/**
 * Layout CSS - Header, Footer, Containers, Grid & Flex Layouts
 */
.site-container {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--surface-color);
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 1.5rem;
}

/* Brand Logo */
.site-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text-color);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  white-space: nowrap;
}

.brand-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  flex-shrink: 0;
}

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

.brand-accent {
  color: var(--primary-color);
}

/* Desktop Navigation */
.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.85rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--primary-color);
  background-color: var(--primary-light);
}

/* Dropdown / Submenu */
.nav-item-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.5rem;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  z-index: 1010;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.2rem;
}

.nav-item-dropdown:hover .dropdown-menu,
.nav-item-dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.88rem;
  color: var(--text-color);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.dropdown-item:hover {
  background-color: var(--surface-secondary);
  color: var(--primary-color);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  background-color: var(--surface-color);
  transition: all var(--transition-fast);
}

.action-btn:hover {
  color: var(--primary-color);
  border-color: var(--border-focus);
  background-color: var(--primary-light);
}

.menu-toggle {
  display: none;
}

/* Main Content Area */
.main-content {
  min-height: calc(100vh - 68px - 320px);
  padding-bottom: 4rem;
}

/* Layout Grid */
.layout-with-sidebar {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 2.5rem;
  align-items: start;
}

.sidebar {
  position: sticky;
  top: 90px;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Hero Section */
.hero-section {
  padding: 3.5rem 0 2.5rem 0;
  border-bottom: 1px solid var(--border-color);
  background: radial-gradient(circle at top right, var(--primary-light) 0%, transparent 45%);
}

.hero-content {
  max-width: 820px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background-color: var(--primary-light);
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.hero-title {
  font-size: 2.75rem;
  line-height: 1.15;
  margin-bottom: 1rem;
  color: var(--text-color);
}

.hero-lead {
  font-size: 1.2rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.75rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

/* Section Header */
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 1.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--border-color);
}

.section-title {
  font-size: 1.65rem;
  color: var(--text-color);
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--muted-text);
  margin-top: 0.25rem;
}

.section-view-all {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary-color);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  white-space: nowrap;
}

.section-view-all:hover {
  text-decoration: underline;
}

/* Footer */
.site-footer {
  background-color: var(--surface-color);
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem 0;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  margin-top: 0.75rem;
  font-size: 0.92rem;
  color: var(--muted-text);
  max-width: 320px;
}

.footer-heading {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-color);
  margin-bottom: 1.15rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.88rem;
  color: var(--muted-text);
  gap: 1rem;
}

.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.footer-legal-links a:hover {
  color: var(--text-color);
}