/* ============================================================
   BOOKING MODAL — Advanced CSS
   Multi-step: Service → Date/Time → Details → Confirm → Done
   ============================================================ */

/* ── OVERLAY ─────────────────────────────────────────────── */
#bk-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(8,16,28,0.82);
  backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center;
  padding: 1rem;
  opacity: 0; pointer-events: none;
  transition: opacity 0.38s ease;
}
#bk-overlay.open { opacity: 1; pointer-events: all; }

/* ── MODAL SHELL ─────────────────────────────────────────── */
.bk-modal {
  background: var(--white);
  width: 100%; max-width: 900px;
  max-height: 94vh;
  display: flex; flex-direction: column;
  position: relative; overflow: hidden;
  transform: translateY(36px) scale(0.96);
  transition: transform 0.42s cubic-bezier(0.34, 1.4, 0.64, 1);
  box-shadow: 0 40px 100px rgba(0,0,0,0.45), 0 0 0 1px rgba(197,151,58,0.15);
}
#bk-overlay.open .bk-modal { transform: translateY(0) scale(1); }

/* ── HEADER ──────────────────────────────────────────────── */
.bk-header {
  background: var(--navy-deep);
  padding: 1.6rem 2rem 1.4rem;
  display: flex; align-items: center; justify-content: space-between;
  flex-shrink: 0;
  border-bottom: 2px solid var(--gold);
  position: relative; overflow: hidden;
}
.bk-header::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 100% at 80% 50%, rgba(197,151,58,0.06) 0%, transparent 70%);
}
.bk-header-left { position: relative; z-index: 1; }
.bk-title { font-family: var(--serif); font-size: 1.4rem; font-weight: 400; color: var(--white); }
.bk-title em { font-style: italic; color: var(--gold-light); }
.bk-subtitle { font-size: 0.58rem; letter-spacing: 0.22em; text-transform: uppercase; color: rgba(255,255,255,0.35); margin-top: 0.2rem; }
.bk-close {
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.14);
  border-radius: 50%; color: rgba(255,255,255,0.65); font-size: 1rem;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: background 0.2s, color 0.2s, transform 0.28s var(--spring);
  position: relative; z-index: 1; flex-shrink: 0;
}
.bk-close:hover { background: rgba(197,151,58,0.22); color: var(--gold-light); transform: rotate(90deg) scale(1.1); }

/* ── STEP PROGRESS BAR ───────────────────────────────────── */
.bk-progress-bar {
  background: var(--navy); padding: 0; flex-shrink: 0;
  display: flex; overflow-x: auto; scrollbar-width: none;
}
.bk-progress-bar::-webkit-scrollbar { display: none; }
.bk-tab {
  padding: 0.8rem 1.6rem;
  font-size: 0.58rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: rgba(255,255,255,0.28); border-bottom: 2.5px solid transparent;
  cursor: default; white-space: nowrap;
  transition: color 0.28s, border-color 0.28s;
  display: flex; align-items: center; gap: 0.5rem;
}
.bk-tab .bk-tab-num {
  width: 18px; height: 18px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.55rem; color: rgba(255,255,255,0.3);
  transition: background 0.25s, border-color 0.25s, color 0.25s;
}
.bk-tab.active { color: var(--gold); border-bottom-color: var(--gold); }
.bk-tab.active .bk-tab-num { background: var(--gold); border-color: var(--gold); color: var(--navy-deep); font-weight: 700; }
.bk-tab.done { color: rgba(197,151,58,0.55); cursor: pointer; }
.bk-tab.done .bk-tab-num { background: rgba(197,151,58,0.18); border-color: rgba(197,151,58,0.5); color: var(--gold); }
.bk-tab.done .bk-tab-num::after { content: '✓'; }
.bk-tab.done .bk-tab-label { display: none; }
.bk-tab.done:hover { color: var(--gold-light); }

/* ── PROGRESS TRACK ──────────────────────────────────────── */
.bk-progress-track {
  height: 3px; background: rgba(255,255,255,0.06); flex-shrink: 0; position: relative;
}
.bk-progress-fill {
  position: absolute; top: 0; left: 0; height: 100%;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  transition: width 0.5s var(--ease-out);
  box-shadow: 0 0 8px rgba(197,151,58,0.5);
}

