/* =============================================================================
   Janus Web Interface - Calendar View & FullCalendar v6 Theme (ADR-041 P4)
   ============================================================================= */

/* Main Calendar Section Container */
#view-calendar {
  display: none;
  flex-direction: column;
  gap: 16px;
  width: 100%;
}

#view-calendar.active {
  display: flex;
}

/* Header & Stat Badges */
.calendar-header-card {
  background: var(--janus-surface);
  border: 1px solid var(--janus-border);
  border-radius: var(--radius-md, 10px);
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  box-shadow: var(--shadow-card);
}

.calendar-header-title-area {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.calendar-header-title {
  font-family: 'Outfit', sans-serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--janus-text);
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
}

.calendar-header-subtitle {
  font-size: 13px;
  color: var(--janus-muted);
  margin: 0;
}

.calendar-stats-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.calendar-stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--janus-bg);
  border: 1px solid var(--janus-border);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 500;
  color: var(--janus-text);
}

.calendar-stat-pill.stat-primary {
  border-color: rgba(0, 240, 255, 0.4);
  color: var(--janus-project);
}

.calendar-stat-pill.stat-warning {
  border-color: rgba(245, 158, 11, 0.4);
  color: var(--janus-warning);
}

.calendar-stat-pill.stat-danger {
  border-color: rgba(239, 68, 68, 0.4);
  color: var(--janus-danger);
}

.calendar-stat-pill.stat-reminders {
  border-color: rgba(167, 118, 228, 0.4);
  color: var(--janus-profile);
}

.calendar-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Two-column Layout: Filter Sidebar + Main Calendar */
.calendar-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
}

@media (max-width: 1024px) {
  .calendar-layout {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Calendar Filter Sidebar */
.calendar-sidebar {
  background: var(--janus-surface);
  border: 1px solid var(--janus-border);
  border-radius: var(--radius-md, 10px);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  box-shadow: var(--shadow-card);
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
  overflow: hidden;
}

.cal-filter-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cal-filter-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--janus-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cal-filter-search-input {
  width: 100%;
  background: var(--janus-bg);
  border: 1px solid var(--janus-border);
  border-radius: var(--radius-sm, 6px);
  color: var(--janus-text);
  padding: 8px 12px;
  font-size: 13px;
  outline: none;
  transition: border-color 0.2s;
}

.cal-filter-search-input:focus {
  border-color: var(--janus-project);
}

.cal-chips-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.cal-chip-btn {
  background: var(--janus-bg);
  border: 1px solid var(--janus-border);
  color: var(--janus-muted);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.cal-chip-btn:hover {
  border-color: var(--janus-border-focus);
  color: var(--janus-text);
}

.cal-chip-btn.active {
  background: rgba(0, 240, 255, 0.15);
  border-color: var(--janus-project);
  color: var(--janus-project);
  font-weight: 600;
}

/* Custom Toggle Switch */
.cal-switch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 0;
  cursor: pointer;
  user-select: none;
}

.cal-switch-label {
  font-size: 13px;
  color: var(--janus-text);
  display: flex;
  align-items: center;
  gap: 6px;
}

.cal-switch {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 20px;
}

.cal-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.cal-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--janus-border);
  transition: .3s;
  border-radius: 20px;
}

.cal-slider:before {
  position: absolute;
  content: "";
  height: 14px;
  width: 14px;
  left: 3px;
  bottom: 3px;
  background-color: #fff;
  transition: .3s;
  border-radius: 50%;
}

input:checked + .cal-slider {
  background-color: var(--janus-project);
}

input:checked + .cal-slider:before {
  transform: translateX(16px);
}

/* Undated Tasks Drawer */
.cal-undated-box {
  border-top: 1px solid var(--janus-border);
  padding-top: 14px;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
  overflow: hidden;
}

.cal-undated-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  color: var(--janus-text);
  width: 100%;
  box-sizing: border-box;
  user-select: none;
}

.cal-undated-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 10px;
  max-height: 220px;
  overflow-y: auto;
  overflow-x: hidden;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
  overscroll-behavior: contain;
}

/* Custom compact scrollbar for undated list */
.cal-undated-list::-webkit-scrollbar {
  width: 4px;
}

