.container { width: 100%; max-width: calc(var(--container) + var(--gutter) * 2); margin-inline: auto; padding-inline: var(--gutter); }

/* Header */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100; height: var(--header-h);
  color: var(--color-text-light);
  transition: background-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.site-header.is-scrolled {
  background: rgba(7, 17, 31, 0.92);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  box-shadow: 0 1px 0 var(--color-border-dark);
}
.site-header .container { height: 100%; display: flex; align-items: center; gap: 32px; }
.brand { font-weight: 700; font-size: 1.2rem; letter-spacing: -0.02em; text-decoration: none; margin-right: auto; }
.nav-panel { display: flex; align-items: center; gap: 24px; }
.nav-list { display: flex; gap: 4px; padding: 0; margin: 0; list-style: none; }
.nav-list a { display: block; padding: 8px 14px; border-radius: var(--radius-pill); text-decoration: none; font-size: 0.95rem; color: var(--color-text-light-muted); transition: color 0.15s, background-color 0.15s; }
.nav-list a:hover, .nav-list a[aria-current="page"] { color: #fff; background: rgba(255, 255, 255, 0.08); }
.nav-social { display: flex; gap: 2px; padding: 0; margin: 0; list-style: none; }
.nav-social a { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; color: var(--color-text-light-muted); transition: color 0.15s, background-color 0.15s; }
.nav-social a:hover { color: #fff; background: rgba(255, 255, 255, 0.08); }
.nav-toggle { display: none; width: 44px; height: 44px; place-items: center; border-radius: 50%; color: #fff; margin-right: -10px; }
.nav-toggle .icon-close { display: none; }
.site-header.is-open .nav-toggle .icon-menu { display: none; }
.site-header.is-open .nav-toggle .icon-close { display: block; }

/* Hero */
.hero { position: relative; overflow: hidden; isolation: isolate; color: var(--color-text-light); background: linear-gradient(160deg, var(--color-bg-dark) 0%, var(--color-bg-dark-2) 55%, var(--color-bg-dark-3) 100%); }
.hero-inner { position: relative; z-index: 2; display: flex; align-items: center; min-height: clamp(540px, 78vh, 700px); padding-top: calc(var(--header-h) + 24px); padding-bottom: 64px; }
.hero-copy { max-width: 500px; }
.page-hero { position: relative; background: var(--color-bg-light); border-bottom: 1px solid var(--color-border); padding-top: calc(var(--header-h) + clamp(56px, 8vw, 104px)); padding-bottom: clamp(56px, 8vw, 104px); }
.page-hero .container > * { max-width: 680px; }
.site-header--light { color: var(--color-text-dark); }
.site-header--light.is-scrolled { background: rgba(247, 248, 250, 0.92); box-shadow: 0 1px 0 var(--color-border); }
.site-header--light .nav-toggle { color: var(--color-text-dark); }
.site-header--light .nav-toggle:focus-visible, .site-header--light .brand:focus-visible { outline-color: var(--color-focus); }
@media (min-width: 961px) {
  .site-header--light :focus-visible { outline-color: var(--color-focus); }
  .site-header--light .nav-list a, .site-header--light .nav-social a { color: var(--color-muted); }
  .site-header--light .nav-list a:hover, .site-header--light .nav-list a[aria-current="page"], .site-header--light .nav-social a:hover { color: var(--color-text-dark); background: rgba(11, 13, 18, 0.06); }
  .site-header--light .btn--light { background: var(--color-text-dark); color: #fff; }
  .site-header--light .btn--light:hover { background: #22283a; }
}

/* Sections */
.section { padding-block: clamp(72px, 9vw, 128px); }
.section--white { background: var(--color-surface); border-block: 1px solid var(--color-border); }
.section--tight { padding-block: clamp(56px, 7vw, 96px); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: clamp(32px, 4.5vw, 56px); }
.section-head h2 { font-size: clamp(2.25rem, 3.6vw, 3rem); }
.section-head p { margin-top: 14px; max-width: 46ch; color: var(--color-muted); font-size: 1.0625rem; }

