/* ============================================================
   ui-controls.css — Soft & premium combobox + date picker.
   ============================================================
   Progressive-enhancement styles for any host page. The actual
   <select> and <input type="date"> stay in the form (hidden)
   so submission and validation keep working.

   Paired with: ui-controls.js
   Apply via:   <select data-ui="combobox">...</select>
                <input  data-ui="datepicker" type="date" />

   Tokens (override any of these at the page level to re-skin):
     --uic-bg            panel background
     --uic-bg-elev       hovered row background
     --uic-border        hairline color
     --uic-border-strong focused hairline
     --uic-text          primary text
     --uic-text-2        secondary text (eyebrows, months)
     --uic-text-mute     placeholder + disabled dates
     --uic-accent        selected pill + hover highlight
     --uic-accent-soft   accent @ low alpha for subtle tints
     --uic-shadow        popover drop shadow
     --uic-radius        corner radius for trigger + panel
     --uic-radius-sm     small radius (inputs, day cells)
   ============================================================ */

:where(.uic-root) {
  --uic-bg:            #ffffff;
  --uic-bg-elev:       #f5f8fd;
  --uic-border:        #e5e9f0;
  --uic-border-strong: #cbd5e1;
  --uic-text:          #0f172a;
  --uic-text-2:        #475569;
  --uic-text-mute:     #94a3b8;
  --uic-accent:        var(--partner-color, #3B7FE8);
  --uic-accent-soft:   color-mix(in srgb, var(--uic-accent) 12%, transparent);
  --uic-shadow:        0 1px 2px rgba(15,23,42,0.04),
                       0 12px 32px -8px rgba(15,23,42,0.14),
                       0 2px 6px rgba(15,23,42,0.05);
  --uic-radius:        14px;
  --uic-radius-sm:     10px;
  --uic-ease:          cubic-bezier(0.22, 1, 0.36, 1);
}

/* Keep the native control in the layout but visually hidden.
   Still focusable programmatically; FormData still reads it. */
.uic-native-hidden {
  position: absolute !important;
  inset: 0 !important;
  width: 100% !important;
  height: 100% !important;
  opacity: 0 !important;
  pointer-events: none !important;
  /* Prevent iOS from showing the native wheel if tapped. */
  -webkit-appearance: none;
  appearance: none;
}

/* ============================================================
   TRIGGER — the pill-shaped button that replaces <select> / <input>
   ============================================================ */
.uic-root {
  position: relative;
  display: block;
  width: 100%;
  font-family: inherit;
}

.uic-trigger {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  height: 48px;
  padding: 0 14px;
  background: var(--uic-bg);
  border: 1px solid var(--uic-border);
  border-radius: var(--uic-radius-sm);
  color: var(--uic-text);
  font: inherit;
  font-size: 15px;
  text-align: left;
  cursor: pointer;
  transition: border-color .18s var(--uic-ease),
              box-shadow    .18s var(--uic-ease),
              background    .18s var(--uic-ease);
}
.uic-trigger:hover { border-color: var(--uic-border-strong); }
.uic-trigger:focus-visible,
.uic-root[data-open="true"] .uic-trigger {
  outline: none;
  border-color: var(--uic-accent);
  box-shadow: 0 0 0 3px var(--uic-accent-soft);
}
.uic-trigger-label { flex: 1; min-width: 0;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.uic-trigger-label[data-placeholder="true"] { color: var(--uic-text-mute); }

.uic-trigger-caret {
  flex-shrink: 0;
  width: 16px; height: 16px;
  color: var(--uic-text-2);
  transition: transform .22s var(--uic-ease);
}
.uic-root[data-open="true"] .uic-trigger-caret { transform: rotate(180deg); }

/* Optional leading flag (combobox) or calendar icon (datepicker). */
.uic-trigger-icon { flex-shrink: 0; width: 16px; height: 16px; color: var(--uic-text-2); }