/* ── BODY ─────────────────────────────────────────────────── */
.bk-body {
  flex: 1; overflow-y: auto; padding: 2rem 2rem 1rem;
  scroll-behavior: smooth;
}
.bk-body::-webkit-scrollbar { width: 4px; }
.bk-body::-webkit-scrollbar-thumb { background: rgba(197,151,58,0.35); border-radius: 2px; }

/* ── PANES ───────────────────────────────────────────────── */
.bk-pane { display: none; }
.bk-pane.active { display: block; animation: bkSlideIn 0.32s var(--ease-out) both; }
.bk-pane.slide-back { animation: bkSlideBack 0.32s var(--ease-out) both; }
@keyframes bkSlideIn  { from{opacity:0;transform:translateX(18px)} to{opacity:1;transform:translateX(0)} }
@keyframes bkSlideBack { from{opacity:0;transform:translateX(-18px)} to{opacity:1;transform:translateX(0)} }
.bk-pane-title { font-family: var(--serif); font-size: 1.3rem; color: var(--navy-deep); margin-bottom: 0.35rem; }
.bk-pane-title em { font-style: italic; color: var(--gold); }
.bk-pane-sub { font-size: 0.77rem; color: var(--muted); margin-bottom: 1.8rem; }

/* ── STEP 1: SERVICE TILES ───────────────────────────────── */
.bk-svc-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 1rem; }
.bk-svc-tile {
  border: 2px solid var(--border); padding: 1.4rem;
  cursor: pointer; position: relative; overflow: hidden;
  transition: border-color 0.25s, transform 0.28s var(--spring), box-shadow 0.28s;
  background: var(--white);
}
.bk-svc-tile-top { height: 3px; background: var(--gold); position: absolute; top: 0; left: 0; right: 0; transform: scaleX(0); transform-origin: left; transition: transform 0.35s var(--ease-out); }
.bk-svc-tile:hover { transform: translateY(-3px); box-shadow: 0 10px 28px rgba(27,46,75,0.1); }
.bk-svc-tile:hover .bk-svc-tile-top { transform: scaleX(1); }
.bk-svc-tile.selected { border-color: var(--gold); background: var(--gold-pale); }
.bk-svc-tile.selected .bk-svc-tile-top { transform: scaleX(1); }
.bk-svc-check {
  position: absolute; top: 0.8rem; right: 0.8rem;
  width: 22px; height: 22px; border-radius: 50%;
  border: 2px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  transition: background 0.22s, border-color 0.22s, transform 0.28s var(--spring);
  font-size: 0.6rem;
}
.bk-svc-tile.selected .bk-svc-check { background: var(--gold); border-color: var(--gold); transform: scale(1.18); color: var(--navy-deep); font-weight: 700; }
.bk-svc-tile.selected .bk-svc-check::after { content: '✓'; }
.bk-svc-icon { font-size: 1.5rem; margin-bottom: 0.75rem; display: block; }
.bk-svc-name { font-family: var(--serif); font-size: 1.02rem; font-weight: 500; color: var(--navy-deep); margin-bottom: 0.3rem; }
.bk-svc-desc { font-size: 0.72rem; line-height: 1.65; color: var(--muted); }
.bk-svc-price { font-size: 0.68rem; color: var(--gold); font-weight: 500; margin-top: 0.55rem; letter-spacing: 0.05em; }

/* Add-on chips */
.bk-addons-label { font-size: 0.6rem; letter-spacing: 0.25em; text-transform: uppercase; color: var(--gold); margin: 1.6rem 0 0.8rem; }
.bk-addon-chips { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.bk-addon-chip {
  padding: 0.45rem 0.9rem;
  border: 1.5px solid var(--border); background: var(--white);
  font-size: 0.7rem; color: var(--navy); cursor: pointer;
  transition: border-color 0.22s, background 0.22s, transform 0.22s var(--spring), color 0.22s;
  display: flex; align-items: center; gap: 0.35rem;
}
.bk-addon-chip:hover { border-color: var(--gold); transform: translateY(-2px); }
.bk-addon-chip.selected { border-color: var(--gold); background: var(--gold-pale); color: var(--navy-deep); }
.bk-addon-chip .chip-price { font-size: 0.6rem; color: var(--gold); opacity: 0.8; }