.app-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(20px, 2.4vw, 32px); padding: 0; margin: 0; list-style: none; }
.app-grid--featured { grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); }
.about-preview { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 7vw, 120px); align-items: start; }
.prose { max-width: 66ch; }
.prose > * + * { margin-top: 1.1em; }
.prose h2 { font-size: 1.5rem; margin-top: 2em; }
.prose h2:first-child { margin-top: 0; }
.prose ul { padding-left: 1.2em; }
.prose li + li { margin-top: 0.4em; }
.prose a { color: var(--color-accent); text-underline-offset: 3px; }
.prose address { color: var(--color-muted); }
.prose { padding: clamp(24px, 5vw, 52px); border: 1px solid var(--color-border); border-radius: 18px; background: var(--color-surface); box-shadow: 0 1px 2px rgba(11, 13, 18, 0.04); }
.prose h2 { font-size: clamp(1.3rem, 2.4vw, 1.65rem); }

/* Footer */
.site-footer { background: var(--color-bg-dark); color: var(--color-text-light-muted); padding-top: clamp(48px, 5.5vw, 64px); }
.footer-grid { display: grid; grid-template-columns: 1.7fr 1fr 1fr 1fr; gap: 32px; }
.footer-brand strong { display: block; color: #fff; font-size: 1.125rem; }
.footer-brand span { display: block; margin-top: 4px; }
.footer-col h2 { font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: #fff; margin-bottom: 14px; }
.footer-col ul { display: grid; gap: 10px; padding: 0; margin: 0; list-style: none; }
.footer-col a { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; }
.footer-col a .icon { width: 16px; height: 16px; }
.footer-col a:hover { color: #fff; }
.footer-bottom { margin-top: 44px; padding-block: 22px; border-top: 1px solid var(--color-border-dark); font-size: 0.85rem; }

/* Compact footer row: brand, link groups and circular social controls. */
.site-footer { padding-bottom: 0; }
.footer-grid { grid-template-columns: minmax(0, 1fr) auto; grid-template-areas: "brand brand" "explore social"; align-items: end; row-gap: 28px; column-gap: clamp(24px, 5vw, 96px); }
.footer-brand { grid-area: brand; }
.footer-grid > :nth-child(2) { grid-area: explore; }
.footer-grid > :nth-child(3) { grid-area: social; }
.footer-grid > :nth-child(4) { display: none; }
.footer-col h2 { display: none; }
.footer-col ul { display: flex; flex-wrap: wrap; gap: 8px 16px; }
.footer-col a { font-size: 0.9rem; }
.footer-grid > :nth-child(2) ul { gap: 8px 20px; }
.footer-grid > :nth-child(3) ul { justify-content: flex-end; gap: 8px; }
.footer-grid > :nth-child(3) a { display: grid; place-items: center; width: 42px; height: 42px; border: 1px solid rgba(255, 255, 255, 0.45); border-radius: 50%; font-size: 0; }
.footer-grid > :nth-child(3) a .icon { width: 17px; height: 17px; }
.footer-bottom { margin-top: 32px; padding-block: 18px; }

/* The reference layout keeps navigation behind a small menu control. */
.site-header .nav-toggle { display: grid; width: auto; min-width: 68px; height: 44px; padding: 0 14px; margin-right: 0; border: 1px solid rgba(255, 255, 255, 0.28); border-radius: 8px; font-size: 0.95rem; font-weight: 600; }
.site-header .nav-toggle .icon { display: none; }
.site-header .nav-toggle::after { content: "Menu"; }
.site-header--light .nav-toggle { border-color: rgba(11, 13, 18, 0.2); }
.site-header .nav-panel { display: none; position: absolute; top: calc(var(--header-h) - 6px); right: var(--gutter); width: min(272px, calc(100vw - var(--gutter) * 2)); flex-direction: column; align-items: stretch; gap: 0; padding: 8px; background: var(--color-bg-dark-2); border: 1px solid rgba(255, 255, 255, 0.12); border-radius: var(--radius-md); box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45); }
.site-header.is-open .nav-panel { display: flex; }

