/* ================================================================
   Calenca — Stylesheet
   Theme via CSS custom properties on .calenca
   ================================================================ */

/* ── Custom properties (theme tokens) ───────────────────────── */
.calenca {
  /* Sizing */
  --cal-cell-size: 2.25rem;
  --cal-cell-radius: 50%;
  --cal-panel-gap: 1.5rem;
  --cal-font-size: 0.875rem;
  --cal-header-font-size: 0.9375rem;
  --cal-font-family: inherit;

  /* Colors: base */
  --cal-bg: #ffffff;
  --cal-border: #e5e7eb;
  --cal-text: #111827;
  --cal-text-muted: #9ca3af;
  --cal-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
  --cal-radius: 0.75rem;

  /* Colors: day states */
  --cal-today-border: #3b82f6;
  --cal-today-text: #3b82f6;
  --cal-hover-bg: #f3f4f6;

  /* Colors: selection */
  --cal-selected-bg: #3b82f6;
  --cal-selected-text: #ffffff;

  /* Colors: range */
  --cal-range-bg: #dbeafe;
  --cal-range-text: #1e40af;
  --cal-range-start-bg: var(--cal-selected-bg);
  --cal-range-end-bg: var(--cal-selected-bg);
  --cal-range-preview-bg: #eff6ff;

  /* Colors: disabled */
  --cal-disabled-text: #d1d5db;
  --cal-disabled-bg: transparent;

  /* Colors: other month */
  --cal-other-month-text: #d1d5db;

  /* Navigation */
  --cal-nav-btn-size: 1.75rem;
  --cal-nav-btn-radius: 0.375rem;
  --cal-nav-btn-hover-bg: #f3f4f6;
  --cal-nav-btn-color: #374151;

  /* Focus ring */
  --cal-focus-color: #3b82f6;
  --cal-focus-ring: 0 0 0 2px #ffffff, 0 0 0 4px #3b82f6;

  /* Weekday header */
  --cal-weekday-text: #6b7280;
  --cal-weekday-font-size: 0.75rem;

  /* Nights counter */
  --cal-nights-bg: #f9fafb;
  --cal-nights-text: #374151;
  --cal-nights-font-size: 0.8125rem;
  --cal-nights-padding: 0.5rem 1rem;
  --cal-nights-radius: 0 0 0.75rem 0.75rem;

  /* Z-index (popup) */
  --cal-z-index: 9999;

  /* Animation */
  --cal-transition: 120ms ease;
}

/* ── Root ────────────────────────────────────────────────────── */
.calenca {
  font-family: var(--cal-font-family);
  font-size: var(--cal-font-size);
  color: var(--cal-text);
  display: inline-block;
  box-sizing: border-box;
}

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

/* ── Dialog wrapper ──────────────────────────────────────────── */
.calenca__dialog {
  background: var(--cal-bg);
  border: 1px solid var(--cal-border);
  border-radius: var(--cal-radius);
  box-shadow: var(--cal-shadow);
  overflow: hidden;
  position: relative;
  user-select: none;
  -webkit-user-select: none;
}

/* ── Close button ────────────────────────────────────────────── */
.calenca__close-btn {
  position: absolute;
  top: 0.5rem;
  inset-inline-end: 0.5rem;
  /* right in LTR, left in RTL */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--cal-nav-btn-size);
  height: var(--cal-nav-btn-size);
  padding: 0;
  border: none;
  background: transparent;
  color: var(--cal-nav-btn-color);
  border-radius: var(--cal-nav-btn-radius);
  cursor: pointer;
  z-index: 2;
  transition: background var(--cal-transition), color var(--cal-transition);
}

.calenca__close-btn:hover {
  background: var(--cal-nav-btn-hover-bg);
}

.calenca__close-btn:focus-visible {
  outline: none;
  box-shadow: var(--cal-focus-ring);
}

.calenca__close-btn svg {
  width: 0.875em;
  height: 0.875em;
  fill: currentColor;
  display: block;
  flex-shrink: 0;
}

.calenca__close-btn[hidden] {
  display: none !important;
}

/* Inline mode — no shadow/border */
.calenca--inline .calenca__dialog {
  box-shadow: none;
  border: 1px solid var(--cal-border);
}

/* ── Panels container ────────────────────────────────────────── */
.calenca__panels {
  display: flex;
  flex-wrap: wrap;
  gap: var(--cal-panel-gap);
  padding: 1rem;
}

.calenca__panel {
  flex: 1 1 auto;
  min-width: 0;
}

/* ── Header ──────────────────────────────────────────────────── */
.calenca__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.25rem;
  margin-bottom: 0.625rem;
}

.calenca__title {
  font-size: var(--cal-header-font-size);
  font-weight: 600;
  margin: 0;
  flex: 1;
  text-align: center;
  color: var(--cal-text);
  white-space: nowrap;
}

/* ── Nav buttons ─────────────────────────────────────────────── */
.calenca__nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--cal-nav-btn-size);
  height: var(--cal-nav-btn-size);
  border: none;
  background: transparent;
  color: var(--cal-nav-btn-color);
  border-radius: var(--cal-nav-btn-radius);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  transition: background var(--cal-transition), color var(--cal-transition);
  flex-shrink: 0;
}

