/* ============================================
   Anthony Hinojosa, Career Site
   Design System: Industrial Precision
   ============================================ */

:root {
  /* Paper / Ink (light mode default) */
  --paper: #F4F1EA;
  --paper-2: #EAE6DB;
  --paper-3: #DCD7C8;
  --ink: #0E0E10;
  --ink-2: #2A2A2D;
  --ink-3: #5A5A5F;
  --ink-4: #8C8A83;
  --rule: #C9C4B4;
  --rule-2: #B5AE9A;

  /* Single accent: signal orange (hi-vis / flare) */
  --signal: #C2441C;
  --signal-ink: #8A2F12;
  --signal-tint: oklch(0.94 0.04 45);

  /* Typography */
  --f-display: "Instrument Serif", "GT Sectra", Georgia, serif;
  --f-sans: "Inter", ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Scale */
  --fs-mono: 11px;
  --fs-mono-lg: 13px;
  --fs-body: 16px;
  --fs-lead: 19px;
  --fs-h3: 22px;
  --fs-h2: clamp(28px, 3.6vw, 48px);
  --fs-h1: clamp(48px, 9vw, 128px);

  /* Rhythm */
  --gutter: clamp(20px, 4vw, 40px);
  --maxw: 1280px;
  --nav-h: 64px;

  /* Borders / Shadows */
  --hair: 1px solid var(--rule);
  --hair-dark: 1px solid var(--ink);
  --shadow: 0 1px 0 rgba(14,14,16,0.04), 0 24px 48px -24px rgba(14,14,16,0.18);
}

/* Dark mode via body[data-theme="dark"] */
body[data-theme="dark"] {
  --paper: #0E0E10;
  --paper-2: #151518;
  --paper-3: #1E1E22;
  --ink: #F4F1EA;
  --ink-2: #DAD6CA;
  --ink-3: #9A968B;
  --ink-4: #6E6B62;
  --rule: #2A2A2D;
  --rule-2: #3A3A3F;
  --signal: #E86B3C;
  --signal-ink: #F59063;
  --signal-tint: oklch(0.28 0.08 45);
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--f-sans);
  font-size: var(--fs-body);
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv11";
  transition: background 0.2s ease, color 0.2s ease;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5 { margin: 0; font-weight: 400; letter-spacing: -0.01em; }

/* Paper grain, very subtle */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    radial-gradient(circle at 25% 20%, rgba(14,14,16,0.025) 0, transparent 60%),
    radial-gradient(circle at 80% 75%, rgba(14,14,16,0.02) 0, transparent 55%);
}
body[data-theme="dark"]::before {
  background-image:
    radial-gradient(circle at 25% 20%, rgba(244,241,234,0.03) 0, transparent 60%),
    radial-gradient(circle at 80% 75%, rgba(244,241,234,0.025) 0, transparent 55%);
}

/* Layout helpers */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
  position: relative;
  z-index: 1;
}

.rule { height: 0; border: 0; border-top: var(--hair); margin: 0; }
.rule-dark { height: 0; border: 0; border-top: var(--hair-dark); margin: 0; }

/* Type helpers */
.mono { font-family: var(--f-mono); font-size: var(--fs-mono); letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink-3); }
.mono-lg { font-family: var(--f-mono); font-size: var(--fs-mono-lg); letter-spacing: 0.02em; color: var(--ink-2); }
.serif { font-family: var(--f-display); font-weight: 400; letter-spacing: -0.02em; }
.num { font-variant-numeric: tabular-nums lining-nums; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.eyebrow::before {
  content: "";
  width: 8px; height: 8px;
  background: var(--signal);
  display: inline-block;
  border-radius: 1px;
}

