/* ==========================================================================
   SyncXpress — layout.css
   Page shell: container, header/navigation, footer, section rhythm, grids.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Container & sections
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--narrow { max-width: 820px; }

.section {
  padding-block: clamp(3.5rem, 7vw, 6.5rem);
}

.section--tight { padding-block: clamp(2.5rem, 4.5vw, 4rem); }

.section--alt {
  background: var(--bg-alt);
  border-block: 1px solid var(--border);
}

.section-head {
  max-width: 46rem;
  margin-bottom: var(--sp-8);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.section-head p {
  margin-top: var(--sp-4);
  font-size: var(--fs-xl);
  color: var(--text-mute);
}

/* --------------------------------------------------------------------------
   2. Grids
   -------------------------------------------------------------------------- */
.grid { display: grid; gap: var(--sp-5); }

.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 21rem), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 17.5rem), 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 14.5rem), 1fr)); }

.split {
  display: grid;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  grid-template-columns: 1fr;
}

@media (min-width: 62rem) {
  .split { grid-template-columns: 1fr 1fr; }
  .split--wide-left { grid-template-columns: 1.25fr 1fr; }
  .split--wide-right { grid-template-columns: 1fr 1.3fr; }
}

/* --------------------------------------------------------------------------
   3. Header & navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background-color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}

.site-header.is-stuck {
  background: rgba(255, 255, 255, 0.88);
  border-bottom-color: var(--border);
  box-shadow: 0 1px 20px -8px rgba(15, 32, 58, 0.28);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  backdrop-filter: blur(16px) saturate(150%);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-5);
  height: var(--header-h);
}

/* Brand */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text);
  flex: none;
}

.brand:hover { color: var(--text); }

.brand__mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  flex: none;
  transition: transform var(--dur) var(--ease), filter var(--dur) var(--ease);
}

.brand:hover .brand__mark {
  transform: translateY(-1px) scale(1.04);
  filter: drop-shadow(0 3px 10px rgba(13, 133, 133, 0.45));
}

.brand__name {
  font-family: var(--font-display);
  font-size: 1.16rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.brand__name span { color: var(--accent); }

/* Primary links */
.nav__links {
  display: none;
  align-items: center;
  gap: var(--sp-1);
}

.nav__link {
  position: relative;
  padding: 0.5rem 0.8rem;
  border-radius: var(--r-full);
  font-size: var(--fs-sm);
  font-weight: 550;
  color: var(--text-mute);
  white-space: nowrap;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.nav__link:hover {
  color: var(--text);
  background: var(--surface-sunken);
}

.nav__link[aria-current="page"] { color: var(--accent); }

.nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0.15rem;
  width: 14px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  transform: translateX(-50%);
}

.nav__actions {
  display: none;
  align-items: center;
  gap: var(--sp-3);
}

/* Mobile toggle */
.nav__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-md);
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

.nav__toggle .icon--close { display: none; }
.nav__toggle[aria-expanded="true"] .icon--menu { display: none; }
.nav__toggle[aria-expanded="true"] .icon--close { display: block; }

/* Mobile drawer */
.nav__drawer {
  display: none;
  border-top: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-md);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  max-height: calc(100vh - var(--header-h));
  overflow-y: auto;
}

.nav__drawer.is-open { display: block; }

.nav__drawer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
  padding-block: var(--sp-4) var(--sp-5);
}

.nav__drawer .nav__link {
  padding: 0.8rem 1rem;
  border-radius: var(--r-md);
  font-size: var(--fs-base);
}

.nav__drawer .nav__link[aria-current="page"] {
  background: var(--accent-soft);
}

.nav__drawer .nav__link[aria-current="page"]::after { display: none; }

.nav__drawer-actions {
  display: grid;
  gap: var(--sp-3);
  margin-top: var(--sp-4);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--border);
}

@media (min-width: 64rem) {
  :root { --header-h: 80px; }
  .nav__links,
  .nav__actions { display: flex; }
  .nav__toggle,
  .nav__drawer { display: none !important; }
}

/* Main offset for the fixed header (pages without a full-bleed hero) */
.page-top { padding-top: calc(var(--header-h) + clamp(2.5rem, 6vw, 5rem)); }

/* --------------------------------------------------------------------------
   4. Page header block
   -------------------------------------------------------------------------- */
.page-head {
  text-align: center;
  max-width: 52rem;
  margin-inline: auto;
  padding-bottom: clamp(2rem, 5vw, 3.5rem);
}

.page-head h1 { margin-top: var(--sp-5); }

.page-head p {
  margin-top: var(--sp-5);
  font-size: var(--fs-xl);
  color: var(--text-mute);
}

/* --------------------------------------------------------------------------
   5. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
  margin-top: var(--sp-6);
}

.footer-grid {
  display: grid;
  gap: var(--sp-8);
  padding-block: clamp(3rem, 6vw, 4.5rem) var(--sp-8);
  grid-template-columns: 1fr;
}

@media (min-width: 40rem) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 64rem) {
  .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1.2fr; }
}

.footer-about p {
  margin-top: var(--sp-4);
  max-width: 26rem;
  font-size: var(--fs-sm);
  color: var(--text-dim);
}

.footer-title {
  font-family: var(--font-display);
  font-size: var(--fs-xs);
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-faint);
}

.footer-list {
  display: grid;
  gap: var(--sp-3);
  margin-top: var(--sp-4);
  font-size: var(--fs-sm);
}

.footer-list a { color: var(--text-dim); }
.footer-list a:hover { color: var(--accent); }

.footer-contact {
  display: grid;
  gap: var(--sp-3);
  margin-top: var(--sp-4);
  font-size: var(--fs-sm);
  color: var(--text-dim);
}

.footer-contact li {
  display: grid;
  grid-template-columns: 1.15rem 1fr;
  gap: 0.65rem;
  align-items: start;
}

.footer-contact .icon {
  width: 1.05rem;
  height: 1.05rem;
  margin-top: 0.32rem;
  color: var(--accent);
}

.footer-contact a { color: var(--text-dim); }
.footer-contact a:hover { color: var(--accent); }

.social {
  display: flex;
  gap: var(--sp-3);
  margin-top: var(--sp-5);
}

.social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-md);
  background: var(--surface);
  color: var(--text-dim);
  transition: color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}

.social a:hover {
  color: var(--accent);
  border-color: var(--border-hi);
  transform: translateY(-2px);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3) var(--sp-5);
  align-items: center;
  justify-content: space-between;
  padding-block: var(--sp-5) var(--sp-6);
  border-top: 1px solid var(--border);
  font-size: var(--fs-xs);
  color: var(--text-faint);
}

.footer-bottom nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
}

.footer-bottom a { color: var(--text-faint); }
.footer-bottom a:hover { color: var(--accent); }