/* Caleb Andersen — portfolio
   Index-of-shipped-work direction. Cool engineering paper, near-monochrome + pine accent.
   Display: Bricolage Grotesque · Body: Newsreader · Utility/data: IBM Plex Mono */

:root {
  --paper: #e8ebe6;
  --paper-raised: #f1f3ef;
  --ink: #15181a;
  --ink-soft: #3c4347;
  --muted: #5a615d;
  --line: #cbd0c8;
  --line-strong: #aab1a7;
  --accent: #134e3c;
  --accent-deep: #0c3528;
  --accent-wash: rgba(19, 78, 60, 0.08);

  /* calibration step-wedge ramp (light -> dark pine) */
  --step-1: #cdd6cd;
  --step-2: #9db3a6;
  --step-3: #5f8674;
  --step-4: #2f6450;
  --step-5: #134e3c;

  --display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --body: "Newsreader", Georgia, "Times New Roman", serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --wrap: 1100px;
  --pad: clamp(20px, 5vw, 72px);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 18px;
  line-height: 1.6;
  font-feature-settings: "kern" 1;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

/* faint engineering-paper grid, very subtle */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 96px 96px;
  opacity: 0.22;
  mask-image: radial-gradient(1200px 700px at 80% -5%, #000 0%, transparent 75%);
}

.page { position: relative; z-index: 1; }

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

::selection { background: var(--accent); color: var(--paper); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 10px 16px;
  z-index: 100;
  font-family: var(--mono);
  font-size: 13px;
}
.skip:focus { left: 12px; top: 12px; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

/* ---------- eyebrow / labels ---------- */
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0;
}
.eyebrow b { color: var(--accent); font-weight: 600; }

/* ---------- header ---------- */
.site-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 28px;
  padding-bottom: 28px;
  flex-wrap: wrap;
}

.mark { display: flex; align-items: baseline; gap: 14px; }
.mark .name {
  font-family: var(--display);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.01em;
  line-height: 1;
}
.mark .reg {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.02em;
}
.site-nav a { color: var(--ink-soft); position: relative; padding: 4px 0; }
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: -1px;
  height: 1.5px;
  background: var(--accent);
  transition: right 0.25s ease;
}
.site-nav a:hover { color: var(--ink); }
.site-nav a:hover::after { right: 0; }
.site-nav .cv { color: var(--accent); }

.rule { height: 1px; background: var(--line-strong); border: 0; margin: 0; }

/* ---------- hero ---------- */
.hero { padding-top: clamp(48px, 9vw, 110px); padding-bottom: clamp(40px, 7vw, 80px); }

.hero h1 {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(38px, 6.4vw, 82px);
  line-height: 0.98;
  letter-spacing: -0.025em;
  margin: 22px 0 0;
  max-width: 16ch;
}
.hero h1 em {
  font-style: normal;
  color: var(--accent);
}

.hero-lede {
  margin: 30px 0 0;
  font-size: clamp(18px, 2.1vw, 22px);
  line-height: 1.55;
  max-width: 60ch;
  color: var(--ink-soft);
}
.hero-lede a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: var(--line-strong);
}
.hero-lede a:hover { text-decoration-color: var(--accent); }

.hero-cta {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px 28px;
  align-items: center;
  font-family: var(--mono);
  font-size: 13px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 20px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  transition: transform 0.18s ease, background 0.18s ease;
}
.btn:hover { transform: translateY(-2px); background: var(--accent); border-color: var(--accent); }
.btn .arr { transition: transform 0.18s ease; }
.btn:hover .arr { transform: translate(3px, -3px); }

.link-inline {
  color: var(--ink-soft);
  text-decoration: underline;
  text-decoration-color: var(--line-strong);
  text-underline-offset: 3px;
}
.link-inline:hover { color: var(--accent); text-decoration-color: var(--accent); }

