/* vanilla-js-datepicker — default stylesheet */

/* ─── Custom properties (light theme) ─────────────────────────────────────── */
:root {
  --vdp-z: 1000;
  --vdp-font: system-ui, -apple-system, sans-serif;
  --vdp-radius: 10px;
  --vdp-shadow: 0 8px 32px rgba(0, 0, 0, .15);
  --vdp-border: #dde1ef;
  --vdp-bg: #ffffff;
  --vdp-text: #1a202c;
  --vdp-muted: #718096;
  --vdp-accent: #3b82f6;
  --vdp-accent-text: #ffffff;
  --vdp-accent-hover: #2563eb;
  --vdp-hover-bg: #f0f4ff;
  --vdp-today-border: #3b82f6;
  --vdp-range-bg: #dbeafe;
  --vdp-range-text: #1e40af;
  --vdp-out-text: #c1c7d0;
  --vdp-disabled-text: #c1c7d0;
  --vdp-disabled-bg: transparent;
  --vdp-weekend-text: #e53e3e;
  --vdp-highlight-bg: #fefce8;
  --vdp-highlight-border: #fbbf24;
  --vdp-header-bg: transparent;
  --vdp-header-text: #1a202c;
  --vdp-btn-bg: transparent;
  --vdp-btn-border: #dde1ef;
  --vdp-btn-text: #374151;
  --vdp-btn-hover: #f3f4f6;
  --vdp-footer-border: #f0f0f5;
  --vdp-anim-dur: 150ms;
}

/* ─── Dark theme ───────────────────────────────────────────────────────────── */
[data-vdp-theme="dark"],
.vdp-dropdown[data-vdp-theme="dark"] {
  --vdp-bg: #1e2433;
  --vdp-text: #e2e8f0;
  --vdp-muted: #94a3b8;
  --vdp-border: #2d3748;
  --vdp-hover-bg: #2d3748;
  --vdp-out-text: #4a5568;
  --vdp-disabled-text: #4a5568;
  --vdp-weekend-text: #fc8181;
  --vdp-range-bg: #1e3a5f;
  --vdp-range-text: #93c5fd;
  --vdp-header-text: #e2e8f0;
  --vdp-btn-border: #2d3748;
  --vdp-btn-text: #e2e8f0;
  --vdp-btn-hover: #2d3748;
  --vdp-footer-border: #2d3748;
  --vdp-highlight-bg: #3b2f00;
  --vdp-highlight-border: #f59e0b;
}

/* Auto theme — respects OS preference */
@media (prefers-color-scheme: dark) {
  [data-vdp-theme="auto"] {
    --vdp-bg: #1e2433;
    --vdp-text: #e2e8f0;
    --vdp-muted: #94a3b8;
    --vdp-border: #2d3748;
    --vdp-hover-bg: #2d3748;
    --vdp-out-text: #4a5568;
    --vdp-disabled-text: #4a5568;
    --vdp-weekend-text: #fc8181;
    --vdp-range-bg: #1e3a5f;
    --vdp-range-text: #93c5fd;
    --vdp-header-text: #e2e8f0;
    --vdp-btn-border: #2d3748;
    --vdp-btn-text: #e2e8f0;
    --vdp-btn-hover: #2d3748;
    --vdp-footer-border: #2d3748;
    --vdp-highlight-bg: #3b2f00;
    --vdp-highlight-border: #f59e0b;
  }
}

/* ─── Dropdown container ───────────────────────────────────────────────────── */
.vdp-dropdown {
  position: fixed;
  z-index: var(--vdp-z, 1000);
  background: var(--vdp-bg);
  color: var(--vdp-text);
  border: 1px solid var(--vdp-border);
  border-radius: var(--vdp-radius);
  box-shadow: var(--vdp-shadow);
  font-family: var(--vdp-font);
  font-size: 14px;
  min-width: 280px;
  user-select: none;
  outline: none;
}

/* ─── Animations ───────────────────────────────────────────────────────────── */
[data-animation="fade"].vdp-dropdown {
  animation: vdp-fade-in var(--vdp-anim-dur) ease;
}

