/* ============================================================
   Fitness Booking Calendar — Stylesheet
   Aesthetic: Dark athletic / premium wellness studio
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=Barlow+Condensed:wght@500;600;700&display=swap');

/* ── CSS Variables ── */
:root {
  --fbc-bg:            #0f1117;
  --fbc-surface:       #181c27;
  --fbc-surface-2:     #1f2435;
  --fbc-border:        rgba(255,255,255,0.08);
  --fbc-border-strong: rgba(255,255,255,0.15);
  --fbc-text:          #e8eaf0;
  --fbc-text-muted:    #8892a4;
  --fbc-accent:        #4f8ef7;
  --fbc-accent-glow:   rgba(79,142,247,0.25);
  --fbc-green:         #22C55E;
  --fbc-green-bg:      rgba(34,197,94,0.12);
  --fbc-orange:        #F97316;
  --fbc-orange-bg:     rgba(249,115,22,0.12);
  --fbc-red:           #EF4444;
  --fbc-red-bg:        rgba(239,68,68,0.12);
  --fbc-radius:        12px;
  --fbc-radius-sm:     8px;
  --fbc-shadow:        0 8px 32px rgba(0,0,0,0.4);
  --fbc-shadow-lg:     0 24px 64px rgba(0,0,0,0.6);
  --fbc-font:          'DM Sans', system-ui, sans-serif;
  --fbc-font-display:  'Barlow Condensed', sans-serif;
  --fbc-transition:    0.2s cubic-bezier(0.4,0,0.2,1);
}

/* ── Root Container ── */
#fbc-root {
  font-family:     var(--fbc-font);
  background:      var(--fbc-bg);
  border-radius:   var(--fbc-radius);
  overflow:        hidden;
  position:        relative;
  box-shadow:      var(--fbc-shadow-lg);
  border:          1px solid var(--fbc-border);
  color:           var(--fbc-text);
}

/* ── Toolbar ── */
#fbc-toolbar {
  background:   var(--fbc-surface);
  border-bottom: 1px solid var(--fbc-border);
  padding:       0 20px;
}

.fbc-toolbar-inner {
  display:         flex;
  align-items:     center;
  justify-content: space-between;
  flex-wrap:       wrap;
  gap:             12px;
  min-height:      60px;
  padding:         10px 0;
}

.fbc-brand {
  display:     flex;
  align-items: center;
  gap:         10px;
  font-family: var(--fbc-font-display);
  font-size:   18px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color:       var(--fbc-text);
}

.fbc-brand-icon {
  width:  22px;
  height: 22px;
  color:  var(--fbc-accent);
  flex-shrink: 0;
}

.fbc-controls {
  display:     flex;
  align-items: center;
  gap:         20px;
  flex-wrap:   wrap;
}

#fbc-category-filter {
  background:    var(--fbc-surface-2);
  border:        1px solid var(--fbc-border-strong);
  color:         var(--fbc-text);
  border-radius: var(--fbc-radius-sm);
  padding:       8px 14px;
  font-family:   var(--fbc-font);
  font-size:     13px;
  font-weight:   500;
  cursor:        pointer;
  outline:       none;
  transition:    border-color var(--fbc-transition), box-shadow var(--fbc-transition);
  appearance:    none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238892a4' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 34px;
}

#fbc-category-filter:focus {
  border-color: var(--fbc-accent);
  box-shadow:   0 0 0 3px var(--fbc-accent-glow);
}

.fbc-legend {
  display:     flex;
  align-items: center;
  gap:         10px;
  font-size:   12px;
  color:       var(--fbc-text-muted);
  font-weight: 500;
}

.fbc-legend-dot {
  width:         10px;
  height:        10px;
  border-radius: 50%;
  display:       inline-block;
  flex-shrink:   0;
}
.fbc-legend-dot.available { background: var(--fbc-green); box-shadow: 0 0 8px rgba(34,197,94,0.5); }
.fbc-legend-dot.limited   { background: var(--fbc-orange); box-shadow: 0 0 8px rgba(249,115,22,0.5); }
.fbc-legend-dot.full      { background: var(--fbc-red); box-shadow: 0 0 8px rgba(239,68,68,0.5); }

/* ── Calendar Container ── */
#fbc-calendar-container {
  padding: 20px;
  background: var(--fbc-bg);
}

#fbc-calendar {
  min-height: 600px;
}

/* ============================================================
   FullCalendar Overrides — dark theme
   ============================================================ */

