:root {
  --bg: #f5f0e8;
  --bg-soft: #fffaf3;
  --ink: #1d2733;
  --muted: #53616f;
  --accent: #1a73e8;
  --accent-soft: #d8e8ff;
  --teal: #0f8f85;
  --gold: #d9992e;
  --line: rgba(29, 39, 51, 0.12);
  --shadow: 0 18px 40px rgba(30, 55, 90, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Source Sans 3", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(26, 115, 232, 0.14), transparent 28%),
    radial-gradient(circle at left center, rgba(15, 143, 133, 0.12), transparent 26%),
    linear-gradient(180deg, #fffdf8 0%, var(--bg) 48%, #f2ece3 100%);
}

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

img {
  display: block;
  max-width: 100%;
}

.site-header,
main {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0 0.75rem;
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
}

.brand {
  width: 3rem;
  height: 3rem;
  display: grid;
  place-items: center;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #fff;
  background: linear-gradient(145deg, var(--accent), var(--teal));
  border-radius: 1rem;
  box-shadow: var(--shadow);
}

.site-nav {
  display: flex;
  gap: 1.1rem;
  padding: 0.8rem 1rem;
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 999px;
}

.site-nav a {
  color: var(--muted);
  font-weight: 600;
}

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

.hero {
  display: grid;
  grid-template-columns: 1.6fr 0.9fr;
  gap: 1.5rem;
  padding: 3.5rem 0 2.5rem;
}

.hero-copy,
.hero-card,
.project-card,
.diagram-shell,
.diagram-notes,
.evidence-card,
.stack-grid article,
.contact-card,
.metrics article {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 2rem;
  border-radius: 2rem;
}

.hero h1,
.section h2,
.project-card h3,
.stack-grid h3 {
  font-family: "Space Grotesk", sans-serif;
}

.hero h1 {
  margin: 0.2rem 0 1rem;
  font-size: clamp(2.4rem, 5vw, 4.4rem);
  line-height: 0.95;
  max-width: 14ch;
}

.eyebrow,
.card-label,
.project-tag,
.contact-label {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  font-weight: 700;
}

.eyebrow,
.project-tag,
.contact-label {
  color: var(--accent);
}

.lede {
  max-width: 55ch;
  font-size: 1.15rem;
  color: var(--muted);
}

.hero-actions,
.quick-links,
.metrics,
.project-grid,
.evidence-grid,
.stack-grid,
.contact-grid {
  display: grid;
}

.hero-actions {
  grid-template-columns: repeat(2, max-content);
  gap: 0.85rem;
  margin: 1.75rem 0 1.5rem;
}

.button {
  padding: 0.9rem 1.25rem;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.button:hover,
.contact-card:hover,
.project-card:hover,
.stack-grid article:hover,
.metrics article:hover {
  transform: translateY(-3px);
}

.button.primary {
  background: linear-gradient(135deg, var(--accent), #2b8fff);
  color: #fff;
  box-shadow: 0 12px 28px rgba(26, 115, 232, 0.24);
}

.button.secondary {
  background: var(--bg-soft);
  border: 1px solid var(--line);
}

.quick-links {
  gap: 0.45rem;
  padding: 0;
  margin: 0;
  list-style: none;
  color: var(--muted);
}

.quick-links a:hover {
  color: var(--accent);
}

.hero-card {
  padding: 1.75rem;
  border-radius: 1.75rem;
  align-self: start;
  background:
    linear-gradient(180deg, rgba(26, 115, 232, 0.1), rgba(15, 143, 133, 0.04)),
    rgba(255, 255, 255, 0.88);
}

.hero-card ul,
.project-card ul,
.diagram-notes ul {
  margin: 1rem 0 0;
  padding-left: 1.1rem;
}

.hero-card li,
.project-card li,
.diagram-notes li {
  margin-bottom: 0.65rem;
}

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

.metrics article {
  padding: 1.25rem;
  border-radius: 1.3rem;
}

.metric-value {
  display: block;
  font-family: "Space Grotesk", sans-serif;
  font-size: 2.8rem;
  line-height: 1;
  color: var(--accent);
}

.metric-label {
  display: block;
  margin-top: 0.6rem;
  color: var(--muted);
}

.section {
  padding: 4rem 0 0;
}

.section-heading {
  max-width: 52rem;
  margin-bottom: 1.5rem;
}

.section h2 {
  margin: 0.35rem 0 0;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1;
}

.project-grid {
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.project-card {
  padding: 1.5rem;
  border-radius: 1.6rem;
}

.project-card.featured {
  background:
    linear-gradient(160deg, rgba(26, 115, 232, 0.14), rgba(255, 255, 255, 0.86) 50%),
    rgba(255, 255, 255, 0.88);
}

.project-card p,
.evidence-copy p,
.diagram-notes p,
.stack-grid p {
  color: var(--muted);
}

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

.evidence-card {
  overflow: hidden;
  border-radius: 1.6rem;
}

.evidence-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}

.evidence-copy {
  padding: 1.35rem;
}

.evidence-copy h3 {
  margin: 0.2rem 0 0.45rem;
  font-family: "Space Grotesk", sans-serif;
}

.evidence-copy ul {
  margin: 0.9rem 0 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

.evidence-copy li {
  margin-bottom: 0.55rem;
}

.evidence-card.emphasis {
  background:
    linear-gradient(160deg, rgba(26, 115, 232, 0.14), rgba(255, 255, 255, 0.86) 50%),
    rgba(255, 255, 255, 0.88);
  display: flex;
}

.evidence-note {
  margin-top: 1rem;
  padding: 1.4rem 1.5rem;
  border-radius: 1.5rem;
  background:
    linear-gradient(160deg, rgba(26, 115, 232, 0.08), rgba(255, 255, 255, 0.9) 52%),
    rgba(255, 255, 255, 0.92);
}

.evidence-note h3 {
  margin: 0.2rem 0 0.45rem;
  font-family: "Space Grotesk", sans-serif;
}

.evidence-note p:last-child {
  margin-bottom: 0;
  color: var(--muted);
}

.architecture-section .section-heading {
  grid-column: 1 / -1;
  max-width: 32rem;
  margin-bottom: 1.1rem;
}

.architecture-section .section-heading h2 {
  max-width: 10ch;
}

.architecture-section {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 1.25rem;
  align-items: start;
}

.diagram-shell,
.diagram-notes,
.stack-grid article,
.contact-card {
  border-radius: 1.5rem;
  padding: 1.35rem;
}

.diagram-shell {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(240, 247, 255, 0.92));
}

.diagram-shell img {
  width: 100%;
  height: auto;
}

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

.contact {
  padding-bottom: 3.5rem;
}

.contact-grid {
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.contact-card {
  min-height: 10.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

@media (max-width: 920px) {
  .hero,
  .split,
  .project-grid,
  .evidence-grid,
  .contact-grid,
  .metrics,
  .stack-grid {
    grid-template-columns: 1fr;
  }

  .site-header {
    flex-direction: column;
    gap: 0.85rem;
  }

  .site-nav {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero-actions {
    grid-template-columns: 1fr;
  }

  .button {
    text-align: center;
  }
}

@media (max-width: 640px) {
  .site-header,
  main {
    width: min(100% - 1rem, 1120px);
  }

  .hero {
    padding-top: 2.2rem;
  }

  .hero-copy,
  .hero-card,
  .project-card,
  .diagram-shell,
  .diagram-notes,
  .stack-grid article,
  .contact-card,
  .metrics article {
    border-radius: 1.15rem;
  }

  .hero h1 {
    max-width: 11ch;
  }
}