/**
 * base.css — reset, typography, layout primitives, buttons, header & footer
 * ---------------------------------------------------------------------------
 * Global foundations shared by every page. Page/section-specific styles live
 * in pages.css; reusable widgets (cards, carousels, forms) in components.css.
 */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-md);
  line-height: 1.65;
  color: var(--clr-ink);
  background: var(--clr-bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--clr-primary);
}

/* Visible keyboard focus everywhere */
:focus-visible {
  outline: 3px solid var(--clr-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Skip link for keyboard/screen-reader users */
.skip-link {
  position: absolute;
  top: -3rem;
  left: var(--space-3);
  background: var(--clr-primary);
  color: #fff;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  z-index: 200;
  transition: top var(--dur-fast) var(--ease-out);
}

.skip-link:focus {
  top: var(--space-2);
}

/* ── Typography ────────────────────────────────────────────────────────── */
h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  color: var(--clr-primary-dark);
  text-wrap: balance;
}

.section-title {
  font-size: var(--text-2xl);
  text-align: center;
  margin-bottom: var(--space-3);
}

.section-lede {
  max-width: 44rem;
  margin: 0 auto var(--space-5);
  text-align: center;
  color: var(--clr-ink-soft);
  font-size: var(--text-lg);
}

/* ── Layout ────────────────────────────────────────────────────────────── */
.container {
  width: min(var(--container), 100% - 2.5rem);
  margin-inline: auto;
}

.section {
  padding-block: var(--space-6);
}

.section--tint {
  background: var(--clr-primary-soft);
}

/* ── Buttons ───────────────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--text-md);
  padding: 0.8em 1.9em;
  border-radius: var(--radius-pill);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition:
    transform var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-fast) var(--ease-out),
    background-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--clr-accent);
  color: var(--clr-primary-dark);
}

.btn-primary:hover {
  background: var(--clr-accent-dark);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: inherit;
  border-color: currentColor;
}

/* ── Header / navigation ───────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(251, 249, 244, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition:
    box-shadow var(--dur-med) var(--ease-out),
    border-color var(--dur-med) var(--ease-out);
}

.site-header.is-scrolled {
  border-bottom-color: var(--clr-line);
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  min-height: 4.25rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
}

.brand__mark {
  width: 2.4rem;
  height: 2.4rem;
  flex: none;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--clr-primary-dark);
  line-height: 1.1;
}

.brand__tag {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--clr-accent-dark);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.site-nav a {
  position: relative;
  text-decoration: none;
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--clr-ink);
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-pill);
  transition: color var(--dur-fast) var(--ease-out), background-color var(--dur-fast) var(--ease-out);
}

.site-nav a:hover {
  background: var(--clr-primary-soft);
  color: var(--clr-primary-dark);
}

.site-nav a[aria-current='page'] {
  background: var(--clr-primary);
  color: #fff;
}

.site-nav .btn {
  margin-left: var(--space-2);
  padding: 0.55em 1.3em;
  font-size: var(--text-sm);
}

/* Mobile menu */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.75rem;
  height: 2.75rem;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 1.5rem;
  margin-inline: auto;
  background: var(--clr-ink);
  border-radius: 2px;
  transition: transform var(--dur-med) var(--ease-out), opacity var(--dur-fast);
}

.nav-toggle[aria-expanded='true'] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded='true'] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded='true'] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 47.9rem) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    inset: 100% 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--clr-bg);
    border-bottom: 1px solid var(--clr-line);
    padding: var(--space-3);
    box-shadow: var(--shadow-md);
    /* Collapsed by default */
    display: none;
  }

  .site-nav.is-open {
    display: flex;
    animation: nav-drop var(--dur-med) var(--ease-out);
  }

  .site-nav a {
    text-align: center;
    padding: 0.85rem;
  }

  .site-nav .btn {
    margin: var(--space-2) 0 0;
  }
}

@keyframes nav-drop {
  from {
    opacity: 0;
    transform: translateY(-0.5rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Footer ────────────────────────────────────────────────────────────── */
.site-footer {
  background: var(--clr-primary-dark);
  color: #dbe7e0;
  margin-top: var(--space-7);
}

.site-footer a {
  color: #fff;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.4fr;
  gap: var(--space-5);
  padding-block: var(--space-6) var(--space-5);
}

.site-footer h2 {
  font-size: var(--text-md);
  color: #fff;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-family: var(--font-body);
  font-weight: 800;
  margin-bottom: var(--space-3);
}

.site-footer ul {
  list-style: none;
  display: grid;
  gap: var(--space-2);
}

.site-footer__brand .brand__name {
  color: #fff;
}

.site-footer__brand p {
  margin-top: var(--space-3);
  max-width: 30rem;
  font-size: var(--text-sm);
}

.site-footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-block: var(--space-3);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  justify-content: space-between;
  font-size: var(--text-xs);
}

@media (max-width: 47.9rem) {
  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
}

/* ── Scroll-reveal animation (JS adds .is-visible) ─────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(1.25rem);
  transition:
    opacity var(--dur-slow) var(--ease-out),
    transform var(--dur-slow) var(--ease-out);
}

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

/* Stagger helper: children reveal one after another */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(1rem);
  transition:
    opacity var(--dur-slow) var(--ease-out),
    transform var(--dur-slow) var(--ease-out);
}

.reveal-stagger.is-visible > * {
  opacity: 1;
  transform: none;
}

.reveal-stagger.is-visible > *:nth-child(2) { transition-delay: 90ms; }
.reveal-stagger.is-visible > *:nth-child(3) { transition-delay: 180ms; }
.reveal-stagger.is-visible > *:nth-child(4) { transition-delay: 270ms; }
.reveal-stagger.is-visible > *:nth-child(5) { transition-delay: 360ms; }
.reveal-stagger.is-visible > *:nth-child(6) { transition-delay: 450ms; }

/* Respect users who prefer reduced motion */
@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;
  }

  .reveal,
  .reveal-stagger > * {
    opacity: 1;
    transform: none;
  }
}