/**
 * RK Calendar - Modern Date Picker Styles
 * 
 * Clean, minimal design with range selection support.
 * Desktop: Two months side-by-side
 * Mobile: Vertically stacked, scrollable
 */

/* ============================================================
   CSS VARIABLES - Inherit from theme, with fallbacks
   ============================================================ */

.rk-calendar-overlay {
  /* Use theme variables if available, otherwise fallback to defaults */
  --rk-cal-bg: var(--color-card, #ffffff);
  --rk-cal-text: var(--color-text-primary, #1a1a2e);
  --rk-cal-text-muted: var(--color-text-secondary, #9ca3af);
  --rk-cal-border: var(--color-border-light, #e5e7eb);
  --rk-cal-primary: var(--color-primary, #3730a3);
  --rk-cal-primary-light: var(--color-primary-light, #e0e7ff);
  --rk-cal-radius: var(--radius-lg, 12px);
  --rk-cal-shadow: var(--shadow-lg, 0 25px 50px -12px rgba(0, 0, 0, 0.25));
}

/* ============================================================
   OVERLAY - Fixed position backdrop
   ============================================================ */

.rk-calendar-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 60px;
  background-color: rgba(0, 0, 0, 0.5);
  animation: rk-cal-fadeIn 150ms ease;
  overflow-y: auto;
}

@keyframes rk-cal-fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ============================================================
   MODAL CONTAINER
   ============================================================ */

.rk-calendar-modal {
  position: relative;
  background: var(--rk-cal-bg);
  border-radius: var(--rk-cal-radius);
  box-shadow: var(--rk-cal-shadow);
  overflow: hidden;
  animation: rk-cal-scaleIn 200ms ease;
  max-width: 95vw;
  max-height: 95vh;
  padding: 20px 24px 24px;
}

@keyframes rk-cal-scaleIn {
  from { 
    opacity: 0;
    transform: scale(0.95);
  }
  to { 
    opacity: 1;
    transform: scale(1);
  }
}

/* ============================================================
   HEADER - Nav arrows and month titles
   ============================================================ */

.rk-calendar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.rk-calendar-month-titles {
  display: flex;
  flex: 1;
  justify-content: space-around;
}

.rk-calendar-month-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--rk-cal-text);
  text-align: center;
  flex: 1;
}

/* ============================================================
   NAVIGATION ARROWS
   ============================================================ */

.rk-calendar-nav-prev,
.rk-calendar-nav-next {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  border-radius: 50%;
  color: var(--rk-cal-text);
  cursor: pointer;
  transition: background-color 150ms ease;
  flex-shrink: 0;
}

.rk-calendar-nav-prev:hover,
.rk-calendar-nav-next:hover {
  background-color: var(--rk-cal-border);
}

.rk-calendar-nav-prev svg,
.rk-calendar-nav-next svg {
  stroke: currentColor;
}

/* ============================================================
   MONTHS CONTAINER
   ============================================================ */

.rk-calendar-months {
  display: flex;
  gap: 32px;
}

.rk-calendar-month {
  flex: 1;
  min-width: 260px;
}

/* ============================================================
   WEEKDAY NAMES
   ============================================================ */

.rk-calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  margin: 0;
  padding: 0;
  gap: 0;
}

.rk-calendar-weekday {
  text-align: center;
  padding: 8px 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--rk-cal-text-muted);
}

/* ============================================================
   DAYS GRID
   ============================================================ */

.rk-calendar-days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  row-gap: 2px;
  column-gap: 0;
  margin: 0;
  padding: 0;
}

.rk-calendar-day {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  font-size: 14px;
  font-weight: 500;
  color: var(--rk-cal-text);
  cursor: pointer;
  transition: background-color 100ms ease;
  background: transparent;
  border-radius: 0 !important;
  border: none !important;
  outline: none !important;
}

.rk-calendar-day-empty {
  cursor: default;
}

.rk-calendar-day-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  border-radius: 0 !important;
  border: none !important;
  outline: none !important;
}

/* Hover state */
.rk-calendar-day:not(.rk-is-disabled):not(.rk-calendar-day-empty):not(.rk-is-range-start):not(.rk-is-range-end):not(.rk-is-in-range):hover {
  background-color: var(--rk-cal-border);
}

/* ============================================================
   DAY STATES
   ============================================================ */

/* Today */
.rk-calendar-day.rk-is-today .rk-calendar-day-inner {
  font-weight: 700;
  color: var(--rk-cal-primary);
}

/* Disabled */
.rk-calendar-day.rk-is-disabled {
  color: var(--rk-cal-text-muted);
  cursor: not-allowed;
  opacity: 0.4;
}

