/* SUPERTECHGUY — site styles */

:root {
  --bg: #0b0f14;
  --bg-alt: #10161d;
  --surface: #151c25;
  --surface-2: #1b2430;
  --border: #253041;
  --text: #e7ebf0;
  --muted: #9aa6b5;
  --accent: #e8743b;        /* red-rock sandstone */
  --accent-hover: #f08a55;
  --accent-soft: rgba(232, 116, 59, 0.12);
  --ok: #4fb88a;
  --radius: 12px;
  --max: 1160px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

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

h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 0.6em; letter-spacing: -0.015em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); font-weight: 750; }
h3 { font-size: 1.2rem; font-weight: 700; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 20px; }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.9rem;
  display: inline-block;
}
.eyebrow::before { content: "> "; color: var(--muted); }

.lead { font-size: 1.2rem; color: var(--muted); max-width: 46rem; }
.muted { color: var(--muted); }

.skip-link { position: absolute; left: -999px; top: 0; }
.skip-link:focus { left: 12px; top: 12px; z-index: 100; background: var(--accent); color: #111; padding: 8px 14px; border-radius: 6px; }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 15, 20, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 68px; }

.brand { display: flex; align-items: center; gap: 10px; }
.brand img.mark { width: 34px; height: 30px; }
.brand img.word { width: 170px; height: auto; }
.brand:hover { text-decoration: none; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 8px 12px;
  border-radius: 8px;
}
.nav a:hover { color: var(--text); background: var(--surface); text-decoration: none; }
.nav a[aria-current="page"] { color: var(--text); }
.nav a.btn { margin-left: 8px; color: #111; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  width: 42px;
  height: 42px;
  cursor: pointer;
}
.nav-toggle { font-size: 18px; }

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 12px 20px 20px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
  }
  .nav.open { display: flex; }
  .nav a { padding: 12px; }
  .nav a.btn { margin: 8px 0 0; text-align: center; }
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #111;
  font-weight: 650;
  padding: 12px 22px;
  border-radius: 10px;
  border: 1px solid var(--accent);
  transition: background 0.15s, border-color 0.15s;
}
.btn:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #111; text-decoration: none; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: var(--surface); border-color: var(--muted); color: var(--text); }
.nav a.btn { padding: 8px 16px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 1.8rem; }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  padding: 110px 0 100px;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(ellipse 60% 70% at 85% 30%, rgba(232, 116, 59, 0.14), transparent 70%),
    linear-gradient(var(--bg), var(--bg-alt));
}
.hero::before {
  /* faint network grid */
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse at 70% 40%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 70% 40%, #000 20%, transparent 75%);
  pointer-events: none;
}
.hero .container { position: relative; display: grid; grid-template-columns: 1.3fr 1fr; gap: 40px; align-items: center; }
.hero h1 span { color: var(--accent); }
.hero-mark { justify-self: end; width: 100%; max-width: 400px; opacity: 0.9; filter: drop-shadow(0 20px 50px rgba(0,0,0,0.6)); }

.page-hero { padding: 80px 0 60px; }
.page-hero .container { display: block; }

@media (max-width: 860px) {
  .hero { padding: 70px 0 60px; }
  .hero .container { grid-template-columns: 1fr; }
  .hero-mark { display: none; }
}

/* ---------- Sections ---------- */

.section { padding: 90px 0; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { max-width: 46rem; margin-bottom: 48px; }

.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 980px) { .grid-4, .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; } }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.15s, transform 0.15s;
}
a.card { color: var(--text); display: block; }
a.card:hover { border-color: var(--accent); text-decoration: none; transform: translateY(-2px); }
.card p:last-child, .card ul:last-child { margin-bottom: 0; }
.icon {
  font-size: 20px;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 18px;
}
.card .more { color: var(--accent); font-weight: 600; font-size: 0.95rem; }

.checklist { list-style: none; padding: 0; margin: 0 0 1em; }
.checklist li { position: relative; padding-left: 26px; margin-bottom: 0.45em; color: var(--muted); }
.checklist li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.6em;
  width: 12px;
  height: 7px;
  border-left: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(-45deg);
}

