/* ============================================================
   oculent — Design System
   Charcoal / Ivory / Olive · Lora + Poppins
   ============================================================ */

:root {
  /* Brand colors */
  --charcoal-900: #131313;
  --charcoal-800: #1e1e1e;
  --charcoal-700: #2b2b2b;
  --charcoal-500: #4b4b4b;
  --charcoal-400: #6b6b6b;
  --charcoal-300: #a0a0a0;

  --ivory-100: #f5f3ef;
  --ivory-200: #d0cfcb;
  --ivory-300: #acaaa7;
  --ivory-400: #6e6d6c;

  --olive-900: #202c14;
  --olive-800: #32451f;
  --olive-700: #47622c;
  --olive-500: #637a4c;
  --olive-400: #7e916b;
  --olive-300: #acb8a0;

  --bg: var(--charcoal-700);
  --bg-raised: var(--charcoal-800);
  --ink: var(--ivory-100);
  --ink-dim: var(--ivory-200);
  --accent: var(--olive-700);
  --accent-light: var(--olive-400);
  --hairline: rgba(245, 243, 239, 0.14);

  --font-serif: "Lora", "Iowan Old Style", Georgia, serif;
  --font-sans: "Poppins", "Inter", -apple-system, BlinkMacSystemFont, sans-serif;

  --wrap: min(1180px, 100% - 3rem);
  --radius: 2px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }

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

ul, ol { margin: 0; padding: 0; list-style: none; }

h1, h2, h3, h4, blockquote, p { margin: 0; }

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.wrap {
  width: var(--wrap);
  margin-inline: auto;
}

/* ---------- Type scale ---------- */

h1, .h1 { font-size: clamp(2.6rem, 2.05rem + 2.4vw, 3.85rem); line-height: 1.08; }
h2, .h2 { font-size: clamp(2rem, 1.68rem + 1.4vw, 2.75rem); line-height: 1.14; }
h3, .h3 { font-size: clamp(1.4rem, 1.26rem + 0.6vw, 1.75rem); line-height: 1.25; }
h4, .h4 { font-size: 1.25rem; line-height: 1.4; }

.body-l { font-size: 1.125rem; line-height: 1.6; }
.caption { font-size: 0.8125rem; line-height: 1.55; font-weight: 500; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin: 0 0 1.1rem;
}

.eyebrow::before {
  content: "";
  width: 1.6em;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

.eyebrow-olive { color: var(--olive-400); }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.6rem;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.95rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: transform 0.35s var(--ease), background-color 0.35s var(--ease), border-color 0.35s var(--ease), color 0.35s var(--ease);
  white-space: nowrap;
}

.btn-olive {
  background: var(--accent);
  color: var(--ivory-100);
}
.btn-olive:hover { background: var(--olive-500); transform: translateY(-1px); }

.btn-ghost {
  background: transparent;
  border-color: var(--hairline);
  color: var(--ink);
}
.btn-ghost:hover { border-color: var(--ink-dim); transform: translateY(-1px); }

.btn-dark {
  background: var(--charcoal-700);
  color: var(--ivory-100);
}
.btn-dark:hover { background: var(--charcoal-900); transform: translateY(-1px); }

.btn-lg { padding: 1.05rem 2.1rem; font-size: 1rem; }

/* ---------- Nav ---------- */

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  padding: 1.4rem 0;
  transition: background-color 0.4s var(--ease), padding 0.4s var(--ease), border-color 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}

.nav.is-scrolled {
  background: var(--charcoal-700);
  padding: 0.95rem 0;
  border-color: var(--hairline);
}

.nav-inner {
  width: var(--wrap);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--ink);
  margin-right: auto;
}

.brand-mark {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  transition: transform 0.5s var(--ease);
}

.brand:hover .brand-mark { transform: rotate(24deg) scale(1.08); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.1rem;
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--ink-dim);
}

.nav-links a {
  position: relative;
  padding: 0.2rem 0;
  transition: color 0.3s var(--ease);
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: -2px;
  height: 1px;
  background: var(--olive-400);
  transition: right 0.35s var(--ease);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { right: 0; }

