:root {
  --paper: #F2F0E4;
  --ink: #1F2A24;
  --moss: #5C6B47;
  --rust: #A6531C;
  --line: rgba(31, 42, 36, 0.15);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 17px;
  line-height: 1.55;
}

h1, h2, h3 {
  font-family: 'Spectral', serif;
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 0.4em;
}

a {
  color: var(--rust);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

/* Header */
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--line);
}
.wordmark {
  font-family: 'Spectral', serif;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--ink);
}
.site-header nav a {
  margin-left: 1.5rem;
  color: var(--ink);
  font-size: 0.95rem;
}

main { max-width: 900px; margin: 0 auto; padding: 0 2rem; }

/* Hero — contour-line motif, one deliberate flourish rather than decoration everywhere */
.hero {
  padding: 4rem 0 2.5rem;
  background-image:
    repeating-radial-gradient(circle at 85% 15%, transparent 0, transparent 18px, var(--line) 19px, transparent 20px);
}
.hero h1 {
  font-size: 2.3rem;
  max-width: 15ch;
}
.hero p { max-width: 60ch; color: rgba(31,42,36,0.75); }

/* Project grid */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.75rem;
  padding: 1rem 0 4rem;
}
.project-card {
  display: block;
  color: var(--ink);
  border: 1px solid var(--line);
}
.project-card:hover { border-color: var(--moss); text-decoration: none; }
.project-card img {
  width: 100%;
  height: 170px;
  object-fit: cover;
  display: block;
  border-bottom: 1px solid var(--line);
}
.project-card-body { padding: 1rem 1.1rem 1.3rem; }
.project-card-body h2 { font-size: 1.15rem; }
.project-card .tools {
  color: var(--moss);
  font-size: 0.85rem;
  margin: 0.2rem 0 0.5rem;
}
.project-card .summary {
  font-size: 0.92rem;
  color: rgba(31,42,36,0.75);
  margin: 0;
}

/* Individual project page */
.project-header { padding: 3rem 0 1rem; }
.back { font-size: 0.9rem; }
.project h1 { font-size: 2rem; margin-top: 0.6rem; }
.project .tools { color: var(--moss); font-size: 0.95rem; }
.project .summary { max-width: 60ch; }
.project-hero {
  width: 100vw;
  max-width: 1100px;
  margin: 1.5rem calc(50% - 50vw);
  border: 1px solid var(--line);
  display: block;
}
@media (max-width: 1100px) {
  .project-hero {
    width: 100%;
    max-width: 100%;
    margin: 1.5rem 0;
  }
}
.project-body { max-width: 68ch; }
.embed-wrap {
  margin: 2rem 0;
  border: 1px solid var(--line);
}
.embed-wrap iframe {
  width: 100%;
  height: 560px;
  border: 0;
  display: block;
}
.pdf-link { margin: 2rem 0 4rem; font-size: 1.05rem; }

/* Skills page */
.skills-page { padding: 3rem 0 4rem; max-width: 68ch; }
.skills-page > p { color: rgba(31,42,36,0.75); max-width: 60ch; }
.skill-group {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}
.skill-group h2 { font-size: 1.3rem; }
.skill-source {
  color: var(--moss);
  font-size: 0.85rem;
  margin: 0.2rem 0 0.8rem;
}
.skill-group ul { padding-left: 1.2rem; margin: 0; }
.skill-group li { margin-bottom: 0.3rem; }

/* About */
.about { padding: 3rem 0 4rem; max-width: 65ch; }
.about ul { padding-left: 1.2rem; }

/* Footer */
.site-footer {
  display: flex;
  justify-content: space-between;
  padding: 1.5rem 2rem;
  border-top: 1px solid var(--line);
  font-size: 0.85rem;
  color: rgba(31,42,36,0.6);
}

@media (max-width: 600px) {
  .site-header, .site-footer { padding: 1.2rem; flex-direction: column; gap: 0.5rem; align-items: flex-start; }
  main { padding: 0 1.2rem; }
}