/* ==========================================================================
   layout.css — Grid system, container, header, footer, page skeleton
   ========================================================================== */

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

.container--narrow { max-width: 860px; }
.container--wide { max-width: 1440px; }

main { display: block; }

section { position: relative; }

.section { padding-block: var(--space-24); }
.section--sm { padding-block: var(--space-16); }
.section--lg { padding-block: var(--space-32); }
.section--alt { background: var(--color-surface-alt); }
.section--sunken { background: var(--color-surface-sunken); }
.section--dark {
  background: var(--gradient-hero);
  color: var(--color-text-inverse);
}
.section--dark p { color: var(--color-text-inverse-muted); }
.section--dark h1, .section--dark h2, .section--dark h3, .section--dark h4 { color: #fff; }

/* ---- Grids (8pt system, responsive) ---- */
.grid { display: grid; gap: var(--space-8); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--auto { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 900;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: transparent;
  transition: height var(--dur-base) var(--ease-out),
              background-color var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out),
              backdrop-filter var(--dur-base) var(--ease-out);
}

.site-header.is-scrolled,
.site-header.is-solid {
  height: var(--header-h-scrolled);
  background: rgba(255, 255, 255, .78);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  backdrop-filter: blur(18px) saturate(160%);
  box-shadow: 0 1px 0 var(--color-border-soft), var(--shadow-sm);
}
:root[data-theme="dark"] .site-header.is-scrolled,
:root[data-theme="dark"] .site-header.is-solid {
  background: rgba(13, 22, 32, .78);
}

.site-header__inner {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--fs-md);
  color: var(--color-text-inverse);
  transition: color var(--dur-base) var(--ease-out);
  white-space: nowrap;
}
.is-scrolled .brand, .is-solid .brand { color: var(--color-primary-900); }
:root[data-theme="dark"] .is-scrolled .brand,
:root[data-theme="dark"] .is-solid .brand { color: #fff; }

.brand__mark {
  width: 42px; height: 42px;
  border-radius: var(--radius-md);
  background: var(--gradient-accent);
  display: grid; place-items: center;
  color: #fff;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__text small { font-family: var(--font-body); font-weight: 500; font-size: var(--fs-2xs); opacity: .7; letter-spacing: .02em; }

.main-nav { display: flex; align-items: center; gap: var(--space-2); }
.main-nav__list { display: flex; align-items: center; gap: var(--space-1); }
.main-nav__link {
  display: inline-flex; align-items: center; gap: 4px;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--fs-sm);
  color: var(--color-text-inverse-muted);
  transition: color var(--dur-fast) var(--ease-out), background-color var(--dur-fast) var(--ease-out);
}
.is-scrolled .main-nav__link, .is-solid .main-nav__link { color: var(--color-ink-700); }
.main-nav__link:hover, .main-nav__link[aria-current="page"] { color: var(--color-text-inverse); background: rgba(255,255,255,.12); }
.is-scrolled .main-nav__link:hover, .is-solid .main-nav__link:hover,
.is-scrolled .main-nav__link[aria-current="page"], .is-solid .main-nav__link[aria-current="page"] {
  color: var(--color-primary-700); background: var(--color-primary-100);
}
:root[data-theme="dark"] .is-scrolled .main-nav__link, :root[data-theme="dark"] .is-solid .main-nav__link { color: var(--color-ink-300); }

.header-actions { display: flex; align-items: center; gap: var(--space-3); }
.header-actions__divider { width: 1px; height: 24px; background: rgba(255,255,255,.22); }
.is-scrolled .header-actions__divider, .is-solid .header-actions__divider { background: var(--color-border); }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  align-items: center; justify-content: center;
  color: var(--color-text-inverse);
}
.is-scrolled .nav-toggle, .is-solid .nav-toggle { color: var(--color-primary-900); }
:root[data-theme="dark"] .is-scrolled .nav-toggle, :root[data-theme="dark"] .is-solid .nav-toggle { color: #fff; }

