/* ============================================================
   Katherine Feemster — CAD Portfolio
   Minimal, editorial layout with a warm-teal accent pulled
   from the rendered part images.
   ============================================================ */

:root {
  --bg:        #FBFAF7;
  --bg-2:      #F2EFE8;
  --ink:       #0F1A1F;
  --ink-2:     #3B4A52;
  --mute:      #6B7A82;
  --line:      #E3DED3;
  --accent:    #2E7A7B;   /* teal from the OpenSCAD renders */
  --accent-2:  #1F5A5B;
  --amber:     #D9A441;   /* counterbore yellow */
  --dark:      #0F1A1F;
  --dark-ink:  #F2EFE8;

  --radius: 14px;
  --radius-lg: 22px;
  --shadow: 0 1px 2px rgba(15,26,31,.04), 0 10px 30px rgba(15,26,31,.06);
  --shadow-lg: 0 2px 4px rgba(15,26,31,.05), 0 24px 60px rgba(15,26,31,.10);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: var(--accent-2); text-decoration: none; }
a:hover { color: var(--ink); }
code { font-family: 'JetBrains Mono', ui-monospace, Menlo, Consolas, monospace;
       font-size: 0.92em; background: var(--bg-2); padding: 1px 6px; border-radius: 6px; }
pre { margin: 0; }
pre code { display: block; background: #0F1A1F; color: #E7EAEC;
           padding: 16px 18px; border-radius: 10px; overflow-x: auto; font-size: 14px;
           line-height: 1.55; }

.wrap { max-width: 1160px; margin: 0 auto; padding: 0 28px; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(251,250,247,0.85);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between;
             height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700;
         color: var(--ink); letter-spacing: -0.01em; }
.brand-mark { display: inline-grid; place-items: center; width: 28px; height: 28px;
              border-radius: 8px; background: var(--accent); color: #fff;
              font-size: 16px; }
.nav nav { display: flex; align-items: center; gap: 22px; }
.nav nav a { color: var(--ink-2); font-weight: 500; font-size: 15px; }
.nav nav a:hover { color: var(--ink); }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; gap: 8px;
       padding: 10px 18px; border-radius: 999px; font-weight: 600; font-size: 15px;
       border: 1px solid transparent; transition: transform .12s ease, background .2s, color .2s; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: var(--accent-2); color: #fff; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { background: var(--bg-2); color: var(--ink); }
.btn-outline { background: transparent; color: var(--ink);
               border-color: var(--ink); padding: 7px 14px; font-size: 14px; }
.btn-outline:hover { background: var(--ink); color: #fff; }

/* ---------- Hero ---------- */
.hero { padding: 80px 0 40px; }
.hero-inner { display: grid; grid-template-columns: 1.15fr 1fr; gap: 56px;
              align-items: center; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.14em; font-size: 12px;
           color: var(--accent-2); font-weight: 600; margin: 0 0 16px; }
.hero h1 { font-size: clamp(36px, 4.6vw, 60px); line-height: 1.05;
           letter-spacing: -0.02em; margin: 0 0 22px; font-weight: 800; }
.accent { color: var(--accent); }
.lede { font-size: 18px; color: var(--ink-2); margin: 0 0 28px; max-width: 52ch; }
.lede b { color: var(--ink); font-weight: 600; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }

.hero-art { margin: 0; background: var(--bg-2); border-radius: var(--radius-lg);
            padding: 28px; box-shadow: var(--shadow-lg); }
.hero-art img { border-radius: var(--radius); }
.hero-art figcaption { margin-top: 14px; color: var(--mute); font-size: 13px;
                       text-align: center; }

/* ---------- Tool strip ---------- */
.strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
         background: var(--bg-2); }
.strip-inner { display: flex; flex-wrap: wrap; gap: 8px 36px; justify-content: center;
               padding: 22px 28px; color: var(--ink-2); font-size: 14px;
               font-weight: 500; }
.strip-inner span { position: relative; }
.strip-inner span:not(:last-child)::after { content: "·"; position: absolute;
        right: -20px; color: var(--mute); }

