/* Layout primitives */
main,
.page-main {
  display: block;
}

.page-main {
  display: flex;
  flex-direction: column;
  gap: var(--space-4xl);
  padding-bottom: var(--space-4xl);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--header-z);
  backdrop-filter: blur(16px);
  background-color: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid var(--color-border);
  transition: transform var(--transition-normal), background-color var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

body[data-header-scrolled="true"] .site-header {
  box-shadow: var(--shadow-sm);
  background-color: rgba(255, 255, 255, 0.95);
}

body[data-theme="dark"] .site-header {
  background-color: rgba(15, 18, 27, 0.86);
  border-color: rgba(124, 150, 196, 0.16);
}

body[data-theme="dark"][data-header-scrolled="true"] .site-header {
  background-color: rgba(15, 18, 27, 0.92);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.topbar {
  border-bottom: 1px solid var(--color-border);
  max-height: 200px;
  transition: border-color var(--transition-fast), opacity var(--transition-fast), max-height var(--transition-normal), padding var(--transition-fast);
}

.topbar__row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-sm) 0;
  font-size: var(--font-size-body-sm);
  color: var(--color-text-muted);
}

body[data-header-scrolled="true"] .topbar {
  max-height: 0;
  padding: 0;
  opacity: 0;
  border-bottom-color: transparent;
  pointer-events: none;
  overflow: hidden;
}

.topbar__info {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
}

.topbar__badge {
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  background-color: rgba(212, 175, 55, 0.12);
  color: var(--color-gold);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.topbar__contacts {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.topbar__link {
  color: inherit;
  transition: color var(--transition-fast);
}

.topbar__link:hover {
  color: var(--color-primary);
}

.theme-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.theme-toggle:hover {
  background-color: var(--color-surface);
}

.theme-toggle__icon {
  position: absolute;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.theme-toggle__icon--moon {
  opacity: 0;
  transform: scale(0.7);
}

body[data-theme="dark"] .theme-toggle__icon--sun {
  opacity: 0;
  transform: scale(0.7);
}

body[data-theme="dark"] .theme-toggle__icon--moon {
  opacity: 1;
  transform: scale(1);
}

.nav-shell {
  position: relative;
}

.nav-shell__row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-xl);
  padding: calc(var(--space-md) - 4px) 0;
}

body[data-header-scrolled="true"] .nav-shell__row {
  padding: var(--space-xs) 0;
}

body[data-header-scrolled="true"] .site-logo__wordmark {
  font-size: 22px;
}

body[data-header-scrolled="true"] .site-logo__tagline {
  letter-spacing: 0.26em;
}

.nav-toggle {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  align-items: center;
  justify-content: center;
  padding: 12px;
  flex-direction: column;
  gap: 6px;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.nav-toggle span {
  width: 100%;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 1px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: var(--color-text);
}

.site-logo__wordmark {
  font-family: var(--font-primary);
  font-size: 24px;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: font-size var(--transition-fast);
}

.site-logo__tagline {
  font-family: var(--font-accent);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--color-text-muted);
  transition: letter-spacing var(--transition-fast);
}

.site-menu {
  display: block;
}

.site-menu__list {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.site-menu__item {
  position: static;
}

.site-menu__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-accent);
  font-size: var(--font-size-body);
  font-weight: 600;
  color: var(--color-text);
  padding: 10px;
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.site-menu__link:hover,
.site-menu__link:focus-visible {
  color: var(--color-primary);
  background-color: rgba(10, 36, 99, 0.06);
}

.has-mega[data-open="true"] > .site-menu__link {
  color: var(--color-primary);
}

.mega-panel {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  width: min(960px, calc(100vw - 48px));
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-xl);
  padding: var(--space-xl);
  background-color: var(--color-background);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

body[data-theme="dark"] .mega-panel {
  background-color: var(--color-surface);
}

.has-mega[data-open="true"] > .mega-panel {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.mega-panel__column {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.mega-panel__title {
  font-size: var(--font-size-body-sm);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.mega-panel__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.mega-panel__links a {
  font-family: var(--font-secondary);
  font-size: var(--font-size-body);
  color: var(--color-text-soft);
  padding: 6px 0;
  transition: color var(--transition-fast);
}