.calenca__nav-btn:hover:not([aria-disabled="true"]) {
  background: var(--cal-nav-btn-hover-bg);
}

.calenca__nav-btn:focus-visible {
  outline: none;
  box-shadow: var(--cal-focus-ring);
}

.calenca__nav-btn[aria-disabled="true"] {
  opacity: 0.3;
  cursor: default;
  pointer-events: none;
}


/* RTL: flip custom icon HTML/SVG to match reversed layout */
.calenca--rtl .calenca__nav-icon {
  display: inline-block;
  transform: scaleX(-1);
}

/* ── Grid / table ────────────────────────────────────────────── */
.calenca__grid {
  border-collapse: collapse;
  border-spacing: 0;
  width: 100%;
  table-layout: fixed;
}

/* ── Weekday header cells ─────────────────────────────────────── */
.calenca__weekday {
  font-size: var(--cal-weekday-font-size);
  font-weight: 500;
  color: var(--cal-weekday-text);
  text-align: center;
  padding: 0 0 0.375rem;
  width: var(--cal-cell-size);
}

/* ── Day cells ───────────────────────────────────────────────── */
.calenca__day {
  position: relative;
  text-align: center;
  padding: 0.125rem 0;
  cursor: pointer;
  vertical-align: top;
}

.calenca__day-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--cal-cell-size);
  height: var(--cal-cell-size);
  border-radius: var(--cal-cell-radius);
  line-height: 1;
  font-size: var(--cal-font-size);
  transition: background var(--cal-transition), color var(--cal-transition),
    box-shadow var(--cal-transition);
  position: relative;
  z-index: 1;
}

/* Hover */
.calenca__day:not(.calenca__day--disabled):not(.calenca__day--other-month):hover .calenca__day-num {
  background: var(--cal-hover-bg);
}

/* Today */
.calenca__day--today .calenca__day-num {
  border: 2px solid var(--cal-today-border);
  color: var(--cal-today-text);
  font-weight: 600;
}

/* Selected / range edges */
.calenca__day--selected .calenca__day-num,
.calenca__day--range-start .calenca__day-num,
.calenca__day--range-end .calenca__day-num {
  background: var(--cal-selected-bg);
  color: var(--cal-selected-text);
  font-weight: 600;
}

/* In-range cells */
.calenca__day--in-range {
  background: var(--cal-range-bg);
}

.calenca__day--in-range .calenca__day-num {
  color: var(--cal-range-text);
  border-radius: 0;
  width: var(--cal-cell-size);
}

/* Range start — right half bg */
.calenca__day--range-start:not(.calenca__day--range-end) {
  background: linear-gradient(to right, transparent 50%, var(--cal-range-bg) 50%);
}

/* Range end — left half bg */
.calenca__day--range-end:not(.calenca__day--range-start) {
  background: linear-gradient(to left, transparent 50%, var(--cal-range-bg) 50%);
}

/* RTL flip range gradients */
.calenca--rtl .calenca__day--range-start:not(.calenca__day--range-end) {
  background: linear-gradient(to left, transparent 50%, var(--cal-range-bg) 50%);
}

.calenca--rtl .calenca__day--range-end:not(.calenca__day--range-start) {
  background: linear-gradient(to right, transparent 50%, var(--cal-range-bg) 50%);
}

/* Range preview (hover) */
.calenca__day--range-preview {
  background: var(--cal-range-preview-bg);
}

.calenca__day--range-preview .calenca__day-num {
  border-radius: 0;
  width: 100%;
}

/* Disabled */
.calenca__day--disabled {
  cursor: default;
  pointer-events: none;
}

.calenca__day--disabled .calenca__day-num {
  color: var(--cal-disabled-text);
  background: var(--cal-disabled-bg);
  text-decoration: line-through;
}

/* Other month */
.calenca__day--other-month .calenca__day-num {
  color: var(--cal-other-month-text);
}

.calenca__day--other-month {
  cursor: default;
}

/* Focus ring on day cell.
   outline on .calenca__day-num (the circle) rather than the <td>:
   - respects border-radius so it renders as a circle
   - never clipped by overflow:hidden on ancestor elements
   - only shown for keyboard navigation (:focus-visible) */
.calenca__day:focus-visible,
.calenca__day[tabindex="0"]:focus-visible {
  outline: none;
}

.calenca__day:focus-visible .calenca__day-num,
.calenca__day[tabindex="0"]:focus-visible .calenca__day-num {
  outline: 2px solid var(--cal-focus-color, #3b82f6);
  outline-offset: 2px;
  box-shadow: 0 0 0 2px #ffffff;
  /* white gap between circle edge and outline */
}

/* ── Custom day extra content ─────────────────────────────────── */
.calenca__day-extra {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  font-size: 0.6rem;
  line-height: 1.2;
  text-align: center;
  color: var(--cal-text-muted);
  margin-top: 1px;
  white-space: nowrap;
  overflow: hidden;
  max-width: var(--cal-cell-size);
  margin-inline: auto;
}