[data-animation="slide"].vdp-dropdown {
  animation: vdp-slide-in var(--vdp-anim-dur) ease;
}

[data-animation="none"].vdp-dropdown {
  animation: none;
}

@keyframes vdp-fade-in {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes vdp-slide-in {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .vdp-dropdown {
    animation: none !important;
  }
}

/* ─── Header ───────────────────────────────────────────────────────────────── */
.vdp-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px 6px;
  background: var(--vdp-header-bg);
  border-bottom: 1px solid var(--vdp-border);
}

.vdp-header-labels {
  display: flex;
  gap: 4px;
}

.vdp-btn-prev,
.vdp-btn-next {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 6px;
  background: var(--vdp-btn-bg);
  color: var(--vdp-btn-text);
  cursor: pointer;
  transition: background var(--vdp-anim-dur);
}

.vdp-btn-prev:hover,
.vdp-btn-next:hover {
  background: var(--vdp-btn-hover);
}

.vdp-btn-prev:focus-visible,
.vdp-btn-next:focus-visible {
  outline: 2px solid var(--vdp-accent);
  outline-offset: 2px;
}

.vdp-btn-month,
.vdp-btn-year {
  border: none;
  background: none;
  color: var(--vdp-header-text);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  transition: background var(--vdp-anim-dur);
}

.vdp-btn-month:hover,
.vdp-btn-year:hover {
  background: var(--vdp-hover-bg);
}

.vdp-decade-label {
  font-size: 13px;
  color: var(--vdp-muted);
  padding: 4px 8px;
}

/* ─── Body ─────────────────────────────────────────────────────────────────── */
.vdp-body {
  padding: 8px 12px 12px;
}

/* ─── Weekday header row ───────────────────────────────────────────────────── */
.vdp-weekday-row {
  display: flex;
  margin-bottom: 4px;
}

.vdp-weekday-cell {
  flex: 1;
  text-align: center;
  font-size: 11px;
  font-weight: 600;
  color: var(--vdp-muted);
  padding: 4px 0;
  text-transform: uppercase;
  letter-spacing: .5px;
}

/* ─── Day grid ─────────────────────────────────────────────────────────────── */
.vdp-day-grid {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.vdp-grid-row {
  display: flex;
  gap: 2px;
}

/* ─── Cells ────────────────────────────────────────────────────────────────── */
.vdp-cell {
  flex: 1;
  aspect-ratio: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 6px;
  background: none;
  color: var(--vdp-text);
  font-size: 13px;
  cursor: pointer;
  position: relative;
  transition: background var(--vdp-anim-dur), color var(--vdp-anim-dur);
}

.vdp-cell:hover:not(.vdp-cell--disabled):not(.vdp-cell--out) {
  background: var(--vdp-hover-bg);
}

.vdp-cell:focus-visible {
  outline: 2px solid var(--vdp-accent);
  outline-offset: 1px;
  z-index: 1;
}

.vdp-cell--out {
  color: var(--vdp-out-text);
  cursor: default;
}

.vdp-cell--today {
  font-weight: 700;
}

.vdp-cell--today::after {
  content: '';
  position: absolute;
  bottom: 3px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--vdp-accent);
}

.vdp-cell--selected {
  background: var(--vdp-accent);
  color: var(--vdp-accent-text);
  font-weight: 600;
}

.vdp-cell--selected:hover {
  background: var(--vdp-accent-hover);
}

.vdp-cell--selected.vdp-cell--today::after {
  background: var(--vdp-accent-text);
}

.vdp-cell--in-range {
  background: var(--vdp-range-bg);
  color: var(--vdp-range-text);
  border-radius: 0;
}

.vdp-cell--range-start {
  background: var(--vdp-accent);
  color: var(--vdp-accent-text);
  border-radius: 6px 0 0 6px;
}

.vdp-cell--range-end {
  background: var(--vdp-accent);
  color: var(--vdp-accent-text);
  border-radius: 0 6px 6px 0;
}

