*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── GLOBAL FOCUS ── */
*:focus-visible {
  outline: 2px solid var(--crimson, #c41e3a);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ── SKIP LINK ── */
.skip-link {
  position: fixed;
  top: -100%;
  left: 1rem;
  background: #c41e3a;
  color: #fff;
  padding: 0.6rem 1.2rem;
  border-radius: 0 0 8px 8px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  z-index: 9999;
  transition: top 0.15s;
  white-space: nowrap;
}
.skip-link:focus { top: 0; }

:root {
  --bg-base:    #0d1117;
  --bg-surface: #13171d;
  --bg-raised:  #1a1f27;
  --crimson:    #c41e3a;
  --crimson-h:  #e0253f;
  --amber:      #e08c30;
  --indigo:     #4f46e5;
  --text:       #e8eaed;
  --muted:      #8b949e;
  --border:     #21262d;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg-base);
  color: var(--text);
  font-family: system-ui, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }

/* ── NAV ── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13,17,23,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--crimson);
  flex-shrink: 0;
}
.nav-links { display: flex; gap: 1.75rem; align-items: center; }
.nav-links a {
  color: var(--muted);
  font-size: 0.9rem;
  transition: color 0.15s;
  padding: 0.35rem 0;
}
.nav-links a:hover  { color: var(--text); }
.nav-links a:focus-visible {
  outline: 2px solid var(--crimson);
  outline-offset: 4px;
  border-radius: 3px;
  color: var(--text);
}

/* ── HAMBURGER TOGGLE ── */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px 8px;
  border-radius: 6px;
  flex-shrink: 0;
  transition: background 0.15s;
}
.nav-toggle:hover { background: rgba(255,255,255,0.06); }
.nav-toggle:focus-visible {
  outline: 2px solid var(--crimson);
  outline-offset: 2px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.22s ease, opacity 0.22s ease;
  transform-origin: center;
}

/* Hamburger → X */
nav.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
nav.nav-open .nav-toggle span:nth-child(2) { opacity: 0; transform: scaleX(0); }
nav.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── MOBILE NAV ── */
@media (max-width: 640px) {
  nav { padding: 0 1.25rem; }

  .nav-toggle { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(13,17,23,0.98);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 0.5rem 0;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
  }

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

  .nav-links a {
    padding: 0.9rem 1.5rem;
    font-size: 1rem;
    border-bottom: 1px solid var(--border);
    color: var(--muted);
  }
  .nav-links a:last-child { border-bottom: none; }
  .nav-links a:hover,
  .nav-links a:focus-visible { color: var(--text); background: rgba(255,255,255,0.04); }
}

/* ── BUTTONS ── */
.btn {
  display: inline-block;
  padding: 0.65rem 1.4rem;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: opacity 0.15s, transform 0.1s;
  cursor: pointer;
}
.btn:hover { opacity: 0.88; transform: translateY(-1px); }
.btn-primary   { background: var(--crimson);  color: #fff; }
.btn-secondary { background: var(--bg-raised); color: var(--text); border: 1px solid var(--border); }
.btn-indigo    { background: var(--indigo);    color: #fff; }

/* ── SECTIONS ── */
section { padding: 5rem 2rem; }
.section-inner { max-width: 960px; margin: 0 auto; }
.section-alt { background: var(--bg-surface); }
.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 2.25rem;
  color: var(--text);
}
.section-title span {
  display: inline-block;
  width: 3px;
  height: 1.1em;
  background: var(--crimson);
  margin-right: 0.6rem;
  vertical-align: middle;
  border-radius: 2px;
}

/* ── HOMEPAGE HERO ── */
.hero {
  padding: 7rem 2rem 5rem;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}
.hero-wordmark {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--crimson);
  line-height: 1.1;
  margin-bottom: 1.25rem;
}
.hero-tagline {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 520px;
  margin: 0 auto 2.25rem;
}
.hero-ctas { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ── PROJECT CARDS (homepage) ── */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}
a.card { display: block; }
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--card-accent, var(--crimson));
  border-radius: 8px;
  padding: 1.4rem 1.5rem;
  transition: transform 0.15s, box-shadow 0.15s;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,0.4); }
.card-tag {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--card-accent, var(--muted));
  margin-bottom: 0.5rem;
}
.card h3 { font-size: 1.05rem; margin-bottom: 0.5rem; }
.card p  { font-size: 0.875rem; color: var(--muted); line-height: 1.55; }
.card-arrow {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--card-accent, var(--crimson));
}

