/* ==========================================================================
   BORGE ENGINEERING (India) — Base / Reset
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  margin: 0;
  color: var(--color-graphite);
}

p { margin: 0; }

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

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

.skip-link {
  position: absolute;
  inset-block-start: -100px;
  inset-inline-start: var(--space-2);
  z-index: var(--z-modal);
  background: var(--color-white);
  color: var(--color-graphite);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: top var(--duration-fast) var(--ease-out);
}
.skip-link:focus { inset-block-start: var(--space-2); }

/* Visible keyboard focus — never remove outline without replacing it */
:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 3px;
}

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

.section {
  padding-block: var(--space-7);
}

/* Fixed header covers the top of the viewport — offset anchor targets
   so #services / #sectors / #contact land below it, not under it. */
section[id] {
  scroll-margin-top: var(--header-height);
}

.section--dark {
  background: var(--color-bg-dark);
  color: var(--color-text-inverse);
}

.section--dark h1,
.section--dark h2,
.section--dark h3 { color: var(--color-white); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-maroon);
}

.section--dark .eyebrow { color: var(--color-gold); }

.eyebrow::before {
  content: "";
  width: 18px;
  height: 2px;
  background: currentColor;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.9rem 1.75rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  transition: transform var(--duration-fast) var(--ease-out),
              background var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.btn--primary {
  background: var(--color-maroon);
  color: var(--color-white);
}
.btn--primary:hover {
  background: var(--color-maroon-deep);
  box-shadow: var(--shadow-md);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-inverse);
  border: 1px solid rgba(246, 244, 240, 0.35);
}
.btn--ghost:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.btn:active { transform: translateY(1px); }

/* ---- Generic scroll-reveal utility ----
   JS toggles .is-visible on elements carrying [data-reveal]
   once they cross the viewport threshold (see js/main.js) */
[data-reveal] {
  opacity: 0;
  transform: translateY(var(--reveal-distance));
  transition: opacity var(--reveal-duration) var(--ease-out),
              transform var(--reveal-duration) var(--ease-out);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}