:root {
  --bg: #0a0a0b;
  --bg2: #111114;
  --bg3: #1a1a1f;
  --red: #e63946;
  --red-dark: #b82d38;
  --gold: #d4a853;
  --text: #f0f0f2;
  --text-muted: #8a8a96;
  --border: rgba(255,255,255,0.08);
  --font-display: 'Bebas Neue', sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --green: #2ecc71;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.book-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--border);
  background: rgba(17,17,20,0.95);
  backdrop-filter: blur(10px);
}

.book-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.12em;
  color: var(--text);
  text-decoration: none;
}

.book-back {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
}

.book-back:hover { color: var(--gold); }

.book-main {
  max-width: 820px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

.book-header {
  text-align: center;
  margin-bottom: 2rem;
}

.book-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 0.5rem;
}

.book-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 6vw, 3.2rem);
  letter-spacing: 0.06em;
  margin-bottom: 0.6rem;
  line-height: 1;
}

.book-header p {
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto;
  font-size: 0.95rem;
  line-height: 1.7;
}

.book-wizard { display: flex; flex-direction: column; gap: 1.5rem; }

.book-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: 0 0.5rem;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  min-width: 72px;
}

.step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
  background: var(--bg3);
  transition: all 0.25s;
}

.step-label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  text-align: center;
  white-space: nowrap;
}

.step.active .step-num {
  background: var(--red);
  border-color: var(--red);
  color: #fff;
}

.step.active .step-label { color: var(--text); }

.step.done .step-num {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}

.step-line {
  flex: 1;
  max-width: 60px;
  height: 1px;
  background: var(--border);
  margin: 0 0.25rem;
  margin-bottom: 1.2rem;
}

.book-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 2rem;
  min-height: 400px;
}

.book-panel { display: none; }
.book-panel.active {
  display: block;
  animation: fadeIn 0.35s ease;
}

.book-panel h2 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  letter-spacing: 0.06em;
  margin-bottom: 0.35rem;
  line-height: 1;
}

.panel-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.package-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.85rem;
  margin-bottom: 0.5rem;
}

.pkg-card {
  background: var(--bg3);
  border: 2px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.2s, background 0.2s;
  display: flex;
  flex-direction: column;
}

.pkg-card:hover {
  border-color: rgba(230,57,70,0.35);
  transform: translateY(-1px);
}

.pkg-card.selected {
  border-color: var(--red);
  background: rgba(230,57,70,0.07);
}

.pkg-name {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
  line-height: 1.3;
}

.pkg-meta {
  font-size: 0.75rem;
  color: var(--gold);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.pkg-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.55;
  flex: 1;
}

.pkg-price {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--red);
  margin-top: 0.85rem;
  letter-spacing: 0.04em;
}

.datetime-picker {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.date-col, .time-col {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  min-height: 280px;
  display: flex;
  flex-direction: column;
}

.date-col h3, .time-col h3 {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 0.85rem;
  flex-shrink: 0;
}

.date-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  overflow-y: auto;
  flex: 1;
}

.time-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.4rem;
  overflow-y: auto;
  flex: 1;
  align-content: start;
}

.date-btn, .time-btn {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.7rem 0.85rem;
  color: var(--text);
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
  font-size: 0.85rem;
  transition: all 0.2s;
  width: 100%;
}

.date-btn small { color: var(--text-muted); font-size: 0.75rem; }

.date-btn:hover, .time-btn:hover { border-color: var(--gold); }

.date-btn.selected, .time-btn.selected {
  border-color: var(--red);
  background: rgba(230,57,70,0.12);
  color: #fff;
}

.empty-msg, .loading {
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 0.5rem 0;
  line-height: 1.6;
}

.booking-summary {
  background: var(--bg3);
  border: 1px solid rgba(212,168,83,0.25);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
  line-height: 1.8;
}

.booking-summary strong { color: var(--gold); }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-row.full { grid-column: 1 / -1; }

.form-row label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.form-row input,
.form-row textarea {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.8rem 0.9rem;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: border-color 0.2s;
}

.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--red);
}

.form-error {
  color: var(--red);
  font-size: 0.85rem;
  min-height: 1.25rem;
  margin-top: 0.5rem;
}

.panel-footer {
  display: flex;
  justify-content: flex-end;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

.panel-footer.split {
  justify-content: space-between;
  align-items: center;
}

.btn-next, .btn-submit {
  background: var(--red);
  color: #fff;
  border: none;
  padding: 0.85rem 1.75rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: background 0.2s, transform 0.15s;
  font-family: var(--font-body);
}

.btn-next:disabled { opacity: 0.35; cursor: not-allowed; }

.btn-next:not(:disabled):hover,
.btn-submit:hover {
  background: var(--red-dark);
  transform: translateY(-1px);
}

.btn-back {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.85rem 1.25rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.8rem;
  font-family: var(--font-body);
  transition: all 0.2s;
}

.btn-back:hover {
  border-color: var(--text-muted);
  color: var(--text);
}

.success-box {
  text-align: center;
  padding: 2.5rem 1rem;
}

.success-icon {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  font-size: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
}

.success-box h2 {
  font-family: var(--font-display);
  font-size: 1.9rem;
  letter-spacing: 0.06em;
  margin-bottom: 0.6rem;
}

.success-box p {
  color: var(--text-muted);
  margin-bottom: 1.75rem;
  font-size: 0.95rem;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 680px) {
  .book-nav { padding: 1rem 1.25rem; }
  .book-card { padding: 1.25rem; }
  .package-grid { grid-template-columns: 1fr; }
  .datetime-picker { grid-template-columns: 1fr; }
  .date-col, .time-col { min-height: auto; }
  .date-list { max-height: 200px; }
  .form-grid { grid-template-columns: 1fr; }
  .step-label { font-size: 0.6rem; }
  .step-line { max-width: 24px; }
}