/* ===============================================
   Nepali Date Picker - Modern Production Ready
   =============================================== */

:root {
  --npd-primary: #3b82f6;
  --npd-primary-hover: #2563eb;
  --npd-primary-light: #dbeafe;
  --npd-secondary: #8b5cf6;
  --npd-success: #10b981;
  --npd-danger: #ef4444;
  --npd-warning: #f59e0b;

  --npd-bg: #ffffff;
  --npd-bg-secondary: #f9fafb;
  --npd-bg-hover: #f3f4f6;
  --npd-text: #1f2937;
  --npd-text-muted: #6b7280;
  --npd-text-light: #9ca3af;

  --npd-border: #e5e7eb;
  --npd-border-focus: #3b82f6;
  --npd-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --npd-shadow:
    0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --npd-shadow-lg:
    0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  --npd-radius: 0.5rem;
  --npd-radius-sm: 0.375rem;
  --npd-radius-lg: 0.75rem;
  --npd-radius-full: 9999px;

  --npd-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --npd-transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);

  --npd-z-index: 1000;
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
  :root {
    --npd-bg: #1f2937;
    --npd-bg-secondary: #111827;
    --npd-bg-hover: #374151;
    --npd-text: #f9fafb;
    --npd-text-muted: #9ca3af;
    --npd-text-light: #6b7280;
    --npd-border: #374151;
    --npd-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --npd-shadow:
      0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --npd-shadow-lg:
      0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
  }
}

[data-theme="light"] {
  --npd-bg: #ffffff;
  --npd-bg-secondary: #f9fafb;
  --npd-bg-hover: #f3f4f6;
  --npd-text: #1f2937;
  --npd-text-muted: #6b7280;
  --npd-text-light: #9ca3af;
  --npd-border: #e5e7eb;
}

[data-theme="dark"] {
  --npd-bg: #1f2937;
  --npd-bg-secondary: #111827;
  --npd-bg-hover: #374151;
  --npd-text: #f9fafb;
  --npd-text-muted: #9ca3af;
  --npd-text-light: #6b7280;
  --npd-border: #374151;
  --npd-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --npd-shadow:
    0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --npd-shadow-lg:
    0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
}

/* ===============================================
   Input Styling
   =============================================== */

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

.npd-input {
  display: block;
  width: 100%;
  padding: 0.625rem 1rem;
  font-size: 0.875rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--npd-text);
  background-color: var(--npd-bg);
  background-clip: padding-box;
  border: 1px solid var(--npd-border);
  border-radius: var(--npd-radius);
  transition: var(--npd-transition);
  cursor: pointer;
}

.npd-input:hover {
  border-color: var(--npd-primary);
}

.npd-input:focus {
  color: var(--npd-text);
  background-color: var(--npd-bg);
  border-color: var(--npd-border-focus);
  outline: 0;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Wrapper for Input + Icon */
.npd-input-wrapper {
  position: relative;
  display: block;
  width: 100%;
}

.npd-input-wrapper .npd-input {
  padding-right: 2.5rem; /* Space for icon */
}

/* Calendar Icon */
.npd-icon-btn {
  position: absolute;
  top: 50%;
  right: 0.5rem;
  transform: translateY(-50%);
  background: none;
  border: none;
  padding: 0.25rem;
  cursor: pointer;
  color: var(--npd-text-light);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--npd-radius-sm);
  transition: var(--npd-transition-fast);
}

.npd-icon-btn:hover {
  background: var(--npd-bg-hover);
  color: var(--npd-primary);
}

.npd-icon-btn svg {
  width: 1.25rem;
  height: 1.25rem;
}

.npd-input::placeholder {
  color: var(--npd-text-light);
  opacity: 1;
}

/* ===============================================
   Picker Container
   =============================================== */

.npd-picker {
  position: fixed;
  display: flex;
  flex-direction: column;
  min-width: 320px;
  background: var(--npd-bg);
  border: 1px solid var(--npd-border);
  border-radius: var(--npd-radius-lg);
  box-shadow: var(--npd-shadow-lg);
  padding: 1.25rem;
  z-index: var(--npd-z-index);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-0.5rem) scale(0.95);
  transition: var(--npd-transition);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
}

.npd-picker.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.npd-picker.npd-position-top {
  transform: translateY(0.5rem) scale(0.95);
}

.npd-picker.npd-position-top.active {
  transform: translateY(0) scale(1);
}

/* ===============================================
   Header
   =============================================== */

.npd-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  gap: 1rem;
}

.npd-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: transparent;
  border: none;
  border-radius: var(--npd-radius);
  font-size: 1rem;
  font-weight: 600;
  color: var(--npd-text);
  cursor: pointer;
  transition: var(--npd-transition-fast);
}

.npd-title:hover {
  background: var(--npd-bg-hover);
}

.npd-title-icon {
  width: 1rem;
  height: 1rem;
  transition: var(--npd-transition-fast);
}