.card-extrudel  { --card-accent: var(--indigo); }
.card-bim       { --card-accent: var(--amber); }
.card-webdev    { --card-accent: #14b8a6; }
.card-modeling  { --card-accent: var(--amber); }
.card-making    { --card-accent: #eb3a52; } /* lightened for small-text contrast ≥4.5:1 */
.card-drone     { --card-accent: #3b9ddd; }
.card-retro     { --card-accent: #22c55e; }

.card-retro .card-tag,
.card-retro h3 {
  font-family: 'Press Start 2P', monospace;
  font-size: 0.65rem;
  line-height: 1.8;
}

/* ── ABOUT (homepage) ── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
@media (max-width: 640px) { .about-grid { grid-template-columns: 1fr; } }
.about-bio { font-size: 0.95rem; color: var(--muted); line-height: 1.7; }
.about-bio p + p { margin-top: 1rem; }

/* ── TAGS ── */
.tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.3rem 0.7rem;
  font-size: 0.8rem;
  color: var(--muted);
}
.tag-retro {
  font-family: 'Press Start 2P', monospace;
  font-size: 0.55rem;
  color: #22c55e;
  border-color: #22c55e44;
  background: #22c55e11;
  line-height: 2;
}

/* ── PAGE HERO (project pages) ── */
.page-hero {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  padding: 3.5rem 2rem 3rem;
}
.page-back {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 1.75rem;
  transition: color 0.15s;
}
.page-back:hover { color: var(--text); }
.page-tag {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 0.6rem;
}
.page-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--page-accent, var(--crimson));
  line-height: 1.1;
  margin-bottom: 0.85rem;
}
.page-subtitle {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 560px;
  margin-bottom: 1.75rem;
}

/* ── PROJECT CONTENT ── */
.prose {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.8;
  max-width: 680px;
}
.prose p + p { margin-top: 1rem; }
.prose a {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--page-accent, var(--crimson));
  transition: color 0.15s;
}
.prose a:hover { color: var(--page-accent, var(--crimson)); }

.project-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
  align-items: start;
}
@media (max-width: 680px) { .project-grid { grid-template-columns: 1fr; } }

.meta-block {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--page-accent, var(--crimson));
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
}
.meta-block + .meta-block { margin-top: 1rem; }
.meta-block h4 {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--page-accent, var(--crimson));
  margin-bottom: 0.75rem;
}
.meta-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.meta-list li {
  font-size: 0.85rem;
  color: var(--muted);
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 1.25rem;
}
.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  font-size: 0.9rem;
  color: var(--muted);
}
.feature-list li::before {
  content: '—';
  color: var(--page-accent, var(--crimson));
  flex-shrink: 0;
  font-weight: 700;
}

/* ── CONTACT ── */
.contact-links { display: flex; gap: 1rem; flex-wrap: wrap; }

/* ── PROJECT ENTRIES (software / webdev listing pages) ── */
.project-entry {
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border);
}
.project-entry:last-child { border-bottom: none; }

.project-name {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--entry-accent, var(--indigo));
  margin-bottom: 0.3rem;
}
.project-oneliner {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 1.1rem;
}
.project-body {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.8;
  max-width: 700px;
}
.project-body p + p { margin-top: 0.9rem; }
.project-footer {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-top: 1.25rem;
  flex-wrap: wrap;
}
.stack-tags { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.stack-tag {
  font-size: 0.72rem;
  font-weight: 600;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.2rem 0.5rem;
  color: var(--muted);
}
.project-link {
  font-size: 0.82rem;
  color: var(--entry-accent, var(--indigo));
  margin-left: auto;
}
.project-link:hover { text-decoration: underline; }

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
}

/* ── REDUCED MOTION ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}