/* =================================================================
   Ian Limbaga — portfolio / leadership / thesis
   Design direction: "Considered humanism"
   - Fraunces (humanist display serif) for voice and warmth
   - Inter for clean reading
   - Space Mono labels to signal the technical / machine side
   - Deep teal-green accent (balance, growth) instead of the usual
     terracotta-on-cream; warm-white paper kept restrained
   - Signature: the revised double-diamond mark (his own framework),
     which also literally reads as "converge / diverge, held in balance"
   ================================================================= */

/* ---------- Tokens ---------- */
:root {
  --paper:       #FCFBF8;
  --paper-2:     #F4F2EB;
  --ink:         #19202B;
  --ink-soft:    #58616E;
  --line:        #E6E2D8;
  --accent:      #14635A;
  --accent-deep: #0E4A43;
  --accent-tint: #E7EFEB;
  --warm:        #B57F3D;

  --display: "Instrument Serif", Georgia, serif;
  --body:    "Outfit", system-ui, -apple-system, sans-serif;
  --label:   "Afacad Flux", "Outfit", sans-serif;

  --wrap: 1080px;
  --gap: clamp(1.25rem, 3vw, 2.5rem);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; color-scheme: light; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1.02rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, h4 { margin: 0; font-family: var(--display); font-weight: 400; line-height: 1.06; letter-spacing: 0; }
p { margin: 0 0 1.1em; }

/* ---------- Layout helpers ---------- */
.wrap { width: min(100% - 2.5rem, var(--wrap)); margin-inline: auto; }
.wrap-wide { width: min(100% - 2.5rem, 1240px); margin-inline: auto; }
section { padding-block: clamp(3.5rem, 8vw, 6.5rem); }
.lead { font-size: clamp(1.1rem, 1.6vw, 1.3rem); color: var(--ink-soft); }

/* eyebrow / mono labels */
.eyebrow {
  font-family: var(--label);
  font-size: 0.82rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}


/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding-block: 0.9rem;
}
.brand { display: inline-flex; align-items: center; gap: 0.6rem; text-decoration: none; font-weight: 600; letter-spacing: -0.01em; }
.brand svg { width: 26px; height: 16px; flex: none; }
.brand .name { font-size: 1.84rem; font-family: "Outfit", sans-serif; font-weight: 800; color: var(--accent); }
.nav-links { display: flex; gap: 1.6rem; align-items: center; }
.nav-links a {
  text-decoration: none; color: var(--ink-soft); font-size: 0.92rem;
  position: relative; padding-block: 0.2rem; transition: color .2s;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--ink); }
.nav-links a[aria-current="page"]::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -0.15rem;
  height: 2px; background: var(--accent);
}
.nav-links .nav-cta {
  color: #fff; background: var(--ink); padding: 0.45rem 1.1rem;
  border-radius: 3px; font-size: 0.88rem; transition: opacity .2s;
}
.nav-links .nav-cta:hover { color: #fff; opacity: .82; }
.nav-toggle { display: none; }

/* ---------- Hero ---------- */
.hero { padding-block: clamp(4rem, 11vw, 8rem) clamp(3rem, 7vw, 5rem); position: relative; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.hero h1 {
  font-size: clamp(3rem, 7.5vw, 6.2rem);
  line-height: 0.98;
  letter-spacing: -0.005em;
  margin-bottom: 1.5rem;
}
.hero h1 .soft { color: var(--ink-soft); }
.hero h1 .mark {
  color: var(--accent);
  font-style: italic;
  position: relative;
  white-space: nowrap;
}
.hero h1 .mark::after { content: none; }
.hero .lead { max-width: 42ch; margin-bottom: 2rem; }
.hero-cta { display: flex; gap: 0.9rem; flex-wrap: wrap; }