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: saturate(1.1) blur(10px);
  -webkit-backdrop-filter: saturate(1.1) blur(10px);
  border-bottom: var(--hair);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--nav-h);
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.brand {
  display: flex; align-items: baseline; gap: 10px;
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.brand .dot {
  width: 8px; height: 8px; background: var(--signal);
  border-radius: 1px; transform: translateY(-1px);
  display: inline-block;
}
.brand strong { font-weight: 600; letter-spacing: 0.04em; }
.brand .slash { color: var(--ink-4); }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-link {
  padding: 8px 12px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
  border-radius: 3px;
  transition: color 0.15s, background 0.15s;
  position: relative;
}
.nav-link:hover { color: var(--ink); }
.nav-link[aria-current="page"] { color: var(--ink); }
.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 12px; right: 12px; bottom: 2px;
  height: 2px;
  background: var(--signal);
}
.nav-cta {
  margin-left: 12px;
  padding: 8px 14px;
  border: 1px solid var(--ink);
  color: var(--ink);
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: background 0.15s, color 0.15s;
}
.nav-cta:hover { background: var(--ink); color: var(--paper); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 20px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid transparent;
  transition: transform 0.15s, background 0.15s, color 0.15s, border-color 0.15s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn-primary:hover { background: var(--signal); border-color: var(--signal); color: #fff; }
.btn-secondary { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-secondary:hover { background: var(--ink); color: var(--paper); }
.btn-ghost { padding: 10px 0; border: 0; color: var(--ink); position: relative; }
.btn-ghost::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 4px;
  height: 1px; background: var(--signal); transition: right 0.2s;
}
.btn-ghost:hover::after { right: 0; }
.btn .arrow { transition: transform 0.15s; }
.btn:hover .arrow { transform: translateX(3px); }

/* Cards w/ crosshair corners */
.card {
  position: relative;
  background: var(--paper-2);
  border: var(--hair);
  padding: 32px;
  transition: border-color 0.15s, transform 0.15s;
}
.card.hov { cursor: pointer; }
.card.hov:hover { border-color: var(--ink); }
.card-head {
  display: flex; justify-content: space-between; align-items: flex-start;
  margin-bottom: 20px;
  gap: 16px;
}
.card-id {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-3);
}
.card h3 {
  font-family: var(--f-sans);
  font-size: var(--fs-h3);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.015em;
  margin-bottom: 12px;
}
.card p { color: var(--ink-2); font-size: 15px; line-height: 1.6; }
.card ul.bullets { margin-top: 16px; }
.card ul.bullets li {
  position: relative;
  padding-left: 20px;
  margin-top: 6px;
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.55;
}
.card ul.bullets li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 10px; height: 1px; background: var(--signal);
}

/* Crosshair corners (pure CSS) */
.crosshair { position: relative; }
.crosshair::before, .crosshair::after,
.crosshair > .ch-tr, .crosshair > .ch-bl, .crosshair > .ch-br {
  content: ""; position: absolute; width: 10px; height: 10px;
  border-color: var(--ink);
  pointer-events: none;
}
.crosshair::before { top: -1px; left: -1px; border-top: 1px solid; border-left: 1px solid; }
.crosshair::after  { top: -1px; right: -1px; border-top: 1px solid; border-right: 1px solid; }
.crosshair .ch-bl  { bottom: -1px; left: -1px; border-bottom: 1px solid; border-left: 1px solid; }
.crosshair .ch-br  { bottom: -1px; right: -1px; border-bottom: 1px solid; border-right: 1px solid; }

/* Tags */
.tag {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-2);
  background: var(--paper-3);
  border: 1px solid var(--rule);
  border-radius: 2px;
}
.tag.sig { color: var(--signal-ink); background: var(--signal-tint); border-color: color-mix(in srgb, var(--signal) 30%, transparent); }
body[data-theme="dark"] .tag.sig { color: var(--signal-ink); }

/* Page header */
.page-header { padding: 56px 0 48px; border-bottom: var(--hair); }
.page-header h1 {
  font-family: var(--f-display);
  font-size: clamp(48px, 7vw, 96px);
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin: 16px 0 24px;
}
.page-header .lede {
  max-width: 60ch;
  font-size: var(--fs-lead);
  line-height: 1.45;
  color: var(--ink-2);
}

