:root {
  --bg: #0b0e13;
  --bg-soft: #121722;
  --panel: #171d29;
  --text: #f2f5f8;
  --muted: #aab3c0;
  --line: #2b3442;
  --accent: #8db7d8;
  --accent-strong: #b8d7ee;
  --max: 1180px;
  --radius: 18px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
               "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent-strong);
  outline-offset: 4px;
}

.container {
  width: min(calc(100% - 40px), var(--max));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 10px;
  background: white;
  color: black;
  padding: .65rem .9rem;
  z-index: 999;
}

.skip-link:focus { left: 10px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 14, 19, .9);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.nav-wrap {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  font-weight: 800;
  letter-spacing: .14em;
  font-size: .95rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-nav a {
  color: var(--muted);
  font-size: .95rem;
}

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

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  padding: .55rem .75rem;
}

.hero {
  min-height: calc(100vh - 70px);
  display: grid;
  place-items: center;
  padding: 80px 0;

  background-image:
    linear-gradient(rgba(11, 14, 19, 0.70), rgba(11, 14, 19, 0.82)),
    url("../images/hero-background.jpg");

  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(280px, .7fr);
  gap: clamp(3rem, 7vw, 7rem);
  align-items: center;
}

.eyebrow,
.section-kicker,
.panel-label,
.project-type {
  margin: 0 0 1rem;
  text-transform: uppercase;
  letter-spacing: .14em;
  font-size: .77rem;
  font-weight: 700;
  color: var(--accent);
}

h1, h2, h3, p { margin-top: 0; }

h1 {
  margin-bottom: 1.4rem;
  max-width: 900px;
  font-size: clamp(3rem, 7vw, 6.7rem);
  line-height: .98;
  letter-spacing: -.045em;
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(2rem, 4.5vw, 3.7rem);
  line-height: 1.05;
  letter-spacing: -.03em;
}

h3 {
  font-size: 1.18rem;
  line-height: 1.25;
}

.hero-copy,
.prose,
.section-note,
.project p,
.timeline p,
.contact-section p {
  color: var(--muted);
}

.hero-copy {
  max-width: 750px;
  font-size: clamp(1.05rem, 1.7vw, 1.25rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  padding: .7rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.button.primary {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.button.secondary:hover {
  border-color: var(--accent);
}

.hero-panel {
  background: linear-gradient(180deg, rgba(23, 29, 41, .95), rgba(18, 23, 34, .95));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.6rem;
}

.signal-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.signal-list li {
  padding: .85rem 0;
  border-top: 1px solid var(--line);
}

.signal-list li:first-child { border-top: 0; }

.section {
  padding: clamp(80px, 10vw, 135px) 0;
}

.section-alt {
  background-image:
    linear-gradient(
      rgba(18, 23, 34, 0.88),
      rgba(18, 23, 34, 0.88)
    ),
    url("../images/engfoci.jpg");

  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;

  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.split {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: clamp(3rem, 8vw, 8rem);
}

.prose {
  font-size: 1.08rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 2.5rem;
}

.card,
.project {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.card p { color: var(--muted); }

.section-heading-row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 3rem;
  margin-bottom: 2.5rem;
}

.section-heading-row h2,
.section-heading-row p { margin-bottom: 0; }

.section-note {
  max-width: 390px;
  text-align: right;
}

.selected-work {
  background-image:
    linear-gradient(
      rgba(11, 14, 19, 0.88),
      rgba(11, 14, 19, 0.88)
    ),
    url("../images/projects.jpg");

  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

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

.project {
  min-height: 250px;
  display: flex;
  flex-direction: column;
}

.project .status {
  margin-top: auto;
  margin-bottom: 0;
  padding-top: 1rem;
  color: var(--accent-strong);
  font-size: .9rem;
}

.timeline {
  border-left: 1px solid var(--line);
  padding-left: 1.5rem;
}

.timeline-item {
  position: relative;
  padding: 0 0 2rem 1rem;
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-item::before {
  content: "";
  position: absolute;
  left: -1.84rem;
  top: .25rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr .65fr;
  gap: clamp(3rem, 7vw, 7rem);
  align-items: end;
}

.contact-links {
  display: grid;
}

.contact-links a {
  display: flex;
  justify-content: space-between;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.contact-links a:last-child { border-bottom: 1px solid var(--line); }
.contact-links a:hover { color: var(--text); }

.site-footer {
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  color: var(--muted);
  font-size: .86rem;
}

.footer-row p { margin-bottom: 0; }

@media (max-width: 900px) {
  .hero-grid,
  .split,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .section-heading-row {
    display: block;
  }

  .section-note {
    text-align: left;
    margin-top: 1rem;
  }
}

@media (max-width: 680px) {
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: absolute;
    left: 20px;
    right: 20px;
    top: 70px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 14px;
  }

  .site-nav.open { display: flex; }

  .card-grid,
  .project-grid {
    grid-template-columns: 1fr;
  }

  .footer-row {
    flex-direction: column;
    gap: .4rem;
  }

  h1 { font-size: clamp(2.7rem, 13vw, 4.2rem); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}