.cal-undated-list::-webkit-scrollbar-thumb {
  background: var(--janus-border);
  border-radius: 4px;
}

.cal-undated-item {
  background: var(--janus-bg);
  border: 1px solid var(--janus-border);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 12px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  min-height: 54px;
  flex-shrink: 0;
  transition: transform 0.15s, border-color 0.15s;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
  overflow: hidden;
}

.cal-undated-item:hover {
  transform: translateX(2px);
  border-color: var(--janus-project);
}

.cal-undated-title {
  color: var(--janus-text);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
  display: block;
}

.cal-undated-meta {
  font-size: 10px;
  color: var(--janus-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
}

.cal-undated-meta-proj {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1 1 auto;
  min-width: 0;
}

.cal-undated-meta-action {
  flex: 0 0 auto;
  white-space: nowrap;
  color: var(--janus-project);
  font-weight: 500;
}

.cal-undated-meta-review {
  flex: 0 0 auto;
  background: rgba(245, 158, 11, 0.18);
  color: var(--janus-warning, #f59e0b);
  border: 1px solid rgba(245, 158, 11, 0.35);
  border-radius: 3px;
  padding: 1px 4px;
  font-size: 9px;
  font-weight: 600;
  white-space: nowrap;
}

/* Main Calendar Pane */
.calendar-main {
  background: var(--janus-surface);
  border: 1px solid var(--janus-border);
  border-radius: var(--radius-md, 10px);
  padding: 18px;
  box-shadow: var(--shadow-card);
  min-height: 700px;
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
  overflow-x: hidden;
}

#janus-calendar {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  flex: 1;
}

/* =============================================================================
   FullCalendar v6 Custom Theme Surcharges (Janus Dark Theme)
   ============================================================================= */

:root {
  --fc-border-color: var(--janus-border, #222B42);
  --fc-page-bg-color: var(--janus-surface, #121828);
  --fc-neutral-bg-color: var(--janus-bg, #0A0F1D);
  --fc-neutral-text-color: var(--janus-muted, #94A3B8);
  --fc-today-bg-color: rgba(0, 240, 255, 0.05);
  --fc-now-indicator-color: #EF4444;
  --fc-list-event-hover-bg-color: var(--janus-surface-hover, #1A2235);
  --fc-event-border-color: transparent;
  --fc-button-bg-color: var(--janus-surface, #121828);
  --fc-button-border-color: var(--janus-border, #222B42);
  --fc-button-text-color: var(--janus-text, #F1F5F9);
  --fc-button-hover-bg-color: var(--janus-surface-hover, #1A2235);
  --fc-button-hover-border-color: var(--janus-border-focus, #3A4768);
  --fc-button-active-bg-color: rgba(0, 240, 255, 0.2);
  --fc-button-active-border-color: var(--janus-project, #00F0FF);
}

.fc {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--janus-text);
}

.fc .fc-toolbar {
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.fc .fc-toolbar-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--janus-text);
  letter-spacing: -0.2px;
}

.fc .fc-button {
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 6px;
  text-transform: capitalize;
  box-shadow: none;
  transition: all 0.15s ease;
}

.fc .fc-button:focus {
  box-shadow: 0 0 0 2px rgba(0, 240, 255, 0.25) !important;
}

.fc .fc-button-primary:not(:disabled).fc-button-active,
.fc .fc-button-primary:not(:disabled):active {
  background-color: rgba(0, 240, 255, 0.18);
  border-color: var(--janus-project);
  color: var(--janus-project);
}

.fc .fc-col-header-cell {
  background: var(--janus-bg);
  padding: 8px 0;
  border-color: var(--janus-border);
}

.fc .fc-col-header-cell-cushion {
  font-size: 12px;
  font-weight: 600;
  color: var(--janus-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-decoration: none !important;
}

.fc .fc-daygrid-day-number {
  font-size: 12px;
  font-weight: 600;
  color: var(--janus-muted);
  padding: 6px 8px;
  text-decoration: none !important;
}

.fc .fc-day-today .fc-daygrid-day-number {
  color: var(--janus-project);
  font-weight: 700;
}

.fc .fc-daygrid-day.fc-day-today {
  background-color: rgba(0, 240, 255, 0.04) !important;
}