/* Grid */
.grid { display: grid; gap: 20px; }
.g2 { grid-template-columns: 1fr; }
.g3 { grid-template-columns: 1fr; }
.g4 { grid-template-columns: 1fr; }
@media (min-width: 720px) {
  .g2 { grid-template-columns: repeat(2, 1fr); }
  .g3 { grid-template-columns: repeat(2, 1fr); }
  .g4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .g3 { grid-template-columns: repeat(3, 1fr); }
  .g4 { grid-template-columns: repeat(4, 1fr); }
}

/* Section */
.section { padding: 80px 0; position: relative; }
.section-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 48px;
  padding-bottom: 20px;
  border-bottom: var(--hair);
}
@media (min-width: 900px) {
  .section-head { grid-template-columns: minmax(240px, 1fr) 2fr; gap: 64px; align-items: end; }
}
.section-head h2 {
  font-family: var(--f-display);
  font-size: var(--fs-h2);
  line-height: 1;
  letter-spacing: -0.02em;
}
.section-head .lede { color: var(--ink-2); font-size: 17px; max-width: 60ch; }

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* Scroll-reveal for stat / project cards (IntersectionObserver adds .is-visible) */
.scroll-reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.scroll-reveal.is-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .scroll-reveal { opacity: 1; transform: none; transition: none; }
}

/* Footer */
.site-footer {
  border-top: var(--hair);
  padding: 64px 0 32px;
  margin-top: 48px;
  background: var(--paper-2);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}
@media (min-width: 720px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
}
.footer-grid h4 {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 16px;
}
.footer-grid a { display: block; padding: 6px 0; color: var(--ink-2); font-size: 14px; }
.footer-grid a:hover { color: var(--signal); }
.footer-bottom {
  margin-top: 56px;
  padding-top: 24px;
  border-top: var(--hair);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-name {
  font-family: var(--f-display);
  font-size: 56px;
  line-height: 0.9;
  letter-spacing: -0.03em;
  margin: 0;
}

/* Portrait placeholder */
.portrait {
  position: relative;
  aspect-ratio: 4/5;
  background: var(--ink);
  overflow: hidden;
  border: 1px solid var(--ink);
}
.portrait-mono {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  background-image:
    linear-gradient(135deg, var(--paper-3) 0%, var(--rule-2) 50%, var(--ink-3) 100%);
  filter: contrast(0.9) saturate(0.3);
}
.portrait-mono::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    repeating-linear-gradient(0deg, transparent 0, transparent 3px, rgba(14,14,16,0.04) 3px, rgba(14,14,16,0.04) 4px);
  mix-blend-mode: multiply;
}
.portrait .initials {
  font-family: var(--f-display);
  font-size: clamp(120px, 22vw, 220px);
  line-height: 0.8;
  color: var(--ink);
  opacity: 0.15;
  letter-spacing: -0.04em;
  z-index: 1;
  position: relative;
}
.portrait .meta {
  position: absolute;
  left: 16px; right: 16px; bottom: 16px;
  display: flex; justify-content: space-between;
  font-family: var(--f-mono);
  font-size: 10px;
  color: var(--paper);
  opacity: 0.85;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  mix-blend-mode: difference;
  z-index: 2;
}
.portrait .meta-tl {
  position: absolute; left: 16px; top: 16px;
  font-family: var(--f-mono); font-size: 10px;
  color: var(--paper); mix-blend-mode: difference;
  letter-spacing: 0.08em; text-transform: uppercase;
  z-index: 2;
}

/* Selection */
::selection { background: var(--signal); color: #fff; }

/* Focus */
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }

/* Skip link */
.skip { position: absolute; left: -9999px; top: auto; }
.skip:focus { left: 16px; top: 16px; z-index: 100; background: var(--ink); color: var(--paper); padding: 10px 16px; font-family: var(--f-mono); font-size: 12px; }