/* ==========================================================================
   LAYOUT.CSS — Grid system, header, footer, section scaffolding
   ========================================================================== */

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

.container--narrow { max-width: 880px; }
.container--wide { max-width: 1400px; }

section {
  position: relative;
}

.section {
  padding-block: var(--space-11);
}

.section--tight { padding-block: var(--space-9); }
.section--alt { background: var(--surface-alt); }

.section-head {
  max-width: 720px;
  margin-bottom: var(--space-8);
}

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

.section-head h2 { margin-block: var(--space-3) var(--space-4); }

/* ---- Grid utilities ---- */
.grid {
  display: grid;
  gap: var(--space-6);
}

.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--services { grid-template-columns: repeat(auto-fill, minmax(min(280px, 100%), 1fr)); }
.grid--blog { grid-template-columns: repeat(auto-fill, minmax(min(320px, 100%), 1fr)); }

.flex { display: flex; }
.flex--center { align-items: center; justify-content: center; }
.flex--between { align-items: center; justify-content: space-between; }
.flex--gap-2 { gap: var(--space-2); }
.flex--gap-3 { gap: var(--space-3); }
.flex--gap-4 { gap: var(--space-4); }
.flex--wrap { flex-wrap: wrap; }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: transparent;
  transition: background-color var(--duration-base) var(--ease-standard),
    box-shadow var(--duration-base) var(--ease-standard),
    backdrop-filter var(--duration-base) var(--ease-standard),
    height var(--duration-base) var(--ease-standard);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}

.site-header.is-scrolled {
  height: 72px;
  background: rgba(7, 18, 35, 0.72);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  box-shadow: var(--shadow-md);
}

.site-header--solid {
  background: rgba(7, 18, 35, 0.92);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--fs-md);
  color: #fff;
}

.header-brand__mark {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
  box-shadow: var(--shadow-glow-accent);
}

.header-brand__text small {
  display: block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--fs-xs);
  color: rgba(255, 255, 255, 0.65);
  letter-spacing: 0.02em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.main-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.main-nav__link {
  position: relative;
  font-weight: 600;
  font-size: var(--fs-sm);
  color: rgba(255, 255, 255, 0.86);
  padding-block: var(--space-2);
  transition: color var(--duration-fast) var(--ease-standard);
}

.main-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--color-cyan-400);
  transition: width var(--duration-base) var(--ease-standard);
}

.main-nav__link:hover,
.main-nav__link[aria-current="page"] {
  color: #fff;
}

.main-nav__link:hover::after,
.main-nav__link[aria-current="page"]::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

/* ---- Mobile drawer ---- */
.mobile-drawer {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-header) + 5);
  visibility: hidden;
  pointer-events: none;
}

.mobile-drawer__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(4, 16, 31, 0.6);
  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-standard);
}

.mobile-drawer__panel {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(340px, 86vw);
  background: var(--color-navy-950);
  padding: var(--space-6) var(--space-5);
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-out-back);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  overflow-y: auto;
}

.mobile-drawer.is-open {
  visibility: visible;
  pointer-events: auto;
}

.mobile-drawer.is-open .mobile-drawer__backdrop { opacity: 1; }
.mobile-drawer.is-open .mobile-drawer__panel { transform: translateX(0); }

.mobile-drawer__close {
  align-self: flex-end;
  width: 40px;
  height: 40px;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.08);
}

.mobile-drawer__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.mobile-drawer__list a {
  display: block;
  padding: var(--space-3) var(--space-2);
  font-weight: 600;
  font-size: var(--fs-md);
  color: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.mobile-drawer__cta {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: auto;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--color-navy-950);
  color: rgba(255, 255, 255, 0.72);
  padding-top: var(--space-11);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr 1.1fr;
  gap: var(--space-7);
  padding-bottom: var(--space-9);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-col h4 {
  color: #fff;
  font-size: var(--fs-sm);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-col a {
  font-size: var(--fs-sm);
  color: rgba(255, 255, 255, 0.65);
  transition: color var(--duration-fast) var(--ease-standard);
}

.footer-col a:hover { color: #fff; }

.footer-brand p {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--fs-sm);
  margin-block: var(--space-4);
  max-width: 320px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding-block: var(--space-5);
  font-size: var(--fs-xs);
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom__links {
  display: flex;
  gap: var(--space-5);
}

/* ==========================================================================
   Mobile sticky action bar
   ========================================================================== */
.mobile-action-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: var(--z-mobile-bar);
  display: none;
  gap: 1px;
  background: var(--border-subtle);
  box-shadow: 0 -8px 24px rgba(10, 37, 64, 0.14);
  padding-bottom: env(safe-area-inset-bottom);
}

.mobile-action-bar a {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding-block: var(--space-4);
  font-weight: 700;
  font-size: var(--fs-sm);
  background: var(--surface-card);
  color: var(--text-primary);
}

.mobile-action-bar a.is-call {
  background: var(--brand-primary);
  color: #fff;
}

.mobile-action-bar a.is-whatsapp {
  background: var(--color-whatsapp);
  color: #fff;
}

/* ==========================================================================
   Breadcrumb
   ========================================================================== */
.breadcrumb {
  padding-top: calc(var(--header-height) + var(--space-5));
  padding-bottom: var(--space-4);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--brand-accent); }
.breadcrumb li[aria-current="page"] { color: var(--text-secondary); font-weight: 600; }

/* ==========================================================================
   Page hero (interior pages)
   ========================================================================== */
.page-hero {
  background: var(--gradient-hero);
  padding-top: calc(var(--header-height) + var(--space-8));
  padding-bottom: var(--space-9);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.page-hero .container { position: relative; z-index: 2; }

.page-hero__desc {
  max-width: 680px;
  color: rgba(255, 255, 255, 0.78);
  font-size: var(--fs-md);
  margin-top: var(--space-4);
}