/* ==========================================================================
   CFAI Bookings — Monochrome Editorial Stylesheet (book.html & book-admin.html)
   Aligned with Coal Face AI brand identity (black, charcoal, slate grey, off-white)
   ========================================================================== */

:root {
  --cfai-ink: #111827;
  --cfai-charcoal: #1F2937;
  --cfai-slate: #374151;
  --cfai-muted: #4B5563;
  --cfai-subtle: #6B7280;
  --cfai-border: #E5E7EB;
  --cfai-border-strong: #D1D5DB;
  --cfai-surface: #FFFFFF;
  --cfai-surface-alt: #F9FAFB;
  --cfai-focus-ring: #111827;
  --cfai-error: #991B1B;
  --cfai-error-bg: #FEF2F2;
  --cfai-error-border: #FECACA;
  --cfai-success: #166534;
  --cfai-success-bg: #F0FDF4;
  --cfai-success-border: #BBF7D0;
  --cfai-warn: #92400E;
  --cfai-warn-bg: #FFFBEB;
  --cfai-warn-border: #FDE68A;
}

/* Visually hidden helper (preserves accessibility tree per modern-web-guidance `forms`) */
.visually-hidden {
  position: absolute;
  clip-path: inset(50%);
  overflow: hidden;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  white-space: nowrap;
}

/* Hero & Layout */
.bookings-hero {
  padding-top: calc(var(--nav-height) + 3.5rem);
  padding-bottom: 4rem;
  background-color: var(--cfai-surface);
}

.bookings-grid {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 3rem;
  align-items: start;
}

@media (max-width: 992px) {
  .bookings-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* Lifecycle Step Banner */
.lifecycle-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
  margin-bottom: 2.5rem;
  padding: 0.875rem;
  background-color: var(--cfai-surface-alt);
  border: 1px solid var(--cfai-border);
  border-radius: 10px;
}

.lifecycle-step {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.75rem 0.875rem;
  border-radius: 8px;
  font-size: 0.85rem;
  line-height: 1.4;
  color: var(--cfai-muted);
  border: 1px solid transparent;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.lifecycle-step-body {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.lifecycle-step-title {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--cfai-charcoal);
  line-height: 1.25;
}

.lifecycle-step-desc {
  font-size: 0.8rem;
  line-height: 1.38;
  color: var(--cfai-muted);
  text-wrap: pretty;
}

.lifecycle-step.completed {
  background-color: rgba(17, 24, 39, 0.03);
  border-color: var(--cfai-border);
  color: var(--cfai-charcoal);
}

.lifecycle-step.completed .lifecycle-step-title {
  color: var(--cfai-ink);
}

.lifecycle-step.active {
  background-color: var(--cfai-surface);
  color: var(--cfai-ink);
  box-shadow: 0 2px 6px rgba(17, 24, 39, 0.06);
  border-color: var(--cfai-ink);
}

.lifecycle-step.active .lifecycle-step-title {
  color: var(--cfai-ink);
}

.lifecycle-step.active .lifecycle-step-desc {
  color: var(--cfai-slate);
}

.lifecycle-step-num {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background-color: var(--cfai-border);
  color: var(--cfai-charcoal);
  font-weight: 700;
  font-size: 0.78rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}

.lifecycle-step.completed .lifecycle-step-num {
  background-color: var(--cfai-slate);
  color: #FFFFFF;
}

.lifecycle-step.active .lifecycle-step-num {
  background-color: var(--cfai-ink);
  color: #FFFFFF;
}

@media (max-width: 960px) {
  .lifecycle-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.5rem;
    padding: 0.65rem;
  }
}

@media (max-width: 600px) {
  .lifecycle-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.45rem;
    padding: 0.55rem;
    margin-bottom: 1.75rem;
  }

  .lifecycle-step {
    padding: 0.55rem 0.6rem;
    gap: 0.5rem;
  }

  .lifecycle-step-num {
    width: 22px;
    height: 22px;
    font-size: 0.72rem;
  }

  .lifecycle-step-title {
    font-size: 0.82rem;
  }

  .lifecycle-step-desc {
    font-size: 0.74rem;
    line-height: 1.3;
  }
}

/* Step 3 Verified Slot Summary Layout */
.verified-slot-summary {
  line-height: 1.5;
}

.verified-slot-primary-line {
  color: var(--cfai-ink);
  font-size: 0.975rem;
}

@media (min-width: 769px) {
  .verified-slot-primary-line {
    white-space: nowrap;
  }
}

