-direction: column; gap: 18px; }
.bk-day-label { font-size: 13px; font-weight: 700; letter-spacing: -.01em; margin-bottom: 8px; }
.bk-pills {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 8px;
}
.bk-pill {
  min-height: 44px; padding: 10px 8px;
  border-radius: 999px; border: 1px solid var(--v-border-strong);
  background: #fff; cursor: pointer;
  font-family: var(--v-font); font-size: 14px; font-weight: 600; color: var(--v-ink);
  transition: all .12s;
}
.bk-pill:hover { border-color: var(--v-accent); color: var(--v-accent); }
.bk-pill.active {
  background: var(--v-accent); border-color: var(--v-accent); color: #fff;
  box-shadow: 0 3px 10px rgba(0,122,255,.35);
}

/* ---------- confirm panel ---------- */
.bk-when {
  font-size: 15px; font-weight: 700; letter-spacing: -.01em;
  padding: 16px 20px; border-bottom: 1px solid var(--v-border);
  background: var(--v-violet-soft);
  border-radius: var(--v-radius-l) var(--v-radius-l) 0 0;
}
#step-confirm .bk-card form { padding: 16px 20px 20px; }
.bk-invitee { padding: 16px 20px 0; font-size: 14px; color: var(--v-body); }
#step-confirm .bk-card > .bk-error { margin: 12px 20px 0; }
#step-confirm .bk-card > .bk-btn { width: calc(100% - 40px); margin: 10px 20px 20px; }

/* ---------- booked / cancel ---------- */
.bk-check {
  width: 56px; height: 56px; border-radius: 50%; margin: 4px auto 14px;
  display: flex; align-items: center; justify-content: center;
  background: var(--v-success-soft); color: var(--v-success);
  font-size: 26px; font-weight: 700;
}
.bk-check-gray { background: var(--v-sunken); color: var(--v-muted); }
.bk-when-big { font-size: 17px; font-weight: 700; letter-spacing: -.01em; margin: 6px 0 18px; }
.bk-meet-url { color: var(--v-muted); margin: 10px 0 0; }
.bk-badge {
  display: inline-flex; align-items: center; padding: 3px 10px;
  border-radius: 999px; font-size: 11px; font-weight: 600;
}
.bk-badge-gray { background: var(--v-sunken); color: var(--v-muted); }
.bk-expander { margin-top: 18px; border-top: 1px solid var(--v-border); padding-top: 6px; }
.bk-expander summary {
  cursor: pointer; list-style: none; min-height: 44px;
  display: flex; align-items: center; justify-content: center;
  color: var(--v-muted); font-size: 13px; font-weight: 600;
}
.bk-expander summary::-webkit-details-marker { display: none; }
.bk-expander summary::after { content: " \25BE"; }
.bk-expander[open] summary::after { content: " \25B4"; }
.bk-expander-body { padding-bottom: 8px; }

/* ---------- spinner ---------- */
.bk-spinner {
  width: 18px; height: 18px; border: 2.5px solid var(--v-border-strong);
  border-top-color: var(--v-accent); border-radius: 50%;
  animation: bk-spin .7s linear infinite; display: inline-block; flex-shrink: 0;
}
@keyframes bk-spin { to { transform: rotate(360deg); } }

/* ---------- larger screens ---------- */
@media (min-width: 640px) {
  .bk-main { padding-top: 32px; }
  .bk-h1 { font-size: 24px; }
}