/* ============================================================
   POPOVER — shared shell for the combobox menu + calendar
   ============================================================ */
.uic-popover {
  position: absolute;
  left: 0; right: 0; top: calc(100% + 6px);
  z-index: 9999;
  background: var(--uic-bg);
  border: 1px solid var(--uic-border);
  border-radius: var(--uic-radius);
  box-shadow: var(--uic-shadow);
  overflow: hidden;
  transform-origin: top center;
  animation: uic-pop-in .18s var(--uic-ease);
}
/* When the combobox is open, lift the entire control above sibling
   stacking contexts (e.g. the .stats strip). Without this, an animated
   ancestor can cap the popover's effective z-index and lower-z-index
   siblings paint on top of the dropdown. */
.uic-root[data-open="true"] {
  z-index: 9999;
}
.uic-popover[data-align="right"] { left: auto; }

/* Datepicker popover shrinks to the calendar's intrinsic width (296px)
   instead of stretching to the trigger — otherwise the calendar floats
   in a sea of empty popover on wide form fields. */
.uic-root[data-ui-kind="datepicker"] .uic-popover {
  left: 0; right: auto;
  width: auto;
}
@keyframes uic-pop-in {
  from { opacity: 0; transform: translateY(-4px) scale(.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* ============================================================
   COMBOBOX — searchable list
   ============================================================ */
.uic-combo-search {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--uic-border);
}
.uic-combo-search svg { flex-shrink: 0; width: 16px; height: 16px; color: var(--uic-text-mute); }
.uic-combo-search input {
  flex: 1; min-width: 0;
  background: transparent; border: 0; outline: none;
  font: inherit; font-size: 14.5px; color: var(--uic-text);
}
.uic-combo-search input::placeholder { color: var(--uic-text-mute); }

.uic-combo-list {
  max-height: 320px;
  overflow-y: auto;
  padding: 6px;
  scrollbar-width: thin;
  scrollbar-color: var(--uic-border-strong) transparent;
}
.uic-combo-list::-webkit-scrollbar { width: 8px; }
.uic-combo-list::-webkit-scrollbar-thumb { background: var(--uic-border-strong); border-radius: 8px; }
.uic-combo-list::-webkit-scrollbar-track { background: transparent; }

.uic-combo-group-label {
  padding: 10px 10px 4px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--uic-text-mute);
}

.uic-combo-option {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px;
  border-radius: var(--uic-radius-sm);
  color: var(--uic-text);
  font-size: 14.5px;
  cursor: pointer;
  transition: background .12s var(--uic-ease), color .12s var(--uic-ease);
}
.uic-combo-option:hover,
.uic-combo-option[data-active="true"] { background: var(--uic-bg-elev); }
.uic-combo-option[data-selected="true"] {
  color: var(--uic-accent);
  font-weight: 600;
}
.uic-combo-option[data-selected="true"]::after {
  content: "";
  margin-left: auto;
  width: 16px; height: 16px;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg viewBox='0 0 16 16' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M13.5 4.5L6 12L2.5 8.5' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' fill='none'/%3E%3C/svg%3E") center/contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg viewBox='0 0 16 16' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M13.5 4.5L6 12L2.5 8.5' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' fill='none'/%3E%3C/svg%3E") center/contain no-repeat;
}
.uic-combo-empty {
  padding: 20px 14px;
  text-align: center;
  color: var(--uic-text-mute);
  font-size: 14px;
}

/* ============================================================
   DATE PICKER — calendar panel
   ============================================================ */
.uic-cal { padding: 14px; width: 296px; }

.uic-cal-head {
  display: flex; align-items: center; gap: 6px;
  margin-bottom: 10px;
}
.uic-cal-monthyear {
  flex: 1;
  display: flex; align-items: center; justify-content: center; gap: 6px;
}

/* Month / year pill buttons. Deliberately NOT <select> so the host
   page's select styles can't bleed in and so the dropdown UI stays
   premium (no OS-native option list). */
.uic-cal-pill {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--uic-bg);
  border: 1px solid var(--uic-border);
  border-radius: 9px;
  padding: 6px 10px;
  color: var(--uic-text);
  font: inherit; font-size: 14px; font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: background .12s var(--uic-ease),
              border-color .12s var(--uic-ease),
              box-shadow .12s var(--uic-ease);
}
.uic-cal-pill:hover { background: var(--uic-bg-elev); border-color: var(--uic-border-strong); }
.uic-cal-pill[data-active="true"] {
  border-color: var(--uic-accent);
  box-shadow: 0 0 0 2px var(--uic-accent-soft);
}
.uic-cal-pill svg {
  width: 10px; height: 10px;
  opacity: .55;
  transition: transform .18s var(--uic-ease);
}
.uic-cal-pill[data-active="true"] svg { transform: rotate(180deg); }