/* ---------- calibration step-wedge (signature) ---------- */
.wedge {
  margin-top: clamp(48px, 8vw, 90px);
}
.wedge-cap {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 14px;
}
.wedge-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  height: 14px;
  border: 1px solid var(--line-strong);
  overflow: hidden;
}
.wedge-strip span { display: block; transform-origin: left center; }
.wedge-strip span:nth-child(1) { background: var(--step-1); }
.wedge-strip span:nth-child(2) { background: var(--step-2); }
.wedge-strip span:nth-child(3) { background: var(--step-3); }
.wedge-strip span:nth-child(4) { background: var(--step-4); }
.wedge-strip span:nth-child(5) { background: var(--step-5); }

/* ---------- section scaffolding ---------- */
.section { padding-top: clamp(60px, 9vw, 120px); }
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 14px;
  margin-bottom: 8px;
}
.section-head h2 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: -0.015em;
  margin: 0;
}
.section-head .idx { font-family: var(--mono); font-size: 13px; color: var(--muted); }

/* ---------- work index ---------- */
.work-list { display: block; }
.entry {
  display: grid;
  grid-template-columns: 40px 1fr auto;
  gap: 0 28px;
  align-items: start;
  padding: 34px 8px 34px 0;
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: padding-left 0.25s ease;
}
.entry:hover { padding-left: 14px; }
.entry:hover .entry-title { color: var(--accent); }

.entry-num {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  padding-top: 6px;
}
.entry-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 12px;
}
.entry-chip .sw {
  width: 13px; height: 13px;
  border: 1px solid var(--line-strong);
}
.entry-title {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 0;
  transition: color 0.2s ease;
}
.entry-what {
  margin: 12px 0 0;
  max-width: 56ch;
  color: var(--ink-soft);
  font-size: 18px;
}
.entry-meta {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
}
.tag {
  border: 1px solid var(--line-strong);
  padding: 4px 9px;
  color: var(--ink-soft);
}
.entry-side {
  text-align: right;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 16px;
  padding-top: 6px;
}
.metric { line-height: 1.05; }
.metric b {
  display: block;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(30px, 4vw, 46px);
  letter-spacing: -0.03em;
  color: var(--ink);
}
.metric span {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.entry-go {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  display: inline-flex;
  gap: 8px;
  align-items: center;
}
.entry-go .arr { transition: transform 0.2s ease; }
.entry:hover .entry-go .arr { transform: translateX(4px); }

/* ---------- approach ---------- */
.approach-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 2px;
  margin-top: 36px;
  background: var(--line);
  border: 1px solid var(--line);
}
.principle {
  background: var(--paper);
  padding: 28px 26px;
}
.principle .n {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.12em;
}
.principle h3 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.01em;
  margin: 14px 0 10px;
}
.principle p { margin: 0; font-size: 16px; color: var(--ink-soft); line-height: 1.55; }

.belief {
  margin: 44px 0 0;
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.25;
  letter-spacing: -0.02em;
  max-width: 24ch;
}
.belief .by {
  display: block;
  margin-top: 16px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 400;
}

/* ---------- contact ---------- */
.contact-line {
  margin: 36px 0 0;
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(28px, 5vw, 56px);
  letter-spacing: -0.02em;
  line-height: 1.05;
}
.contact-line a { border-bottom: 2px solid var(--line-strong); }
.contact-line a:hover { color: var(--accent); border-color: var(--accent); }

.contact-links {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  border-top: 1px solid var(--line-strong);
}
.contact-links a {
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  padding: 22px 4px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: background 0.18s ease;
}
.contact-links a:hover { background: var(--paper-raised); }
.contact-links .k {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.contact-links .v {
  font-family: var(--display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.01em;
}
.contact-links a:hover .v { color: var(--accent); }

/* ---------- footer ---------- */
.site-foot {
  margin-top: clamp(70px, 10vw, 130px);
  padding-top: 26px;
  padding-bottom: 40px;
  border-top: 1px solid var(--line-strong);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

/* ============ CASE STUDY PAGES ============ */
.backlink {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-soft);
  display: inline-flex;
  gap: 9px;
  align-items: center;
}
.backlink:hover { color: var(--accent); }
.backlink .arr { transition: transform 0.2s ease; }
.backlink:hover .arr { transform: translateX(-4px); }

