/* Date Picker Component Styles */
/* Figma: https://www.figma.com/design/qZqrAbd4PQ3zL6FAHWbiTj/SSRN?node-id=96-1069 */

.ssrn-date-picker {
  background-color: var(--surface-primary);       /* #f9fafa */
  border-radius: var(--radius-s);                  /* 8px */
  box-shadow: var(--shadow-l);
  padding: var(--space-600);                        /* 24px */
  width: 100%;
  min-width: min(348px, calc(100vw - var(--space-800)));
  max-width: none;
  user-select: none;
  font-family: var(--font-family-body);
  max-height: var(--ssrn-picker-available-height, calc(100vh - var(--space-800)));
  overflow-y: auto;
  overscroll-behavior: contain;
  box-sizing: border-box;
}

/* ============================================
   HEADER — month title + nav arrows
   ============================================ */
.ssrn-date-picker__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-600);                  /* 24px — gap between header and grid */
  padding: 0 var(--space-300);                      /* 12px horizontal to align with nav icons */
}

.ssrn-date-picker__title {
  font-family: var(--font-family-body);
  font-weight: var(--font-weight-medium);           /* 500 */
  font-size: var(--body-lg-size);                   /* 20px */
  line-height: var(--body-lg-line-height);          /* 32px */
  color: var(--text-primary);
  margin: 0;
  text-align: center;
  flex: 1;
}

/* ============================================
   NAV BUTTONS (double + single chevrons)
   ============================================ */
.ssrn-date-picker__nav {
  display: flex;
  gap: var(--space-200);                            /* 8px */
  align-items: center;
}

.ssrn-date-picker__nav-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-xs);
  transition: background-color 0.15s;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.ssrn-date-picker__nav-btn:hover {
  background-color: var(--grey-70);
}

.ssrn-date-picker__nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.ssrn-date-picker__nav-btn img,
.ssrn-date-picker__nav-btn svg {
  width: 20px;
  height: 20px;
  display: block;
}

/* ============================================
   CALENDAR GRID
   ============================================ */
.ssrn-date-picker__grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  row-gap: var(--space-200);                        /* 8px — matches Figma row spacing */
  justify-items: center;
  text-align: center;
}

/* ============================================
   WEEKDAY LABELS (Su Mo Tu We Th Fr Sa)
   ============================================ */
.ssrn-date-picker__weekday {
  font-weight: var(--font-weight-regular);          /* 400 */
  font-size: var(--body-md-size);                   /* 16px */
  line-height: var(--body-md-line-height);          /* 24px */
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ============================================
   DAY CELLS
   ============================================ */
.ssrn-date-picker__day {
  width: 40px;                                      /* 40px — matches Figma */
  height: 40px;
  border-radius: var(--radius-xs);                  /* 4px */
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--body-md-size);                   /* 16px */
  font-weight: var(--font-weight-medium);           /* 500 */
  line-height: var(--body-md-line-height);
  cursor: pointer;
  transition: background-color 0.15s, color 0.15s;
  background-color: transparent;
  color: var(--text-primary);
  border: none;
  padding: var(--space-100);                        /* 4px padding inside cell */
  box-sizing: border-box;
}

.ssrn-date-picker__day:hover:not(.ssrn-date-picker__day--disabled):not(.ssrn-date-picker__day--selected) {
  background-color: var(--grey-70);                 /* #f3f6f6 */
}

/* Today — outlined with primary border */
.ssrn-date-picker__day--current {
  border: var(--border-s) solid var(--border-primary); /* 1px solid #03110d */
}

/* Selected — dark filled */
.ssrn-date-picker__day--selected {
  background-color: var(--grey-10) !important;      /* #313131 */
  color: var(--white) !important;
}

/* Past / unavailable */
.ssrn-date-picker__day--disabled {
  color: var(--text-disabled);                      /* #929494 */
  cursor: not-allowed;
}

/* Empty filler cells */
.ssrn-date-picker__day--blank {
  background: none;
  cursor: default;
  visibility: hidden;
  pointer-events: none;
}

