/* ─────────────── Diego Vallejos — Portfolio
   Editorial-minimal. Plain CSS, no frameworks.
   ─────────────── */

:root{
  --bg: oklch(0.985 0.004 95);
  --bg-2: oklch(0.96 0.006 95);
  --ink: oklch(0.18 0.01 260);
  --ink-2: oklch(0.38 0.01 260);
  --ink-3: oklch(0.58 0.01 260);
  --line: oklch(0.88 0.006 260);
  --line-2: oklch(0.92 0.005 260);
  --accent: oklch(0.52 0.13 248);
  --accent-soft: oklch(0.92 0.03 248);
  --ok: oklch(0.65 0.13 155);
  --maxw: 1240px;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Geist', ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; background: none; border: none; color: inherit; padding: 0; }
ul { list-style: none; margin: 0; padding: 0; }
em { font-style: italic; }

/* Typography helpers */
.serif { font-family: 'Instrument Serif', ui-serif, Georgia, serif; font-weight: 400; letter-spacing: -0.01em; }
.mono  { font-family: 'Geist Mono', ui-monospace, 'SF Mono', Menlo, monospace; }
.ink   { color: var(--ink); }
.ink2  { color: var(--ink-2); }
.ink3  { color: var(--ink-3); }
.accent{ color: var(--accent); }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}
@media (min-width: 900px){ .container { padding: 0 40px; } }

/* Film grain overlay */
.grain::before{
  content:""; position: fixed; inset: 0; pointer-events: none; z-index: 100; opacity: 0.035;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.8'/></svg>");
  mix-blend-mode: multiply;
}

/* ─────────────── Reveal animation ─────────────── */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .9s ease, transform .9s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ─────────────── Nav ─────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease, backdrop-filter .3s ease;
}
.nav.scrolled {
  backdrop-filter: saturate(1.4) blur(10px);
  background: color-mix(in oklch, var(--bg) 78%, transparent);
  border-bottom-color: var(--line);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand-mark {
  position: relative;
  width: 28px; height: 28px;
  border: 1px solid var(--ink);
  display: inline-flex; align-items: center; justify-content: center;
  font-family: 'Instrument Serif', serif; font-size: 18px; line-height: 1;
}
.brand-mark::after{
  content:""; position: absolute; right: -4px; bottom: -4px;
  width: 6px; height: 6px; background: var(--accent);
}
.brand-text { line-height: 1.1; }
.brand-text .name { font-size: 13px; font-weight: 500; }
.brand-text .role { font-size: 11px; color: var(--ink-3); font-family: 'Geist Mono', monospace; margin-top: 2px; }

.nav-links { display: none; align-items: center; gap: 4px; }
@media (min-width: 900px){ .nav-links { display: flex; } }
.nav-links a {
  font-size: 13px; padding: 8px 12px; color: var(--ink-3);
  text-transform: capitalize;
  transition: color .2s ease;
}
.nav-links a .num {
  font-family: 'Geist Mono', monospace;
  font-size: 10.5px;
  color: var(--ink-3);
  margin-right: 6px;
}
.nav-links a:hover, .nav-links a.active { color: var(--ink); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px; font-size: 13.5px;
  transition: background .2s ease, color .2s ease, border-color .2s ease, transform .2s ease;
  white-space: nowrap;
}
.btn svg { width: 14px; height: 14px; }
.btn-primary { background: var(--ink); color: var(--bg); }
.btn-primary:hover { background: var(--accent); }
.btn-ghost { border: 1px solid var(--line); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--ink); }
.btn-sm { padding: 8px 14px; font-size: 12.5px; }

/* Focus ring */
button:focus-visible, a:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ─────────────── Hero ─────────────── */
.hero {
  position: relative;
  padding: 130px 0 90px;
  overflow: hidden;
}
@media (min-width: 900px){ .hero { padding: 130px 0 120px; } }

.hero-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; position: relative; }
@media (min-width: 900px){ .hero-grid { gap: 40px; } }

.hero-meta { grid-column: 1 / -1; display: flex; gap: 24px; justify-content: space-between; padding-top: 8px; }
.meta-pill {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 11.5px; font-family: 'Geist Mono', monospace;
  color: var(--ink-3);
}
.dot-ok { width: 6px; height: 6px; border-radius: 999px; background: var(--ok); }
.blink { animation: blink 1.1s steps(2) infinite; }
@keyframes blink { 0%,49%{opacity:1} 50%,100%{opacity:0} }

