.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.container--narrow {
  max-width: 860px;
}

.container--wide {
  max-width: 1440px;
}

.section {
  padding-block: var(--space-9);
}

@media (min-width: 768px) {
  .section {
    padding-block: var(--space-11);
  }
}

.section--tight {
  padding-block: var(--space-7);
}

.section--alt {
  background: var(--color-bg-elevated);
  border-block: 1px solid var(--color-border);
}

.section-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-7);
}

.section-header__eyebrow {
  display: inline-block;
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.section-header__title {
  margin: 0;
}

.section-header__desc {
  margin-top: var(--space-2);
  max-width: 60ch;
  color: var(--color-text-muted);
}

.grid-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 580px) {
  .grid-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .grid-cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1200px) {
  .grid-cards--4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

.flex-row {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* ------------------------------------------------------------------ */
/* Header                                                              */
/* ------------------------------------------------------------------ */

.header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  width: 100%;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: rgba(11, 11, 13, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: background-color var(--duration-base) var(--ease-standard),
    border-color var(--duration-base) var(--ease-standard),
    box-shadow var(--duration-base) var(--ease-standard);
}

.header--scrolled {
  background: rgba(11, 11, 13, 0.94);
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.header__logo img {
  height: 34px;
  width: auto;
}

.header__logo-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-md);
  letter-spacing: 0.03em;
  color: var(--color-white);
  white-space: nowrap;
}

.header__logo-text strong {
  color: var(--color-primary);
  font-weight: 800;
}

.header__nav {
  display: none;
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.header__nav-link {
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-text);
  padding-block: var(--space-2);
  position: relative;
}

.header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-fast) var(--ease-standard);
}

.header__nav-link:hover,
.header__nav-link[aria-current="page"] {
  color: var(--color-white);
}

.header__nav-link:hover::after,
.header__nav-link[aria-current="page"]::after {
  transform: scaleX(1);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-left: auto;
}

.header__social {
  display: none;
  align-items: center;
  gap: var(--space-3);
}

.header__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-round);
  border: 1px solid var(--color-border);
  color: var(--color-metal);
  transition: border-color var(--duration-fast) var(--ease-standard),
    color var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

.header__social-link:hover {
  color: var(--color-white);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.header__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
}

.header__hamburger-bar {
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: var(--radius-pill);
  transition: transform var(--duration-base) var(--ease-standard),
    opacity var(--duration-base) var(--ease-standard);
}

@media (min-width: 900px) {
  .header__nav {
    display: block;
  }

  .header__social {
    display: flex;
  }

  .header__hamburger {
    display: none;
  }
}

/* ------------------------------------------------------------------ */
/* Mobile menu (full-screen overlay)                                   */
/* ------------------------------------------------------------------ */

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-mobile-menu);
  display: flex;
  flex-direction: column;
  background: #0B0B0D;
  background-image: var(--gradient-overlay-radial);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px);
  transition: opacity var(--duration-base) var(--ease-standard),
    visibility 0s linear var(--duration-base),
    transform var(--duration-base) var(--ease-standard);
  overflow-y: auto;
}

.mobile-menu--open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity var(--duration-base) var(--ease-standard),
    visibility 0s linear 0s,
    transform var(--duration-base) var(--ease-standard);
}

.mobile-menu__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  padding-inline: var(--container-padding);
  border-bottom: 1px solid var(--color-border);
}

.mobile-menu__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-round);
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.mobile-menu__body {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-8) var(--container-padding);
  gap: var(--space-7);
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mobile-menu__link {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  font-weight: 800;
  color: var(--color-text);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

.mobile-menu__link:hover,
.mobile-menu__link[aria-current="page"] {
  color: var(--color-primary);
}

.mobile-menu__social {
  display: flex;
  gap: var(--space-4);
}

@media (min-width: 900px) {
  .mobile-menu {
    display: none;
  }
}

/* ------------------------------------------------------------------ */
/* Footer                                                               */
/* ------------------------------------------------------------------ */

.footer {
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-10) var(--space-6);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer__logo img {
  height: 44px;
  width: auto;
}

.footer__tagline {
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  max-width: 36ch;
}

.footer__col-title {
  font-size: var(--fs-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-metal);
  margin-bottom: var(--space-4);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__links a {
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
}

.footer__links a:hover {
  color: var(--color-white);
}

.footer__social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-2);
}

.footer__bottom {
  margin-top: var(--space-9);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

@media (min-width: 580px) {
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__brand {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1024px) {
  .footer__grid {
    grid-template-columns: 1.5fr repeat(4, 1fr);
  }

  .footer__brand {
    grid-column: auto;
  }
}