/* ── STEP 2: CALENDAR ────────────────────────────────────── */
.bk-cal-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; }
.bk-cal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.2rem; }
.bk-cal-nav-btn {
  width: 36px; height: 36px;
  border: 1.5px solid var(--border); background: var(--white);
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  font-size: 1rem; color: var(--navy);
  transition: background 0.22s, border-color 0.22s, transform 0.22s var(--spring);
}
.bk-cal-nav-btn:hover { background: var(--navy); color: var(--white); border-color: var(--navy); transform: scale(1.1); }
.bk-cal-month-label { font-family: var(--serif); font-size: 1.05rem; color: var(--navy-deep); font-weight: 400; }
.bk-cal-grid { display: grid; grid-template-columns: repeat(7,1fr); gap: 3px; text-align: center; }
.bk-dow { font-size: 0.56rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); padding: 0.3rem 0; }
.bk-day {
  aspect-ratio: 1/1; display: flex; align-items: center; justify-content: center;
  font-size: 0.76rem; color: var(--navy); cursor: pointer; border-radius: 50%;
  transition: background 0.2s, color 0.2s, transform 0.22s var(--spring), box-shadow 0.22s;
  position: relative;
}
.bk-day:hover:not(.past):not(.empty) { background: var(--navy-pale); transform: scale(1.14); }
.bk-day.past { color: rgba(107,122,141,0.27); cursor: default; }
.bk-day.empty { cursor: default; }
.bk-day.today { font-weight: 500; color: var(--gold); }
.bk-day.today::after { content: ''; position: absolute; bottom: 3px; left: 50%; transform: translateX(-50%); width: 4px; height: 4px; background: var(--gold); border-radius: 50%; }
.bk-day.selected { background: var(--navy) !important; color: var(--white) !important; font-weight: 500; transform: scale(1.18); box-shadow: 0 4px 14px rgba(27,46,75,0.32); }
.bk-day.selected::after { display: none; }
.bk-day.has-slots::before { content: ''; position: absolute; bottom: 4px; left: 50%; transform: translateX(-50%); width: 4px; height: 4px; background: var(--gold); border-radius: 50%; opacity: 0.5; }
.bk-day.selected.has-slots::before { display: none; }

.bk-selected-date-display {
  display: none; align-items: center; gap: 0.6rem;
  background: var(--navy-pale); padding: 0.85rem 1.1rem; margin-bottom: 1.2rem;
  font-size: 0.78rem; color: var(--navy); animation: fadeIn 0.3s both;
}
.bk-selected-date-display.show { display: flex; }
.bk-time-section-title { font-size: 0.62rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--gold); margin-bottom: 1rem; }
.bk-time-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.55rem; }
.bk-time-slot {
  padding: 0.72rem 0.85rem;
  border: 1.5px solid var(--border); background: var(--white);
  font-size: 0.73rem; color: var(--navy); cursor: pointer; text-align: center;
  transition: border-color 0.22s, background 0.22s, transform 0.22s var(--spring), color 0.22s;
  position: relative; overflow: hidden;
}
.bk-time-slot::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent, rgba(197,151,58,0.08), transparent);
  transform: translateX(-100%);
  transition: transform 0.4s ease;
}
.bk-time-slot:hover:not(.unavailable) { border-color: var(--gold); transform: translateY(-2px); color: var(--navy); }
.bk-time-slot:hover:not(.unavailable)::before { transform: translateX(100%); }
.bk-time-slot.selected { background: var(--navy); color: var(--white); border-color: var(--navy); box-shadow: 0 4px 12px rgba(27,46,75,0.25); }
.bk-time-slot.unavailable { color: rgba(107,122,141,0.28); cursor: default; text-decoration: line-through; font-size: 0.66rem; }
.bk-no-date-msg { font-size: 0.78rem; color: var(--muted); padding: 1rem 0; font-style: italic; }