.npd-title:hover .npd-title-icon {
  transform: translateY(2px);
}

.npd-nav {
  display: flex;
  gap: 0.5rem;
}

.npd-nav-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  background: var(--npd-bg-secondary);
  border: 1px solid var(--npd-border);
  border-radius: var(--npd-radius);
  cursor: pointer;
  transition: var(--npd-transition-fast);
}

.npd-nav-btn svg {
  width: 1rem;
  height: 1rem;
  color: var(--npd-text-muted);
  transition: var(--npd-transition-fast);
}

.npd-nav-btn:hover {
  background: var(--npd-primary);
  border-color: var(--npd-primary);
}

.npd-nav-btn:hover svg {
  color: white;
}

.npd-nav-btn:active {
  transform: scale(0.95);
}

/* ===============================================
   Body / Views
   =============================================== */

.npd-body {
  position: relative;
  min-height: 280px;
  margin-bottom: 1rem;
}

.npd-view {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  opacity: 0;
  visibility: hidden;
  transform: scale(0.95);
  transition: var(--npd-transition);
}

.npd-view.active {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
  position: relative;
}

/* Days View */
.npd-days-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0; /* Removed gap for continuous range look */
  row-gap: 2px;
}

.npd-weekday {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 0;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--npd-text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.npd-weekday.holiday {
  color: var(--npd-danger);
}

/* Modern Day Styling */
.npd-day {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: var(--npd-radius-sm); /* Default to slightly rounded square */
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--npd-text);
  cursor: pointer;
  transition: var(--npd-transition-fast);
  position: relative;
  margin: 1px 0; /* Tiny vertical margin */
}

/* Range Styling */
/* Start of Range */
.npd-day.range-start {
  background: var(--npd-primary);
  color: white;
  border-radius: var(--npd-radius-full) 0 0 var(--npd-radius-full);
  position: relative;
  z-index: 2;
}

/* End of Range */
.npd-day.range-end {
  background: var(--npd-primary);
  color: white;
  border-radius: 0 var(--npd-radius-full) var(--npd-radius-full) 0;
  position: relative;
  z-index: 2;
}

/* Middle of Range */
.npd-day.in-range:not(.range-start):not(.range-end) {
  background: var(--npd-primary-light);
  color: var(--npd-primary);
  border-radius: 0;
  position: relative;
  z-index: 1;
}

/* Single Point Range OR Start=End */
.npd-day.range-only,
.npd-day.range-start.range-end {
  border-radius: var(--npd-radius-full);
}

/* Selected State (Non-Range or Range Start/End) */
.npd-day.selected {
  background: var(--npd-primary);
  color: white !important;
  font-weight: 700;
}

/* Hover States */
/* Range middle hover */
.npd-day.in-range:not(.range-start):not(.range-end):hover {
  background: var(--npd-primary-light);
  filter: brightness(0.95);
}

/* General hover for non-selected items */
.npd-day:not(.selected):not(.range-start):not(.range-end):not(.in-range):not(
    .npd-empty
  ):hover {
  background: var(--npd-bg-secondary);
  color: var(--npd-text);
}

.npd-day.holiday {
  color: var(--npd-danger);
  font-weight: 600;
}

.npd-day.npd-overflow {
  color: var(--npd-text-light);
  opacity: 0.5;
  cursor: pointer;
}

.npd-day.npd-overflow:hover {
  opacity: 0.8;
  background: var(--npd-bg-secondary);
}

.npd-day.npd-empty {
  cursor: default;
  opacity: 0;
}

.npd-day:focus-visible {
  outline: 2px solid var(--npd-primary);
  outline-offset: 2px;
}

/* Today indicator */
.npd-day.today {
  border: 1px solid var(--npd-primary);
  font-weight: 700;
  color: var(--npd-primary);
}

.npd-day.today.selected {
  background: var(--npd-primary);
  color: white;
  border-color: var(--npd-primary);
}

.npd-day.today::before {
  display: none;
}

.npd-day.today.selected {
  background: var(--npd-primary);
  color: white;
  border-color: var(--npd-primary);
}

/* Months View */
.npd-months-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.npd-month {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: var(--npd-bg-secondary);
  border: 1px solid var(--npd-border);
  border-radius: var(--npd-radius);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--npd-text);
  cursor: pointer;
  transition: var(--npd-transition-fast);
}

.npd-month:hover {
  background: var(--npd-primary-light);
  border-color: var(--npd-primary);
  color: var(--npd-primary);
  transform: translateY(-2px);
}

.npd-month.selected {
  background: var(--npd-primary);
  border-color: var(--npd-primary);
  color: white;
}

/* Years View */
.npd-years-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.npd-year {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: var(--npd-bg-secondary);
  border: 1px solid var(--npd-border);
  border-radius: var(--npd-radius);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--npd-text);
  cursor: pointer;
  transition: var(--npd-transition-fast);
}

.npd-year:hover {
  background: var(--npd-primary-light);
  border-color: var(--npd-primary);
  color: var(--npd-primary);
  transform: translateY(-2px);
}

.npd-year.selected {
  background: var(--npd-primary);
  border-color: var(--npd-primary);
  color: white;
}

/* ===============================================
   Footer
   =============================================== */

