:root {
  color-scheme: dark;
  --bg: #0f172a;
  --surface: #111827;
  --surface-alt: #1f2937;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #10b981;
  --accent-hover: #34d399;
  --border: #334155;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.section {
  padding: 5rem 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.9);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.5rem;
}

.logo {
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--accent);
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 0.25rem;
}

.menu-toggle span {
  display: block;
  width: 1.5rem;
  height: 2px;
  margin: 5px 0;
  background: var(--text);
}

.hero {
  min-height: calc(100vh - 4.5rem);
  display: grid;
  align-items: center;
}

.hero-content {
  max-width: 760px;
}

.eyebrow {
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.03em;
}

h1 {
  margin: 0.25rem 0 1rem;
  font-size: clamp(2rem, 6vw, 4rem);
  line-height: 1.1;
}

h2 {
  margin-top: 0;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
}

.hero-subheading {
  color: var(--muted);
  max-width: 62ch;
  margin-bottom: 1.75rem;
}

.btn-primary {
  display: inline-block;
  border: 0;
  border-radius: 0.6rem;
  background: var(--accent);
  color: #022c22;
  text-decoration: none;
  font-weight: 700;
  padding: 0.8rem 1.2rem;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(30%, 1fr));
  gap: 1rem;
}

.card {
  background: linear-gradient(180deg, var(--surface) 0%, var(--surface-alt) 100%);
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  padding: 1.25rem;
}

.card-media {
  width: 100%;
  height: 0;
  padding-bottom: 56.25%; /* 16:9 ratio */
  position: relative;
  overflow: hidden;
  border-radius: 0.6rem;
  margin-bottom: 0.75rem;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
}

.card-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

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

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}

.badges span {
  font-size: 0.8rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.25rem 0.55rem;
  color: #cbd5e1;
}

.card-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.card-links a,
.profile-links a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.link-icon {
  width: 1rem;
  height: 1rem;
  flex: 0 0 1rem;
}

.about-grid,
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.skills-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.65rem;
}

.contact-form {
  display: grid;
  gap: 0.6rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 0.7rem;
  font: inherit;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid rgba(16, 185, 129, 0.25);
  border-color: var(--accent);
}

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

.profile-links {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent);
}

.social-link:hover,
.social-link:focus-visible {
  color: var(--accent-hover);
}

.social-icon {
  width: 1.25rem;
  height: 1.25rem;
  flex: 0 0 1.25rem;
}

@media (max-width: 800px) {
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .menu-toggle {
    display: inline-block;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    right: 4%;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 0.75rem;
    flex-direction: column;
    min-width: 170px;
    display: none;
  }

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