/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  height: 64px;
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 20px;
  color: var(--text-primary);
  text-decoration: none;
}

.logo-badge {
  background: var(--brand);
  color: #ffffff;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
}

.nav-desktop {
  display: none;
  align-items: center;
  gap: 24px;
}

@media (min-width: 768px) {
  .nav-desktop {
    display: flex;
  }
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

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

/* Nav Item Dropdown & Mega Menu */
.nav-item-dropdown {
  position: relative;
}

.nav-mega-menu {
  position: absolute;
  top: 100%;
  left: -40px;
  width: 640px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  box-shadow: var(--shadow-card);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  z-index: 1050;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s cubic-bezier(0.16, 1, 0.3, 1), transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.2s;
  pointer-events: none;
}

.nav-item-dropdown:hover .nav-mega-menu,
.nav-item-dropdown:focus-within .nav-mega-menu,
.nav-item-dropdown.is-open .nav-mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.nav-mega-item {
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: background 0.15s ease, color 0.15s ease;
}

.nav-mega-item:hover {
  background: var(--bg-tint);
  color: var(--brand);
}

.theme-toggle {
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
}

.theme-toggle:hover {
  background: var(--bg-subtle);
}

.mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

@media (min-width: 768px) {
  .mobile-menu-btn {
    display: none;
  }
}

/* Mobile Drawer */
.mobile-drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(11, 16, 32, 0.5);
  z-index: 1100;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.mobile-drawer-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 300px;
  max-width: 85vw;
  background: var(--surface);
  z-index: 1200;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  overflow-y: auto;
  box-shadow: var(--shadow-card);
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-drawer.is-open {
  transform: translateX(0);
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  padding-bottom: 16px;
}

.mobile-drawer-nav {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mobile-drawer-link {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  padding: 8px 0;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--bg-subtle) 0%, var(--bg-tint) 100%);
  padding: 48px 0;
  border-bottom: 1px solid var(--border);
  text-align: center;
}

@media (min-width: 768px) {
  .hero {
    padding: 64px 0;
  }
}

.hero-subtitle {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto 32px auto;
}

/* Search Box */
.search-container {
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}

.search-input {
  width: 100%;
  height: 52px;
  padding: 0 20px 0 48px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text-primary);
  font-size: 16px;
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-results {
  position: absolute;
  top: 58px;
  left: 0;
  right: 0;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  max-height: 360px;
  overflow-y: auto;
  z-index: 100;
  text-align: left;
}

.search-item {
  display: block;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
}

.search-item:last-child {
  border-bottom: none;
}

.search-item:hover {
  background: var(--bg-subtle);
}

.search-item-title {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 15px;
}

.search-item-meta {
  font-size: 13px;
  color: var(--text-muted);
}

/* Tool Grid & Tool Cards */
.tool-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 24px;
}

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

@media (min-width: 1024px) {
  .tool-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}

.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-decoration: none;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.tool-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.tool-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 12px;
}

.tool-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.tool-card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
}

.tool-card-pillar {
  font-size: 12px;
  font-weight: 600;
  color: var(--brand);
  background: var(--bg-tint);
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

/* Pillar & Cluster Grid */
.pillar-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

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

@media (min-width: 1024px) {
  .pillar-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }
}

.pillar-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  text-decoration: none;
  transition: border-color 0.15s ease;
}

.pillar-card:hover {
  border-color: var(--accent);
}

.pillar-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.pillar-card-count {
  font-size: 13px;
  color: var(--text-muted);
}

/* FAQ List Component */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 24px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
}

.faq-question {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.faq-answer {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Breadcrumbs */
.breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.breadcrumbs a {
  color: var(--text-secondary);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--brand);
  text-decoration: underline;
}

.breadcrumbs-separator {
  color: var(--text-muted);
}

/* Footer */
.site-footer {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
  padding: 48px 0 24px 0;
  margin-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-bottom: 48px;
}

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

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

.footer-brand {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 320px;
}

.footer-heading {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 14px;
  text-decoration: none;
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  text-align: center;
  font-size: 14px;
  color: var(--text-muted);
}

@media (min-width: 640px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: center;
    text-align: center;
  }
}

/* CTA Band */
.cta-band {
  background: var(--brand);
  color: #ffffff;
  padding: 48px 0;
  text-align: center;
  border-radius: var(--radius-lg);
  margin: 48px 0;
}

.cta-band h2 {
  color: #ffffff;
}

.cta-band p {
  color: var(--bg-tint);
  max-width: 600px;
  margin: 0 auto 24px auto;
}

.btn-cta {
  display: inline-block;
  background: var(--accent-button);
  color: #ffffff;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  text-decoration: none;
  font-size: 16px;
}

.btn-cta:hover {
  background: #2D4BC9;
  color: #ffffff;
}