.hero-main { grid-column: 1 / -1; }

.eyebrow {
  display: flex; align-items: center; gap: 12px;
  font-size: 11.5px; font-family: 'Geist Mono', monospace;
  color: var(--ink-3); margin-bottom: 24px;
  letter-spacing: 0.04em;
}
.eyebrow .rule { flex: 0 0 32px; height: 1px; background: var(--line); }

h1.hero-title {
  font-family: 'Instrument Serif', serif;
  font-weight: 400;
  font-size: clamp(60px, 11vw, 128px);
  line-height: 0.95;
  letter-spacing: -0.02em;
  margin: 0;
}
.hero-roles {
  margin-top: 24px;
  display: flex; flex-wrap: wrap; align-items: center;
  gap: 8px 20px; font-size: 13.5px;
}
.hero-roles .role { color: var(--ink-2); font-family: 'Geist Mono', monospace; }
.hero-roles .sep { color: var(--ink-3); }
.hero-lede {
  margin: 40px 0 0;
  max-width: 620px;
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink-2);
}
@media (min-width: 900px){ .hero-lede { font-size: 18px; } }
.hero-lede em { font-family: 'Instrument Serif', serif; font-style: italic; color: var(--accent); }

.hero-ctas {
  margin-top: 40px;
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px;
}
.scroll-hint {
  display: none; align-items: center; gap: 8px;
  margin-left: 8px; font-size: 12px; color: var(--ink-3);
  font-family: 'Geist Mono', monospace;
}
@media (min-width: 640px){ .scroll-hint { display: inline-flex; } }
.kbd {
  padding: 2px 6px; border: 1px solid var(--line);
  border-radius: 3px; font-size: 11px;
}

/* Decorative dot grid */
.dotgrid {
  background-image: radial-gradient(oklch(0.78 0.006 260) 1px, transparent 1px);
  background-size: 22px 22px;
}
.hero-dots {
  position: absolute; top: 140px; right: -40px;
  width: 280px; height: 280px;
  opacity: 0.6; pointer-events: none;
  display: none;
}
@media (min-width: 900px){ .hero-dots { display: block; } }

/* Cursor dot */
.cursor-dot {
  position: absolute; width: 10px; height: 10px; border-radius: 999px;
  background: var(--accent); mix-blend-mode: multiply;
  pointer-events: none; opacity: 0;
  transition: opacity .3s ease;
  transform: translate(-100px, -100px);
  will-change: transform;
}

/* Marquee */
.marquee {
  margin-top: 80px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 20px 0;
  overflow: hidden;
}
@media (min-width: 900px){ .marquee { margin-top: 110px; } }
.marquee-track {
  display: flex; gap: 40px; white-space: nowrap;
  animation: marquee 40s linear infinite;
}
.marquee-track span {
  font-family: 'Geist Mono', monospace;
  font-size: 12px;
  color: var(--ink-2);
  display: inline-flex; align-items: center; gap: 10px;
}
.marquee-track span::before {
  content:""; width: 4px; height: 4px; border-radius: 999px; background: var(--accent);
  display: inline-block;
}
@keyframes marquee { from { transform: translateX(0);} to { transform: translateX(-50%);} }

/* ─────────────── Generic section ─────────────── */
.section {
  padding: 96px 0;
  border-top: 1px solid var(--line);
}
@media (min-width: 900px){ .section { padding: 130px 0; } }

.sec-head { margin-bottom: 56px; }
.sec-num {
  font-family: 'Geist Mono', monospace;
  font-size: 11.5px;
  color: var(--ink-3);
  letter-spacing: 0.04em;
  margin-bottom: 16px;
}
.sec-title {
  font-family: 'Instrument Serif', serif;
  font-weight: 400;
  font-size: clamp(38px, 6vw, 60px);
  line-height: 1.02;
  letter-spacing: -0.01em;
  margin: 0;
  max-width: 820px;
}
.sec-title em { font-family: 'Instrument Serif', serif; font-style: italic; color: var(--accent); }
.sec-head-row {
  display: flex; align-items: flex-end; justify-content: space-between;
  flex-wrap: wrap; gap: 24px;
}
.sec-note { max-width: 320px; color: var(--ink-2); font-size: 14px; line-height: 1.65; }
.sec-note.mono { font-family: 'Geist Mono', monospace; font-size: 12px; color: var(--ink-3); }

/* ─────────────── About ─────────────── */
.about-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; }
@media (min-width: 900px){ .about-grid { gap: 40px; } }
.about-lhs { grid-column: 1 / -1; }
.about-rhs { grid-column: 1 / -1; display: flex; flex-direction: column; gap: 40px; }
@media (min-width: 900px){
  .about-lhs { grid-column: span 3; position: sticky; top: 96px; align-self: start; }
  .about-rhs { grid-column: 5 / -1; }
}
.about-title { font-family: 'Instrument Serif', serif; font-size: clamp(34px, 5vw, 48px); line-height: 1.02; letter-spacing: -0.01em; }
.about-lead {
  font-family: 'Instrument Serif', serif; font-weight: 400;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-wrap: pretty;
  margin: 0;
}
.about-paras { display: grid; grid-template-columns: 1fr; gap: 40px; max-width: 720px; color: var(--ink-2); font-size: 15px; line-height: 1.7; }
@media (min-width: 700px){ .about-paras { grid-template-columns: 1fr 1fr; } }
.about-stats {
  padding-top: 40px; border-top: 1px solid var(--line);
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
}
@media (min-width: 700px){ .about-stats { grid-template-columns: repeat(4, 1fr); } }
.stat .num { font-family: 'Instrument Serif', serif; font-size: 44px; line-height: 1; font-variant-numeric: tabular-nums; }
.stat .lbl { margin-top: 8px; font-family: 'Geist Mono', monospace; font-size: 12px; color: var(--ink-3); }