/* hero services panel */
.hero-services { align-self: center; }
.hero-svc {
  display: grid;
  grid-template-columns: 2.8rem 1fr;
  gap: 0 0.9rem;
  padding-block: 1.35rem;
  border-top: 1px solid var(--line);
}
.hero-svc:last-child { border-bottom: 1px solid var(--line); }
.hero-svc-num {
  font-family: var(--label);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.06em;
  padding-top: 0.22rem;
}
.hero-svc h4 {
  font-size: 1.1rem;
  margin-bottom: 0.35rem;
  font-family: var(--display);
  font-style: italic;
}
.hero-svc p { color: var(--ink-soft); font-size: 0.9rem; margin: 0; line-height: 1.55; }

/* big diamond signature */
.diamond-stage { display: flex; justify-content: center; }
.diamond-stage svg { width: 100%; max-width: 320px; height: auto; }
.dd-line { fill: none; stroke: var(--accent); stroke-width: 1.4; }
.dd-fill { fill: var(--accent-tint); }
.dd-core { fill: var(--accent); }
.dd-draw { stroke-dasharray: 520; stroke-dashoffset: 520; animation: ddDraw 1.8s ease forwards .2s; }
.diamond-stage .dd-core { transform-origin: 200px 100px; animation: corePulse 3s ease-in-out infinite 1.8s; }
@keyframes ddDraw { to { stroke-dashoffset: 0; } }
@keyframes corePulse { 0%,100% { opacity: 1; } 50% { opacity: .45; } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--body); font-size: 0.95rem; font-weight: 500;
  text-decoration: none; padding: 0.72rem 1.25rem; border-radius: 2px;
  border: 1px solid var(--ink); transition: all .2s; cursor: pointer;
}
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: var(--accent-deep); border-color: var(--accent-deep); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ink); }
.btn-paper { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.btn-paper:hover { background: var(--paper-2); border-color: var(--paper-2); }
.btn .arrow { transition: transform .2s; }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- Manifesto ---------- */
.manifesto { background: var(--ink); color: var(--paper); }
.manifesto .eyebrow { color: color-mix(in srgb, var(--accent-tint) 70%, var(--accent)); }
.manifesto .eyebrow::before { background: currentColor; }
.manifesto-body {
  font-family: var(--display);
  font-size: clamp(1.5rem, 3.2vw, 2.4rem);
  line-height: 1.32; font-weight: 400; letter-spacing: -0.015em;
  max-width: 24ch; margin: 0;
}
.manifesto-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: clamp(2rem,5vw,4rem); align-items: start; }
.manifesto-grid p { color: color-mix(in srgb, var(--paper) 78%, var(--ink)); }
.tri { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 2.5rem; border-top: 1px solid color-mix(in srgb, var(--paper) 22%, transparent); padding-top: 2rem; }
.tri h4 { font-family: var(--label); font-weight: 400; font-size: 0.82rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent-tint); margin-bottom: 0.6rem; }
.tri p { font-family: var(--body); font-size: 0.95rem; margin: 0; }

/* ---------- Section heading block ---------- */
.head { max-width: 56ch; margin-bottom: clamp(2rem, 4vw, 3rem); }
.head h2 { font-size: clamp(1.9rem, 4vw, 2.9rem); margin-bottom: 0.8rem; }

/* ---------- Work cards ---------- */
.work-list { display: grid; gap: 1.2rem; }
.work-card {
  display: grid; grid-template-columns: 56px 1fr auto; gap: 1.4rem; align-items: baseline;
  text-decoration: none; color: inherit; padding: 1.8rem 0;
  border-top: 1px solid var(--line); transition: padding-left .25s;
}
.work-card:hover { padding-left: 0.6rem; }
.work-card:last-child { border-bottom: 1px solid var(--line); }
.work-card .idx { font-family: var(--label); font-size: 0.8rem; color: var(--accent); padding-top: 0.4rem; }
.work-card h3 { font-size: 1.5rem; margin-bottom: 0.4rem; }
.work-card .meta { font-family: var(--label); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-soft); }
.work-card .desc { color: var(--ink-soft); font-size: 1rem; max-width: 60ch; margin: 0; }
.work-card .go { font-family: var(--label); font-size: 0.8rem; color: var(--ink-soft); white-space: nowrap; padding-top: 0.4rem; transition: color .2s, transform .2s; }
.work-card:hover .go { color: var(--accent); transform: translateX(4px); }
.tags { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 0.7rem; }
.tag { font-family: var(--label); font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-deep); background: var(--accent-tint); padding: 0.2rem 0.55rem; border-radius: 2px; }

