/* ============================================================
   David Balchunas - portfolio (multi-page)
   Warm near-black editorial. Serif display, mono accents,
   motley palette (gold / crimson / teal / violet).
   ============================================================ */
:root {
  --ink: #17130f;
  --ink-2: #1f1a15;
  --paper: #ece5d8;
  --paper-dim: #b7ac99;
  --gold: #d9a441;
  --crimson: #c1503a;
  --teal: #3d8578;
  --violet: #8a6fc2;
  --hairline: rgba(236, 229, 216, 0.14);
  --serif: "Fraunces", "Georgia", serif;
  --body: "Newsreader", "Georgia", serif;
  --mono: "IBM Plex Mono", "Courier New", monospace;
  --max: 1080px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--body);
  font-size: 1.125rem;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--gold); color: var(--ink); }

.grain {
  position: fixed; inset: -50%; z-index: 1; pointer-events: none; opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 7s steps(8) infinite;
}
@keyframes grain {
  0%, 100% { transform: translate(0, 0); }
  25% { transform: translate(-3%, 2%); }
  50% { transform: translate(2%, -3%); }
  75% { transform: translate(-2%, -2%); }
}
main, .nav, .footer { position: relative; z-index: 2; }

.mono { font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.08em; }
.kicker { color: var(--gold); margin-bottom: 2.5rem; }
h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-variation-settings: "opsz" 90, "SOFT" 0, "WONK" 1;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

/* ---------- nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.1rem 2rem;
  background: linear-gradient(to bottom, rgba(23,19,15,0.9), rgba(23,19,15,0));
  z-index: 10;
}
.nav__mark {
  font-family: var(--serif); font-weight: 700; font-size: 1.3rem;
  color: var(--paper); text-decoration: none; letter-spacing: 0.02em;
}
.nav__mark:hover { color: var(--gold); }
.nav__diamond { color: var(--gold); font-size: 0.6em; vertical-align: 0.25em; margin-left: 2px; }
.nav__links { display: flex; gap: 1.6rem; align-items: center; }
.nav__links a {
  font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.08em;
  color: var(--paper-dim); text-decoration: none; transition: color 0.25s;
}
.nav__links a:hover, .nav__links a[aria-current="page"] { color: var(--paper); }
.nav__links a[aria-current="page"] { color: var(--gold); }
.nav__cta {
  color: var(--gold) !important;
  border: 1px solid rgba(217, 164, 65, 0.4);
  padding: 0.45rem 0.9rem; border-radius: 999px;
  transition: border-color 0.25s, background 0.25s;
}
.nav__cta:hover { border-color: var(--gold); background: rgba(217, 164, 65, 0.08); }

/* ---------- page head (non-index pages) ---------- */
.page-head { padding: 10rem 2rem 3rem; max-width: var(--max); margin: 0 auto; }
.page-head h1 {
  font-family: var(--serif);
  font-variation-settings: "opsz" 144, "SOFT" 0, "WONK" 1;
  font-weight: 600;
  font-size: clamp(2.4rem, 7vw, 4.6rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.page-head .sub { color: var(--paper-dim); max-width: 36rem; margin-top: 1.4rem; font-size: 1.2rem; }

section { padding: 4rem 2rem; max-width: var(--max); margin: 0 auto; }

/* ---------- footer ---------- */
.footer {
  display: flex; justify-content: space-between; align-items: center;
  padding: 2rem; border-top: 1px solid var(--hairline);
  color: var(--paper-dim); max-width: var(--max); margin: 0 auto 0;
}
.footer__diamonds { color: var(--gold); letter-spacing: 0.4em; font-size: 0.6rem; }

/* ---------- reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
.hero .reveal { transition-delay: calc(var(--i, 0) * 120ms); }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .grain { animation: none; }
  html { scroll-behavior: auto; }
}
@media (max-width: 720px) {
  .nav__links a:not(.nav__cta) { display: none; }
  section, .page-head { padding-left: 1.4rem; padding-right: 1.4rem; }
}