/* Event Pills & Cards */
.fc-event {
  border-radius: 5px !important;
  padding: 2px 4px !important;
  font-size: 11px !important;
  font-weight: 500 !important;
  cursor: pointer !important;
  border: 1px solid transparent !important;
  transition: transform 0.12s ease, box-shadow 0.12s ease !important;
  margin-bottom: 2px !important;
  overflow: hidden !important;
}

.fc-event:hover {
  transform: translateY(-1px) scale(1.01) !important;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3) !important;
  z-index: 10 !important;
}

.fc-event-main,
.fc-h-event .fc-event-main,
.fc-v-event .fc-event-main {
  color: inherit !important;
}

.cal-event-inner {
  display: flex;
  align-items: center;
  gap: 5px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  padding: 1px 2px;
  width: 100%;
}

/* Priority & Status Color Schemes */
.cal-event-urgent {
  background: rgba(239, 68, 68, 0.22) !important;
  border-left: 3px solid #EF4444 !important;
  color: #FCA5A5 !important;
}

.cal-event-high {
  background: rgba(249, 115, 22, 0.22) !important;
  border-left: 3px solid #F97316 !important;
  color: #FDBA74 !important;
}

.cal-event-medium {
  background: rgba(0, 240, 255, 0.18) !important;
  border-left: 3px solid #00F0FF !important;
  color: #67E8F9 !important;
}

.cal-event-low {
  background: rgba(100, 116, 139, 0.22) !important;
  border-left: 3px solid #64748B !important;
  color: #CBD5E1 !important;
}

.cal-event-waiting {
  background: rgba(249, 115, 22, 0.18) !important;
  border-left: 3px solid #F97316 !important;
  color: #FDBA74 !important;
}

.cal-event-done {
  background: rgba(16, 185, 129, 0.18) !important;
  border-left: 3px solid #10B981 !important;
  color: #86EFAC !important;
  text-decoration: line-through !important;
  opacity: 0.75 !important;
}

.cal-event-cancelled {
  background: rgba(71, 85, 105, 0.18) !important;
  border-left: 3px solid #475569 !important;
  color: #94A3B8 !important;
  text-decoration: line-through !important;
  opacity: 0.6 !important;
}

/* 🧪 ADR-042/043: Tasks in QA Review Buffer */
.cal-event-review {
  background: rgba(245, 158, 11, 0.22) !important;
  border-left: 3px solid #F59E0B !important;
  color: #FCD34D !important;
}

/* Event Inner Elements */
.cal-event-badge-project {
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 3px;
  padding: 1px 4px;
  letter-spacing: 0.3px;
}

.cal-event-icon-reminder {
  font-size: 11px;
  line-height: 1;
}

.cal-event-icon-alarm {
  font-size: 11px;
  line-height: 1;
  animation: pulse-alarm 1.5s infinite;
}

.cal-event-icon-review {
  font-size: 11px;
  line-height: 1;
}

.cal-event-icon-meeting {
  font-size: 11px;
  line-height: 1;
}

.cal-event-badge-tester {
  font-size: 9px;
  font-weight: 600;
  background: rgba(245, 158, 11, 0.22);
  color: #FCD34D;
  border-radius: 3px;
  padding: 1px 4px;
  letter-spacing: 0.2px;
}

@keyframes pulse-alarm {
  0% { transform: scale(1); }
  50% { transform: scale(1.2); }
  100% { transform: scale(1); }
}

/* List View (Agenda) Customization */
.fc-list-table {
  border-color: var(--janus-border) !important;
}

.fc-list-day-cushion {
  background-color: var(--janus-bg) !important;
  color: var(--janus-text) !important;
}

.fc-list-event {
  cursor: pointer !important;
  transition: background-color 0.15s !important;
}

.fc-list-event:hover td {
  background-color: var(--janus-surface-hover) !important;
}

.fc-list-event-dot {
  border-color: var(--janus-project) !important;
}

.fc-list-event-title a {
  color: var(--janus-text) !important;
  text-decoration: none !important;
  font-weight: 500 !important;
}

.fc-list-empty {
  background: var(--janus-surface) !important;
  color: var(--janus-muted) !important;
  padding: 40px !important;
  font-size: 14px !important;
}

