:root {
  --bg: #0b1220;
  --surface: #111b2e;
  --surface-2: #16243a;
  --text: #e6ecf5;
  --text-muted: #9fb0c8;
  --primary: #34d399;
  --primary-soft: #173f35;
  --border: #24354f;
  --shadow: 0 20px 45px rgba(1, 6, 18, 0.35);
  --radius: 14px;
  --mono: "Oxygen Mono", monospace;
  --sans: "Oxygen", sans-serif;
}

html {
  box-sizing: border-box;
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--text);
  background: radial-gradient(circle at top right, #162d4a 0%, var(--bg) 45%);
  line-height: 1.55;
}

h1,
h2,
h3,
h4,
p {
  margin: 0;
}

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

a:hover {
  color: #75efc1;
}

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

.container {
  width: min(1140px, 92vw);
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -3rem;
  z-index: 1000;
  background: var(--primary);
  color: #041118;
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  font-weight: 700;
}

.skip-link:focus {
  top: 0.75rem;
}

header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 14, 25, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

nav {
  padding: 1rem 0;
}

nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem 1.25rem;
}

nav li:first-child {
  flex-basis: 100%;
  text-align: center;
}

nav h1 {
  font-size: 1.15rem;
}

nav h1 a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text);
}

nav h1 [class*="fa-"] {
  color: var(--primary);
}

nav a {
  color: var(--text-muted);
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}

nav a:hover {
  color: var(--primary);
}

nav [class*="fa-"] {
  font-size: 1.35rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.button,
.button-secondary {
  display: inline-block;
  border-radius: 9px;
  padding: 0.7rem 1rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 700;
  transition: transform 120ms ease, background-color 120ms ease, color 120ms ease;
}

.button {
  background: var(--primary);
  color: #031018;
}

.button:hover {
  background: #75efc1;
  color: #031018;
  transform: translateY(-1px);
}

.button-secondary {
  border: 1px solid var(--border);
  color: var(--text);
}

.button-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
}

.hero {
  padding: 5.5rem 0 4rem;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 1.1rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h2 {
  font-size: clamp(2rem, 5vw, 3.8rem);
  line-height: 1.12;
  max-width: 16ch;
}

.hero .lead {
  margin-top: 1.2rem;
  color: var(--text-muted);
  font-size: 1.08rem;
  max-width: 63ch;
}

.hero .context {
  margin-top: 0.85rem;
  color: var(--text-muted);
  max-width: 72ch;
}

.hero-cta {
  margin-top: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.gradient {
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--primary) 50%, transparent 100%);
}

.section {
  padding: 4rem 0;
}

.section h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 1.2rem;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem;
  box-shadow: var(--shadow);
}

.panel p + p {
  margin-top: 0.9rem;
}

.skills-grid {
  display: grid;
  gap: 1rem;
}

.skills-grid h3 {
  color: var(--primary);
  margin-bottom: 0.7rem;
  font-size: 1.05rem;
}

.skills-grid ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text-muted);
}

.skills-grid li + li {
  margin-top: 0.5rem;
}

.section-dark {
  background: rgba(3, 9, 17, 0.75);
}

.project-grid {
  display: grid;
  gap: 1rem;
}

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

.project-card img {
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.project-card img.project-image-contained {
  object-fit: contain;
  max-height: 260px;
  background: #0d1628;
}

.project-content {
  padding: 1.2rem;
}

.project-label {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--primary);
}

.project-content h3 {
  font-size: 1.3rem;
  margin-top: 0.45rem;
  margin-bottom: 0.75rem;
}

.project-content p {
  color: var(--text-muted);
}

.project-content .impact {
  margin-top: 0.8rem;
}

.project-content .impact strong {
  color: var(--text);
}

.tag-list {
  list-style: none;
  padding: 0;
  margin: 0.95rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.tag-list li {
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  border-radius: 999px;
  padding: 0.25rem 0.6rem;
  font-size: 0.8rem;
}

.project-links {
  margin-top: 0.9rem;
  font-family: var(--mono);
  font-size: 0.8rem;
}

.about-layout {
  display: grid;
  gap: 1rem;
}

.about-layout img {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  object-fit: cover;
  max-height: 420px;
}

.section-contact {
  text-align: center;
}

.section-contact p {
  color: var(--text-muted);
  width: min(640px, 100%);
  margin: 0 auto 1.4rem;
}

footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0 3rem;
}

footer h3 {
  font-size: 1.1rem;
  text-align: center;
}

footer ul {
  list-style: none;
  padding: 0;
  margin: 1.2rem 0;
  display: flex;
  justify-content: center;
  gap: 1.6rem;
  font-size: 1.85rem;
}

footer li a {
  color: var(--text-muted);
}

footer li a:hover {
  color: var(--primary);
}

footer p {
  text-align: center;
  color: var(--text-muted);
}

@media (min-width: 760px) {
  nav li:first-child {
    flex-basis: auto;
    margin-right: auto;
  }

  .skills-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .project-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: stretch;
  }

  .project-card.featured {
    grid-template-columns: 1.15fr 1fr;
  }

  .project-card img {
    height: 100%;
  }

  .project-card img.project-image-contained {
    height: auto;
    max-height: 320px;
  }

  .about-layout {
    grid-template-columns: 1.25fr 0.75fr;
    align-items: stretch;
  }
}

@media (min-width: 980px) {
  .project-grid {
    gap: 1.35rem;
  }
}