:root {
  color-scheme: light;
  --bg: oklch(0.99 0.01 150);
  --bg-deep: oklch(0.97 0.02 148);
  --surface: oklch(0.985 0.012 150);
  --ink: oklch(0.26 0.04 155);
  --muted: oklch(0.46 0.035 152);
  --primary: oklch(0.48 0.09 152);
  --primary-soft: oklch(0.92 0.045 150);
  --accent: #9CB080;
  --accent-bright: #C9E3A6;
  --deep: #2B5748;
  --mid: #618764;
  --border: oklch(0.9 0.022 150);
  --shadow: oklch(0.35 0.04 155 / 0.1);
  --hero-ecg: #2B5748;
  --radius-lg: 1.25rem;
  --radius-md: 0.875rem;
  --radius-pill: 999px;
  --font-display: "Young Serif", Georgia, serif;
  --font-body: "Manrope", system-ui, sans-serif;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --page: min(100% - 2rem, 58rem);
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: oklch(0.18 0.02 155);
  --bg-deep: oklch(0.15 0.02 155);
  --surface: oklch(0.22 0.025 155);
  --ink: oklch(0.93 0.02 145);
  --muted: oklch(0.72 0.03 150);
  --primary: oklch(0.72 0.09 145);
  --primary-soft: oklch(0.28 0.04 150);
  --border: oklch(0.32 0.03 150);
  --shadow: oklch(0.05 0.02 155 / 0.45);
  --hero-ecg: #9CB080;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% -8%, color-mix(in oklab, var(--accent) 28%, transparent), transparent 34%),
    radial-gradient(circle at 88% 0%, color-mix(in oklab, var(--mid) 22%, transparent), transparent 28%),
    var(--bg);
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 100;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-pill);
  background: var(--deep);
  color: #fff;
  text-decoration: none;
}

.skip-link:focus {
  top: 1rem;
}

.topbar {
  width: var(--page);
  margin: 0 auto;
  padding: 1.25rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: color-mix(in oklab, var(--bg) 82%, transparent);
}

.brand {
  font-family: var(--font-display);
  font-size: 1.15rem;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.topnav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.topnav a,
.theme-toggle {
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--primary);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-pill);
  background: transparent;
  border: 0;
  cursor: pointer;
  font-family: inherit;
  transition: background 180ms var(--ease-out), transform 180ms var(--ease-out);
}

.topnav a:hover,
.topnav a:focus-visible,
.theme-toggle:hover,
.theme-toggle:focus-visible {
  background: var(--primary-soft);
  transform: translateY(-1px);
  outline: none;
}

.hero {
  position: relative;
  min-height: min(72vh, 34rem);
  width: var(--page);
  margin: 0 auto 2.5rem;
  display: grid;
  align-content: end;
  gap: 1rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius-lg) + 0.35rem);
  background: linear-gradient(
    180deg,
    color-mix(in oklab, var(--surface) 80%, transparent),
    var(--surface)
  );
  overflow: hidden;
  box-shadow: 0 18px 40px var(--shadow);
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.9;
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 34rem;
}

.eyebrow {
  margin: 0 0 0.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--mid);
}

.hero h1 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 8vw, 4.4rem);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: -0.03em;
  text-wrap: balance;
  color: var(--deep);
}

html[data-theme="dark"] .hero h1 {
  color: var(--accent-bright);
}

.lede {
  margin: 0 0 1.75rem;
  max-width: 32ch;
  color: var(--muted);
  font-size: 1.125rem;
  text-wrap: pretty;
}

.hero-actions,
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 0.68rem 1.05rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 180ms var(--ease-out), border-color 180ms var(--ease-out), transform 180ms var(--ease-out);
}

.btn.primary {
  background: var(--deep);
  color: #f4faf2;
}

html[data-theme="dark"] .btn.primary {
  background: var(--accent);
  color: #132018;
}

.btn.primary:hover,
.btn.primary:focus-visible {
  transform: translateY(-1px);
  outline: none;
  filter: brightness(1.05);
}

.btn.secondary {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--border);
}

.btn.secondary:hover,
.btn.secondary:focus-visible {
  background: var(--primary-soft);
  transform: translateY(-1px);
  outline: none;
}

.projects {
  width: var(--page);
  margin: 0 auto;
  padding: 1rem 0 4.5rem;
}

.section-head {
  margin-bottom: 1.75rem;
  max-width: 36rem;
}

.section-head h2 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 400;
  letter-spacing: -0.02em;
}

.section-head p {
  margin: 0;
  color: var(--muted);
}

.project-grid {
  display: grid;
  gap: 1.25rem;
}

.project {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 3vw, 1.75rem);
  box-shadow: 0 12px 32px var(--shadow);
}

.project.featured {
  background: linear-gradient(
    180deg,
    color-mix(in oklab, var(--primary-soft) 70%, var(--surface)) 0%,
    var(--surface) 48%
  );
}

.project-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem 1rem;
  margin-bottom: 0.65rem;
}

.project h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 1.75rem);
  font-weight: 400;
  letter-spacing: -0.02em;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0 0 0.85rem;
  padding: 0;
  list-style: none;
}

.meta li {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-soft);
  padding: 0.28rem 0.62rem;
  border-radius: var(--radius-pill);
}

.project > p {
  margin: 0 0 1rem;
  color: var(--muted);
  max-width: 62ch;
  text-wrap: pretty;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 0 0 1.15rem;
}

.metrics div {
  padding: 0.75rem 0.85rem;
  border-radius: var(--radius-md);
  background: color-mix(in oklab, var(--bg) 70%, var(--primary-soft));
  border: 1px solid var(--border);
}

.metrics dt {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--muted);
}

.metrics dd {
  margin: 0.2rem 0 0;
  font-family: var(--font-display);
  font-size: 1.45rem;
  color: var(--deep);
}

html[data-theme="dark"] .metrics dd {
  color: var(--accent-bright);
}

.video {
  margin: 0 0 1rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #132018;
}

.video iframe {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
}

.footer {
  width: var(--page);
  margin: 0 auto;
  padding: 1.5rem 0 2.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9375rem;
}

.footer p {
  margin: 0;
}

.footer a {
  color: var(--primary);
  font-weight: 600;
  text-decoration: none;
}

.footer a:hover,
.footer a:focus-visible {
  text-decoration: underline;
  outline: none;
}

.reveal {
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity 480ms var(--ease-out),
    transform 480ms var(--ease-out);
  transition-delay: var(--delay, 0ms);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

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

  .reveal,
  .btn,
  .topnav a,
  .theme-toggle {
    animation: none !important;
    transition: none !important;
  }

  .reveal { opacity: 1; transform: none; }

  .hero-canvas {
    opacity: 0.35;
  }
}

@media (max-width: 640px) {
  .metrics {
    grid-template-columns: 1fr;
  }

  .topnav a:not(:last-of-type) {
    display: none;
  }
}