/* ---------- Service detail ---------- */

.service {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 48px;
  padding: 56px 0;
  border-top: 1px solid var(--border);
  scroll-margin-top: 80px;
}
.service:first-of-type { border-top: 0; padding-top: 0; }
@media (max-width: 860px) { .service { grid-template-columns: 1fr; gap: 16px; } }

/* ---------- Stats / proof ---------- */

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat { border-left: 2px solid var(--accent); padding-left: 18px; }
.stat strong { display: block; font-size: 2rem; font-weight: 800; line-height: 1.1; }
.stat span { color: var(--muted); font-size: 0.95rem; }
@media (max-width: 860px) { .stats { grid-template-columns: repeat(2, 1fr); } .stat strong { font-size: 1.5rem; } }

.pills { display: flex; flex-wrap: wrap; gap: 10px; }
.pill {
  font-family: var(--mono);
  font-size: 0.88rem;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
}

/* ---------- Split / about ---------- */

.split { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; align-items: center; }
.split img.photo { border-radius: var(--radius); border: 1px solid var(--border); aspect-ratio: 4 / 5; object-fit: cover; object-position: 50% 30%; width: 100%; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; gap: 32px; } }

/* ---------- Talks ---------- */

.talks { list-style: none; padding: 0; margin: 0; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.talks li { display: grid; grid-template-columns: 64px 150px 1fr auto; gap: 16px; align-items: center; padding: 14px 20px; border-top: 1px solid var(--border); background: var(--surface); }
.talks li:first-child { border-top: 0; }
.talks li:hover { background: var(--surface-2); }
.talks .year { font-family: var(--mono); color: var(--muted); }
.talks .venue { font-family: var(--mono); font-size: 0.8rem; color: var(--accent); text-transform: uppercase; letter-spacing: 0.06em; }
.talks a { color: var(--text); font-weight: 550; }
.talks .tag { font-size: 0.75rem; font-family: var(--mono); color: var(--muted); border: 1px solid var(--border); padding: 2px 8px; border-radius: 999px; }
@media (max-width: 700px) {
  .talks li { grid-template-columns: 1fr auto; gap: 4px 12px; }
  .talks .year { grid-column: 1; }
  .talks .venue { grid-column: 2; justify-self: end; }
  .talks a { grid-column: 1 / -1; }
  .talks .tag { grid-column: 1 / -1; justify-self: start; }
}

/* ---------- CTA ---------- */

.cta {
  background:
    radial-gradient(ellipse 70% 120% at 100% 0%, rgba(232, 116, 59, 0.18), transparent 60%),
    var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 56px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
  align-items: center;
}
.cta h2 { margin-bottom: 0.4em; }
.cta .btn-row { margin-top: 0; justify-content: flex-end; }
@media (max-width: 860px) {
  .cta { grid-template-columns: 1fr; padding: 32px 24px; }
  .cta .btn-row { justify-content: flex-start; }
}

.contact-line { display: flex; align-items: center; gap: 14px; font-size: 1.15rem; margin-bottom: 14px; }
.contact-line i { width: 22px; text-align: center; color: var(--accent); flex: none; }
.contact-line a { color: var(--text); font-weight: 600; }

/* ---------- Article (project pages) ---------- */

.prose { max-width: 46rem; }
.prose ul { padding-left: 1.2em; color: var(--muted); }
.prose ul a { color: var(--text); }
.prose li { margin-bottom: 0.3em; }
.gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 32px 0; }
.gallery img { border-radius: 10px; border: 1px solid var(--border); width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
@media (max-width: 640px) { .gallery { grid-template-columns: 1fr; } }

/* ---------- Footer ---------- */

.site-footer { border-top: 1px solid var(--border); padding: 48px 0 36px; background: var(--bg); }
.site-footer .container { display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; align-items: center; }
.site-footer p { margin: 0; color: var(--muted); font-size: 0.92rem; }
.social { display: flex; gap: 8px; }
.social a {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  color: var(--muted);
}
.social a:hover { color: var(--accent); border-color: var(--accent); }
.social a { font-size: 17px; }
.social a:hover { text-decoration: none; }