/* ─────────────── Skills ─────────────── */
.skills-grid {
  display: grid; grid-template-columns: 1fr; gap: 16px;
}
@media (min-width: 800px){ .skills-grid { grid-template-columns: 1fr 1fr; gap: 20px; } }

.skill-card {
  position: relative;
  padding: 28px;
  border: 1px solid var(--line);
  background: var(--bg);
  transition: background .25s ease, border-color .25s ease;
  outline: none;
}
@media (min-width: 900px){ .skill-card { padding: 36px; } }
.skill-card:hover, .skill-card:focus, .skill-card.is-active {
  background: var(--bg-2);
  border-color: var(--ink);
}
.skill-card .head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 24px; }
.skill-card .head-l { display: flex; align-items: center; gap: 12px; }
.skill-card .icon-box {
  width: 40px; height: 40px;
  border: 1px solid var(--line);
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--ink);
}
.skill-card .tag { font-family: 'Geist Mono', monospace; font-size: 10.5px; color: var(--ink-3); letter-spacing: 0.08em; text-transform: uppercase; }
.skill-card .name { font-family: 'Instrument Serif', serif; font-size: 28px; line-height: 1; margin-top: 2px; }
.skill-card .active-chip {
  font-family: 'Geist Mono', monospace; font-size: 11px; color: var(--ink-3);
  opacity: 0; transition: opacity .2s ease;
}
.skill-card:hover .active-chip, .skill-card.is-active .active-chip { opacity: 1; }
.skill-card ul { display: flex; flex-direction: column; gap: 10px; }
.skill-card li { display: flex; align-items: flex-start; gap: 12px; font-size: 14.5px; line-height: 1.55; color: var(--ink-2); }
.skill-card li .n { font-family: 'Geist Mono', monospace; font-size: 11px; color: var(--ink-3); width: 16px; flex: 0 0 16px; margin-top: 4px; }
.skill-card .corner {
  position: absolute; top: 0; right: 0; width: 24px; height: 24px;
  border-top: 1px solid var(--line-2); border-right: 1px solid var(--line-2);
  transition: width .25s ease, height .25s ease, border-color .25s ease;
}
.skill-card:hover .corner, .skill-card.is-active .corner {
  width: 40px; height: 40px;
  border-top-color: var(--accent); border-right-color: var(--accent);
}

/* ─────────────── Toolkit ─────────────── */
.toolkit-grid {
  display: grid; gap: 12px;
  grid-template-columns: repeat(3, 1fr);
}
@media (min-width: 600px){ .toolkit-grid { grid-template-columns: repeat(4, 1fr); gap: 14px; } }
@media (min-width: 900px){ .toolkit-grid { grid-template-columns: repeat(7, 1fr); gap: 16px; } }

.chip {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 10px;
  padding: 22px 10px;
  border: 1px solid var(--line);
  background: var(--bg);
  transition: background .25s ease, border-color .25s ease, transform .25s ease;
  cursor: default;
}
.chip:hover { background: var(--bg-2); transform: translateY(-2px); border-color: var(--ink); }
.chip .glyph {
  width: 48px; height: 48px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  overflow: hidden;
  transition: border-color .25s ease, transform .25s ease;
}
.chip .glyph img, .chip .glyph svg { width: 30px; height: 30px; display: block; transition: transform .25s ease; }
.chip:hover .glyph { border-color: var(--ink); }
.chip:hover .glyph img, .chip:hover .glyph svg { transform: scale(1.08); }
.chip .label { font-size: 12.5px; color: var(--ink-2); }
.inspect {
  margin-top: 24px;
  height: 20px;
  font-family: 'Geist Mono', monospace; font-size: 12px; color: var(--ink-3);
}

