/* ==========================================================================
   M3 Expressive — interaction feedback + opening performance
   --------------------------------------------------------------------------
   Additive layer. Load after m3.css and m3-expressive-enhancements.css.
   CSS only: no extra JavaScript, images, fonts or third-party requests.

   Intent:
   - tactile hover / press / focus feedback on real controls only
   - short, interruptible transitions (transform + colour, never layout)
   - keyboard focus that is always visible
   - touch and reduced-motion behaviour that does not rely on hover
   - faster content reveal without changing layout
   ========================================================================== */

:root {
  --m3ip-hover: 140ms;
  --m3ip-press: 80ms;
  --m3ip-reveal: 320ms;
  --m3ip-ease: cubic-bezier(.2, 0, 0, 1);
  --m3ip-press-scale: .975;
}

/* Taps respond immediately instead of waiting for a possible double-tap. */
a[href],
button,
summary,
[role="button"],
input[type="checkbox"],
input[type="radio"] {
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(0, 107, 91, .16);
}

/* ---------- Transition rhythm ------------------------------------------- */
/* One short duration across controls keeps pointer feedback from feeling
   laggy. Long decorative transitions stay on the surfaces that own them. */
.btn,
.chip,
.icon-btn,
.primary-nav a,
.segmented button,
.card__link,
.nav-sheet__links a,
.site-footer__cols a,
.bottom-nav a {
  transition-property: color, background-color, border-color, box-shadow, transform, opacity;
  transition-duration: var(--m3ip-hover);
  transition-timing-function: var(--m3ip-ease);
}

.card,
.truck-card {
  transition-property: transform, box-shadow, border-color, border-radius;
  transition-duration: var(--m3ip-hover);
  transition-timing-function: var(--m3ip-ease);
}

.btn svg,
.card__link svg,
.nav-sheet__links a svg,
.card__icon,
.faq-icon {
  transition-duration: var(--m3ip-hover);
  transition-timing-function: var(--m3ip-ease);
}

.card__link {
  text-underline-offset: 4px;
}

/* ---------- Hover (fine pointers only) ---------------------------------- */
@media (hover: hover) and (pointer: fine) {
  .btn:hover {
    transform: translateY(-1px);
  }

  .chip:not(.chip--static):hover,
  .primary-nav a:hover,
  .segmented button:hover {
    transform: translateY(-1px);
  }

  .icon-btn:hover {
    transform: scale(1.04);
  }

  .card:hover,
  .truck-card:hover {
    border-color: color-mix(in srgb, currentColor 22%, transparent);
  }

  .card__link:hover {
    text-decoration-thickness: 2px;
  }

  .faq-item summary:hover .faq-icon {
    background: var(--primary-container);
  }

  .faq-item:not([open]) summary:hover .faq-icon {
    transform: scale(1.06);
  }

  .faq-item[open] summary:hover .faq-icon {
    transform: rotate(180deg) scale(1.06);
  }

  .nav-sheet__links a:hover svg {
    transform: translateX(3px);
  }
}

/* ---------- Press ------------------------------------------------------- */
.btn:active,
.chip:not(.chip--static):active,
.primary-nav a:active,
.segmented button:active,
.bottom-nav a:active {
  transform: translateY(0) scale(var(--m3ip-press-scale));
  transition-duration: var(--m3ip-press);
}

.btn:active {
  box-shadow: none;
}

.icon-btn:active {
  transform: scale(.92);
  transition-duration: var(--m3ip-press);
}

.faq-item summary:active {
  background: var(--surface-high);
}

.card__link:active {
  color: var(--primary);
  text-decoration-thickness: 2px;
}

.nav-sheet__links a:active svg {
  transform: translateX(1px);
}

.nav-sheet__links a:active {
  background: var(--surface-container);
}

.site-footer__cols a:active {
  transform: translateX(1px) scale(.995);
  transition-duration: var(--m3ip-press);
}

/* A focused FAQ row gets a surface tint in addition to the outline. */
.faq-item summary:focus-visible {
  background: color-mix(in srgb, var(--surface-container) 72%, transparent);
}

/* The global ring is good; this keeps it clear of clipped card edges. */
.card :focus-visible,
.truck-card :focus-visible {
  outline-offset: 4px;
}

/* ---------- Disabled / unavailable -------------------------------------- */
.btn[aria-disabled="true"],
button[disabled],
input[disabled],
select[disabled],
textarea[disabled] {
  opacity: .55;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* ---------- Touch: no sticky hover, keep the press ---------------------- */
@media (hover: none) {
  .btn:hover,
  .chip:not(.chip--static):hover,
  .card:hover,
  .truck-card:hover,
  .primary-nav a:hover,
  .icon-btn:hover,
  .segmented button:hover {
    transform: none;
  }
}

/* ---------- Faster reveal ------------------------------------------------ */
/* The base sheet reveals over .7s from 26px away. That reads as delay on a
   content-heavy page; a shorter, smaller move keeps the same character. */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity var(--m3ip-reveal) var(--m3ip-ease),
    transform var(--m3ip-reveal) var(--ease-spring);
  transition-delay: 0ms;
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* A card focused by keyboard should not stay in its pre-reveal offset. */
.js [data-reveal]:focus-within {
  opacity: 1;
  transform: none;
}

.js .card:focus-within,
.js .truck-card:focus-within {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, currentColor 24%, transparent);
  box-shadow: var(--shadow-2);
}

/* ---------- Reduced motion ---------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .btn,
  .chip,
  .icon-btn,
  .primary-nav a,
  .segmented button,
  .card__link,
  .nav-sheet__links a,
  .site-footer__cols a,
  .bottom-nav a,
  .card,
  .truck-card,
  .card__icon,
  .faq-icon,
  .btn svg,
  .card__link svg,
  .nav-sheet__links a svg {
    transition: none !important;
    transform: none !important;
  }

  .js [data-reveal],
  .js [data-reveal].is-visible {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .card:focus-within,
  .truck-card:focus-within {
    transform: none !important;
  }

  .brand:hover .brand__mark {
    transform: none !important;
  }
}

/* ---------- High contrast ----------------------------------------------- */
@media (prefers-contrast: more) {
  .card:hover,
  .truck-card:hover,
  .card:focus-within,
  .truck-card:focus-within {
    border-color: var(--outline);
  }

  .faq-item summary:focus-visible {
    background: var(--surface);
    outline-width: 4px;
  }
}

/* ---------- Print ------------------------------------------------------- */
@media print {
  .js [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
}