/* ═══ REN DATE PICKER WEB COMPONENT ═══
   A composable date picker that wraps the calendar component
   with an input field and popover dropdown.
   Uses Popover API for positioning with CSS anchor positioning.
   ══════════════════════════════════════════════════════════════════ */

/* ═══ BASE WRAPPER ═══ */
.ren-date-picker {
  display: inline-flex;
  flex-direction: column;
  width: 100%;
  max-width: 100%;
  position: relative;
}

/* ═══ TRIGGER INPUT ═══ */
.ren-date-picker-trigger {
  anchor-name: --ren-date-picker-anchor;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--body-size);
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition-tactile);
  min-height: var(--touch-min);

  &:hover:not([disabled]) {
    border-color: var(--color-border-strong);
  }

  &:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    border-color: var(--color-accent);
  }

  &[disabled] {
    background: var(--color-fill);
    color: var(--color-text-muted);
    cursor: not-allowed;
    opacity: 0.6;
  }

  /* ═══ PLACEHOLDER TEXT ═══ */
  &::placeholder {
    color: var(--color-text-muted);
  }

  /* ═══ CALENDAR ICON (::after) ═══ */
  &::after {
    content: '📅';
    font-size: 1.25em;
    flex-shrink: 0;
    pointer-events: none;
  }
}

/* ═══ TRIGGER TEXT CONTENT ═══ */
.ren-date-picker-value {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ═══ EMPTY STATE ═══ */
.ren-date-picker-trigger.ren-date-picker-empty {
  color: var(--color-text-muted);

  .ren-date-picker-value {
    display: none;
  }

  &::before {
    content: attr(data-placeholder);
    color: var(--color-text-muted);
  }
}

/* ═══ DROPDOWN CONTAINER (POPOVER) ═══ */
.ren-date-picker-dropdown {
  position-anchor: --ren-date-picker-anchor;
  position: absolute;
  position-area: bottom span-all;
  position-try-fallbacks: flip-block, flip-inline, flip-block flip-inline;
  inset: auto;
  margin: 0;
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  max-width: 400px;

  /* ═══ POPOVER API ═══ */
  &[popover] {
    padding: 0;
    margin: 0;
  }

  &:popover-open {
    background: var(--color-surface-raised);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: ren-date-picker-popup-in var(--duration-enter) var(--ease-enter) both;
  }
}

.ren-date-picker-dropdown[data-side="bottom"],
.ren-date-picker-dropdown:not([data-side]) {
  position-area: bottom span-all;
  margin-block-start: var(--space-2);
  margin-block-end: 0;
  margin-inline: 0;
}

.ren-date-picker-dropdown[data-side="top"] {
  position-area: top span-all;
  margin-block-start: 0;
  margin-block-end: var(--space-2);
  margin-inline: 0;
}

.ren-date-picker-dropdown[data-side="right"] {
  position-area: right span-all;
  margin-block: 0;
  margin-inline-start: var(--space-2);
  margin-inline-end: 0;
}

.ren-date-picker-dropdown[data-side="left"] {
  position-area: left span-all;
  margin-block: 0;
  margin-inline-start: 0;
  margin-inline-end: var(--space-2);
}

/* ═══ FALLBACK POSITIONING (no complete anchor support) ═══ */
@supports not ((anchor-name: --ren-anchor) and
  (position-anchor: --ren-anchor) and
  (position-area: bottom span-all)) {
  .ren-date-picker-dropdown {
    position: fixed;
    top: auto;
    left: auto;
  }
}

/* ═══ ANIMATION: POPUP IN ═══ */
@starting-style {
  .ren-date-picker-dropdown:popover-open {
    opacity: 0;
    translate: 0 -8px;
  }
}

@keyframes ren-date-picker-popup-in {
  from {
    opacity: 0;
    translate: 0 -8px;
  }

  to {
    opacity: 1;
    translate: 0 0;
  }
}

/* ═══ CALENDAR INSIDE DROPDOWN ═══ */
.ren-date-picker-dropdown .ren-calendar {
  border: none;
  box-shadow: none;
  background: var(--color-surface-raised);
  padding: var(--space-3);
}

/* ═══ PRESETS SECTION ═══ */
.ren-date-picker-presets {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: var(--space-3);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.ren-date-picker-preset {
  padding: var(--space-1-5) var(--space-3);
  background: var(--color-fill);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--label-size);
  font-weight: var(--label-weight);
  cursor: pointer;
  transition: var(--transition-tactile);

  &:hover {
    background: var(--color-fill-hover);
    border-color: var(--color-border-strong);
  }

  &:active {
    background: var(--color-fill-active);
  }

  &:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
  }

  &[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
  }
}

/* ═══ RANGE MODE: SHOW START AND END ═══ */
.ren-date-picker.ren-date-picker-range .ren-date-picker-value::after {
  content: ' → ';
  margin: 0 var(--space-1);
}

/* ═══ DISABLED STATE ═══ */
.ren-date-picker[disabled] {
  opacity: 0.6;
  pointer-events: none;

  .ren-date-picker-trigger {
    cursor: not-allowed;
  }
}

/* ═══ REDUCED MOTION SUPPORT ═══ */
@media (prefers-reduced-motion: reduce) {
  .ren-date-picker-dropdown:popover-open {
    animation: none;
    opacity: 1;
    translate: 0 0;
  }

  .ren-date-picker-dropdown {
    transition: none;
  }
}

/* ═══ DARK MODE SUPPORT ═══ */
@media (prefers-color-scheme: dark) {
  .ren-date-picker-trigger,
  .ren-date-picker-dropdown {
    /* ═══ USES CSS VARIABLES - AUTO ADAPTS ═══ */
  }
}

/* ═══ MOBILE RESPONSIVENESS ═══ */
@media (max-width: 480px) {
  .ren-date-picker-dropdown {
    position: fixed !important;
    inset: auto 0 0 0 !important;
    max-width: none;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    max-height: 80vh;
    overflow-y: auto;

    &:popover-open {
      animation: ren-date-picker-mobile-in var(--duration-enter) var(--ease-enter) both;
    }
  }

  @starting-style {
    .ren-date-picker-dropdown:popover-open {
      translate: 0 100%;
      opacity: 0;
    }
  }

}

@keyframes ren-date-picker-mobile-in {
  from {
    translate: 0 100%;
    opacity: 0;
  }

  to {
    translate: 0 0;
    opacity: 1;
  }
}

/* ═══ ERROR STATE ═══ */
.ren-date-picker.ren-date-picker-error {
  .ren-date-picker-trigger {
    border-color: var(--color-danger);

    &:focus-visible {
      outline-color: var(--color-danger);
      border-color: var(--color-danger);
    }
  }
}

/* ═══ SUCCESS STATE ═══ */
.ren-date-picker.ren-date-picker-success {
  .ren-date-picker-trigger {
    border-color: var(--color-success);

    &:focus-visible {
      outline-color: var(--color-success);
      border-color: var(--color-success);
    }
  }
}

/* ═══ FORM INTEGRATION ═══ */
.ren-date-picker {
  /* ═══ ALLOW FORM STYLING ═══ */

  input[type='hidden'] {
    display: none;
  }
}