/* ==========================================================================
   Base — reset, element defaults, focus states, motion preference
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  color-scheme: dark;
}

body {
  min-height: 100svh;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
}

img, picture, svg {
  display: block;
  max-width: 100%;
}

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration-color: color-mix(in srgb, currentColor 40%, transparent);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: var(--leading-tight);
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

ul, ol {
  padding: 0;
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -3rem;
  z-index: 100;
  background: var(--color-accent);
  color: var(--color-accent-text);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: top var(--duration-fast) var(--ease-out);
}

.skip-link:focus {
  top: var(--space-4);
}

/* ---- Focus states ------------------------------------------------------- */
/* Visible everywhere; suppressed only for mouse users via :focus-visible. */

:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Custom elements render nothing until JS defines them — hide to avoid a
   flash of unstyled/empty content, but only briefly and only if JS is
   actually going to run (progressive: if JS fails, content still appears
   after a beat via the browser's default unknown-element behaviour). */
twb-nav:not(:defined),
twb-footer:not(:defined) {
  display: block;
  min-height: 4rem;
}

/* ---- Scroll reveal (service cards, before/after sliders) ------------------ */

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: none;
}

/* ---- Reduced motion base ------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal-on-scroll,
  .hero [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
}