/* ===================================================
   ToolNexa Modern Date Picker & Calendar Component
   =================================================== */

/* Date Input Wrapper with Modern Calendar Icon */
.toolnexa-date-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}

.toolnexa-date-input {
  width: 100%;
  padding: 0.75rem 2.75rem 0.75rem 1rem !important;
  font-family: inherit;
  font-size: var(--fs-sm);
  color: var(--text-primary);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
  cursor: pointer;
  letter-spacing: 0.01em;
}

.toolnexa-date-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

[data-theme="dark"] .toolnexa-date-input {
  background-color: #0B0F19;
  border-color: #2E3C5A;
  color: #F8FAFC;
}

[data-theme="dark"] .toolnexa-date-input:focus {
  border-color: #818CF8;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

/* Hide native calendar picker indicator in WebKit */
.toolnexa-date-input::-webkit-calendar-picker-indicator {
  display: none !important;
  -webkit-appearance: none;
}

/* Custom Calendar Trigger Icon Inside Input */
.toolnexa-date-icon-btn {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  transition: all var(--transition-fast);
  padding: 0;
}

.toolnexa-date-icon-btn:hover {
  color: var(--primary);
  background: rgba(79, 70, 229, 0.08);
}

[data-theme="dark"] .toolnexa-date-icon-btn:hover {
  color: #A5B4FC;
  background: rgba(99, 102, 241, 0.15);
}

.toolnexa-date-icon-btn svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
}

/* ===================================================
   Calendar Dropdown / Popover Container
   =================================================== */

.tn-calendar-popover {
  position: absolute;
  z-index: 1050;
  width: 320px;
  background: #FFFFFF;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 18px;
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.12), 0 0 1px rgba(0, 0, 0, 0.1);
  padding: 1.15rem;
  font-family: inherit;
  color: var(--text-primary);
  user-select: none;
  opacity: 0;
  transform: translateY(8px) scale(0.98);
  transition: opacity 0.18s cubic-bezier(0.16, 1, 0.3, 1), transform 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
  visibility: hidden;
}

.tn-calendar-popover.tn-cal-open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
  visibility: visible;
}

[data-theme="dark"] .tn-calendar-popover {
  background: #151D2F;
  border-color: #2E3C5A;
  box-shadow: 0 24px 48px -12px rgba(0, 0, 0, 0.7), 0 0 20px rgba(99, 102, 241, 0.18);
  color: #F8FAFC;
}

/* Header: Month-Year Selector & Navigation */
.tn-cal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
}

.tn-cal-title-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  color: var(--text-primary);
  background: transparent;
  border: none;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tn-cal-title-btn:hover {
  background: rgba(79, 70, 229, 0.08);
  color: var(--primary);
}

[data-theme="dark"] .tn-cal-title-btn:hover {
  background: rgba(99, 102, 241, 0.18);
  color: #A5B4FC;
}

.tn-cal-title-btn svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  transition: transform 0.2s ease;
}

.tn-cal-title-btn.view-active svg {
  transform: rotate(180deg);
}

.tn-cal-nav-group {
  display: flex;
  align-items: center;
  gap: 4px;
}

.tn-cal-nav-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  padding: 0;
}

.tn-cal-nav-btn:hover {
  background: rgba(79, 70, 229, 0.08);
  color: var(--primary);
  border-color: rgba(79, 70, 229, 0.15);
}

[data-theme="dark"] .tn-cal-nav-btn:hover {
  background: rgba(99, 102, 241, 0.18);
  color: #A5B4FC;
  border-color: rgba(99, 102, 241, 0.3);
}

.tn-cal-nav-btn svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
}

/* ===================================================
   Weekdays Header Grid
   =================================================== */

.tn-cal-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
  margin-bottom: 6px;
  text-align: center;
}

.tn-cal-weekday {
  font-size: 11px;
  font-weight: var(--fw-semibold);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 4px 0;
}

/* ===================================================
   Days Grid
   =================================================== */

.tn-cal-days-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 3px;
  margin-bottom: 0.85rem;
}

.tn-cal-day-cell {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  border-radius: 10px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.15s ease;
  padding: 0;
}

.tn-cal-day-cell:hover:not(.disabled) {
  background: rgba(79, 70, 229, 0.08);
  color: var(--primary);
  transform: scale(1.06);
}

[data-theme="dark"] .tn-cal-day-cell:hover:not(.disabled) {
  background: rgba(99, 102, 241, 0.2);
  color: #C7D2FE;
}

