/* David Sapp — precision tech portfolio */
:root {
  --bg: #0A0B0D;
  --panel: #0E1013;
  --line: #22252B;
  --line-strong: #2E323A;
  --txt: #EDEEF0;
  --dim: #8B919C;
  --accent: #FF4D00;
  --mono: "JetBrains Mono", "SF Mono", Menlo, monospace;
  --grot: "Space Grotesk", "Inter", sans-serif;
  --sans: "Inter", "Helvetica Neue", Arial, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--txt);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  background-position: center top;
}
body::before {
  content: ""; position: fixed; inset: 0; pointer-events: none;
  background: radial-gradient(1200px 700px at 50% -10%, rgba(255,77,0,0.07), transparent 60%);
}
::selection { background: var(--accent); color: #000; }

.wrap { max-width: 1280px; margin: 0 auto; padding: 0 5vw; }

/* ---------- type ---------- */
.label {
  font-family: var(--mono);
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--dim);
}
.label--accent { color: var(--accent); }

a { color: var(--txt); text-decoration: none; }
p a, .foot-meta a, .contact-links a { border-bottom: 1px solid var(--line-strong); transition: border-color .2s, color .2s; }
p a:hover, .foot-meta a:hover, .contact-links a:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- nav ---------- */
nav {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0 5vw; height: 64px;
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 50;
  background: rgba(10,11,13,0.82); backdrop-filter: blur(12px);
}
nav .mark { font-family: var(--mono); font-size: 13px; letter-spacing: 0.08em; }
nav .mark .cursor { color: var(--accent); animation: blink 1.2s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
nav ul { display: flex; gap: 2px; list-style: none; }
nav ul a {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--dim); padding: 8px 14px; border: 1px solid transparent; transition: all .2s;
}
nav ul a:hover { color: var(--txt); border-color: var(--line-strong); background: var(--panel); }

/* ---------- hero ---------- */
header.hero { padding: 9vh 0 0; border-bottom: 1px solid var(--line); }
.hero-grid { border-left: 1px solid var(--line); border-right: 1px solid var(--line); max-width: 1280px; margin: 0 auto; padding: 0 5vw 7vh; background: rgba(10,11,13,0.55); }
.hero .label { display: block; margin-bottom: 34px; }
.hero h1 {
  font-family: var(--grot);
  font-weight: 500;
  font-size: clamp(44px, 7.6vw, 112px);
  line-height: 1.0;
  letter-spacing: -0.03em;
}
.hero h1 .accent { color: var(--accent); }
.hero h1 .dim { color: var(--dim); }
.hero .sub {
  margin-top: 42px; max-width: 540px;
  color: var(--dim); font-size: 16px;
}
.hero .sub b { color: var(--txt); font-weight: 500; }
.hero-meta {
  display: flex; gap: 0; margin-top: 5vh;
  border-top: 1px solid var(--line);
}
.hero-meta div { flex: 1; padding: 18px 20px 18px 0; border-right: 1px solid var(--line); }
.hero-meta div:last-child { border-right: none; }
.hero-meta div + div { padding-left: 20px; }
.hero-meta .k { font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--dim); display: block; margin-bottom: 6px; }
.hero-meta .v { font-size: 14px; }

/* ---------- sections ---------- */
section { position: relative; padding: 8vh 0 8vh; border-bottom: 1px solid var(--line); }
.sec-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 7vh; }
.sec-head .left { display: flex; align-items: baseline; gap: 16px; }
.sec-head .num { font-family: var(--mono); font-size: 12px; color: var(--accent); }
.sec-head h2 { font-family: var(--grot); font-weight: 500; font-size: clamp(26px, 3vw, 40px); letter-spacing: -0.02em; }
.sec-head .count { font-family: var(--mono); font-size: 11px; color: var(--dim); }

/* ---------- work rows ---------- */
.work-index { border: 1px solid var(--line); background: var(--panel); }
.work-row {
  display: grid; grid-template-columns: 70px 1fr auto; gap: 28px; align-items: start;
  padding: 38px 32px;
  border-bottom: 1px solid var(--line);
  transition: background .25s;
  position: relative;
}
.work-row:last-child { border-bottom: none; }
.work-row::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 2px;
  background: var(--accent); transform: scaleY(0); transform-origin: top;
  transition: transform .3s cubic-bezier(.2,.7,.2,1);
}
.work-row:hover { background: #12151A; }
.work-row:hover::before { transform: scaleY(1); }
.work-row .idx { font-family: var(--mono); font-size: 12px; color: var(--dim); padding-top: 10px; }
.work-row:hover .idx { color: var(--accent); }
.work-row h3 {
  font-family: var(--grot); font-weight: 500;
  font-size: clamp(24px, 3.2vw, 44px);
  letter-spacing: -0.02em; line-height: 1.1;
}
.work-row p { max-width: 560px; margin-top: 12px; color: var(--dim); font-size: 15px; }
.work-row .meta { text-align: right; padding-top: 10px; display: grid; gap: 6px; }
.work-row .arrow { font-family: var(--mono); color: var(--dim); font-size: 13px; transition: color .2s, transform .2s; display: inline-block; }
.work-row:hover .arrow { color: var(--accent); transform: translateX(5px); }