.npd-footer {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--npd-border);
}

.npd-mode-toggle {
  display: flex;
  background: var(--npd-bg-secondary);
  border: 1px solid var(--npd-border);
  border-radius: var(--npd-radius);
  padding: 0.25rem;
  gap: 0.25rem;
}

.npd-mode-btn {
  flex: 1;
  padding: 0.5rem;
  background: transparent;
  border: none;
  border-radius: var(--npd-radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--npd-text-muted);
  cursor: pointer;
  transition: var(--npd-transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.npd-mode-btn:hover {
  color: var(--npd-text);
}

.npd-mode-btn.active {
  background: white;
  color: var(--npd-primary);
  box-shadow: var(--npd-shadow-sm);
}

@media (prefers-color-scheme: dark) {
  .npd-mode-btn.active {
    background: var(--npd-bg);
  }
}

.npd-actions {
  display: flex;
  gap: 0.25rem;
  flex-wrap: wrap;
}

.npd-btn {
  flex: 1;
  padding: 0.4rem 0.6rem;
  background: var(--npd-bg-secondary);
  border: 1px solid var(--npd-border);
  border-radius: var(--npd-radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--npd-text);
  cursor: pointer;
  transition: var(--npd-transition-fast);
  white-space: nowrap;
}

.npd-btn:hover {
  background: var(--npd-bg-hover);
  border-color: var(--npd-text-muted);
}

.npd-btn:active {
  transform: scale(0.98);
}

.npd-today {
  background: var(--npd-primary);
  border-color: var(--npd-primary);
  color: white;
}

.npd-today:hover {
  background: var(--npd-primary-hover);
  border-color: var(--npd-primary-hover);
  color: white;
}

.npd-clear:hover {
  background: var(--npd-danger);
  border-color: var(--npd-danger);
  color: white;
}

/* ===============================================
   Time Picker Styling
   =============================================== */

.npd-time-picker {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--npd-border);
}

.npd-time-field {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.npd-time-field label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--npd-text-muted);
}

.npd-time-inputs {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.npd-time-input {
  width: 3rem;
  padding: 0.25rem;
  border: 1px solid var(--npd-border);
  border-radius: var(--npd-radius-sm);
  background: var(--npd-bg-secondary);
  color: var(--npd-text);
  font-size: 0.9rem;
  text-align: center;
}

.npd-time-input:focus {
  border-color: var(--npd-primary);
  outline: none;
}

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

@media (max-width: 480px) {
  .npd-picker {
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    top: auto !important;
    width: 100% !important;
    border-radius: var(--npd-radius-lg) var(--npd-radius-lg) 0 0 !important;
    transform: translateY(100%) !important;
    padding-bottom: env(safe-area-inset-bottom, 1rem) !important;
    min-width: 100% !important;
  }

  .npd-picker.active {
    transform: translateY(0) !important;
  }

  .npd-body {
    min-height: 250px;
  }

  .npd-day {
    font-size: 1rem; /* Slightly larger targets for mobile */
  }
}

/* ===============================================
   Accessibility
   =============================================== */

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.npd-picker:focus-visible,
.npd-btn:focus-visible,
.npd-mode-btn:focus-visible,
.npd-nav-btn:focus-visible {
  outline: 2px solid var(--npd-primary);
  outline-offset: 2px;
}

/* ===============================================
   Custom Themes
   =============================================== */

/* Purple Theme */
.npd-picker[data-theme="purple"] {
  --npd-primary: #8b5cf6;
  --npd-primary-hover: #7c3aed;
  --npd-primary-light: #ede9fe;
}

/* Green Theme */
.npd-picker[data-theme="green"] {
  --npd-primary: #10b981;
  --npd-primary-hover: #059669;
  --npd-primary-light: #d1fae5;
}

/* Orange Theme */
.npd-picker[data-theme="orange"] {
  --npd-primary: #f59e0b;
  --npd-primary-hover: #d97706;
  --npd-primary-light: #fef3c7;
}

/* Red Theme */
.npd-picker[data-theme="red"] {
  --npd-primary: #ef4444;
  --npd-primary-hover: #dc2626;
  --npd-primary-light: #fee2e2;
}

/* ===============================================
   Print Styles
   =============================================== */

@media print {
  .npd-picker {
    display: none !important;
  }
}

/* Tooltip Styling */
.npd-tooltip {
  position: absolute;
  top: 0;
  left: 0;
  background: var(--npd-bg);
  color: var(--npd-text);
  padding: 0.5rem 0.75rem;
  border-radius: var(--npd-radius);
  box-shadow: var(--npd-shadow-lg);
  border: 1px solid var(--npd-border);
  font-size: 0.75rem;
  font-weight: 500;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.2s ease,
    transform 0.2s ease;
  pointer-events: none;
  white-space: pre;
  text-align: center;
  line-height: 1.4;
  transform: translateY(5px);
}

.npd-tooltip.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

[data-theme="dark"] .npd-tooltip {
  background: #374151;
  border-color: #4b5563;
  color: #f9fafb;
}