/* ============================================================================
   INPUT / TEXTAREA  -  figma frame 18:212 (Type x State)
   ----------------------------------------------------------------------------
   Only TIER-2 semantic tokens. The label, hint and error colours are driven off
   two data attributes on the group (`data-invalid`, `data-disabled`) plus
   `:focus-within`, so the whole 2x5 matrix is a handful of rules.

   Layout (the column and its gaps) is plain Tailwind spacing utilities in
   Input.tsx, and they name a step of the spacing scale (`gap-xs` = 8, `ms-2xs`
   = 4) rather than the raw `gap-1.5` / `ms-0.5` multiples of --spacing, which
   are tier-1. Everything token-driven lives here.

   BOX. As with the button, Figma strokes inside the frame, so the 1.5px border
   is subtracted from the 16/12 padding and the outer edge stays where it was
   drawn.

   DEVIATIONS FROM FIGMA, deliberate:
   * Height. Figma hand-sets 44px, which does not agree with its own 12px
     padding and 24px Body/Medium line-height. Following the tokens gives 48px,
     which is also exactly the Medium button, so a field and a button sitting on
     one row line up. Textarea keeps Figma's 120px, reached honestly as
     rows={4}: 4*24 + 10.5*2 + 1.5*2.
   * Focus. Figma paints a 2px grey (`stroke/hover`) border, which both moves
     the box by half a pixel and is not a WCAG-visible focus indicator. The
     border instead turns `--field-border-focus` at an unchanged 1.5px and the
     semantic focus ring is drawn outside it. The green label on focus is kept.
   * Disabled. Figma dims the whole group to 50%. The `--field-*-disabled`
     tokens already encode that reading and stay opaque, so no group opacity is
     applied and text on a translucent dark surface cannot smear.
   * The error caption is Figma's "Caption" role (Regular 12), which the type
     scale does not publish. It uses `body-sm` (14/20), the smallest published
     body role - more legible for a message a user has to act on.
   ========================================================================= */

@layer theme, base, components, utilities;

@layer components {
  /* ---------------------------------------------------------------------
     Label, hint, error
     ------------------------------------------------------------------ */
  .sh-field__label {
    color: var(--text-primary);
    transition: color var(--motion-duration-fast) var(--motion-ease-standard);
  }

  .sh-field:focus-within .sh-field__label {
    color: var(--text-accent);
  }

  .sh-field[data-invalid="true"] .sh-field__label,
  .sh-field[data-invalid="true"]:focus-within .sh-field__label {
    color: var(--text-danger);
  }

  .sh-field[data-disabled="true"] .sh-field__label {
    color: var(--text-disabled);
  }

  .sh-field__required {
    color: var(--text-danger);
  }

  .sh-field__hint {
    color: var(--text-secondary);
  }

  .sh-field[data-disabled="true"] .sh-field__hint {
    color: var(--text-disabled);
  }

  .sh-field__error {
    color: var(--text-danger);
  }

  /* ---------------------------------------------------------------------
     The control itself
     ------------------------------------------------------------------ */
  .sh-field__control {
    display: block;
    inline-size: 100%;
    appearance: none;
    background-color: var(--field-bg);
    color: var(--field-fg);
    border: var(--control-border-width) solid var(--field-border);
    border-radius: var(--radius-control-lg);
    padding-inline: calc(var(--control-padding-inline-md) - var(--control-border-width));
    padding-block: calc(var(--control-padding-block-md) - var(--control-border-width));
    text-align: start;
    transition:
      background-color var(--motion-duration-fast) var(--motion-ease-standard),
      border-color var(--motion-duration-fast) var(--motion-ease-standard),
      color var(--motion-duration-fast) var(--motion-ease-standard);
  }

  .sh-field__control::placeholder {
    color: var(--field-placeholder);
    opacity: 1;
  }

  @media (hover: hover) {
    .sh-field__control:hover:not(:disabled) {
      border-color: var(--field-border-hover);
    }
  }

  /* Matched to the hover rule's specificity and placed after it, so focusing
     a field the pointer happens to be over still shows the focus border. */
  .sh-field .sh-field__control:focus-visible {
    border-color: var(--field-border-focus);
    outline: var(--focus-ring-width) solid var(--focus-ring-color);
    outline-offset: var(--focus-ring-offset);
  }

  .sh-field[data-invalid="true"] .sh-field__control {
    border-color: var(--field-border-error);
  }

  .sh-field[data-invalid="true"] .sh-field__control:focus-visible {
    border-color: var(--field-border-error);
    outline-color: var(--field-border-error);
  }

  /* Last, and specific enough to win over the invalid border - a disabled
     field reads as disabled even when it is still holding an error. */
  .sh-field .sh-field__control:disabled {
    background-color: var(--field-bg-disabled);
    color: var(--field-fg-disabled);
    border-color: var(--border-subtle);
    cursor: not-allowed;
  }

  .sh-field .sh-field__control:disabled::placeholder {
    color: var(--field-fg-disabled);
  }

  /* Only the block axis resizes - growing a textarea sideways would break the
     column it sits in. */
  .sh-field__control--textarea {
    resize: vertical;
  }
}