/* ==========================================================================
   Range & Motion — Base Styles
   Reset, typography, global rules, scroll-reveal animation
   ========================================================================== */

/* ── Reset ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  font-size: var(--size-base);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
  color: var(--color-navy);
  background-color: var(--color-off-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

p, h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
}

ul, ol {
  list-style: none;
}

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

/* ── Typography ── */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headline);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-navy);
}

h1 { font-size: var(--size-5xl); font-weight: var(--weight-black); }
h2 { font-size: var(--size-3xl); }
h3 { font-size: var(--size-xl); }
h4 { font-size: var(--size-lg); }

@media (max-width: 768px) {
  h1 { font-size: var(--size-3xl); }
  h2 { font-size: var(--size-2xl); }
  h3 { font-size: var(--size-lg); }
}

@media (max-width: 480px) {
  h1 { font-size: var(--size-2xl); }
  h2 { font-size: var(--size-xl); }
}

p {
  font-family: var(--font-body);
  font-size: var(--size-md);
  line-height: var(--leading-normal);
  color: var(--color-navy);
}

.eyebrow {
  display: block;
  font-family: var(--font-headline);
  font-size: var(--size-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-sage);
  margin-bottom: var(--space-3);
}

.lora-italic {
  font-family: var(--font-body);
  font-style: italic;
}

/* ── Layout Utilities ── */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-8);
  padding-right: var(--space-8);
}

@media (max-width: 768px) {
  .container {
    padding-left: var(--space-5);
    padding-right: var(--space-5);
  }
}

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

.section {
  padding-top: var(--space-32);
  padding-bottom: var(--space-32);
}

@media (max-width: 768px) {
  .section {
    padding-top: var(--space-20);
    padding-bottom: var(--space-20);
  }
}

/* Surface backgrounds */
.surface-off-white { background-color: var(--color-off-white); }
.surface-sand      { background-color: var(--color-sand); }
.surface-navy      { background-color: var(--color-navy); }
.surface-sage-tint { background-color: var(--color-sage-tint); }

/* Text on dark */
.surface-navy h1,
.surface-navy h2,
.surface-navy h3,
.surface-navy h4,
.surface-navy p,
.on-dark { color: var(--color-sand); }

.surface-navy .eyebrow { color: var(--color-sage); }

/* ── Section Header ── */

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-header .section-title {
  margin-bottom: var(--space-5);
}

.section-header .section-sub {
  font-family: var(--font-body);
  font-size: var(--size-md);
  line-height: var(--leading-loose);
  color: rgba(13, 27, 42, 0.70);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.surface-navy .section-header .section-sub {
  color: rgba(242, 233, 216, 0.70);
}

/* ── Scroll Reveal Animation ── */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity var(--duration-reveal) var(--ease-out),
    transform var(--duration-reveal) var(--ease-out);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }
.reveal-delay-4 { transition-delay: 400ms; }
.reveal-delay-5 { transition-delay: 500ms; }

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal.revealed {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ── Accessibility ── */

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--color-navy);
  color: var(--color-sand);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-family: var(--font-headline);
  font-size: var(--size-sm);
  font-weight: var(--weight-semibold);
  z-index: 9999;
  transition: top var(--duration-fast);
}

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

/* Visually hidden but accessible to screen readers */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus ring */
:focus-visible {
  outline: 2px solid var(--color-sage);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ── Divider ── */
.divider {
  width: 48px;
  height: 2px;
  background: var(--color-sage);
  margin: var(--space-6) auto;
  border: none;
}

/* ── Utility ── */
.text-center { text-align: center; }
.text-left   { text-align: left; }