/* Adjacent Month Days */
.tn-cal-day-cell.other-month {
  color: var(--text-tertiary);
  opacity: 0.45;
}

/* Today Indicator */
.tn-cal-day-cell.today {
  border-color: rgba(79, 70, 229, 0.4);
  font-weight: var(--fw-bold);
}

.tn-cal-day-cell.today::after {
  content: '';
  position: absolute;
  bottom: 3px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--primary);
}

[data-theme="dark"] .tn-cal-day-cell.today {
  border-color: rgba(129, 140, 248, 0.45);
}

[data-theme="dark"] .tn-cal-day-cell.today::after {
  background: #818CF8;
}

/* Selected Day */
.tn-cal-day-cell.selected {
  background: linear-gradient(135deg, #4F46E5 0%, #6366F1 100%) !important;
  color: #FFFFFF !important;
  font-weight: var(--fw-bold);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.38);
  transform: scale(1.05);
}

.tn-cal-day-cell.selected::after {
  display: none;
}

/* ===================================================
   Fast Month & Year Selector View
   =================================================== */

.tn-cal-picker-view {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 0.85rem;
  max-height: 220px;
  overflow-y: auto;
  padding: 4px;
}

.tn-cal-picker-item {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 6px;
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tn-cal-picker-item:hover {
  border-color: var(--primary);
  background: rgba(79, 70, 229, 0.08);
  color: var(--primary);
  transform: translateY(-1px);
}

[data-theme="dark"] .tn-cal-picker-item {
  background: #0B0F19;
  border-color: #2E3C5A;
}

[data-theme="dark"] .tn-cal-picker-item:hover {
  border-color: #818CF8;
  background: rgba(99, 102, 241, 0.2);
  color: #C7D2FE;
}

.tn-cal-picker-item.selected {
  background: linear-gradient(135deg, #4F46E5 0%, #6366F1 100%) !important;
  border-color: transparent !important;
  color: #FFFFFF !important;
  font-weight: var(--fw-bold);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

/* ===================================================
   Calendar Footer Action Bar
   =================================================== */

.tn-cal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
  gap: 8px;
}

[data-theme="dark"] .tn-cal-footer {
  border-top-color: #2E3C5A;
}

.tn-cal-action-btn {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tn-cal-btn-clear {
  background: transparent;
  color: var(--text-tertiary);
}

.tn-cal-btn-clear:hover {
  color: var(--danger, #EF4444);
  background: rgba(239, 68, 68, 0.08);
}

.tn-cal-btn-today {
  background: rgba(79, 70, 229, 0.08);
  color: var(--primary);
  border-color: rgba(79, 70, 229, 0.2);
}

.tn-cal-btn-today:hover {
  background: var(--primary);
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(79, 70, 229, 0.3);
}

[data-theme="dark"] .tn-cal-btn-today {
  background: rgba(99, 102, 241, 0.15);
  border-color: rgba(99, 102, 241, 0.3);
  color: #A5B4FC;
}

[data-theme="dark"] .tn-cal-btn-today:hover {
  background: #6366F1;
  color: #FFFFFF;
}

/* Quick Presets Bar */
.tn-cal-presets {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.tn-cal-preset-pill {
  font-size: 11px;
  font-weight: var(--fw-medium);
  padding: 3px 9px;
  border-radius: var(--radius-full);
  background: rgba(79, 70, 229, 0.06);
  border: 1px solid rgba(79, 70, 229, 0.15);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tn-cal-preset-pill:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
}

[data-theme="dark"] .tn-cal-preset-pill {
  background: rgba(99, 102, 241, 0.1);
  border-color: rgba(99, 102, 241, 0.25);
  color: #94A3B8;
}

[data-theme="dark"] .tn-cal-preset-pill:hover {
  background: rgba(99, 102, 241, 0.22);
  color: #E2E8F0;
  border-color: #818CF8;
}

/* ===================================================
   Mobile Modal / Bottom-Sheet Mode (≤480px)
   =================================================== */

.tn-cal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(11, 15, 25, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 1040;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.tn-cal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

@media (max-width: 480px) {
  .tn-calendar-popover {
    position: fixed !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) scale(0.95) !important;
    width: calc(100vw - 32px) !important;
    max-width: 340px !important;
    border-radius: 20px !important;
    z-index: 1050 !important;
  }

  .tn-calendar-popover.tn-cal-open {
    transform: translate(-50%, -50%) scale(1) !important;
  }

  .tn-cal-day-cell {
    height: 40px;
    font-size: var(--fs-sm);
  }
}