.case-head { padding-top: clamp(40px, 7vw, 80px); }
.case-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.case-chip .sw { width: 14px; height: 14px; border: 1px solid var(--line-strong); }
.case-head h1 {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(40px, 7vw, 76px);
  line-height: 0.98;
  letter-spacing: -0.03em;
  margin: 20px 0 0;
}
.case-tagline {
  margin: 22px 0 0;
  font-size: clamp(19px, 2.3vw, 24px);
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 60ch;
}

.spec {
  margin: 40px 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  border: 1px solid var(--line-strong);
}
.spec div {
  padding: 18px 20px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.spec dt {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}
.spec dd {
  margin: 0;
  font-family: var(--display);
  font-weight: 600;
  font-size: 16px;
  line-height: 1.3;
}
.spec dd a { color: var(--accent); border-bottom: 1px solid var(--accent); }

.case-body { max-width: 70ch; }
.case-body .block { padding-top: clamp(48px, 7vw, 84px); }
.case-body h2 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: -0.015em;
  margin: 0 0 6px;
  display: flex;
  align-items: baseline;
  gap: 14px;
}
.case-body h2 .n {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.1em;
}
.case-body p { margin: 18px 0 0; }
.case-body p:first-of-type { margin-top: 18px; }
.case-body strong { font-weight: 600; }
.case-body em { color: var(--accent); font-style: italic; }

.decision-list { margin: 22px 0 0; padding: 0; list-style: none; }
.decision-list li {
  padding: 22px 0;
  border-top: 1px solid var(--line);
}
.decision-list li:last-child { border-bottom: 1px solid var(--line); }
.decision-list h3 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
}
.decision-list .tradeoff {
  margin: 10px 0 0;
  font-size: 16px;
  color: var(--muted);
}
.decision-list .tradeoff b {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-right: 8px;
}

.outcome-grid {
  margin: 26px 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 28px;
}
.outcome-grid .metric b { font-size: clamp(28px, 4vw, 40px); }

.case-next {
  margin-top: clamp(60px, 9vw, 110px);
  border-top: 1px solid var(--line-strong);
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 20px;
  flex-wrap: wrap;
}
.case-next .nxt {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: -0.015em;
}
.case-next .nxt a:hover { color: var(--accent); }

/* code-ish inline */
code, .kbd {
  font-family: var(--mono);
  font-size: 0.86em;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  padding: 1px 6px;
}

/* ---------- load motion (one orchestrated moment) ---------- */
@media (prefers-reduced-motion: no-preference) {
  .anim-up { opacity: 0; transform: translateY(16px); animation: up 0.7s cubic-bezier(.2,.7,.2,1) forwards; }
  .anim-up.d1 { animation-delay: 0.05s; }
  .anim-up.d2 { animation-delay: 0.14s; }
  .anim-up.d3 { animation-delay: 0.23s; }
  .anim-up.d4 { animation-delay: 0.32s; }
  @keyframes up { to { opacity: 1; transform: none; } }

  .wedge-strip span { transform: scaleX(0); animation: cal 0.55s cubic-bezier(.4,0,.1,1) forwards; }
  .wedge-strip span:nth-child(1) { animation-delay: 0.35s; }
  .wedge-strip span:nth-child(2) { animation-delay: 0.45s; }
  .wedge-strip span:nth-child(3) { animation-delay: 0.55s; }
  .wedge-strip span:nth-child(4) { animation-delay: 0.65s; }
  .wedge-strip span:nth-child(5) { animation-delay: 0.75s; }
  @keyframes cal { to { transform: scaleX(1); } }
}

/* ---------- responsive ---------- */
@media (max-width: 760px) {
  body { font-size: 17px; }
  .site-nav { gap: 18px; font-size: 12px; }
  .site-nav .hide-sm { display: none; }
  .entry {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .entry-num { display: none; }
  .entry-side {
    align-items: flex-start;
    text-align: left;
    flex-direction: row;
    justify-content: space-between;
    width: 100%;
    margin-top: 18px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
  }
  .entry:hover { padding-left: 0; }
}

@media (max-width: 460px) {
  .mark { flex-direction: column; gap: 4px; }
  .hero-cta { gap: 12px; }
  .btn { width: 100%; justify-content: center; }
}