.mega-panel__links a:hover {
  color: var(--color-primary);
}

.mega-panel__feature {
  display: flex;
  align-items: stretch;
  grid-column: span 2;
}

.mega-panel__feature-inner {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  background-color: var(--color-background);
  border-radius: var(--radius-xl);
  height: 100%;
}

.mega-panel__eyebrow {
  font-family: var(--font-accent);
  font-size: var(--font-size-body-sm);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
}

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

.nav-shell__actions .theme-toggle {
  display: none;
}

.nav-shell__actions .theme-toggle--compact {
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  width: 40px;
  height: 40px;
}

body[data-theme="dark"] .nav-shell__actions .theme-toggle--compact {
  border-color: rgba(124, 150, 196, 0.28);
  background-color: var(--color-surface);
}

.nav-action {
  position: relative;
}

/* Mobile drawer */
.mobile-drawer {
  position: fixed;
  inset: 0 0 0 auto;
  width: min(100%, 360px);
  background-color: var(--color-background);
  transform: translateX(100%);
  transition: transform var(--transition-normal) ease;
  z-index: var(--drawer-z);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.mobile-drawer[aria-hidden="false"] {
  transform: translateX(0);
}

.mobile-drawer__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg) var(--space-lg) var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.mobile-drawer__body {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.mobile-search {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-sm);
}

.mobile-search__submit {
  padding: 0 var(--space-md);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: #fff;
  font-weight: 600;
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  font-size: var(--font-size-body-lg);
}

.mobile-nav a {
  color: var(--color-text);
}

.mobile-nav details {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: var(--space-md);
}

.mobile-nav summary {
  cursor: pointer;
  font-weight: 600;
}

.mobile-nav__group {
  margin-top: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.mobile-nav__group h4 {
  margin: 0;
  font-size: var(--font-size-body-sm);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
}

.mobile-drawer__services {
  padding: var(--space-lg);
  border-radius: var(--radius-xl);
  background-color: var(--color-surface);
  box-shadow: var(--shadow-xs);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.mobile-drawer__footer {
  padding: var(--space-lg);
  border-top: 1px solid var(--color-border);
  display: grid;
  gap: var(--space-md);
  font-size: var(--font-size-body-sm);
  background-color: var(--color-surface);
}

.mobile-drawer__label {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
  display: block;
  margin-bottom: var(--space-xs);
}

.drawer-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
  z-index: var(--backdrop-z);
}

.drawer-backdrop[data-active="true"] {
  opacity: 1;
  pointer-events: auto;
}

/* Search overlay */
.search-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-normal);
  z-index: var(--overlay-z);
}

.search-overlay[data-open="true"] {
  opacity: 1;
  pointer-events: auto;
}

.search-overlay__backdrop {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
}

.search-overlay__panel {
  position: relative;
  width: min(90vw, 720px);
  background-color: var(--color-background);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  max-height: 90vh;
  overflow: hidden;
}

.search-overlay__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.search-overlay__form {
  display: flex;
  gap: var(--space-sm);
}

.search-overlay__field {
  position: relative;
  flex: 1;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0 var(--space-md);
  background-color: var(--color-surface);
}

.search-overlay__field input {
  flex: 1;
  padding: 16px 0;
  border: none;
  background: none;
  color: var(--color-text);
  font-size: var(--font-size-body-lg);
}

.search-overlay__field input:focus {
  outline: none;
}

.search-overlay__suggestions {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.search-overlay__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.search-overlay__tags button {
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.search-overlay__tags button:hover {
  background-color: var(--color-primary);
  color: #fff;
}

/* Footer */
.site-footer {
  background-color: var(--color-ink);
  color: rgba(255, 255, 255, 0.86);
  padding: var(--space-4xl) 0 var(--space-2xl);
}

.site-footer__grid {
  display: grid;
  gap: var(--space-2xl);
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.site-footer__brand p {
  margin-top: var(--space-md);
  max-width: 320px;
  color: rgba(255, 255, 255, 0.72);
}

.site-footer__contact {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-top: var(--space-lg);
  font-weight: 600;
}

