/* ============================================================
   ZEELCHEM™ Layout — Header, Footer, Navigation
   ============================================================ */

/* ── Site Header ── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  background: rgba(10, 22, 40, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-base);
  height: var(--header-height);
}

.site-header.scrolled {
  background: rgba(10, 22, 40, 0.95);
  height: var(--header-height-scrolled);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-xl);
}

/* Logo */
.logo-link {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-img {
  height: 48px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  filter: drop-shadow(0 2px 10px rgba(14, 165, 233, 0.35));
  transition: transform var(--transition-base), height var(--transition-base);
}

.site-header.scrolled .logo-img {
  height: 40px;
}

.logo-link .logo-text {
  display: none !important; /* Official logo already contains brand typography */
}

.footer-logo-img {
  height: 64px;
  width: auto;
  max-width: 280px;
  object-fit: contain;
  margin-bottom: var(--space-sm);
  background: #ffffff;
  padding: 6px 14px;
  border-radius: 10px;
  display: inline-block;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.35);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-company {
  font-family: var(--font-heading);
  font-size: var(--text-md);
  font-weight: var(--weight-extrabold);
  color: var(--color-text-primary);
  letter-spacing: var(--tracking-wide);
  line-height: 1;
}

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

.logo-brand {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-text-muted);
  letter-spacing: var(--tracking-wider);
}

/* Main Navigation */
.main-nav {
  display: flex;
  align-items: center;
}

@media (max-width: 1023px) {
  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(85vw, 360px);
    height: 100vh;
    background: var(--color-bg-secondary);
    border-left: 1px solid var(--color-border);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
    z-index: var(--z-overlay);
    transition: right var(--transition-base);
    padding: calc(var(--header-height) + var(--space-md)) var(--space-lg) var(--space-xl);
    overflow-y: auto;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-md);
  }

  .main-nav.open {
    right: 0;
  }

  .main-nav .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-xs);
    width: 100%;
  }

  .main-nav .nav-link {
    font-size: var(--text-base);
    padding: var(--space-sm) var(--space-md);
    width: 100%;
    justify-content: space-between;
  }

  .main-nav .has-dropdown .dropdown-menu {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    background: rgba(0, 0, 0, 0.2);
    border: none;
    box-shadow: none;
    padding-left: var(--space-md);
    margin-top: var(--space-2xs);
    display: none;
  }

  .main-nav .has-dropdown.active .dropdown-menu,
  .main-nav .has-dropdown:hover .dropdown-menu {
    display: block;
  }
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-2xs);
  list-style: none;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: var(--space-xs) var(--space-sm);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--color-text-primary);
  background: var(--color-surface-hover);
}

.nav-link.active {
  color: var(--color-accent);
  font-weight: var(--weight-semibold);
}

.nav-link svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast);
}

/* Dropdown */
.has-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + var(--space-xs));
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 240px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xs);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  list-style: none;
  z-index: var(--z-dropdown);
}

@media (min-width: 1024px) {
  .has-dropdown:hover .dropdown-menu,
  .has-dropdown:focus-within .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
  }

  .has-dropdown:hover .nav-link svg {
    transform: rotate(180deg);
  }
}

.dropdown-menu a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
}

/* Header CTA - Ultra Visible, Glowing & 100% Unclipped */
.header-cta {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 7px;
  background: linear-gradient(135deg, #0284c7 0%, #0ea5e9 50%, #00d4ff 100%);
  color: #ffffff !important;
  font-family: var(--font-body);
  font-weight: 700 !important;
  font-size: 13.5px !important;
  line-height: 1 !important;
  padding: 9px 18px !important;
  border-radius: 8px;
  text-decoration: none !important;
  box-shadow: 0 4px 15px rgba(14, 165, 233, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.3);
  transition: all 0.2s ease;
  white-space: nowrap !important;
  letter-spacing: 0.3px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  visibility: visible !important;
  opacity: 1 !important;
  flex-shrink: 0 !important;
}

.header-cta:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 25px rgba(14, 165, 233, 0.65), inset 0 1px 0 rgba(255, 255, 255, 0.5);
  background: linear-gradient(135deg, #0369a1 0%, #0284c7 50%, #38bdf8 100%);
}

.header-cta svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
}

.header-actions {
  display: flex !important;
  align-items: center !important;
  gap: 12px;
  flex-shrink: 0 !important;
}