/* ── STEP 3: DETAILS FORM ────────────────────────────────── */
.bk-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.bk-field { display: flex; flex-direction: column; gap: 0.4rem; }
.bk-field.full { grid-column: 1 / -1; }
.bk-field label { font-size: 0.6rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--navy); opacity: 0.58; }
.bk-field input, .bk-field select, .bk-field textarea {
  width: 100%; background: var(--white); border: 1.5px solid var(--border);
  color: var(--navy-deep); padding: 0.8rem 1rem; font-family: var(--sans); font-size: 0.82rem;
  outline: none; transition: border-color 0.25s, box-shadow 0.25s;
}
.bk-field input:focus, .bk-field select:focus, .bk-field textarea:focus {
  border-color: var(--gold); box-shadow: 0 0 0 4px rgba(197,151,58,0.1);
}
.bk-field input.invalid, .bk-field select.invalid { border-color: var(--error); animation: shake 0.4s ease; }
.bk-field textarea { height: 80px; resize: none; }
.bk-field-hint { font-size: 0.62rem; color: var(--muted); margin-top: 0.25rem; }
.bk-field-error { font-size: 0.62rem; color: var(--error); margin-top: 0.25rem; display: none; }
.bk-field.has-error .bk-field-error { display: block; }
.bk-field.has-error input, .bk-field.has-error select { border-color: var(--error); }

/* ── STEP 4: CONFIRM ─────────────────────────────────────── */
.bk-confirm-card {
  background: var(--navy-deep); border-left: 3px solid var(--gold);
  padding: 2rem 2.2rem; margin-bottom: 1.5rem;
  animation: bkSlideIn 0.3s var(--ease-out) both;
}
.bk-cc-head { font-size: 0.6rem; letter-spacing: 0.25em; text-transform: uppercase; color: var(--gold); margin-bottom: 1.2rem; }
.bk-cc-rows { display: flex; flex-direction: column; }
.bk-cc-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.55rem 0; border-bottom: 1px solid rgba(255,255,255,0.06);
  font-size: 0.8rem;
}
.bk-cc-row:last-child { border-bottom: none; }
.bk-cc-row .label { color: rgba(255,255,255,0.42); }
.bk-cc-row .value { color: rgba(255,255,255,0.88); text-align: right; max-width: 60%; }
.bk-cc-total {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 1rem; margin-top: 0.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.bk-cc-total .label { font-size: 0.68rem; letter-spacing: 0.15em; text-transform: uppercase; color: rgba(255,255,255,0.35); }
.bk-cc-total .price { font-family: var(--serif); font-size: 2rem; color: var(--gold-light); }
.bk-notice {
  background: var(--gold-pale); border-left: 3px solid var(--gold);
  padding: 1rem 1.2rem; font-size: 0.75rem; line-height: 1.7; color: var(--navy);
  margin-bottom: 1.5rem;
}

/* ── STEP 5: SUCCESS ─────────────────────────────────────── */
.bk-success {
  text-align: center; padding: 3rem 1rem;
}
.bk-success-ring {
  width: 84px; height: 84px; margin: 0 auto 1.5rem;
  border: 2px solid var(--gold); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  animation: successPop 0.55s var(--spring) 0.1s both;
  background: var(--gold-pale);
}
@keyframes successPop { from{transform:scale(0);opacity:0} to{transform:scale(1);opacity:1} }
@keyframes drawCheck { to { stroke-dashoffset: 0; } }
.bk-success-title { font-family: var(--serif); font-size: 1.85rem; color: var(--navy-deep); margin-bottom: 0.75rem; }
.bk-success-title em { font-style: italic; color: var(--gold); }
.bk-success-sub { font-size: 0.82rem; line-height: 1.8; color: var(--muted); max-width: 430px; margin: 0 auto 2rem; }
.bk-success-summary {
  background: var(--navy-pale); padding: 1.5rem 1.8rem; text-align: left;
  max-width: 420px; margin: 0 auto;
}
.bk-ss-row { display: flex; justify-content: space-between; font-size: 0.77rem; padding: 0.4rem 0; border-bottom: 1px solid var(--border); color: var(--navy-deep); }
.bk-ss-row:last-child { border-bottom: none; }
.bk-ss-row .label { color: var(--muted); }

