/* Layout, navigation, and footer */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body {
  position: relative;
  display: flex;
  min-height: 100vh;
  flex-direction: column;
  overflow-x: hidden;
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
}

main {
  flex: 1 0 auto;
}

.container {
  width: min(1440px, calc(100% - 120px));
  margin-inline: auto;
}

.container-narrow {
  max-width: var(--container-narrow);
}

.section-padding {
  padding-block: 140px;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: var(--z-header);
  width: 100%;
  padding-block: 28px;
  border-bottom: 1px solid transparent;
  background: transparent;
  transition: background-color var(--transition-normal), border-color var(--transition-normal), padding var(--transition-normal);
}

.site-header.scrolled {
  padding-block: 18px;
  border-color: var(--color-border);
  background: var(--color-bg-primary);
  box-shadow: none;
}

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

.site-logo,
.brand-badge {
  position: relative;
  z-index: calc(var(--z-modal) + 1);
  color: var(--color-text-light);
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: var(--fw-medium);
  letter-spacing: 0.02em;
  line-height: 1;
  text-decoration: none;
  text-transform: none;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

.site-logo {
  margin-inline-start: 14px;
  font-weight: var(--fw-semibold);
  transform-origin: left center;
  transition: color var(--transition-fast), opacity var(--transition-fast), transform var(--transition-fast);
}

.site-logo:hover,
.brand-badge:hover {
  color: var(--color-text-light);
  opacity: 0.78;
  transform: none;
}

@media (hover: hover) and (pointer: fine) {
  .site-logo:hover {
    opacity: 1;
    transform: scale(1.06);
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-logo {
    transition: none;
  }

  .site-logo:hover {
    transform: none;
  }
}

.site-header.scrolled .site-logo,
.site-header.scrolled .brand-badge {
  color: var(--color-text-primary);
}

.site-header.scrolled .site-logo:hover,
.site-header.scrolled .brand-badge:hover {
  color: var(--color-text-primary);
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 2.25rem;
  list-style: none;
}

.nav-desktop a {
  position: relative;
  display: inline-block;
  padding-block: 0.45rem;
  color: var(--color-text-light);
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: var(--fw-medium);
  letter-spacing: 0.16em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
  transition: opacity var(--transition-fast);
}

.site-header.scrolled .nav-desktop a {
  color: var(--color-text-primary);
}

.nav-desktop a::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  content: '';
  background: currentColor;
  opacity: 0;
  transform: scaleX(0);
  transform-origin: left;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.nav-desktop a:hover,
.nav-desktop .current-menu-item > a {
  color: inherit;
  opacity: 0.76;
}

.nav-desktop a:hover::after,
.nav-desktop .current-menu-item > a::after {
  opacity: 1;
  transform: scaleX(1);
}

.menu-toggle {
  z-index: calc(var(--z-modal) + 1);
  display: none;
  padding: 0.5rem;
  border: 0;
  background: transparent;
  color: var(--color-text-light);
  cursor: pointer;
}

.site-header.scrolled .menu-toggle {
  color: var(--color-text-primary);
}

.menu-hamburger {
  position: relative;
  display: flex;
  width: 28px;
  height: 14px;
  flex-direction: column;
  justify-content: space-between;
}

.menu-hamburger span {
  display: block;
  width: 100%;
  height: 1px;
  background: currentColor;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.menu-toggle.active .menu-hamburger span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.menu-toggle.active .menu-hamburger span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active .menu-hamburger span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.mobile-nav-drawer {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  padding: 4rem 2rem;
  flex-direction: column;
  justify-content: center;
  background: var(--color-bg-primary);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

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

.mobile-nav-list {
  display: flex;
  align-items: center;
  flex-direction: column;
  gap: 1.5rem;
  list-style: none;
}

.mobile-nav-list a {
  color: var(--color-text-primary);
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 8vw, 3.5rem);
  font-weight: var(--fw-light);
  letter-spacing: -0.02em;
  line-height: 1;
  text-decoration: none;
}

body.menu-open {
  overflow: hidden;
}

.mobile-nav-list a:focus-visible,
.menu-toggle:focus-visible {
  outline: 1px solid currentColor;
  outline-offset: 6px;
}

/* Footer */
.site-footer {
  margin-top: auto;
  padding: var(--space-xl) 0 var(--space-md);
  border-top: 1px solid var(--color-border-dark);
  background: var(--color-bg-dark);
  color: var(--color-text-light);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 4rem;
  margin-bottom: var(--space-lg);
}

.footer-brand .brand-title {
  margin-bottom: 1rem;
  color: var(--color-text-light);
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: var(--fw-regular);
  letter-spacing: -0.01em;
  line-height: 1;
}

.footer-brand p,
.footer-col p {
  max-width: 320px;
  color: var(--color-text-light-muted);
  font-size: 14px;
  line-height: 1.65;
}

.footer-title {
  margin-bottom: 1.35rem;
  color: var(--color-text-light);
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: var(--fw-medium);
  letter-spacing: 0.16em;
  line-height: 1.4;
  text-transform: uppercase;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  list-style: none;
}

.footer-links a {
  color: var(--color-text-light-muted);
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: var(--fw-medium);
  letter-spacing: 0.12em;
  line-height: 1.6;
  text-decoration: none;
  text-transform: uppercase;
}

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

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

.footer-bottom p {
  margin: 0;
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: var(--fw-regular);
  letter-spacing: 0.12em;
  line-height: 1.5;
  text-transform: uppercase;
}

@media (max-width: 1200px) {
  .container {
    width: min(100%, calc(100% - 80px));
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 4rem;
  }
}

@media (max-width: 992px) {
  .nav-desktop,
  .header-cta {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .section-padding {
    padding-block: 100px;
  }
}

@media (max-width: 767px) {
  :root {
    --header-height: 72px;
  }

  .container {
    width: min(100%, calc(100% - 40px));
  }

  .site-header {
    padding-block: 20px;
  }

  .site-header.scrolled {
    padding-block: 15px;
  }

  .site-logo,
  .brand-badge {
    font-size: 24px;
  }

  .section-padding {
    padding-block: 72px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.75rem;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.8rem;
  }
}