/* ---------- Approach / CTA ---------- */
.approach { background: var(--ink); color: var(--paper); }
.approach h2 { font-size: clamp(1.5rem, 3.2vw, 2.4rem); line-height: 1.32; font-weight: 400; letter-spacing: -0.015em; max-width: 24ch; margin: 0; }
.approach p { color: color-mix(in srgb, var(--paper) 78%, var(--ink)); }
.approach-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: clamp(2rem,5vw,4rem); align-items: start; }
.approach-cta { display: flex; flex-direction: column; align-items: flex-start; gap: 1.6rem; }
.approach-cta .btn { align-self: flex-end; }
.approach-lines { display: flex; flex-direction: column; gap: 0.9rem; }
.approach-lines p { margin: 0; }

/* ---------- Case study (article) ---------- */
.case-hero { padding-block: clamp(3rem, 7vw, 5.5rem) clamp(1.5rem,3vw,2.5rem); }
.case-hero h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); max-width: 18ch; margin-block: 0.6rem 1.2rem; }
.case-meta { display: flex; flex-wrap: wrap; gap: 1.5rem 2.5rem; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding-block: 1.2rem; margin-top: 2rem; }
.case-meta div { min-width: 120px; }
.case-meta dt { font-family: var(--label); font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 0.3rem; }
.case-meta dd { margin: 0; font-weight: 500; }
.article { max-width: 68ch; margin-inline: auto; }
.article h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); margin-block: 2.4rem 0.8rem; }
.article h3 { font-family: var(--label); font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); margin-block: 2rem 0.6rem; }
.article p, .article li { font-size: 1.0625rem; color: var(--ink); }
.article ul { padding-left: 1.1rem; }
.article li { margin-bottom: 0.5rem; }
.pull {
  font-family: var(--display); font-size: clamp(1.4rem,2.6vw,1.9rem);
  line-height: 1.34; color: var(--accent-deep); border-left: 3px solid var(--accent);
  padding: 0.4rem 0 0.4rem 1.4rem; margin: 2.4rem 0; max-width: none;
}
.stat-row { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; margin: 2.5rem 0; }
.stat { border-top: 2px solid var(--accent); padding-top: 0.9rem; }
.stat b { font-family: var(--display); font-size: clamp(1.8rem,4vw,2.6rem); display: block; line-height: 1; }
.stat span { font-size: 0.9rem; color: var(--ink-soft); }

/* ---------- Now / experiments timeline ---------- */
.now-list { display: grid; gap: 1.4rem; }
.now-item { border: 1px solid var(--line); border-radius: 3px; padding: 1.6rem 1.8rem; background: var(--paper); transition: border-color .2s, transform .2s; }
.now-item:hover { border-color: var(--accent); transform: translateY(-2px); }
.now-item .when { font-family: var(--label); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); }
.now-item h3 { font-size: 1.35rem; margin-block: 0.5rem 0.5rem; }
.now-item p { color: var(--ink-soft); margin: 0; }
.now-item a.inline { color: var(--accent-deep); text-decoration: underline; text-underline-offset: 3px; }
.live { display: inline-flex; align-items: center; gap: 0.45rem; font-family: var(--label); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); }
.live .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 0 var(--accent); animation: pulse 2.4s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 7px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }

/* ---------- Image placeholder ---------- */
.img-ph {
  border: 1.5px dashed var(--line); border-radius: 3px; background: var(--paper-2);
  display: flex; align-items: center; justify-content: center; text-align: center;
  padding: 2.5rem 1.5rem; color: var(--ink-soft); min-height: 200px; margin: 1.6rem 0;
}
.img-ph code { font-family: var(--label); font-size: 0.78rem; color: var(--accent-deep); background: var(--accent-tint); padding: 0.15rem 0.4rem; border-radius: 2px; }
.img-ph .label { font-family: var(--label); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; display: block; margin-bottom: 0.6rem; }

/* ---------- Case study image ---------- */
.case-img { margin: 1.6rem 0; aspect-ratio: 16/9; overflow: hidden; border-radius: 3px; cursor: zoom-in; }
.case-img img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .3s ease; }
.case-img:hover img { transform: scale(1.02); }

/* ---------- Lightbox ---------- */
#lb-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.92); z-index: 1000; align-items: center; justify-content: center; cursor: zoom-out; padding: 1rem; }
#lb-overlay.lb-open { display: flex; }
#lb-overlay img { max-width: 92vw; max-height: 92vh; object-fit: contain; border-radius: 3px; cursor: default; }
#lb-close { position: absolute; top: 1rem; right: 1.25rem; background: none; border: none; color: #fff; font-size: 2rem; line-height: 1; cursor: pointer; opacity: .7; }
#lb-close:hover { opacity: 1; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: clamp(2rem,5vw,4rem); align-items: start; }
.contact h1 { font-size: clamp(2.4rem,5.5vw,4.4rem); margin-bottom: 1.2rem; letter-spacing: -0.005em; }
.contact-links { display: grid; gap: 0.2rem; margin-top: 1rem; }
.contact-links a {
  display: flex; justify-content: space-between; align-items: center;
  text-decoration: none; padding: 1.1rem 0; border-bottom: 1px solid var(--line);
  font-size: 1.1rem; transition: padding-left .2s, color .2s;
}
.contact-links a:hover { padding-left: 0.5rem; color: var(--accent); }
.contact-links a .k { font-family: var(--label); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-soft); }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line); padding-block: 2.5rem; margin-top: 2rem; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.footer .brand { font-size: 0.95rem; }
.footer .brand .name { font-size: 0.92rem; color: var(--ink-soft); }
.footer small { font-family: var(--label); font-size: 0.92rem; color: var(--ink-soft); letter-spacing: 0.04em; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  html, body { overflow-x: hidden; }
  body { padding-inline: 1rem; }
  .wrap, .wrap-wide { width: 100%; }
  .hero-grid, .manifesto-grid, .approach-grid, .contact-grid { grid-template-columns: 1fr; }
  .diamond-stage { order: -1; }
  .diamond-stage svg { max-width: 220px; }
  .tri, .stat-row { grid-template-columns: 1fr; }
  .work-card { grid-template-columns: 40px 1fr; }
  .work-card .go { display: none; }
  .work-card .idx { font-size: 1rem; }
  .work-card .meta { font-size: 1rem; }
  .work-card .tag, .tag { font-size: 1rem; }
  .nav-links {
    position: fixed; inset: 57px 0 auto 0; background: var(--paper);
    flex-direction: column; align-items: flex-start; gap: 0; padding: 0.5rem 1.25rem 1.25rem;
    border-bottom: 1px solid var(--line); transform: translateY(-120%); transition: transform .3s; box-shadow: 0 12px 24px rgba(0,0,0,.06);
  }
  .nav-links.open { transform: none; }
  .nav-links a { width: 100%; padding-block: 0.8rem; border-bottom: 1px solid var(--line); }
  .nav-toggle {
    display: inline-flex; flex-direction: column; gap: 4px; background: none; border: 0; cursor: pointer; padding: 6px;
  }
  .nav-toggle span { width: 22px; height: 2px; background: var(--ink); display: block; transition: .2s; }
  .nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
}

/* ---------- Accessibility ---------- */
a:focus-visible, .btn:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}