/* =============================================================================
   Light Theme Contrast Enhancements (:root[data-theme="light"])
   ============================================================================= */

:root[data-theme="light"] {
  --fc-border-color: #E2E8F0;
  --fc-page-bg-color: #FFFFFF;
  --fc-neutral-bg-color: #F8FAFC;
  --fc-neutral-text-color: #475569;
  --fc-today-bg-color: rgba(8, 145, 178, 0.06);
  --fc-now-indicator-color: #DC2626;
  --fc-list-event-hover-bg-color: #F1F5F9;
  --fc-button-bg-color: #FFFFFF;
  --fc-button-border-color: #CBD5E1;
  --fc-button-text-color: #334155;
  --fc-button-hover-bg-color: #F8FAFC;
  --fc-button-hover-border-color: #94A3B8;
  --fc-button-active-bg-color: #0891B2;
  --fc-button-active-border-color: #0891B2;
}

:root[data-theme="light"] .fc .fc-toolbar-title {
  color: #0F172A;
  font-weight: 700;
}

:root[data-theme="light"] .fc .fc-button {
  background-color: #FFFFFF;
  border-color: #CBD5E1;
  color: #334155;
}

:root[data-theme="light"] .fc .fc-button:hover {
  background-color: #F8FAFC;
  border-color: #94A3B8;
  color: #0F172A;
}

:root[data-theme="light"] .fc .fc-button-primary:not(:disabled).fc-button-active,
:root[data-theme="light"] .fc .fc-button-primary:not(:disabled):active {
  background-color: #0891B2 !important;
  border-color: #0891B2 !important;
  color: #FFFFFF !important;
  box-shadow: 0 1px 3px rgba(8, 145, 178, 0.3) !important;
}

:root[data-theme="light"] .fc .fc-col-header-cell {
  background: #F8FAFC;
  border-color: #E2E8F0;
}

:root[data-theme="light"] .fc .fc-col-header-cell-cushion {
  color: #475569;
  font-weight: 700;
}

:root[data-theme="light"] .fc .fc-daygrid-day-number {
  color: #64748B;
  font-weight: 600;
}

:root[data-theme="light"] .fc .fc-day-today .fc-daygrid-day-number {
  color: #0891B2;
  font-weight: 800;
}

:root[data-theme="light"] .fc .fc-daygrid-day.fc-day-today {
  background-color: rgba(8, 145, 178, 0.05) !important;
}

:root[data-theme="light"] .fc .fc-daygrid-more-link {
  color: #0891B2 !important;
  font-weight: 700 !important;
}

/* Event Pills & Cards in Light Mode — Crisp, readable, high-contrast colors */
:root[data-theme="light"] .cal-event-urgent,
:root[data-theme="light"] .cal-event-urgent *,
:root[data-theme="light"] .cal-event-urgent .cal-event-title-text,
:root[data-theme="light"] .cal-event-urgent .cal-event-badge-project {
  color: #991B1B !important;
}
:root[data-theme="light"] .cal-event-urgent {
  background: #FEE2E2 !important;
  border-left: 4px solid #DC2626 !important;
  border-top: 1px solid #FECACA !important;
  border-right: 1px solid #FECACA !important;
  border-bottom: 1px solid #FECACA !important;
}

:root[data-theme="light"] .cal-event-high,
:root[data-theme="light"] .cal-event-high *,
:root[data-theme="light"] .cal-event-high .cal-event-title-text,
:root[data-theme="light"] .cal-event-high .cal-event-badge-project {
  color: #9A3412 !important;
}
:root[data-theme="light"] .cal-event-high {
  background: #FFEDD5 !important;
  border-left: 4px solid #EA580C !important;
  border-top: 1px solid #FED7AA !important;
  border-right: 1px solid #FED7AA !important;
  border-bottom: 1px solid #FED7AA !important;
}

:root[data-theme="light"] .cal-event-medium,
:root[data-theme="light"] .cal-event-medium *,
:root[data-theme="light"] .cal-event-medium .cal-event-title-text,
:root[data-theme="light"] .cal-event-medium .cal-event-badge-project {
  color: #0369A1 !important;
}
:root[data-theme="light"] .cal-event-medium {
  background: #E0F2FE !important;
  border-left: 4px solid #0284C7 !important;
  border-top: 1px solid #BAE6FD !important;
  border-right: 1px solid #BAE6FD !important;
  border-bottom: 1px solid #BAE6FD !important;
}

