/* ==========================================================================
   AAPRO — Base styles: reset, typography, layout primitives
   ========================================================================== */

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

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

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-primary);
  transition: background-color var(--dur-base) var(--ease-soft), color var(--dur-base) var(--ease-soft);
  overflow-x: hidden;
}

body.no-scroll { overflow: hidden; }

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

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

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

button { font-family: inherit; cursor: pointer; }

input, textarea, select, button { font-family: inherit; font-size: inherit; }

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.15;
  margin: 0 0 var(--space-sm);
  color: var(--text-primary);
  letter-spacing: 0.005em;
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
h4 { font-size: var(--fs-h4); font-family: var(--font-body); font-weight: 500; letter-spacing: 0.02em; }

p { margin: 0 0 var(--space-sm); color: var(--text-secondary); }

.lede {
  font-size: var(--fs-body-lg);
  color: var(--text-secondary);
  max-width: 62ch;
}

/* ---- Focus states — accessible on every interactive element ---- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--color-burgundy);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-burgundy);
  color: var(--color-ivory);
  padding: var(--space-xs) var(--space-sm);
  z-index: 999;
  border-radius: 0 0 var(--radius-md) 0;
}
.skip-link:focus { left: 0; }

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

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

.container--narrow { max-width: var(--container-narrow); }

.section {
  padding-block: var(--space-2xl);
}

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

.section--inverse {
  background: var(--bg-inverse);
  color: var(--text-inverse);
}
.section--inverse h1, .section--inverse h2, .section--inverse h3, .section--inverse p { color: var(--text-inverse); }
.section--inverse .lede { color: var(--color-sage-light); }

.section--accent {
  background: var(--bg-accent);
  color: var(--color-ivory);
}
.section--accent h1, .section--accent h2, .section--accent h3 { color: var(--color-ivory); }
.section--accent p { color: var(--color-sage-light); }

.section--surface { background: var(--bg-secondary); }

.grid {
  display: grid;
  gap: var(--space-md);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 980px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* Concept-to-creation journey (sketch -> CAD -> finished, with connecting arrows) */
.ctc-journey {
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
}
.ctc-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-burgundy);
  opacity: 0.55;
}
.ctc-arrow svg { width: 26px; height: 26px; animation: ctcArrowPulse 1.8s ease-in-out infinite; }
@keyframes ctcArrowPulse {
  0%, 100% { transform: translateX(0); opacity: 0.5; }
  50% { transform: translateX(5px); opacity: 1; }
}
@media (max-width: 980px) {
  .ctc-journey { grid-template-columns: 1fr; }
  .ctc-arrow { transform: rotate(90deg); margin: 0 auto; }
}
@media (prefers-reduced-motion: reduce) {
  .ctc-arrow svg { animation: none; }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-family: var(--font-body);
  font-size: var(--fs-micro);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-burgundy);
  font-weight: 500;
  margin-bottom: var(--space-sm);
}
.eyebrow::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--color-burgundy);
  display: inline-block;
}
/* Dark mode: burgundy text/line is nearly invisible on the near-black
   background, so swap to the lighter sage accent used elsewhere in dark mode. */
[data-theme="dark"] .eyebrow { color: var(--color-sage-light); }
[data-theme="dark"] .eyebrow::before { background: var(--color-sage-light); }
[data-theme="dark"] .ctc-arrow { color: var(--color-sage-light); }

.section-head {
  max-width: 720px;
  margin-bottom: var(--space-lg);
}
.section-head.center { margin-inline: auto; text-align: center; }
.section-head.center .eyebrow { justify-content: center; }
.section-head.center .eyebrow::before { display: none; }

hr.divider {
  border: none;
  height: 1px;
  background: var(--border-subtle);
  margin: var(--space-lg) 0;
}

::selection {
  background: var(--color-sage);
  color: var(--color-charcoal);
}