.vdp-cell--range-start.vdp-cell--range-end {
  border-radius: 6px;
}

.vdp-cell--weekend {
  color: var(--vdp-weekend-text);
}

.vdp-cell--disabled,
.vdp-cell--disabled:hover {
  color: var(--vdp-disabled-text);
  background: var(--vdp-disabled-bg);
  cursor: not-allowed;
  opacity: .5;
}

.vdp-cell--highlighted {
  background: var(--vdp-highlight-bg);
  box-shadow: inset 0 0 0 1px var(--vdp-highlight-border);
}

/* ─── Badge ────────────────────────────────────────────────────────────────── */
.vdp-badge {
  position: absolute;
  top: 2px;
  right: 3px;
  font-size: 9px;
  line-height: 1;
  color: var(--vdp-accent);
  font-weight: 700;
}

/* ─── Week number column ───────────────────────────────────────────────────── */
.vdp-wn-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  flex-shrink: 0;
  font-size: 10px;
  color: var(--vdp-muted);
  font-weight: 500;
}

/* ─── Month grid ───────────────────────────────────────────────────────────── */
.vdp-month-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  padding: 4px 0;
}

.vdp-month-cell {
  border: none;
  border-radius: 6px;
  background: none;
  color: var(--vdp-text);
  font-size: 13px;
  padding: 10px 4px;
  cursor: pointer;
  transition: background var(--vdp-anim-dur);
  text-align: center;
}

.vdp-month-cell:hover {
  background: var(--vdp-hover-bg);
}

.vdp-month-cell:focus-visible {
  outline: 2px solid var(--vdp-accent);
  outline-offset: 1px;
}

.vdp-month-cell.vdp-cell--selected {
  background: var(--vdp-accent);
  color: var(--vdp-accent-text);
}

/* ─── Year grid ────────────────────────────────────────────────────────────── */
.vdp-year-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  padding: 4px 0;
}

.vdp-year-cell {
  border: none;
  border-radius: 6px;
  background: none;
  color: var(--vdp-text);
  font-size: 13px;
  padding: 10px 4px;
  cursor: pointer;
  transition: background var(--vdp-anim-dur);
  text-align: center;
}

.vdp-year-cell:hover {
  background: var(--vdp-hover-bg);
}

.vdp-year-cell:focus-visible {
  outline: 2px solid var(--vdp-accent);
  outline-offset: 1px;
}

.vdp-year-cell.vdp-cell--selected {
  background: var(--vdp-accent);
  color: var(--vdp-accent-text);
}

/* ─── Footer ───────────────────────────────────────────────────────────────── */
.vdp-footer {
  display: flex;
  gap: 6px;
  padding: 8px 12px 12px;
  border-top: 1px solid var(--vdp-footer-border);
}

.vdp-btn {
  flex: 1;
  border: 1px solid var(--vdp-btn-border);
  border-radius: 6px;
  background: var(--vdp-btn-bg);
  color: var(--vdp-btn-text);
  font-size: 13px;
  padding: 7px 10px;
  cursor: pointer;
  transition: background var(--vdp-anim-dur);
  text-align: center;
}

.vdp-btn:hover {
  background: var(--vdp-btn-hover);
}

.vdp-btn:focus-visible {
  outline: 2px solid var(--vdp-accent);
  outline-offset: 1px;
}

.vdp-btn-confirm {
  background: var(--vdp-accent);
  color: var(--vdp-accent-text);
  border-color: var(--vdp-accent);
  font-weight: 600;
}

.vdp-btn-confirm:hover {
  background: var(--vdp-accent-hover);
  border-color: var(--vdp-accent-hover);
}

/* ─── Input states ─────────────────────────────────────────────────────────── */
.vdp-input--active {
  /* Override in consuming app or use classNames option */
}

.vdp-invalid {
  /* Override in consuming app or use classNames option */
}

/* ─── Placement variants ───────────────────────────────────────────────────── */
.vdp-dropdown[data-placement="top"] {
  animation-name: vdp-slide-up;
}

@keyframes vdp-slide-up {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── Accessibility — screen-reader live region ────────────────────────────── */
.vdp-live {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ─── Focus-focused cell highlight ────────────────────────────────────────── */
.vdp-cell--focused {
  outline: 2px solid var(--vdp-accent);
  outline-offset: 1px;
}