/* ---------- Sections ---------- */
.section { padding: 96px 0; }
.section h2 { font-size: clamp(28px, 3.2vw, 40px); letter-spacing: -0.02em;
              margin: 0 0 16px; font-weight: 700; }
.section-lede { color: var(--ink-2); font-size: 17px; max-width: 64ch; margin: 0 0 48px; }

.dark { background: var(--dark); color: var(--dark-ink); }
.dark h2 { color: #fff; }
.dark .section-lede { color: #B8BFC4; }

/* ---------- Cards ---------- */
.cards { display: grid; gap: 28px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
        overflow: hidden; box-shadow: var(--shadow); }
.card-body { padding: 28px; }
.card h3 { margin: 8px 0 10px; font-size: 22px; letter-spacing: -0.01em; }
.card p { color: var(--ink-2); margin: 0 0 12px; }
.tag { text-transform: uppercase; letter-spacing: 0.12em; font-size: 11px;
       color: var(--accent-2); font-weight: 700; margin: 0; }
.link { font-weight: 600; }
.link:hover { text-decoration: underline; }
.meta { font-size: 13px; color: var(--mute); }
.meta code { background: var(--bg-2); }

.feature { display: grid; grid-template-columns: 1.1fr 1fr; }
.feature.reverse { grid-template-columns: 1fr 1.1fr; }
.feature.reverse .card-media { order: 2; }
.card-media { background: linear-gradient(180deg, #EFEBDE, #F2EFE8);
              display: grid; place-items: center; padding: 28px; min-height: 340px; }
.card-media.dual { grid-template-columns: 1fr 1fr; gap: 18px; padding: 22px; }
.card-media img { border-radius: 12px; box-shadow: 0 6px 18px rgba(15,26,31,.10);
                  max-height: 360px; object-fit: contain; background: #FBFAF7; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-3 .card { display: flex; flex-direction: column; }
.accent-card { background: linear-gradient(180deg, #EAF3F3, #fff);
               border-color: #CFE2E2; }

/* ---------- Code section ---------- */
.code-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.code-card { background: #172227; border: 1px solid #253137; border-radius: 16px;
             padding: 22px; }
.code-card h4 { margin: 0 0 14px; color: #fff; font-size: 16px; }
.code-card p { margin: 14px 0 0; color: #B8BFC4; font-size: 14px; }
.code-card code { color: #E7EAEC; background: transparent; }

/* ---------- Stack ---------- */
.stack-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.stack-grid div { background: #fff; border: 1px solid var(--line);
                  border-radius: var(--radius); padding: 22px; }
.stack-grid h4 { margin: 0 0 8px; font-size: 15px; color: var(--ink); }
.stack-grid p { margin: 0; color: var(--ink-2); font-size: 15px; }

/* ---------- About ---------- */
.about-inner { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px;
               align-items: start; }
.side-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
             padding: 28px; box-shadow: var(--shadow); }
.side-card h4 { margin: 0 0 12px; font-size: 14px; text-transform: uppercase;
                letter-spacing: 0.12em; color: var(--accent-2); }
.side-card ul { margin: 0; padding-left: 20px; color: var(--ink-2); }
.side-card li { margin-bottom: 8px; }

/* ---------- Footer ---------- */
.foot { border-top: 1px solid var(--line); background: var(--bg-2); }
.foot-inner { display: flex; align-items: center; justify-content: space-between;
              padding: 22px 28px; color: var(--mute); font-size: 14px; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero-inner, .feature, .feature.reverse { grid-template-columns: 1fr; }
  .feature.reverse .card-media { order: 0; }
  .grid-3, .stack-grid, .code-grid { grid-template-columns: 1fr 1fr; }
  .about-inner { grid-template-columns: 1fr; }
  .nav nav a:not(.btn) { display: none; }
}
@media (max-width: 640px) {
  .grid-3, .stack-grid, .code-grid { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
  .hero { padding: 48px 0 24px; }
  .card-media.dual { grid-template-columns: 1fr; }
}