/* ── Day inline content (from dayData template: 'inline') ──────── */
.calenca__day-inline {
  display: block;
  font-size: 0.6rem;
  line-height: 1.2;
  text-align: center;
  color: var(--cal-text-muted);
  margin-top: 1px;
  overflow: hidden;
  max-width: var(--cal-cell-size);
  margin-inline: auto;
}

/* ── Day markers (from dayData template array) ────────────────── */
.calenca__day-marker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  line-height: 1;
  flex-shrink: 0;
}

.calenca__day-marker svg {
  width: 1.5em;
  height: 1.5em;
  display: block;
  flex-shrink: 0;
}

/* ── Day data footer list ─────────────────────────────────────── */
.calenca__daylist {
  border-top: 1px solid var(--cal-border);
  padding: 0.625rem 1rem 0.75rem;
  max-height: 14rem;
  overflow-y: auto;
}

.calenca__daylist-header {
  margin-bottom: 0.375rem;
}

.calenca__daylist-date {
  font-size: var(--cal-font-size);
  font-weight: 600;
  color: var(--cal-text);
}

.calenca__daylist-items {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.calenca__daylist-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: var(--cal-font-size);
  color: var(--cal-text);
  line-height: 1.4;
}

.calenca__daylist-item--html {
  display: block;
}

.calenca__daylist-icon {
  flex-shrink: 0;
  font-size: 0.875rem;
  line-height: 1.4;
}

.calenca__daylist-label {
  color: var(--cal-text-muted);
}

.calenca__daylist-group+.calenca__daylist-group {
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--cal-border);
}

.calenca__daylist-group-title {
  font-size: var(--cal-weekday-font-size);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--cal-text-muted);
  margin-bottom: 0.25rem;
}

.calenca__daylist-item-date {
  font-size: var(--cal-weekday-font-size);
  color: var(--cal-text-muted);
  flex-shrink: 0;
}

.calenca__daylist-item-body {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

/* ── Nights counter ───────────────────────────────────────────── */
.calenca__nights {
  background: var(--cal-nights-bg);
  color: var(--cal-nights-text);
  font-size: var(--cal-nights-font-size);
  padding: var(--cal-nights-padding);
  border-top: 1px solid var(--cal-border);
  border-radius: var(--cal-nights-radius);
  text-align: center;
  font-weight: 500;
  min-height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.calenca__nights:empty {
  min-height: 0;
  padding: 0;
  border-top: none;
}

/* ── Day data legend ──────────────────────────────────────────── */
.calenca__legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
  padding: 0.5rem 1rem 0.75rem;
  border-top: 1px solid var(--cal-border);
}

.calenca__legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: var(--cal-font-size);
  color: var(--cal-text-muted);
}

.calenca__legend-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
}

.calenca__legend-icon svg {
  width: 1em;
  height: 1em;
  display: block;
}

.calenca__legend-label {
  white-space: nowrap;
}

/* ── Tooltip ──────────────────────────────────────────────────── */
.calenca {
  --cal-tooltip-bg: #1f2937;
  --cal-tooltip-text: #ffffff;
  --cal-tooltip-font-size: 0.75rem;
  --cal-tooltip-radius: 0.25rem;
}

.calenca__tooltip {
  position: fixed;
  z-index: calc(var(--cal-z-index) + 1);
  background: var(--cal-tooltip-bg);
  color: var(--cal-tooltip-text);
  font-size: var(--cal-tooltip-font-size);
  border-radius: var(--cal-tooltip-radius);
  padding: 0.25rem 0.5rem;
  pointer-events: none;
  line-height: 1.4;
  max-width: 280px;
}

/* HTML tooltips may contain interactive elements (buttons, links) */
.calenca__tooltip--html {
  pointer-events: auto;
}

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

/* ── Popup mode ───────────────────────────────────────────────── */
.calenca--popup {
  position: absolute;
  z-index: var(--cal-z-index);
}

/* ── Loading state ────────────────────────────────────────────── */
.calenca__panel--loading {
  opacity: 0.6;
  pointer-events: none;
}

.calenca__loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  color: var(--cal-text-muted);
  font-size: var(--cal-font-size);
}

/* ── Reduced motion ───────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {

  .calenca,
  .calenca * {
    transition: none !important;
    animation: none !important;
  }
}



/* ── High contrast ────────────────────────────────────────────── */
@media (forced-colors: active) {

  .calenca__day--selected .calenca__day-num,
  .calenca__day--range-start .calenca__day-num,
  .calenca__day--range-end .calenca__day-num {
    forced-color-adjust: none;
    background: Highlight;
    color: HighlightText;
  }

  .calenca__day--today .calenca__day-num {
    border-color: Highlight;
  }

  .calenca__day--disabled .calenca__day-num {
    color: GrayText;
  }

  .calenca__nav-btn {
    forced-color-adjust: none;
  }

  .calenca__day:focus-visible .calenca__day-num,
  .calenca__day[tabindex="0"]:focus-visible .calenca__day-num {
    outline-color: ButtonText;
    box-shadow: none;
  }
}