:root[data-theme="light"] .cal-event-low,
:root[data-theme="light"] .cal-event-low *,
:root[data-theme="light"] .cal-event-low .cal-event-title-text,
:root[data-theme="light"] .cal-event-low .cal-event-badge-project {
  color: #1E293B !important;
}
:root[data-theme="light"] .cal-event-low {
  background: #F1F5F9 !important;
  border-left: 4px solid #64748B !important;
  border-top: 1px solid #E2E8F0 !important;
  border-right: 1px solid #E2E8F0 !important;
  border-bottom: 1px solid #E2E8F0 !important;
}

:root[data-theme="light"] .cal-event-waiting,
:root[data-theme="light"] .cal-event-waiting *,
:root[data-theme="light"] .cal-event-waiting .cal-event-title-text,
:root[data-theme="light"] .cal-event-waiting .cal-event-badge-project {
  color: #9A3412 !important;
}
:root[data-theme="light"] .cal-event-waiting {
  background: #FFEDD5 !important;
  border-left: 4px solid #EA580C !important;
  border-top: 1px solid #FED7AA !important;
  border-right: 1px solid #FED7AA !important;
  border-bottom: 1px solid #FED7AA !important;
}

:root[data-theme="light"] .cal-event-done,
:root[data-theme="light"] .cal-event-done *,
:root[data-theme="light"] .cal-event-done .cal-event-title-text,
:root[data-theme="light"] .cal-event-done .cal-event-badge-project {
  color: #166534 !important;
}
:root[data-theme="light"] .cal-event-done {
  background: #DCFCE7 !important;
  border-left: 4px solid #16A34A !important;
  border-top: 1px solid #BBF7D0 !important;
  border-right: 1px solid #BBF7D0 !important;
  border-bottom: 1px solid #BBF7D0 !important;
  text-decoration: line-through !important;
  opacity: 0.85 !important;
}

:root[data-theme="light"] .cal-event-cancelled,
:root[data-theme="light"] .cal-event-cancelled *,
:root[data-theme="light"] .cal-event-cancelled .cal-event-title-text,
:root[data-theme="light"] .cal-event-cancelled .cal-event-badge-project {
  color: #64748B !important;
}
:root[data-theme="light"] .cal-event-cancelled {
  background: #F1F5F9 !important;
  border-left: 4px solid #94A3B8 !important;
  border-top: 1px solid #E2E8F0 !important;
  border-right: 1px solid #E2E8F0 !important;
  border-bottom: 1px solid #E2E8F0 !important;
  text-decoration: line-through !important;
  opacity: 0.7 !important;
}

/* 🧪 ADR-042/043: Tasks in Review Buffer in Light Mode */
:root[data-theme="light"] .cal-event-review,
:root[data-theme="light"] .cal-event-review *,
:root[data-theme="light"] .cal-event-review .cal-event-title-text,
:root[data-theme="light"] .cal-event-review .cal-event-badge-project {
  color: #B45309 !important;
}
:root[data-theme="light"] .cal-event-review {
  background: #FEF3C7 !important;
  border-left: 4px solid #D97706 !important;
  border-top: 1px solid #FDE68A !important;
  border-right: 1px solid #FDE68A !important;
  border-bottom: 1px solid #FDE68A !important;
}

:root[data-theme="light"] .cal-event-badge-tester {
  background: #FDE68A !important;
  color: #92400E !important;
  border: 1px solid #F59E0B !important;
}

/* Event Inner Elements in Light Mode */
:root[data-theme="light"] .fc-event,
:root[data-theme="light"] .fc-event-main,
:root[data-theme="light"] .cal-event-inner {
  color: #0F172A !important;
  font-weight: 600 !important;
}

:root[data-theme="light"] .cal-event-title-text {
  font-weight: 600 !important;
}

:root[data-theme="light"] .cal-event-badge-project {
  background: rgba(15, 23, 42, 0.08) !important;
  border: 1px solid rgba(15, 23, 42, 0.18) !important;
  font-weight: 700 !important;
}