/* ─────────────── Value grid ─────────────── */
.value-grid {
  display: grid; grid-template-columns: 1fr;
  border-top: 1px solid var(--line); border-left: 1px solid var(--line);
}
@media (min-width: 700px){ .value-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px){ .value-grid { grid-template-columns: repeat(3, 1fr); } }
.value-cell {
  padding: 32px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  transition: background .25s ease;
}
@media (min-width: 900px){ .value-cell { padding: 40px; } }
.value-cell:hover { background: var(--bg-2); }
.value-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 24px; }
.value-head .k { font-family: 'Geist Mono', monospace; font-size: 11px; color: var(--ink-3); }
.value-title { font-family: 'Instrument Serif', serif; font-size: 24px; line-height: 1.15; letter-spacing: -0.005em; margin-bottom: 12px; }
.value-desc { font-size: 14px; color: var(--ink-2); line-height: 1.6; }

/* ─────────────── Projects ─────────────── */
.projects-grid {
  display: grid; grid-template-columns: 1fr; gap: 20px;
}
@media (min-width: 700px){ .projects-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px){ .projects-grid { grid-template-columns: repeat(3, 1fr); } }

.project {
  position: relative; overflow: hidden;
  display: block; padding: 24px;
  border: 1px solid var(--line); background: var(--bg);
  transition: background .25s ease;
}
@media (min-width: 900px){ .project { padding: 28px; } }
.project:hover { background: var(--bg-2); }
.project::after {
  content:""; position: absolute; inset: -2px;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,.55) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform .9s ease;
  pointer-events: none;
}
.project:hover::after { transform: translateX(120%); }
.project .preview {
  aspect-ratio: 4 / 3; width: 100%;
  border: 1px solid var(--line-2);
  margin-bottom: 22px;
  position: relative; overflow: hidden;
}
.project .preview svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.project .preview .chip-tag {
  position: absolute; bottom: 10px; left: 10px;
  font-family: 'Geist Mono', monospace; font-size: 10.5px; color: var(--ink-3);
  background: var(--bg); padding: 4px 8px; border: 1px solid var(--line);
}
.project .preview .arr {
  position: absolute; top: 10px; right: 10px;
  width: 32px; height: 32px; border: 1px solid var(--line); background: var(--bg);
  display: inline-flex; align-items: center; justify-content: center;
  transition: transform .25s ease;
}
.project:hover .preview .arr { transform: rotate(-12deg); }
.project .meta { display: flex; justify-content: space-between; gap: 12px; font-family: 'Geist Mono', monospace; font-size: 11px; color: var(--ink-3); margin-bottom: 8px; }
.project .title { font-family: 'Instrument Serif', serif; font-size: 26px; line-height: 1.1; }
.project .stack { margin-top: 12px; font-family: 'Geist Mono', monospace; font-size: 12px; color: var(--ink-3); }

/* ─────────────── CTA ─────────────── */
.cta-section { position: relative; overflow: hidden; }
.cta-bg { position: absolute; inset: 0; opacity: 0.4; pointer-events: none; }
.cta-title {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(48px, 9vw, 96px);
  line-height: 0.98; letter-spacing: -0.02em; margin: 0;
  max-width: 920px;
}
.cta-title em { font-family: 'Instrument Serif', serif; font-style: italic; color: var(--accent); }
.cta-row {
  margin-top: 56px;
  display: grid; grid-template-columns: 1fr; gap: 32px; align-items: end;
}
@media (min-width: 900px){ .cta-row { grid-template-columns: 7fr 5fr; } }
.cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.cta-note { color: var(--ink-2); font-size: 13px; line-height: 1.7; }
@media (min-width: 900px){ .cta-note { text-align: right; } }

/* ─────────────── Footer ─────────────── */
.footer { border-top: 1px solid var(--line); }
.footer-inner {
  padding: 48px 0;
  display: grid; grid-template-columns: 1fr; gap: 32px; align-items: start;
}
@media (min-width: 900px){
  .footer-inner { grid-template-columns: 4fr 3fr 3fr 2fr; padding: 56px 0; }
}
.foot-wordmark { font-family: 'Instrument Serif', serif; font-size: 40px; line-height: 1; }
.foot-role { margin-top: 12px; font-size: 13px; color: var(--ink-2); }
.foot-loc { display: flex; gap: 8px; align-items: flex-start; font-size: 13px; color: var(--ink-2); }
.foot-loc .pin { color: var(--ink-3); margin-top: 2px; }
.foot-loc .time { margin-top: 4px; font-family: 'Geist Mono', monospace; font-size: 11.5px; color: var(--ink-3); }
.foot-label { font-family: 'Geist Mono', monospace; font-size: 10.5px; color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 8px; }
.foot-links { display: flex; flex-direction: column; gap: 6px; }
.foot-links a { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; }
.foot-copy { font-family: 'Geist Mono', monospace; font-size: 11.5px; color: var(--ink-3); }
@media (min-width: 900px){ .foot-copy { text-align: right; } }

/* Animated underline (for footer links) */
.ulink {
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 100% 1px; background-repeat: no-repeat; background-position: 0 100%;
  transition: background-size .35s ease;
}
.ulink:hover { background-size: 0 1px; background-position: 100% 100%; }