/* Mobile nav drawer */
.mobile-nav {
  position: fixed; inset: 0; z-index: 999;
  visibility: hidden; opacity: 0;
  transition: opacity var(--dur-base) var(--ease-out), visibility var(--dur-base);
}
.mobile-nav.is-open { visibility: visible; opacity: 1; }
.mobile-nav__backdrop {
  position: absolute; inset: 0;
  background: rgba(4, 18, 31, .55);
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
}
.mobile-nav__panel {
  position: absolute; top: 0; right: 0; bottom: 0;
  width: min(360px, 88vw);
  background: var(--color-surface);
  padding: var(--space-6) var(--space-6) var(--space-10);
  display: flex; flex-direction: column; gap: var(--space-8);
  transform: translateX(100%);
  transition: transform var(--dur-slow) var(--ease-out);
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
}
.mobile-nav.is-open .mobile-nav__panel { transform: translateX(0); }
.mobile-nav__head { display: flex; align-items: center; justify-content: space-between; }
.mobile-nav__close { width: 40px; height: 40px; border-radius: var(--radius-full); background: var(--color-ink-100); display: grid; place-items: center; }
.mobile-nav__list { display: flex; flex-direction: column; gap: var(--space-1); }
.mobile-nav__link {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-4) var(--space-2);
  font-weight: 700; font-size: var(--fs-md);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}
.mobile-nav__actions { display: flex; flex-direction: column; gap: var(--space-3); margin-top: auto; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--color-primary-950);
  color: rgba(255,255,255,.68);
  padding-block: var(--space-20) var(--space-8);
}
.site-footer a { color: rgba(255,255,255,.68); }
.site-footer a:hover { color: #fff; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr 1.1fr;
  gap: var(--space-10);
  padding-bottom: var(--space-16);
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-col__title { color: #fff; font-family: var(--font-heading); font-size: var(--fs-sm); font-weight: 800; text-transform: uppercase; letter-spacing: .06em; margin-bottom: var(--space-5); }
.footer-col__list { display: flex; flex-direction: column; gap: var(--space-3); font-size: var(--fs-sm); }
.footer-brand p { color: rgba(255,255,255,.6); margin-block: var(--space-4) var(--space-6); max-width: 32ch; }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: var(--space-4);
  padding-top: var(--space-8);
  font-size: var(--fs-xs);
}
.footer-bottom__links { display: flex; gap: var(--space-6); flex-wrap: wrap; }

@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ==========================================================================
   Breadcrumb
   ========================================================================== */
.breadcrumb {
  padding-block: var(--space-4);
}
.breadcrumb__list { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2); font-size: var(--fs-xs); color: var(--color-text-muted); }
.breadcrumb__list a { color: var(--color-text-muted); font-weight: 600; }
.breadcrumb__list a:hover { color: var(--color-primary-600); }
.breadcrumb__sep { opacity: .5; }
.breadcrumb__current { color: var(--color-text); font-weight: 600; }

/* ==========================================================================
   Page header (used on interior pages)
   ========================================================================== */
.page-hero {
  padding-block: calc(var(--header-h) + var(--space-16)) var(--space-20);
  background: var(--gradient-hero);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(60% 60% at 85% 0%, rgba(234,90,42,.22), transparent 70%);
  pointer-events: none;
}
.page-hero p { color: var(--color-text-inverse-muted); }
.page-hero h1, .page-hero h2, .page-hero h3 { color: #fff; }

/* ==========================================================================
   Sticky mobile action bar
   ========================================================================== */
.mobile-bar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 850;
  display: none;
  gap: 1px;
  background: var(--color-border);
  box-shadow: 0 -8px 24px rgba(11,17,22,.12);
  padding-bottom: env(safe-area-inset-bottom, 0);
}
.mobile-bar__btn {
  flex: 1;
  display: flex; align-items: center; justify-content: center; gap: var(--space-2);
  padding: var(--space-4) var(--space-2);
  font-weight: 700; font-size: var(--fs-sm);
  background: var(--color-surface);
  color: var(--color-primary-700);
}
.mobile-bar__btn--call { background: var(--color-primary-800); color: #fff; }
.mobile-bar__btn--whatsapp { background: #1ea952; color: #fff; }

@media (max-width: 860px) {
  .mobile-bar { display: flex; }
  body { padding-bottom: 64px; }
}

/* Skeleton */
.skeleton { animation: skeleton-pulse 1.4s ease-in-out infinite; background: var(--color-ink-100); border-radius: var(--radius-sm); }
@keyframes skeleton-pulse { 0%,100% { opacity: 1; } 50% { opacity: .5; } }