.verified-slot-secondary-line,
.verified-slot-hold-line {
  color: var(--cfai-slate);
  font-size: 0.88rem;
}

/* Lightweight "What happens next" section */
.what-happens-next {
  padding: 1.15rem 0;
  margin-bottom: 1.5rem;
  border-top: 1px solid var(--cfai-border);
  border-bottom: 1px solid var(--cfai-border);
}

.what-happens-next-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: var(--cfai-ink);
}

.what-happens-next-copy {
  font-size: 0.95rem;
  color: var(--cfai-muted);
  line-height: 1.6;
  margin-bottom: 0;
}

/* Date & Slot Picker */
.slot-picker-section {
  margin-bottom: 2rem;
  border: 1px solid var(--cfai-border);
  border-radius: 8px;
  padding: 1.5rem;
  background-color: var(--cfai-surface-alt);
}

.slot-tz-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.slot-tz-copy {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.slot-tz-schedule {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--cfai-ink);
}

.slot-tz-indicator {
  font-size: 0.825rem;
  color: var(--cfai-muted);
}

.tz-toggle-group {
  display: inline-flex;
  align-items: center;
  background-color: var(--cfai-surface);
  border: 1px solid var(--cfai-border);
  border-radius: 6px;
  padding: 2px;
  gap: 2px;
}

.tz-toggle-btn {
  border: none;
  background: transparent;
  color: var(--cfai-muted);
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.35rem 0.65rem;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition);
  min-height: 32px;
}

.tz-toggle-btn:hover {
  color: var(--cfai-ink);
}

.tz-toggle-btn[aria-pressed="true"] {
  background-color: var(--cfai-ink);
  color: #FFFFFF;
}

.tz-toggle-btn:focus-visible {
  outline: 2px solid var(--cfai-focus-ring);
  outline-offset: 1px;
}

.selected-slot-summary {
  margin-top: 0.85rem;
  padding: 0.7rem 0.9rem;
  background-color: var(--cfai-surface);
  border: 1px solid var(--cfai-border);
  border-left: 3px solid var(--cfai-ink);
  border-radius: 6px;
  font-size: 0.85rem;
  color: var(--cfai-ink);
  line-height: 1.45;
}

.date-strip {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(112px, 1fr));
  gap: 0.6rem;
  margin-bottom: 1.25rem;
}

.date-pill {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 64px;
  padding: 0.6rem 0.5rem;
  background-color: var(--cfai-surface);
  border: 1px solid var(--cfai-border);
  border-radius: 6px;
  cursor: pointer;
  font-family: inherit;
  transition: var(--transition);
  text-align: center;
  color: var(--cfai-ink);
}

.date-pill:hover:not(:disabled) {
  border-color: var(--cfai-ink);
  transform: translateY(-1px);
}

.date-pill[aria-pressed="true"] {
  background-color: var(--cfai-ink);
  border-color: var(--cfai-ink);
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(17, 24, 39, 0.16);
}

.date-pill-day {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  font-weight: 600;
  opacity: 0.85;
}

.date-pill-date {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 2px 0;
}

.date-pill-count {
  font-size: 0.72rem;
  opacity: 0.8;
}

.slot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(135px, 1fr));
  gap: 0.6rem;
}

.slot-btn {
  min-height: 48px;
  padding: 0.65rem 0.75rem;
  background-color: var(--cfai-surface);
  border: 1px solid var(--cfai-border);
  border-radius: 6px;
  font-family: inherit;
  font-size: 0.925rem;
  font-weight: 600;
  color: var(--cfai-ink);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.slot-btn:hover {
  border-color: var(--cfai-ink);
  background-color: var(--cfai-surface);
}

.slot-btn[aria-pressed="true"] {
  background-color: var(--cfai-ink);
  border-color: var(--cfai-ink);
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(17, 24, 39, 0.18);
}

.slot-btn-sub {
  font-size: 0.72rem;
  font-weight: 400;
  opacity: 0.85;
  margin-top: 2px;
}

/* Accessible Form Controls (Modern Web Guidance `forms`, `required-field-feedback`, `accessible-error-announcement`) */
.booking-field {
  margin-block-end: 1.5rem;
  text-align: left;
}

.booking-label {
  display: inline-block;
  margin-block-end: 0.4rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--cfai-ink);
  padding: 6px 0;
  margin-top: -6px;
}

.booking-label .req-star {
  color: var(--cfai-ink);
  margin-inline-start: 2px;
}

.booking-hint {
  display: block;
  font-size: 0.8125rem;
  color: var(--cfai-muted);
  margin-block-end: 0.45rem;
}