.site-footer__col h3 {
  font-family: var(--font-accent);
  font-size: var(--font-size-body-sm);
  text-transform: uppercase;
  letter-spacing: 0.25em;
  margin-bottom: var(--space-md);
}

.site-footer__col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.site-footer__col a {
  color: rgba(255, 255, 255, 0.76);
}

.site-footer__bottom {
  margin-top: var(--space-3xl);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  font-size: var(--font-size-body-sm);
}

.site-footer__links {
  display: flex;
  gap: var(--space-md);
}

/* Chat bot */
.chat-bot {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 250;
}

.chat-bot__toggle {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: #fff;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.chat-bot__window {
  position: absolute;
  bottom: 72px;
  right: 0;
  width: 360px;
  background-color: var(--color-background);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  display: none;
  flex-direction: column;
  overflow: hidden;
}

.chat-bot[data-open="true"] .chat-bot__window {
  display: flex;
}

.chat-bot__header {
  padding: var(--space-md) var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  border-bottom: 1px solid var(--color-border);
  gap: var(--space-md);
}

.chat-bot__header h3 {
  font-size: var(--font-size-body-lg);
}

.chat-bot__header p {
  font-size: var(--font-size-body-sm);
  color: var(--color-text-muted);
}

.chat-bot__messages {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-height: 280px;
  overflow-y: auto;
}

.chat-bot__message {
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  max-width: 80%;
  font-size: var(--font-size-body-sm);
  line-height: var(--line-height-relaxed);
}

.chat-bot__message--bot {
  background-color: var(--color-surface);
  color: var(--color-text);
}

.chat-bot__message:not(.chat-bot__message--bot) {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: #fff;
  margin-left: auto;
}

.chat-bot__input {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.chat-bot__input input {
  flex: 1;
  border: none;
  background: none;
  font-size: var(--font-size-body);
  color: var(--color-text);
}

.chat-bot__input input:focus {
  outline: none;
}

.chat-bot__input button {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Responsive */
@media (max-width: 1200px) {
  .mega-panel {
    grid-template-columns: repeat(2, minmax(160px, 1fr));
    width: min(720px, calc(100vw - 48px));
  }

  .mega-panel__feature {
    grid-column: span 2;
  }
}

@media (max-width: 992px) {
  .topbar__row {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-menu {
    display: none;
  }

  .mega-panel {
    display: none;
  }

  .nav-shell__row {
    grid-template-columns: auto 1fr auto;
    gap: var(--space-lg);
  }

  .nav-shell__actions {
    display: grid;
    grid-template-columns: repeat(4, auto);
    gap: var(--space-xs);
  }

  .nav-shell__actions .theme-toggle {
    display: inline-flex;
    justify-content: center;
    align-items: center;
  }

  .topbar__contacts .theme-toggle {
    display: none;
  }
}

@media (max-width: 768px) {
.mega-panel__feature {
    grid-column: span 1;
  }
}

@media (max-width: 768px) {
.site-header {
    border-bottom: none;
  }

  .topbar {
    display: none;
  }

  .page-main {
    gap: var(--space-3xl);
  }

  .nav-shell__actions {
    grid-template-columns: repeat(4, auto);
  }

  .nav-shell__actions .theme-toggle {
    width: 40px;
    height: 40px;
  }

  .topbar__contacts .theme-toggle {
    display: none;
  }

  .search-overlay__panel {
    width: min(96vw, 520px);
    padding: var(--space-lg);
  }

  .search-overlay__form {
    flex-direction: column;
  }

  .search-overlay__field {
    width: 100%;
  }

  .search-overlay__suggestions {
    gap: var(--space-xs);
  }

  .search-overlay__tags {
    gap: var(--space-xs);
  }

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-footer__links {
    flex-direction: column;
    align-items: flex-start;
  }

  .chat-bot__window {
    width: calc(100vw - 32px);
    right: -12px;
  }
}

@media (max-width: 576px) {
  .nav-shell__row {
    grid-template-columns: auto 1fr auto;
    gap: var(--space-lg);
  }

  .nav-shell__actions {
    gap: var(--space-xs);
  }

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