/* Toolbar */
.fc .fc-toolbar {
  margin-bottom: 16px;
  flex-wrap:     wrap;
  gap:           8px;
}

.fc .fc-toolbar-title {
  font-family:    var(--fbc-font-display);
  font-size:      clamp(18px, 3vw, 24px);
  font-weight:    600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color:          var(--fbc-text);
}

.fc .fc-button {
  background:    var(--fbc-surface-2) !important;
  border:        1px solid var(--fbc-border-strong) !important;
  color:         var(--fbc-text) !important;
  border-radius: var(--fbc-radius-sm) !important;
  font-family:   var(--fbc-font) !important;
  font-size:     13px !important;
  font-weight:   500 !important;
  padding:       7px 14px !important;
  transition:    background var(--fbc-transition), border-color var(--fbc-transition), box-shadow var(--fbc-transition) !important;
  text-transform: none !important;
  box-shadow:    none !important;
}

.fc .fc-button:hover {
  background:   var(--fbc-accent) !important;
  border-color: var(--fbc-accent) !important;
  box-shadow:   0 0 0 3px var(--fbc-accent-glow) !important;
}

.fc .fc-button-active,
.fc .fc-button:not(:disabled):active {
  background:   var(--fbc-accent) !important;
  border-color: var(--fbc-accent) !important;
}

.fc .fc-button:disabled {
  opacity: 0.35 !important;
  cursor:  not-allowed !important;
}

/* Grid */
.fc .fc-scrollgrid,
.fc .fc-scrollgrid-section > td,
.fc table {
  border-color: var(--fbc-border) !important;
}

.fc .fc-col-header-cell {
  background:    var(--fbc-surface) !important;
  border-color:  var(--fbc-border) !important;
  padding:       10px 0 !important;
}

.fc .fc-col-header-cell-cushion {
  font-family:    var(--fbc-font) !important;
  font-weight:    600 !important;
  font-size:      12px !important;
  letter-spacing: 0.08em !important;
  text-transform: uppercase !important;
  color:          var(--fbc-text-muted) !important;
  text-decoration: none !important;
}

/* Day cells */
.fc .fc-daygrid-day {
  background:   var(--fbc-bg) !important;
  border-color: var(--fbc-border) !important;
  transition:   background var(--fbc-transition) !important;
}

.fc .fc-daygrid-day:hover {
  background: var(--fbc-surface) !important;
}

.fc .fc-daygrid-day.fc-day-today {
  background: rgba(79,142,247,0.07) !important;
}

.fc .fc-daygrid-day-number {
  font-size:   13px !important;
  font-weight: 500 !important;
  color:       var(--fbc-text-muted) !important;
  text-decoration: none !important;
  padding:     6px 10px !important;
}

.fc .fc-day-today .fc-daygrid-day-number {
  color:            var(--fbc-accent) !important;
  background:       var(--fbc-accent-glow) !important;
  border-radius:    50% !important;
  width:            28px !important;
  height:           28px !important;
  display:          flex !important;
  align-items:      center !important;
  justify-content:  center !important;
  margin:           4px !important;
  padding:          0 !important;
}

/* Time grid */
.fc .fc-timegrid-slot {
  height:       44px !important;
  border-color: var(--fbc-border) !important;
}

.fc .fc-timegrid-axis-cushion,
.fc .fc-timegrid-slot-label-cushion {
  font-size:  11px !important;
  font-weight: 500 !important;
  color:      var(--fbc-text-muted) !important;
  padding:    0 8px !important;
}

/* Events */
.fc .fc-event {
  border-radius:  6px !important;
  border-width:   0 !important;
  border-left:    3px solid transparent !important;
  padding:        3px 7px !important;
  cursor:         pointer !important;
  transition:     transform var(--fbc-transition), box-shadow var(--fbc-transition), filter var(--fbc-transition) !important;
  font-family:    var(--fbc-font) !important;
}

.fc .fc-event:hover {
  transform:  translateY(-1px) !important;
  box-shadow: 0 6px 20px rgba(0,0,0,0.4) !important;
  filter:     brightness(1.1) !important;
  z-index:    10 !important;
}

.fc .fc-event.fbc-status-full {
  opacity: 0.6 !important;
  cursor:  not-allowed !important;
}

.fc .fc-event.fbc-status-full:hover {
  transform: none !important;
  filter:    none !important;
}