.booking-input {
  width: 100%;
  min-height: 48px;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  font-family: inherit;
  color: var(--cfai-ink);
  background-color: var(--cfai-surface);
  border: 1px solid #9CA3AF;
  border-radius: 6px;
  box-sizing: border-box;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

@media (pointer: coarse) {
  .booking-input,
  .slot-btn {
    min-height: 52px;
  }
}

.booking-input:focus-visible {
  outline: 2px solid var(--cfai-focus-ring);
  outline-offset: 2px;
  border-color: var(--cfai-focus-ring);
}

textarea.booking-input {
  resize: vertical;
  min-height: 130px;
  line-height: 1.5;
}

.field-error-msg {
  display: none;
  color: var(--cfai-error);
  font-size: 0.835rem;
  font-weight: 500;
  margin-block-start: 0.35rem;
}

/* Highlight invalid fields ONLY after user interaction (:user-invalid + fallback) */
.booking-input:user-invalid,
.booking-input.user-invalid-fallback {
  border-color: var(--cfai-error);
  border-width: 2px;
  background-color: var(--cfai-error-bg);
}

.booking-input:user-invalid ~ .field-error-msg,
.booking-input.user-invalid-fallback ~ .field-error-msg {
  display: block;
}

.booking-input:required:user-valid,
.booking-input:required.user-valid-fallback {
  border-color: var(--cfai-ink);
}

.char-counter {
  font-size: 0.8rem;
  color: var(--cfai-subtle);
  text-align: right;
  margin-block-start: 0.3rem;
}

/* Checkbox Row */
.consent-row {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem;
  background-color: var(--cfai-surface-alt);
  border: 1px solid var(--cfai-border);
  border-radius: 6px;
  margin-block-end: 1.5rem;
}

.consent-row input[type="checkbox"] {
  width: 20px;
  height: 20px;
  margin-top: 3px;
  accent-color: var(--cfai-ink);
  flex-shrink: 0;
  cursor: pointer;
}

.consent-row label {
  font-size: 0.875rem;
  color: var(--cfai-muted);
  line-height: 1.5;
  cursor: pointer;
}

/* Status & Feedback Banners */
.status-banner {
  padding: 1.1rem 1.35rem;
  border-radius: 6px;
  margin-block-end: 1.5rem;
  font-size: 0.925rem;
  line-height: 1.5;
}

.status-banner.error {
  background-color: var(--cfai-error-bg);
  border: 1px solid var(--cfai-error-border);
  color: var(--cfai-error);
}

.status-banner.success {
  background-color: var(--cfai-success-bg);
  border: 1px solid var(--cfai-success-border);
  color: var(--cfai-success);
}

.status-banner.warn {
  background-color: var(--cfai-warn-bg);
  border: 1px solid var(--cfai-warn-border);
  color: var(--cfai-warn);
}

.status-banner.info {
  background-color: var(--cfai-surface-alt);
  border: 1px solid var(--cfai-border-strong);
  border-left: 4px solid var(--cfai-ink);
  color: var(--cfai-ink);
}

/* ==========================================================================
   Administrator Dashboard Redesign (Part 2 — Monochrome Editorial Console)
   ========================================================================== */
.admin-shell {
  padding-top: calc(var(--nav-height) + 2.75rem);
  padding-bottom: 5rem;
  min-height: 88vh;
  background-color: var(--cfai-surface-alt);
}

.admin-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-bottom: 1.75rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--cfai-border);
}

.admin-identity-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.75rem;
  background-color: var(--cfai-surface-alt);
  border: 1px solid var(--cfai-border);
  border-radius: 999px;
  font-size: 0.78rem;
  color: var(--cfai-muted);
  font-weight: 500;
}

.admin-filter-bar {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.admin-filter-btn {
  border: 1px solid var(--cfai-border-strong);
  background-color: var(--cfai-surface);
  color: var(--cfai-muted);
  font-family: inherit;
  font-size: 0.84rem;
  font-weight: 600;
  padding: 0.5rem 0.95rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.admin-filter-btn:hover {
  border-color: var(--cfai-ink);
  color: var(--cfai-ink);
}

.admin-filter-btn[aria-pressed="true"] {
  background-color: var(--cfai-ink);
  border-color: var(--cfai-ink);
  color: #FFFFFF;
}

.admin-request-card {
  background-color: var(--cfai-surface);
  border: 1px solid var(--cfai-border);
  border-radius: 8px;
  padding: 1.75rem;
  margin-bottom: 1.15rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

.admin-request-card.highlighted {
  border-color: var(--cfai-ink);
  box-shadow: 0 0 0 2px rgba(17, 24, 39, 0.15);
}

