/* Minimal, responsive portfolio styles */

:root {
  --bg: #0b0c10;
  --bg-alt: #0f1116;
  --text: #e5e7eb;
  --muted: #b3b9c6;
  --brand: #4f46e5;
  --brand-weak: #a5b4fc;
  --card: #11131a;
  --border: #1f2430;
  --container: 1100px;
  --radius: 12px;
  --space: 1rem;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.skip-link:focus { left: 1rem; top: 1rem; width: auto; height: auto; background: var(--brand); color: #fff; padding: .5rem .75rem; border-radius: 6px; }

.container { max-width: var(--container); margin-inline: auto; padding: 0 1rem; }

/* Header / Nav */
.site-header { position: sticky; top: 0; z-index: 50; backdrop-filter: saturate(1.2) blur(8px); background: color-mix(in srgb, var(--bg) 85%, transparent); border-bottom: 1px solid var(--border); }
.nav-bar { display: flex; align-items: center; justify-content: space-between; min-height: 64px; }
.brand { color: var(--text); text-decoration: none; font-weight: 700; letter-spacing: .2px; }

.site-nav ul { list-style: none; display: flex; gap: 1rem; padding: 0; margin: 0; }
.site-nav a { color: var(--muted); text-decoration: none; padding: .5rem .75rem; border-radius: 6px; }
.site-nav a:hover, .site-nav a:focus { color: var(--text); background: var(--card); }

.nav-toggle { display: none; background: none; border: 0; padding: .5rem; cursor: pointer; }
.nav-toggle .bar { display: block; width: 22px; height: 2px; background: var(--text); margin: 5px 0; border-radius: 2px; }

/* Sections */
.section { padding: 72px 0; }
.section.alt { background: var(--bg-alt); }
.eyebrow { color: var(--brand-weak); letter-spacing: .18em; text-transform: uppercase; font-size: .8rem; margin: 0 0 .25rem; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5rem; }
.lead { color: var(--muted); font-size: 1.125rem; }
.sub-lead { color: var(--muted); font-size: 1rem; margin-top: .5rem; }
.separator { color: var(--muted); margin: 0 .5rem; }

.grid-2 { display: grid; grid-template-columns: 1fr; gap: 2rem; }
@media (min-width: 840px) { .grid-2 { grid-template-columns: 1.2fr .8fr; } }

.hero { padding-top: 96px; }
.hero-copy .actions { display: flex; gap: .75rem; margin-top: 1rem; }
.hero-copy .social-links { display: flex; gap: 1rem; margin-top: 1.5rem; }
.hero-copy .social-links a { color: var(--muted); text-decoration: none; font-size: .9rem; font-weight: 500; }
.hero-copy .social-links a:hover { color: var(--brand-weak); }
.hero-media { display: grid; place-items: center; }
.avatar { width: 180px; height: 180px; border-radius: 50%; background: radial-gradient(100% 100% at 70% 20%, var(--brand-weak), var(--brand)); display: grid; place-items: center; font-weight: 800; font-size: 2rem; color: #0b0c10; box-shadow: 0 10px 40px rgba(79,70,229,.35); }

.highlights { list-style: none; padding: 0; margin: 0; display: grid; gap: .5rem; }
.highlights li { background: var(--card); border: 1px solid var(--border); padding: .75rem .9rem; border-radius: 10px; }

/* Skills */
.skill-categories { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
.skill-category { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem; }
.skill-category h3 { font-size: 1rem; color: var(--brand-weak); margin-bottom: .75rem; }
.skill-category .tags { display: flex; flex-wrap: wrap; gap: .5rem; }
.skill-category .tags li { font-size: .85rem; }

.tags { list-style: none; display: flex; flex-wrap: wrap; gap: .5rem; padding: 0; }
.tags li { background: color-mix(in srgb, var(--brand) 18%, var(--card)); color: var(--text); border: 1px solid var(--border); padding: .45rem .6rem; border-radius: 999px; font-size: .9rem; }

/* Projects */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: clip; display: flex; flex-direction: column; }
.card-media { background: linear-gradient(135deg, color-mix(in srgb, var(--brand) 18%, #000), #121725); height: 140px; }
.card-body { padding: 1rem; display: grid; gap: .5rem; flex: 1; }
.card-body h3 { font-size: 1.05rem; }
.card-tags { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: .25rem; }
.card-tags span { background: color-mix(in srgb, var(--brand) 12%, var(--card)); color: var(--brand-weak); border: 1px solid var(--border); padding: .2rem .5rem; border-radius: 999px; font-size: .75rem; }
.card-actions { display: flex; gap: .5rem; margin-top: .5rem; }
.more-projects { text-align: center; color: var(--muted); margin-top: 1.5rem; font-size: .95rem; }
.more-projects a { color: var(--brand-weak); }

/* Contact */
.contact-links { display: flex; gap: .75rem; margin-top: 1rem; }
.contact-form { display: grid; gap: .75rem; background: var(--card); border: 1px solid var(--border); padding: 1rem; border-radius: var(--radius); }
.contact-form label { display: grid; gap: .35rem; color: var(--muted); font-size: .95rem; }
.contact-form input, .contact-form textarea { width: 100%; background: #0c0f16; color: var(--text); border: 1px solid var(--border); border-radius: 8px; padding: .6rem .7rem; }
.contact-form input:focus, .contact-form textarea:focus { outline: 2px solid color-mix(in srgb, var(--brand) 40%, transparent); outline-offset: 2px; }
.form-note { color: var(--muted); font-size: .85rem; margin: .25rem 0 0; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: .4rem; background: transparent; color: var(--text); border: 1px solid var(--border); border-radius: 999px; padding: .55rem .9rem; text-decoration: none; font-weight: 600; cursor: pointer; }
.btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn.small { padding: .4rem .7rem; font-size: .9rem; }
.btn:hover, .btn:focus { filter: brightness(1.1); }

.site-footer { border-top: 1px solid var(--border); padding: 24px 0; background: var(--bg); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.to-top { color: var(--muted); text-decoration: none; border: 1px solid var(--border); border-radius: 8px; padding: .25rem .5rem; }
.to-top:hover { color: var(--text); }

/* Mobile nav */
@media (max-width: 720px) {
  .nav-toggle { display: inline-block; }
  .site-nav { position: absolute; top: 64px; right: 0; left: 0; background: var(--bg); border-bottom: 1px solid var(--border); transform: translateY(-8px); opacity: 0; pointer-events: none; transition: opacity .2s ease, transform .2s ease; }
  .site-nav ul { flex-direction: column; padding: .5rem; }
  .site-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .hero-copy .social-links { flex-wrap: wrap; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .site-nav { transition: none; }
}