/* ============================================
   DROPDOWN WRAPPER (positioned by picker-overlay.js)
   ============================================ */
.ssrn-date-picker-dropdown {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 30000;
  display: none;
  max-width: calc(100vw - var(--space-800));
  min-width: min(348px, calc(100vw - var(--space-800)));
  max-height: var(--ssrn-picker-available-height, calc(100vh - var(--space-800)));
  overflow: visible;
  overscroll-behavior: contain;
}

.ssrn-date-picker-dropdown--open {
  display: block;
  animation: ssrnDateSlideDown 0.2s ease-out;
}

/* Flip above trigger when close to bottom */
.ssrn-date-picker-dropdown--flip-up {
  animation: ssrnDateSlideUp 0.2s ease-out;
}

/* ============================================
   BOTTOM SHEET — Mobile + Tablet (≤ 1024px)
   Shared: anchored to bottom, slide-up animation,
   rounded top corners only, no JS positioning.
   ============================================ */
@media (max-width: 1024px) {
  .ssrn-date-picker-dropdown--open {
    animation: ssrnDateBottomSheetIn 0.3s ease-out;
  }
}

/* ============================================
   BOTTOM SHEET — Mobile (< 768px)
   ============================================ */
@media (max-width: 767px) {
  .ssrn-date-picker-dropdown {
    left: 0 !important;
    right: 0 !important;
    top: auto !important;
    bottom: 0 !important;
    width: 100% !important;
    min-width: 0;
    max-width: none;
    max-height: 70vh;
  }

  .ssrn-date-picker-dropdown .ssrn-date-picker {
    width: 100%;
    min-width: 0;
    max-width: none;
    max-height: 70vh;
    padding: var(--space-600) var(--space-400);
    border-radius: var(--radius-l) var(--radius-l) 0 0;
    box-shadow: 0 -2px 20px rgba(3, 17, 13, 0.12);
  }
}

/* ============================================
   BOTTOM SHEET — Tablet (768px – 1024px)
   SSRN-109: Date picker sizing in tablet must match design
   ============================================ */
@media (min-width: 768px) and (max-width: 1024px) {
  .ssrn-date-picker-dropdown {
    left: 0 !important;
    right: 0 !important;
    top: auto !important;
    bottom: 0 !important;
    width: 100% !important;
    max-width: none !important;
    min-width: 0 !important;
    max-height: 70vh !important;
  }

  .ssrn-date-picker-dropdown .ssrn-date-picker,
  .ssrn-date-picker-dropdown--open > .ssrn-date-picker {
    width: 100%;
    min-width: 0;
    max-width: none;
    max-height: 70vh;
    padding: var(--space-600) var(--space-800);
    border-radius: var(--radius-l) var(--radius-l) 0 0;
    box-shadow: 0 -2px 20px rgba(3, 17, 13, 0.12);
  }

  /* Scale day cells to fill wider bottom sheet gracefully */
  .ssrn-date-picker-dropdown .ssrn-date-picker__day,
  .ssrn-date-picker-dropdown .ssrn-date-picker__weekday {
    width: 100%;
    max-width: 56px;
    height: 48px;
  }
}

/* ============================================
   SMALL PHONE (< 420px)
   ============================================ */
@media (max-width: 420px) {
  .ssrn-date-picker {
    padding: var(--space-300);
  }

  .ssrn-date-picker__day,
  .ssrn-date-picker__weekday {
    width: 36px;
    height: 36px;
  }
}

/* ============================================
   CHEVRON ROTATION (shared with time picker)
   ============================================ */
.booking-form-landing__date-chevron svg,
.booking-form-landing__date-chevron img,
.booking-form-landing__time-chevron svg,
.booking-form-landing__time-chevron img {
  transition: transform 0.2s ease;
}

.booking-form-landing__date-chevron--open svg,
.booking-form-landing__date-chevron--open img,
.booking-form-landing__time-chevron--open svg,
.booking-form-landing__time-chevron--open img {
  transform: rotate(180deg);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes ssrnDateSlideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes ssrnDateSlideUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Bottom sheet: slides up from off-screen */
@keyframes ssrnDateBottomSheetIn {
  from { transform: translateY(100%); }
  to   { transform: translateY(0); }
}