/* ---------- about ---------- */
.about-grid { display: grid; grid-template-columns: 1.35fr 1fr; gap: 64px; align-items: start; }
.bio .lede {
  font-family: var(--grot); font-weight: 500;
  font-size: clamp(22px, 2.4vw, 32px); line-height: 1.35; letter-spacing: -0.015em;
}
.bio .lede .accent { color: var(--accent); }
.bio p + p { margin-top: 1.5em; }
.bio > p { color: var(--dim); }
.bio > p b, .bio > p strong { color: var(--txt); font-weight: 500; }
.portrait { margin-top: 52px; width: min(340px, 85%); }
.portrait .frame { border: 1px solid var(--line-strong); padding: 10px; background: var(--panel); position: relative; }
.portrait .frame::before, .portrait .frame::after { content: ""; position: absolute; width: 22px; height: 22px; border: 2px solid var(--accent); }
.portrait .frame::before { top: -7px; left: -7px; border-right: none; border-bottom: none; }
.portrait .frame::after { bottom: -7px; right: -7px; border-left: none; border-top: none; }
.portrait img { width: 100%; display: block; filter: grayscale(1) contrast(1.08); transition: filter .45s ease; }
.portrait:hover img { filter: grayscale(0) contrast(1.02); }
.portrait figcaption { padding-top: 12px; }

.facts { border: 1px solid var(--line); background: var(--panel); }
.facts > div { padding: 24px 26px; border-bottom: 1px solid var(--line); }
.facts > div:last-child { border-bottom: none; }
.facts .label { display: block; margin-bottom: 14px; }
.facts ul { list-style: none; }
.facts li { padding: 7px 0; font-size: 14px; border-bottom: 1px dashed var(--line); display: flex; justify-content: space-between; }
.facts li:last-child { border-bottom: none; }
.facts li .tick { font-family: var(--mono); color: var(--accent); font-size: 11px; }

/* ---------- contact ---------- */
.contact-line {
  font-family: var(--grot); font-weight: 500;
  font-size: clamp(28px, 4.4vw, 62px); line-height: 1.15; letter-spacing: -0.02em;
  max-width: 950px;
}
.contact-line .accent { color: var(--accent); }
.contact-links { margin-top: 7vh; display: flex; gap: 2px; flex-wrap: wrap; }
.contact-links a {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase;
  border: 1px solid var(--line-strong); padding: 16px 28px;
  transition: all .2s;
}
.contact-links a:hover { border-color: var(--accent); color: var(--accent); background: rgba(255,77,0,0.06); }

/* ---------- footer ---------- */
footer { padding: 9vh 0 3vh; overflow: hidden; }
.wordmark {
  font-family: var(--grot); font-weight: 500;
  font-size: 13.4vw; line-height: 0.92; letter-spacing: -0.04em;
  white-space: nowrap; text-align: center;
  color: transparent; -webkit-text-stroke: 1px var(--line-strong);
}
.foot-meta { display: flex; justify-content: space-between; padding: 44px 5vw 0; flex-wrap: wrap; gap: 12px; }

/* ---------- case pages ---------- */
.case-hero { padding: 8vh 5vw 7vh; border-bottom: 1px solid var(--line); max-width: 1280px; margin: 0 auto; }
.case-hero h1 {
  font-family: var(--grot); font-weight: 500;
  font-size: clamp(38px, 6.4vw, 92px);
  line-height: 1.02; letter-spacing: -0.03em;
  margin-top: 26px; max-width: 15em;
}
.case-hero h1 .accent { color: var(--accent); }
.case-hero .dek { max-width: 600px; margin-top: 34px; color: var(--dim); }
.case-facts {
  display: grid; grid-template-columns: repeat(3, 1fr);
  margin-top: 5vh; border: 1px solid var(--line); background: var(--panel);
}
.case-facts > div { padding: 22px 24px; border-right: 1px solid var(--line); }
.case-facts > div:last-child { border-right: none; }
.case-facts .label { display: block; margin-bottom: 10px; }
.case-facts p { font-size: 14px; color: var(--txt); }
.cta-bar { margin-top: 6vh; }
.btn {
  display: inline-block;
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent); border: 1px solid var(--accent);
  padding: 15px 32px; transition: all .2s;
}
.btn:hover { background: var(--accent); color: #000; }
.btn .arrow { margin-left: 10px; }

article.case { padding: 2vh 0 10vh; max-width: 1280px; margin: 0 auto; }
article.case .prose { max-width: 680px; padding: 0 5vw; }
article.case h2 {
  font-family: var(--grot); font-weight: 500;
  font-size: clamp(26px, 3.2vw, 44px); letter-spacing: -0.02em; line-height: 1.12;
  margin: 8vh 0 4vh;
}
article.case h2 .idx { font-family: var(--mono); font-size: 12px; color: var(--accent); display: block; margin-bottom: 12px; letter-spacing: 0.14em; }
article.case p { color: var(--dim); }
article.case p + p { margin-top: 1.5em; }
article.case ol { margin: 1.5em 0 1.5em 0; list-style: none; counter-reset: step; }
article.case ol li {
  counter-increment: step; margin: 0; padding: 12px 0 12px 54px; position: relative;
  border-bottom: 1px dashed var(--line); color: var(--txt); font-size: 15px;
}
article.case ol li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute; left: 0; font-family: var(--mono); font-size: 11px; color: var(--accent); top: 15px;
}
figure.shot { margin: 5vh 5vw; border: 1px solid var(--line-strong); background: var(--panel); padding: 12px; }
figure.shot img { width: 100%; display: block; }
figure.shot figcaption { padding-top: 12px; display: flex; gap: 14px; }
figure.shot figcaption .fig { color: var(--accent); }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .55s ease, transform .55s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ---------- responsive ---------- */
@media (max-width: 880px) {
  nav ul a { padding: 8px 9px; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .case-facts { grid-template-columns: 1fr; }
  .case-facts > div { border-right: none; border-bottom: 1px solid var(--line); }
  .work-row { grid-template-columns: 1fr; gap: 10px; padding: 28px 20px; }
  .work-row .meta { text-align: left; }
  .hero-meta { flex-direction: column; }
  .hero-meta div { border-right: none; border-bottom: 1px solid var(--line); padding-left: 0; }
}