.fc .fc-event-title {
  font-weight: 600 !important;
  font-size:   12px !important;
  white-space: nowrap !important;
  overflow:    hidden !important;
  text-overflow: ellipsis !important;
}

.fc .fc-event-time {
  font-size:  11px !important;
  font-weight: 400 !important;
  opacity:    0.85 !important;
}

/* "More" link */
.fc .fc-daygrid-more-link {
  color:       var(--fbc-accent) !important;
  font-size:   11px !important;
  font-weight: 600 !important;
}

/* Popover ("+N more") */
.fc .fc-popover {
  background:   var(--fbc-surface-2) !important;
  border:       1px solid var(--fbc-border-strong) !important;
  border-radius: var(--fbc-radius-sm) !important;
  box-shadow:   var(--fbc-shadow) !important;
}
.fc .fc-popover-header {
  background:  var(--fbc-surface) !important;
  color:       var(--fbc-text) !important;
  font-family: var(--fbc-font) !important;
  font-weight: 600 !important;
}
.fc .fc-popover-close {
  color: var(--fbc-text-muted) !important;
}

/* ── Loading Spinner ── */
#fbc-loading {
  position:        absolute;
  inset:           0;
  background:      rgba(15,17,23,0.8);
  display:         flex;
  align-items:     center;
  justify-content: center;
  z-index:         50;
  backdrop-filter: blur(4px);
  opacity:         0;
  pointer-events:  none;
  transition:      opacity var(--fbc-transition);
}

#fbc-loading.active {
  opacity:        1;
  pointer-events: all;
}

.fbc-spinner {
  width:        42px;
  height:       42px;
  border:       3px solid var(--fbc-border-strong);
  border-top-color: var(--fbc-accent);
  border-radius: 50%;
  animation:    fbc-spin 0.7s linear infinite;
}

@keyframes fbc-spin {
  to { transform: rotate(360deg); }
}

/* ── Modal Overlay ── */
#fbc-modal-overlay {
  position:        fixed;
  inset:           0;
  background:      rgba(0,0,0,0.7);
  backdrop-filter: blur(6px);
  z-index:         9999;
  display:         flex;
  align-items:     center;
  justify-content: center;
  padding:         20px;
  opacity:         0;
  pointer-events:  none;
  transition:      opacity 0.25s ease;
}

#fbc-modal-overlay.active {
  opacity:        1;
  pointer-events: all;
}

#fbc-modal {
  background:    var(--fbc-surface);
  border:        1px solid var(--fbc-border-strong);
  border-radius: var(--fbc-radius);
  box-shadow:    var(--fbc-shadow-lg);
  max-width:     480px;
  width:         100%;
  position:      relative;
  padding:       32px;
  transform:     translateY(20px) scale(0.97);
  transition:    transform 0.25s cubic-bezier(0.34,1.56,0.64,1);
}

#fbc-modal-overlay.active #fbc-modal {
  transform: translateY(0) scale(1);
}

#fbc-modal-close {
  position:   absolute;
  top:        16px;
  right:      16px;
  background: var(--fbc-surface-2);
  border:     1px solid var(--fbc-border);
  border-radius: 50%;
  width:      32px;
  height:     32px;
  color:      var(--fbc-text-muted);
  font-size:  18px;
  line-height: 1;
  cursor:     pointer;
  display:    flex;
  align-items: center;
  justify-content: center;
  transition: background var(--fbc-transition), color var(--fbc-transition);
}

#fbc-modal-close:hover {
  background: var(--fbc-red-bg);
  color:      var(--fbc-red);
}

/* Modal Content */
.fbc-modal-category {
  display:        inline-flex;
  align-items:    center;
  gap:            6px;
  font-family:    var(--fbc-font-display);
  font-size:      11px;
  font-weight:    600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color:          var(--fbc-accent);
  background:     var(--fbc-accent-glow);
  border-radius:  4px;
  padding:        4px 10px;
  margin-bottom:  14px;
}

.fbc-modal-title {
  font-family:    var(--fbc-font-display);
  font-size:      clamp(22px,4vw,28px);
  font-weight:    700;
  letter-spacing: 0.02em;
  color:          var(--fbc-text);
  margin:         0 0 20px;
  line-height:    1.2;
}

.fbc-modal-meta {
  display:       flex;
  flex-direction: column;
  gap:           10px;
  margin-bottom: 22px;
}

.fbc-modal-row {
  display:     flex;
  align-items: center;
  gap:         10px;
  font-size:   14px;
  color:       var(--fbc-text-muted);
}