.admin-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.15rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--cfai-border);
}

.admin-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--cfai-ink);
  margin: 0 0 0.2rem 0;
}

.admin-card-subtitle {
  font-size: 0.875rem;
  color: var(--cfai-muted);
  margin: 0;
}

.admin-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.85rem 1.25rem;
  margin-bottom: 1.15rem;
  font-size: 0.885rem;
}

.admin-meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.admin-meta-label {
  font-size: 0.74rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--cfai-subtle);
}

.admin-meta-value {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--cfai-ink);
  word-break: break-word;
}

.admin-summary-box {
  background-color: var(--cfai-surface-alt);
  border: 1px solid var(--cfai-border);
  border-radius: 6px;
  padding: 1rem 1.15rem;
  margin-bottom: 1.25rem;
  white-space: pre-wrap;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--cfai-charcoal);
}

.admin-actions-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
  padding-top: 0.25rem;
}

.admin-btn-primary {
  background-color: var(--cfai-ink);
  color: #FFFFFF;
  border: 1px solid var(--cfai-ink);
  border-radius: 6px;
  padding: 0.6rem 1.25rem;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.15s ease, opacity 0.15s ease;
}

.admin-btn-primary:hover:not(:disabled) {
  background-color: var(--cfai-charcoal);
}

.admin-btn-secondary {
  background-color: var(--cfai-surface);
  color: var(--cfai-ink);
  border: 1px solid var(--cfai-border-strong);
  border-radius: 6px;
  padding: 0.6rem 1.15rem;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.admin-btn-secondary:hover:not(:disabled) {
  border-color: var(--cfai-ink);
  background-color: var(--cfai-surface-alt);
}

.admin-btn-danger {
  background-color: var(--cfai-surface);
  color: var(--cfai-error);
  border: 1px solid var(--cfai-error-border);
  border-radius: 6px;
  padding: 0.6rem 1.15rem;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.admin-btn-danger:hover:not(:disabled) {
  background-color: var(--cfai-error-bg);
  border-color: var(--cfai-error);
}

.admin-btn-primary:disabled,
.admin-btn-secondary:disabled,
.admin-btn-danger:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.admin-inline-confirm-panel,
.admin-details-drawer {
  margin-top: 1rem;
  padding: 1.15rem 1.25rem;
  background-color: var(--cfai-surface-alt);
  border: 1px solid var(--cfai-border-strong);
  border-radius: 6px;
}

.admin-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.admin-badge.pending_approval {
  background-color: var(--cfai-warn-bg);
  color: var(--cfai-warn);
  border: 1px solid var(--cfai-warn-border);
}

.admin-badge.confirmed {
  background-color: var(--cfai-ink);
  color: #FFFFFF;
  border: 1px solid var(--cfai-ink);
}

.admin-badge.completed {
  background-color: var(--cfai-surface-alt);
  color: var(--cfai-ink);
  border: 1px solid var(--cfai-border-strong);
}

.admin-badge.cancelling,
.admin-badge.rescheduling,
.admin-badge.reschedule_requested {
  background-color: var(--cfai-warn-bg);
  color: var(--cfai-warn);
  border: 1px solid var(--cfai-warn-border);
}

.admin-badge.reschedule_failed {
  background-color: var(--cfai-error-bg);
  color: var(--cfai-error);
  border: 1px solid var(--cfai-error-border);
}

.admin-badge.declined,
.admin-badge.expired,
.admin-badge.cancelled,
.admin-badge.failed {
  background-color: #F3F4F6;
  color: #4B5563;
  border: 1px solid #D1D5DB;
}

/* Collapsible System Diagnostics Section */
.admin-diagnostics-details {
  margin-top: 3rem;
  background-color: var(--cfai-surface);
  border: 1px solid var(--cfai-border);
  border-radius: 8px;
  overflow: hidden;
}

.admin-diagnostics-summary {
  padding: 1rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--cfai-muted);
  cursor: pointer;
  user-select: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--cfai-surface);
}

.admin-diagnostics-summary:hover {
  color: var(--cfai-ink);
  background-color: var(--cfai-surface-alt);
}

.admin-diagnostics-body {
  padding: 1.25rem 1.5rem 1.5rem;
  border-top: 1px solid var(--cfai-border);
  background-color: var(--cfai-surface-alt);
}

.password-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.password-toggle-btn {
  position: absolute;
  right: 0.5rem;
  background: none;
  border: none;
  color: var(--cfai-muted);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  min-height: 44px;
}