styles.css

/* Base variables */
:root {
  --bg: #0b0c10;
  --surface: #0e1116;
  --elevated: #131722;
  --text: #e7eaf0;
  --muted: #a3a9b6;
  --border: #212734;
  --accentA: #9b8cff;
  --accentB: #22d3ee;
  --accentC: #60a5fa;
  --brand-gradient: linear-gradient(90deg, var(--accentA), var(--accentB) 50%, var(--accentC));
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 10px;
}

/* Dark mode disabled: force white background */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
svg,
video,
canvas {
  display: block;
  max-width: 100%;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: min(1100px, calc(100% - 2 * var(--container-padding)));
  margin-inline: auto;
}

.section {
  padding: 72px 0;
  scroll-margin-top: var(--header-height);
}

h1, h2, h3 {
  line-height: 1.2;
  margin: 0 0 0.75rem 0;
}

h1 {
  font-size: clamp(2rem, 4vw + 1rem, 3rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.5rem, 1.4vw + 1rem, 2rem);
}

h3 {
  font-size: 1.25rem;
}

p {
  margin: 0 0 1rem 0;
  color: var(--muted);
}

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

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
}

.text-gradient {
  background: linear-gradient(90deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.btn {
  display: inline-block;
  border-radius: 999px;
  padding: 0.75rem 1.1rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-weight: 600;
  line-height: 1;
  box-shadow: var(--shadow-sm);
  transition: transform 120ms ease, background-color 120ms ease, border-color 120ms ease, color 120ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  text-decoration: none;
}

.btn--primary {
  background: var(--primary);
  border-color: transparent;
  color: var(--primary-contrast);
}

.btn--primary:hover {
  background: var(--primary-hover);
}

.btn--ghost {
  background: transparent;
}

.btn--small {
  padding: 0.55rem 0.9rem;
  font-size: 0.95rem;
}

.skip-link {
  position: absolute;
  left: 0;
  top: -40px;
  background: var(--primary);
  color: var(--primary-contrast);
  padding: 0.5rem 0.75rem;
  z-index: 1000;
  border-radius: 0 0 8px 0;
}

.skip-link:focus {
  top: 0;
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: saturate(120%) blur(10px);
  background-color: color-mix(in oklab, var(--bg), transparent 20%);
  border-bottom: 1px solid var(--border);
}

.nav {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  font-weight: 800;
  color: var(--text);
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

.nav-list {
  list-style: none;
  display: flex;
  gap: 0.75rem;
  padding: 0;
  margin: 0;
  align-items: center;
}

.nav-list a {
  color: var(--text);
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
}

.nav-list a:hover {
  background: var(--card);
  text-decoration: none;
}

.hero {
  background:
    radial-gradient(1200px 400px at 10% -10%, color-mix(in oklab, var(--accent), transparent 70%), transparent),
    radial-gradient(1200px 400px at 90% -10%, color-mix(in oklab, var(--primary), transparent 70%), transparent);
}

.hero .container {
  padding-top: 64px;
  padding-bottom: 64px;
}

.lede {
  font-size: 1.15rem;
  max-width: 60ch;
}

.cta {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.grid {
  display: grid;
  gap: 2rem;
}

.two-col {
  grid-template-columns: 1.2fr 0.8fr;
}

@media (max-width: 900px) {
  .two-col {
    grid-template-columns: 1fr;
  }
}

.key-highlights ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.key-highlights li {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 0.9rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  box-shadow: var(--shadow-sm);
}

.key-highlights .k {
  font-weight: 700;
  color: var(--text);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 1rem 0 0 0;
}

.tags li {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 0.4rem 0.65rem;
  border-radius: 999px;
  font-size: 0.95rem;
}

.tags--small li {
  font-size: 0.85rem;
  padding: 0.35rem 0.6rem;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1rem;
}

.projects-grid .card:nth-child(1) {
  grid-column: span 6;
}

.projects-grid .card:nth-child(2) {
  grid-column: span 6;
}

.projects-grid .card:nth-child(3) {
  grid-column: span 12;
}

@media (max-width: 900px) {
  .projects-grid .card {
    grid-column: span 12;
  }
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.card-body {
  padding: 1.25rem;
}

.card-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.timeline {
  list-style: none;
  padding: 0;
  margin: 0;
  border-left: 2px solid var(--border);
}

.timeline-item {
  position: relative;
  padding-left: 1rem;
  margin-left: 0.5rem;
  margin-bottom: 1.25rem;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -9px;
  top: 0.4rem;
  width: 12px;
  height: 12px;
  background: var(--bg);
  border: 2px solid var(--primary);
  border-radius: 50%;
}

.timeline-content h3 {
  margin-bottom: 0.25rem;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
}

.contact-link {
  display: inline-block;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
}

.contact-link:hover {
  text-decoration: none;
  border-color: var(--primary);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  margin-top: 32px;
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 640px) {
  .section {
    padding: 56px 0;
  }

  .nav-list {
    gap: 0.25rem;
    overflow-x: auto;
  }

  .nav-list a {
    white-space: nowrap;
  }
}