:root[data-theme="light"] .fc-event:hover {
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.12) !important;
}

/* List View (Agenda) in Light Mode */
:root[data-theme="light"] .fc-list-table {
  border-color: #E2E8F0 !important;
}

:root[data-theme="light"] .fc-list-day-cushion {
  background-color: #F8FAFC !important;
  color: #0F172A !important;
}

:root[data-theme="light"] .fc-list-event:hover td {
  background-color: #F1F5F9 !important;
}

:root[data-theme="light"] .fc-list-event-title a {
  color: #0F172A !important;
}

:root[data-theme="light"] .fc-list-empty {
  background: #FFFFFF !important;
  color: #64748B !important;
}

/* Sidebar & Filters in Light Mode */
:root[data-theme="light"] .calendar-header-card,
:root[data-theme="light"] .calendar-sidebar,
:root[data-theme="light"] .calendar-main {
  background: #FFFFFF;
  border-color: #E2E8F0;
  box-shadow: var(--shadow-card);
}

:root[data-theme="light"] .cal-filter-search-input {
  background: #F8FAFC;
  border-color: #CBD5E1;
  color: #0F172A;
}

:root[data-theme="light"] .cal-filter-search-input:focus {
  border-color: #0891B2;
}

:root[data-theme="light"] .cal-chip-btn {
  background: #F8FAFC;
  border-color: #E2E8F0;
  color: #475569;
}

:root[data-theme="light"] .cal-chip-btn:hover {
  background: #F1F5F9;
  border-color: #CBD5E1;
  color: #0F172A;
}

:root[data-theme="light"] .cal-chip-btn.active {
  background: #E0F2FE;
  border-color: #0284C7;
  color: #0369A1;
}

:root[data-theme="light"] .cal-undated-item {
  background: #F8FAFC;
  border-color: #E2E8F0;
}

:root[data-theme="light"] .cal-undated-item:hover {
  border-color: #0891B2;
}

:root[data-theme="light"] .cal-undated-title {
  color: #0F172A;
}

:root[data-theme="light"] .cal-undated-meta {
  color: #64748B;
}

/* =============================================================================
   Mobile & Responsive Adjustments (ADR-041 P4)
   ============================================================================= */

@media (max-width: 768px) {
  #view-calendar {
    gap: 12px;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    overflow-x: hidden;
  }

  .calendar-header-card {
    padding: 12px 14px;
    gap: 12px;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
  }

  .calendar-header-title {
    font-size: 17px;
  }

  .calendar-stats-row {
    gap: 6px;
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }

  .calendar-stat-pill {
    font-size: 11px;
    padding: 3px 8px;
  }

  .calendar-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }

  .calendar-sidebar {
    padding: 12px 14px;
    gap: 14px;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
  }

  .cal-undated-box {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
  }

  .cal-undated-list {
    max-height: 180px;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
  }

  .cal-undated-item {
    min-height: 52px;
    flex-shrink: 0;
    padding: 8px 10px;
  }

  .calendar-main {
    padding: 10px;
    min-height: 520px;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
    overflow-x: auto;
  }

  /* FullCalendar mobile toolbar stacking & scaling */
  .fc .fc-toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }

  .fc .fc-toolbar-chunk {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    width: 100%;
  }

  .fc .fc-toolbar-title {
    font-size: 1.1rem;
    text-align: center;
    width: 100%;
  }

  .fc .fc-button {
    padding: 6px 9px;
    font-size: 11px;
  }

  .fc .fc-button-group {
    display: inline-flex;
    flex-wrap: wrap;
  }

  /* Agenda list view adjustments */
  .fc .fc-list-event-time {
    white-space: nowrap;
    padding-left: 8px;
    padding-right: 8px;
  }

  .fc .fc-list-event-title {
    padding-left: 8px;
    padding-right: 8px;
  }
}

@media (max-width: 480px) {
  .calendar-header-card {
    padding: 10px 12px;
  }

  .calendar-stat-pill {
    flex: 1 1 calc(50% - 6px);
    justify-content: center;
  }

  .cal-chip-btn {
    padding: 3px 8px;
    font-size: 10.5px;
  }

  .cal-undated-list {
    max-height: 160px;
  }
}