@media (max-width: 1023px) {
  .header-cta {
    padding: 7px 14px !important;
    font-size: 12px !important;
    gap: 5px;
  }
}

@media (max-width: 480px) {
  .logo-img {
    height: 38px;
    max-width: 165px;
  }
  .header-cta {
    padding: 6px 11px !important;
    font-size: 11.5px !important;
    gap: 4px;
  }
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: none;
  background: none;
  cursor: pointer;
  padding: 0;
  z-index: calc(var(--z-overlay) + 1);
}

@media (max-width: 1023px) {
  .menu-toggle {
    display: flex;
  }
}

.hamburger {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  position: relative;
  transition: all var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  transition: all var(--transition-base);
}

.hamburger::before { top: -7px; }
.hamburger::after { bottom: -7px; }

.menu-toggle[aria-expanded="true"] .hamburger,
.menu-toggle.active .hamburger {
  background: transparent;
}

.menu-toggle[aria-expanded="true"] .hamburger::before,
.menu-toggle.active .hamburger::before {
  top: 0;
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .hamburger::after,
.menu-toggle.active .hamburger::after {
  bottom: 0;
  transform: rotate(-45deg);
}

/* Mobile Overlay */
.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: calc(var(--z-overlay) - 1);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.mobile-nav-overlay.active {
  opacity: 1;
  visibility: visible;
}
  display: block;
  padding: var(--space-xs) var(--space-md);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.mobile-dropdown a:hover {
  color: var(--color-accent);
  background: var(--color-surface);
}

.mobile-nav-cta {
  margin-top: auto;
  padding-top: var(--space-xl);
}

.mobile-nav-contact {
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.mobile-nav-contact a {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.mobile-nav-contact a svg {
  width: 18px;
  height: 18px;
  color: var(--color-accent);
}

/* ── Main Content Offset ── */
main {
  padding-top: var(--header-height);
}

/* ── Site Footer ── */
.site-footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-gold), var(--color-green), var(--color-primary));
  background-size: 200% 100%;
  animation: footer-gradient 8s linear infinite;
}

@keyframes footer-gradient {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

.footer-main {
  padding: var(--space-3xl) 0 var(--space-2xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr;
    gap: var(--space-xl);
  }
}

/* Footer Brand Column */
.footer-brand {
  max-width: 320px;
}

.footer-logo {
  height: 48px;
  width: auto;
  margin-bottom: var(--space-md);
}

.footer-brand p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-lg);
}

.social-bar {
  display: flex;
  gap: var(--space-sm);
}

.social-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  transition: all var(--transition-base);
}

.social-btn svg {
  width: 16px;
  height: 16px;
}

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

.social-btn.whatsapp:hover { background: #25d366; color: #fff; border-color: #25d366; }
.social-btn.linkedin:hover { background: #0a66c2; color: #fff; border-color: #0a66c2; }
.social-btn.instagram:hover { background: #e4405f; color: #fff; border-color: #e4405f; }
.social-btn.youtube:hover { background: #ff0000; color: #fff; border-color: #ff0000; }
.social-btn.facebook:hover { background: #1877f2; color: #fff; border-color: #1877f2; }

/* Footer Columns */
.footer-heading {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
}

.footer-links a:hover {
  color: var(--color-accent);
  transform: translateX(4px);
}

/* Footer Contact */
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: var(--text-sm);
}

.footer-contact-item svg {
  width: 18px;
  height: 18px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-contact-item a {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

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

.footer-contact-item address {
  font-style: normal;
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}

/* Footer Bottom */
.footer-bottom {
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-bottom p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  justify-content: center;
}

.footer-bottom-links a {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

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

/* ── Two Column Layout ── */
.layout-2col {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

@media (min-width: 768px) {
  .layout-2col {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
}

.layout-2col-reverse {
  direction: rtl;
}

.layout-2col-reverse > * {
  direction: ltr;
}

/* ── Sidebar Layout ── */
.layout-sidebar {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

@media (min-width: 1024px) {
  .layout-sidebar {
    grid-template-columns: 280px 1fr;
  }
}

.sidebar {
  position: sticky;
  top: calc(var(--header-height) + var(--space-lg));
  align-self: start;
}

@media (max-width: 1023px) {
  .sidebar {
    position: static;
  }
}