/* ==========================================================================
   Due Date Component
   Displays and edits due dates with urgency-based colors and picker modal
   ========================================================================== */

@layer components {
  /* -------------------------------------------------------------------------
     Display State - The clickable due date trigger
     ------------------------------------------------------------------------- */

  .due-date {
    display: inline-flex;
    align-items: center;
    gap: var(--inline-space-half);
    padding: 0.25em 0.5em;
    border-radius: var(--btn-radius);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    border: none;
    background: transparent;
    transition: background-color var(--duration-fast) var(--ease-out);
  }

  .due-date:hover {
    background: var(--color-canvas-alt);
  }

  .due-date:focus-visible {
    outline: var(--focus-ring-size) solid var(--focus-ring-color);
    outline-offset: var(--focus-ring-offset);
  }

  .due-date__icon {
    display: flex;
    flex-shrink: 0;
  }

  .due-date__icon svg {
    inline-size: 1em;
    block-size: 1em;
  }

  /* Urgency color variants */
  .due-date--urgent {
    color: var(--color-negative);
  }

  .due-date--soon {
    color: oklch(65% 0.15 50); /* Orange */
  }

  .due-date--week {
    color: var(--color-positive); /* Green */
  }

  .due-date--later {
    color: var(--color-ink-muted);
  }

  /* Placeholder when no due date set */
  .due-date--empty {
    color: var(--color-ink-muted);
  }

  .due-date--empty:hover {
    color: var(--color-ink-subtle);
  }

  /* -------------------------------------------------------------------------
     Modal Backdrop
     ------------------------------------------------------------------------- */

  .due-date-picker__backdrop {
    position: fixed;
    inset: 0;
    background: oklch(20% 0 0 / 50%);
    z-index: var(--z-modal);
    animation: fade-in var(--duration-fast) var(--ease-out);
  }

  @keyframes fade-in {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }

  /* -------------------------------------------------------------------------
     Modal Container
     ------------------------------------------------------------------------- */

  .due-date-picker__modal {
    position: fixed;
    inset-block-start: 50%;
    inset-inline-start: 50%;
    transform: translate(-50%, -50%);
    background: var(--color-canvas);
    border-radius: var(--card-radius);
    box-shadow:
      var(--shadow-md),
      0 8px 32px oklch(20% 0 0 / 20%);
    z-index: calc(var(--z-modal) + 1);
    min-inline-size: 580px;
    max-inline-size: 95vw;
    max-block-size: 95vh;
    overflow: auto;
    animation: modal-in var(--duration-normal) var(--ease-out);
  }

  @keyframes modal-in {
    from {
      opacity: 0;
      transform: translate(-50%, -48%);
    }
    to {
      opacity: 1;
      transform: translate(-50%, -50%);
    }
  }

  /* -------------------------------------------------------------------------
     Modal Header
     ------------------------------------------------------------------------- */

  .due-date-picker__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--block-space) var(--inline-space-double);
    border-block-end: 1px solid var(--color-border);
  }

  .due-date-picker__title {
    font-size: var(--text-base);
    font-weight: 500;
    color: var(--color-ink);
    margin: 0;
  }

  .due-date-picker__close {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5em;
    border: none;
    background: transparent;
    color: var(--color-ink-muted);
    cursor: pointer;
    border-radius: 0.25rem;
    transition:
      color var(--duration-fast),
      background-color var(--duration-fast);
  }

  .due-date-picker__close:hover {
    color: var(--color-ink);
    background: var(--color-canvas-alt);
  }

  .due-date-picker__close svg {
    inline-size: 1.25em;
    block-size: 1.25em;
  }

  /* -------------------------------------------------------------------------
     Calendar Section
     ------------------------------------------------------------------------- */

  .due-date-picker__body {
    padding: var(--block-space-double) var(--inline-space-double);
  }

  .due-date-picker__calendars {
    display: flex;
    gap: var(--inline-space-triple);
  }

  .due-date-picker__month {
    flex: 1;
  }

  .due-date-picker__month-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-block-end: var(--block-space);
  }

  .due-date-picker__month-title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-ink);
  }

  .due-date-picker__nav {
    display: flex;
    gap: 0.25rem;
  }

  .due-date-picker__nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.375em;
    border: none;
    background: transparent;
    color: var(--color-ink-muted);
    cursor: pointer;
    border-radius: 0.25rem;
    transition:
      color var(--duration-fast),
      background-color var(--duration-fast);
  }

  .due-date-picker__nav-btn:hover {
    color: var(--color-ink);
    background: var(--color-canvas-alt);
  }

  .due-date-picker__nav-btn svg {
    inline-size: 1em;
    block-size: 1em;
  }

  /* Calendar Grid */
  .due-date-picker__weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    margin-block-end: var(--block-space-half);
  }

  .due-date-picker__weekday {
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-ink-muted);
    text-align: center;
    padding-block-end: 0.5em;
  }

  .due-date-picker__grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
  }

  .due-date-picker__day {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1;
    font-size: var(--text-sm);
    color: var(--color-ink);
    border: none;
    background: transparent;
    cursor: pointer;
    border-radius: 50%;
    transition:
      background-color var(--duration-fast),
      color var(--duration-fast);
  }

  .due-date-picker__day:hover:not(.due-date-picker__day--selected) {
    background: var(--color-canvas-alt);
  }

  .due-date-picker__day:focus-visible {
    outline: var(--focus-ring-size) solid var(--focus-ring-color);
    outline-offset: 1px;
  }

  .due-date-picker__day--other-month {
    color: var(--color-ink-muted);
    opacity: 0.5;
  }

  .due-date-picker__day--today {
    font-weight: 600;
    box-shadow: inset 0 0 0 2px var(--color-primary);
  }

  .due-date-picker__day--selected {
    background: var(--color-primary);
    color: white;
    font-weight: 500;
  }

  .due-date-picker__day--selected.due-date-picker__day--today {
    box-shadow: none;
  }

  /* -------------------------------------------------------------------------
     Actions Footer
     ------------------------------------------------------------------------- */

  .due-date-picker__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--block-space) var(--inline-space-double);
    border-block-start: 1px solid var(--color-border);
    background: var(--color-canvas-alt);
    border-end-start-radius: var(--card-radius);
    border-end-end-radius: var(--card-radius);
  }

  .due-date-picker__quick-actions {
    display: flex;
    gap: var(--inline-space-half);
  }

  .due-date-picker__save-actions {
    display: flex;
    gap: var(--inline-space-half);
  }
}