/* Desktop header: visible links and outlined social buttons, matching the reference layout. */
@media (min-width: 961px) {
  .site-header .nav-toggle { display: none; }
  .site-header .nav-panel { position: static; display: flex; width: auto; flex: 1; flex-direction: row; align-items: center; justify-content: flex-end; gap: clamp(24px, 3vw, 52px); padding: 0; background: none; border: 0; border-radius: 0; box-shadow: none; }
  .site-header .nav-list { gap: clamp(22px, 3vw, 48px); }
  .site-header .nav-list a { padding: 0; border-radius: 0; font-size: clamp(1rem, 1.4vw, 1.25rem); font-weight: 500; color: var(--color-text-light); background: none; }
  .site-header .nav-list a:hover, .site-header .nav-list a[aria-current="page"] { color: #fff; background: none; }
  .site-header .nav-social { gap: 12px; }
  .site-header .nav-social a { width: 52px; height: 52px; border: 1px solid rgba(255, 255, 255, 0.72); color: var(--color-text-light); }
  .site-header .nav-social a:hover { color: #fff; background: rgba(255, 255, 255, 0.1); }
  .site-header .nav-panel > .btn { display: none; }
  .site-header--light .nav-list a { color: var(--color-text-dark); }
  .site-header--light .nav-list a:hover, .site-header--light .nav-list a[aria-current="page"] { color: var(--color-text-dark); }
  .site-header--light .nav-social a { border-color: rgba(11, 13, 18, 0.3); color: var(--color-text-dark); }
  .site-header--light .nav-social a:hover { color: var(--color-text-dark); background: rgba(11, 13, 18, 0.06); }
}

/* Minimal footer: compact navigation with the copyright line in place of social controls. */
.footer-grid { grid-template-columns: minmax(0, 1fr) auto; grid-template-areas: "brand brand" "explore copyright"; align-items: end; row-gap: 20px; column-gap: clamp(24px, 5vw, 72px); }
.footer-grid > :nth-child(2) { grid-area: explore; }
.footer-grid > :nth-child(3) { grid-area: copyright; }
.footer-grid > .footer-bottom { margin: 0; padding: 0; border-top: 0; text-align: right; white-space: nowrap; align-self: end; }
@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr; grid-template-areas: "brand" "explore" "copyright"; row-gap: 18px; }
  .footer-grid > .footer-bottom { text-align: left; }
}

/* Reference footer: brand, links and social controls share the middle row. */
.footer-grid { grid-template-columns: minmax(0, 1fr) auto; grid-template-areas: "brand brand" "explore social"; align-items: end; row-gap: 24px; column-gap: clamp(24px, 5vw, 72px); }
.footer-grid > :nth-child(2) { grid-area: explore; }
.footer-grid > :nth-child(3) { grid-area: social; }
.footer-grid > .footer-social ul { justify-content: flex-end; gap: 8px; }
.footer-grid > .footer-social a { display: grid; place-items: center; width: 42px; height: 42px; border: 1px solid rgba(255, 255, 255, 0.45); border-radius: 50%; font-size: 0; }
.footer-grid > .footer-social a .icon { width: 17px; height: 17px; }
.footer-bottom { margin-top: 32px; padding: 16px 0 18px; border-top: 1px solid var(--color-border-dark); }
@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr; grid-template-areas: "brand" "explore" "social"; row-gap: 22px; }
  .footer-grid > .footer-social ul { justify-content: flex-start; }
}

/* Match the reference first viewport: a shorter hero with projects entering immediately. */
@media (min-width: 1280px) {
  .hero-inner { min-height: clamp(500px, 64vh, 610px); padding-bottom: 48px; }
  #featured.section { padding-top: clamp(64px, 6vw, 88px); }
  #featured .section-head { margin-bottom: clamp(28px, 3vw, 40px); }
}

/* Reference first viewport: keep the hero and featured intro compact enough for project icons to enter view. */
@media (min-width: 1280px) {
  .hero-inner { min-height: clamp(480px, 62vh, 590px); }
  #featured.section { padding-top: clamp(40px, 3.5vw, 52px); }
  #featured .section-head { margin-bottom: 16px; }
  #featured .section-head > div > p:last-child { display: none; }
}