/* Body area — consistent height across modes so the popover doesn't jump. */
.uic-cal-body { min-height: 244px; }

/* Month / year picker grids (mode-switched views inside the calendar body). */
.uic-cal-monthgrid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  padding: 4px 0;
}
.uic-cal-yeargrid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  max-height: 236px;
  overflow-y: auto;
  padding: 4px 2px;
  scrollbar-width: thin;
}
.uic-cal-yeargrid::-webkit-scrollbar { width: 6px; }
.uic-cal-yeargrid::-webkit-scrollbar-thumb {
  background: var(--uic-border-strong);
  border-radius: 3px;
}
.uic-cal-pillcell {
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--uic-radius-sm);
  padding: 10px 6px;
  color: var(--uic-text);
  font: inherit; font-size: 13px; font-weight: 500;
  cursor: pointer;
  transition: background .12s var(--uic-ease), color .12s var(--uic-ease), border-color .12s var(--uic-ease);
}
.uic-cal-pillcell:hover:not(:disabled):not([data-selected="true"]) {
  background: var(--uic-bg-elev);
}
.uic-cal-pillcell[data-selected="true"] {
  background: var(--uic-accent);
  color: white;
  font-weight: 600;
}
.uic-cal-pillcell:disabled {
  color: var(--uic-text-mute);
  opacity: .4;
  cursor: not-allowed;
}

.uic-cal-nav {
  width: 30px; height: 30px;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid var(--uic-border);
  border-radius: 8px;
  color: var(--uic-text-2);
  cursor: pointer;
  transition: background .12s var(--uic-ease), border-color .12s var(--uic-ease), color .12s var(--uic-ease);
}
.uic-cal-nav:hover {
  background: var(--uic-bg-elev);
  border-color: var(--uic-border-strong);
  color: var(--uic-text);
}
.uic-cal-nav svg { width: 14px; height: 14px; }

.uic-cal-dow {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
  margin-bottom: 4px;
}
.uic-cal-dow span {
  text-align: center;
  font-size: 11px; font-weight: 600;
  color: var(--uic-text-mute);
  letter-spacing: .04em;
  padding: 6px 0;
}

.uic-cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
}
.uic-cal-day {
  aspect-ratio: 1 / 1;
  display: flex; align-items: center; justify-content: center;
  background: transparent;
  border: 0;
  border-radius: var(--uic-radius-sm);
  color: var(--uic-text);
  font: inherit; font-size: 13px;
  cursor: pointer;
  transition: background .12s var(--uic-ease), color .12s var(--uic-ease), transform .1s var(--uic-ease);
}
.uic-cal-day:hover:not(:disabled):not([data-selected="true"]) {
  background: var(--uic-bg-elev);
}
.uic-cal-day[data-other-month="true"] { color: var(--uic-text-mute); opacity: .6; }
.uic-cal-day[data-today="true"] {
  position: relative;
}
.uic-cal-day[data-today="true"]::after {
  content: "";
  position: absolute;
  bottom: 5px; left: 50%;
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--uic-accent);
  transform: translateX(-50%);
}
.uic-cal-day[data-selected="true"] {
  background: var(--uic-accent);
  color: white;
  font-weight: 600;
}
.uic-cal-day[data-selected="true"]::after { background: white; }
.uic-cal-day:disabled {
  color: var(--uic-text-mute);
  opacity: .35;
  cursor: not-allowed;
}

.uic-cal-foot {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--uic-border);
}
.uic-cal-link {
  background: transparent; border: 0;
  padding: 4px 6px;
  color: var(--uic-accent);
  font: inherit; font-size: 13px; font-weight: 500;
  cursor: pointer;
  border-radius: 6px;
  transition: background .12s var(--uic-ease);
}
.uic-cal-link:hover { background: var(--uic-accent-soft); }
.uic-cal-link:disabled { color: var(--uic-text-mute); cursor: not-allowed; }
.uic-cal-link:disabled:hover { background: transparent; }

/* Inline error row (shared with host forms). */
.uic-field-error {
  margin-top: 6px;
  font-size: 13px;
  color: #dc2626;
}