.fbc-modal-row svg {
  width:      16px;
  height:     16px;
  flex-shrink: 0;
  color:      var(--fbc-accent);
}

.fbc-modal-row strong {
  color: var(--fbc-text);
  font-weight: 500;
}

/* Capacity bar */
.fbc-capacity-block {
  background:    var(--fbc-surface-2);
  border-radius: var(--fbc-radius-sm);
  padding:       16px;
  margin-bottom: 22px;
  border:        1px solid var(--fbc-border);
}

.fbc-capacity-header {
  display:       flex;
  align-items:   center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.fbc-capacity-label {
  font-size:   13px;
  font-weight: 600;
  color:       var(--fbc-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: var(--fbc-font-display);
}

.fbc-status-badge {
  display:        inline-flex;
  align-items:    center;
  gap:            6px;
  font-size:      12px;
  font-weight:    600;
  border-radius:  4px;
  padding:        4px 10px;
  font-family:    var(--fbc-font-display);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.fbc-status-badge.available { color: var(--fbc-green);  background: var(--fbc-green-bg);  }
.fbc-status-badge.limited   { color: var(--fbc-orange); background: var(--fbc-orange-bg); }
.fbc-status-badge.full      { color: var(--fbc-red);    background: var(--fbc-red-bg);    }

.fbc-progress-track {
  background:    var(--fbc-bg);
  border-radius: 100px;
  height:        8px;
  overflow:      hidden;
}

.fbc-progress-fill {
  height:        100%;
  border-radius: 100px;
  transition:    width 0.6s cubic-bezier(0.4,0,0.2,1);
}
.fbc-progress-fill.available { background: var(--fbc-green);  }
.fbc-progress-fill.limited   { background: var(--fbc-orange); }
.fbc-progress-fill.full      { background: var(--fbc-red);    }

.fbc-capacity-sub {
  font-size:  12px;
  color:      var(--fbc-text-muted);
  margin-top: 8px;
  text-align: right;
}

/* CTA Button */
.fbc-modal-cta {
  display:         block;
  width:           100%;
  padding:         14px 20px;
  background:      var(--fbc-accent);
  color:           #fff;
  border:          none;
  border-radius:   var(--fbc-radius-sm);
  font-family:     var(--fbc-font-display);
  font-size:       15px;
  font-weight:     600;
  letter-spacing:  0.06em;
  text-transform:  uppercase;
  text-align:      center;
  text-decoration: none;
  cursor:          pointer;
  transition:      background var(--fbc-transition), box-shadow var(--fbc-transition), transform var(--fbc-transition);
  box-shadow:      0 4px 16px var(--fbc-accent-glow);
}

.fbc-modal-cta:hover {
  background:  #3a7fe6;
  box-shadow:  0 6px 24px rgba(79,142,247,0.45);
  transform:   translateY(-1px);
  color:       #fff;
}

.fbc-modal-cta.disabled {
  background:    var(--fbc-surface-2);
  color:         var(--fbc-text-muted);
  cursor:        not-allowed;
  box-shadow:    none;
  transform:     none;
  pointer-events: none;
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 768px) {
  .fbc-toolbar-inner {
    flex-direction: column;
    align-items:    flex-start;
  }
  .fbc-legend { display: none; }
  #fbc-calendar-container { padding: 12px; }

  .fc .fc-toolbar {
    flex-direction: column;
    align-items:    flex-start;
    gap:            8px;
  }
  .fc .fc-toolbar-chunk { display: flex; gap: 6px; }
  .fc .fc-toolbar-title { font-size: 18px !important; }
  .fc .fc-button { padding: 6px 10px !important; font-size: 12px !important; }

  #fbc-modal { padding: 24px 20px; }
  .fbc-modal-title { font-size: 22px; }
}

@media (max-width: 480px) {
  .fc .fc-view-harness { min-height: 400px !important; }
  .fc .fc-daygrid-day-number { font-size: 11px !important; padding: 4px 6px !important; }
  .fc .fc-event-title { font-size: 10px !important; }
}

/* ── Utility: smooth page scroll when FullCalendar navigates ── */
.fc .fc-scroller { scrollbar-width: thin; scrollbar-color: var(--fbc-border-strong) transparent; }
.fc .fc-scroller::-webkit-scrollbar { width: 5px; height: 5px; }
.fc .fc-scroller::-webkit-scrollbar-thumb { background: var(--fbc-border-strong); border-radius: 3px; }