/* ── FOOTER NAV ──────────────────────────────────────────── */
.bk-footer {
  flex-shrink: 0; padding: 1.2rem 2rem;
  border-top: 1px solid var(--border); background: var(--off-white);
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
.bk-footer-left { font-size: 0.7rem; color: var(--muted); }
.bk-footer-left strong { color: var(--navy); }
.bk-btn-back {
  background: transparent; border: 1.5px solid var(--border); color: var(--navy);
  padding: 0.75rem 1.6rem; font-family: var(--sans); font-size: 0.67rem;
  letter-spacing: 0.15em; text-transform: uppercase; cursor: pointer;
  transition: border-color 0.25s, transform 0.25s var(--spring), background 0.2s;
  display: flex; align-items: center; gap: 0.4rem;
}
.bk-btn-back:hover { border-color: var(--navy); transform: translateX(-3px); background: var(--navy-pale); }
.bk-btn-next {
  background: var(--navy); color: var(--white); border: none;
  padding: 0.9rem 2.4rem; font-family: var(--sans); font-size: 0.72rem;
  letter-spacing: 0.18em; text-transform: uppercase; cursor: pointer;
  position: relative; overflow: hidden;
  transition: background 0.3s, transform 0.28s var(--spring), box-shadow 0.3s;
  display: flex; align-items: center; gap: 0.5rem;
}
.bk-btn-next::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transform: translateX(-100%);
  transition: transform 0.5s ease;
}
.bk-btn-next:hover { background: var(--navy-light); transform: translateY(-2px); box-shadow: 0 8px 22px rgba(27,46,75,0.28); }
.bk-btn-next:hover::before { transform: translateX(100%); }
.bk-btn-next:active { transform: translateY(0) scale(0.98); }
.bk-btn-next:disabled { opacity: 0.35; cursor: not-allowed; pointer-events: none; }
.bk-btn-confirm {
  background: var(--gold); color: var(--navy-deep); border: none;
  padding: 0.9rem 2.4rem; font-family: var(--sans); font-size: 0.72rem;
  letter-spacing: 0.18em; text-transform: uppercase; cursor: pointer; font-weight: 500;
  position: relative; overflow: hidden;
  transition: background 0.3s, transform 0.28s var(--spring), box-shadow 0.3s;
}
.bk-btn-confirm::before {
  content: ''; position: absolute; top: 0; left: -80%;
  width: 50%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.32), transparent);
  transform: skewX(-15deg);
  transition: left 0.55s ease;
}
.bk-btn-confirm:hover { background: var(--gold-light); transform: translateY(-3px) scale(1.04); box-shadow: 0 12px 32px rgba(197,151,58,0.48); }
.bk-btn-confirm:hover::before { left: 160%; }

/* ── VALIDATION / SHAKE ──────────────────────────────────── */
@keyframes shake {
  0%,100%{transform:translateX(0)}
  20%{transform:translateX(-6px)}
  40%{transform:translateX(6px)}
  60%{transform:translateX(-4px)}
  80%{transform:translateX(4px)}
}
.shake { animation: shake 0.4s ease; }

/* ── PRICE BADGE (live) ──────────────────────────────────── */
.bk-live-price {
  display: inline-flex; align-items: baseline; gap: 0.35rem;
  font-family: var(--serif); font-size: 1.4rem; color: var(--gold);
  transition: transform 0.3s var(--spring), color 0.3s;
}
.bk-live-price.bump { transform: scale(1.2); color: var(--gold-light); }
.bk-live-price-label { font-size: 0.65rem; color: var(--muted); font-family: var(--sans); }

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 680px) {
  .bk-modal { max-height: 100vh; }
  .bk-cal-wrap { grid-template-columns: 1fr; }
  .bk-svc-grid { grid-template-columns: 1fr; }
  .bk-form-grid { grid-template-columns: 1fr; }
  .bk-body { padding: 1.5rem 1.2rem; }
  .bk-footer { padding: 1rem 1.2rem; flex-wrap: wrap; }
  .bk-header { padding: 1.2rem; }
}