.rk-calendar-day.rk-is-disabled:hover .rk-calendar-day-inner {
  background-color: transparent;
}

/* ============================================================
   RANGE SELECTION STYLES
   ============================================================ */

/* In-range background - full cell, light gray */
.rk-calendar-day.rk-is-in-range {
  background-color: var(--rk-cal-primary-light) !important;
  border-radius: 0 !important;
  border: none !important;
  outline: none !important;
}

/* Range start - dark background, NO border */
.rk-calendar-day.rk-is-range-start {
  background-color: var(--rk-cal-primary) !important;
  color: white !important;
  border-radius: 0 !important;
  border: none !important;
  outline: none !important;
}

/* Range end - dark background, NO border */
.rk-calendar-day.rk-is-range-end {
  background-color: var(--rk-cal-primary) !important;
  color: white !important;
  border-radius: 0 !important;
  border: none !important;
  outline: none !important;
}

/* When start and end are same day */
.rk-calendar-day.rk-is-range-start.rk-is-range-end {
  background-color: var(--rk-cal-primary) !important;
  color: white !important;
}

/* Single mode selected */
.rk-calendar-day.rk-is-selected:not(.rk-is-range-start):not(.rk-is-range-end) {
  background-color: var(--rk-cal-primary) !important;
  color: white !important;
  border-radius: 0 !important;
  border: none !important;
  outline: none !important;
}

/* ============================================================
   HOVER PREVIEW STYLES
   ============================================================ */

/* Preview range - light gray, NO border */
.rk-calendar-day.rk-is-preview {
  background-color: var(--rk-cal-primary-light) !important;
  border-radius: 0 !important;
  border: none !important;
  outline: none !important;
}

/* Preview end date - dark background like selected */
.rk-calendar-day.rk-is-preview-end {
  background-color: var(--rk-cal-primary) !important;
  color: white !important;
  border-radius: 0 !important;
  border: none !important;
  outline: none !important;
}

/* ============================================================
   LOAD MORE BUTTON (mobile only)
   ============================================================ */

.rk-calendar-load-more-wrap {
  display: none;
}

.rk-calendar-load-more {
  display: none;
}

/* ============================================================
   MOBILE CLOSE BUTTON (hidden on desktop)
   ============================================================ */

.rk-calendar-close-btn {
  display: none;
}

/* ============================================================
   MOBILE STYLES
   ============================================================ */

@media (max-width: 700px) {
  .rk-calendar-overlay {
    padding: 16px;
    align-items: flex-start;
    justify-content: center;
    /* Prevent scroll chaining to parent/iframe */
    overscroll-behavior: contain;
    -ms-scroll-chaining: none;
  }
  
  .rk-calendar-modal {
    position: relative;
    width: 100%;
    max-width: 400px;
    height: 420px;
    max-height: 420px;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    padding: 0;
    /* Prevent scroll chaining to parent/iframe */
    overscroll-behavior: contain;
    -ms-scroll-chaining: none;
  }

  /* Mobile header - just title and close button */
  .rk-calendar-header {
    flex-shrink: 0;
    margin-bottom: 0;
    padding: 16px;
    border-bottom: 1px solid var(--rk-cal-border);
    background: var(--rk-cal-bg);
    position: sticky;
    top: 0;
    z-index: 10;
  }

  /* Hide nav arrows on mobile */
  .rk-calendar-nav-prev,
  .rk-calendar-nav-next {
    display: none !important;
  }

  /* Hide header month titles on mobile - each month has its own */
  .rk-calendar-month-titles {
    display: none !important;
  }

  /* Show close button on mobile */
  .rk-calendar-close-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--rk-cal-text);
    border-radius: 50%;
    transition: background-color 0.15s ease;
  }

  .rk-calendar-close-btn:hover {
    background-color: rgba(0, 0, 0, 0.1);
  }

  /* Mobile title in header */
  .rk-calendar-mobile-title {
    display: block;
    text-align: center;
    font-size: 18px;
    font-weight: 600;
    color: var(--rk-cal-text);
  }

  /* Months container - scrollable */
  .rk-calendar-months {
    display: block !important;
    flex: 1 1 auto !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    padding: 0 16px 16px !important;
    -webkit-overflow-scrolling: touch;
    /* Prevent scroll chaining to parent/iframe */
    overscroll-behavior: contain;
    -ms-scroll-chaining: none;
    touch-action: pan-y;
  }

  .rk-calendar-month {
    display: block !important;
    position: relative !important;
    min-width: auto !important;
    width: 100% !important;
    padding-top: 12px !important;
    margin-bottom: 0 !important;
  }
  
  .rk-calendar-month.dpTable {
    display: block !important;
    position: relative !important;
    width: 100% !important;
  }

  /* Month header for each month on mobile */
  .rk-calendar-month-header {
    display: block !important;
    text-align: center;
    font-size: 16px;
    font-weight: 700;
    color: var(--rk-cal-text);
    margin-bottom: 8px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--rk-cal-border);
  }
  
  /* Load more dates button wrapper and button on mobile */
  .rk-calendar-load-more-wrap {
    display: block !important;
    width: 100% !important;
    padding: 16px 0;
    margin-top: 12px;
    background: var(--rk-cal-bg);
    flex-shrink: 0 !important;
  }
  
  .rk-calendar-load-more {
    display: block !important;
    width: 100%;
    padding: 16px 24px;
    font-size: 16px;
    font-weight: 500;
    color: var(--rk-cal-text);
    background: var(--rk-cal-bg);
    border: 2px solid var(--rk-cal-border);
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.15s ease, border-color 0.15s ease;
  }
  
  .rk-calendar-load-more:hover {
    background-color: var(--rk-cal-border);
  }
  
  .rk-calendar-load-more:active {
    background-color: var(--rk-cal-primary-light);
  }
}

/* Desktop: hide mobile-only elements */
@media (min-width: 701px) {
  .rk-calendar-mobile-title {
    display: none !important;
  }
  
  .rk-calendar-month-header {
    display: none !important;
  }
}

/* ============================================================
   LEGACY CLASS OVERRIDES - Override theme styles
   ============================================================ */

/* Override dpDiv styles from theme */
.rk-calendar-modal.dpDiv {
  width: auto !important;
  box-shadow: var(--rk-cal-shadow) !important;
  border: none !important;
  padding: 20px 24px 24px !important;
}

/* Override dpTable styles from theme - THIS IS CRITICAL */
.rk-calendar-month.dpTable {
  width: 100% !important;
  min-width: 260px !important;
  max-width: none !important;
  background-color: transparent !important;
  border: none !important;
  padding: 0 !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  font-size: 14px !important;
}

/* Override dpTD styles from theme */
.rk-calendar-day.dpTD {
  width: auto !important;
  height: 44px !important;
  padding: 0 !important;
  margin: 0 !important;
  border: none !important;
  border-radius: 0 !important;
}

/* In-range needs higher specificity than dpTD */
.rk-calendar-day.dpTD.rk-is-in-range {
  background-color: var(--rk-cal-primary-light) !important;
}

.rk-calendar-day.dpTD.rk-is-preview {
  background-color: var(--rk-cal-primary-light) !important;
}

.rk-calendar-day.dpTD.rk-is-preview-end {
  background-color: var(--rk-cal-primary) !important;
  color: white !important;
}

.rk-calendar-day.dpTD.rk-is-range-start,
.rk-calendar-day.dpTD.rk-is-range-end {
  background-color: var(--rk-cal-primary) !important;
  color: white !important;
}

/* Override dpDayHighlightTD */
.rk-calendar-day.dpDayHighlightTD {
  background-color: var(--rk-cal-primary) !important;
  color: white !important;
  border: none !important;
  border-radius: 0 !important;
}

/* Override any dpDayTD styles */
.rk-calendar-weekday.dpDayTD {
  width: auto !important;
  padding: 8px 0 !important;
  border: none !important;
  background: transparent !important;
}

/* ============================================================
   MOBILE LEGACY OVERRIDES
   ============================================================ */

@media (max-width: 700px) {
  .rk-calendar-modal.dpDiv {
    padding: 0 !important;
    width: 100% !important;
    max-width: 400px !important;
    height: 420px !important;
    max-height: 420px !important;
  }
  
  /* CRITICAL: Override theme's position: fixed on .dpTable for mobile */
  .rk-calendar-month.dpTable,
  .rk-calendar-months .dpTable {
    display: block !important;
    position: relative !important;
    position: static !important;
    min-width: auto !important;
    width: 100% !important;
    max-width: 100% !important;
    float: none !important;
    clear: both !important;
    left: auto !important;
    right: auto !important;
    top: auto !important;
    bottom: auto !important;
    transform: none !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
  }
  
  .rk-calendar-days {
    display: grid !important;
  }
  
  .rk-calendar-weekdays {
    display: grid !important;
  }
}

/* ============================================================
   PRINT STYLES
   ============================================================ */

@media print {
  .rk-calendar-overlay {
    display: none !important;
  }
}