.nav-toggle {
  display: none;
  width: 34px; height: 34px;
  background: none; border: none;
  position: relative;
  cursor: pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 6px; right: 6px;
  height: 1px;
  background: var(--ink);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease), top 0.3s var(--ease);
}
.nav-toggle span { top: 16px; }
.nav-toggle span::before { top: -7px; }
.nav-toggle span::after { top: 7px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { top: 0; transform: rotate(-45deg); }

.nav-mobile {
  position: fixed;
  inset: 0;
  background: var(--charcoal-900);
  z-index: 90;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 1.1rem;
  padding: 2rem 2rem;
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: transform 0.5s var(--ease), opacity 0.5s var(--ease), visibility 0.5s;
}
.nav-mobile.is-open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}
.nav-mobile a {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.3rem;
  color: var(--ink-dim);
  padding: 0.3rem 0;
  transition: color 0.3s var(--ease), transform 0.3s var(--ease);
}
.nav-mobile a:hover,
.nav-mobile a:focus-visible {
  color: var(--ink);
  transform: translateX(6px);
}
.nav-mobile .btn { margin-top: 0.8rem; font-family: var(--font-sans); }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 6rem;
  border-bottom: 1px solid var(--hairline);
}

.hero-network {
  position: absolute;
  top: 50%;
  right: -6%;
  width: min(58vw, 780px);
  aspect-ratio: 1;
  transform: translateY(-50%);
  opacity: 0.1;
  pointer-events: none;
  animation: drift 34s ease-in-out infinite;
}

.hero-network img,
.cta-network img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

@keyframes drift {
  0%, 100% { transform: translateY(-50%) rotate(0deg) scale(1); }
  50% { transform: translateY(-52%) rotate(3deg) scale(1.02); }
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: var(--wrap);
  margin-inline: auto;
  max-width: 760px;
  padding-block: 4rem;
}

.hero h1 {
  margin-bottom: 1.6rem;
}

.hero-lead {
  max-width: 40ch;
  font-size: 1.15rem;
  line-height: 1.65;
  color: var(--ink-dim);
  margin-bottom: 2.6rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.scroll-cue {
  position: absolute;
  bottom: 2.4rem;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 46px;
  background: linear-gradient(var(--ink-dim), transparent);
  opacity: 0.5;
}

/* ---------- Reveal ---------- */

.reveal {
  opacity: 0;
  transform: translateY(26px) scale(0.975);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}
.reveal-1 { transition-delay: 0.05s; }
.reveal-2 { transition-delay: 0.14s; }
.reveal-3 { transition-delay: 0.23s; }
.reveal-4 { transition-delay: 0.32s; }
.reveal-5 { transition-delay: 0.41s; }

/* ---------- Section shared ---------- */

section { position: relative; scroll-margin-top: 88px; }

.section-pad { padding-block: clamp(5rem, 4rem + 4vw, 8.5rem); }

.section-head {
  max-width: 640px;
  margin-bottom: clamp(3rem, 2.4rem + 2vw, 4.5rem);
}

.section-lead {
  margin-top: 1.1rem;
  color: var(--ink-dim);
  font-size: 1.05rem;
  max-width: 46ch;
}

.on-ivory { background: var(--ivory-100); color: var(--charcoal-700); }
.on-ivory .eyebrow { color: var(--charcoal-400); }
.on-ivory .eyebrow-olive { color: var(--olive-700); }
.on-ivory h1, .on-ivory h2, .on-ivory h3, .on-ivory h4 { color: var(--charcoal-700); }
.on-ivory .section-lead { color: var(--charcoal-500); }

/* ---------- Mission ---------- */

.mission-inner {
  width: var(--wrap);
  margin-inline: auto;
  max-width: 880px;
  text-align: left;
}

.mission-quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(1.5rem, 1.2rem + 1.4vw, 2.3rem);
  line-height: 1.42;
  color: var(--charcoal-700);
  max-width: 20ch;
}

.mission-footnote {
  margin-top: 2.6rem;
  padding-top: 2.2rem;
  border-top: 1px solid rgba(43, 43, 43, 0.14);
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 2rem;
  color: var(--charcoal-500);
  font-size: 0.98rem;
}

.mission-footnote strong {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--olive-700);
}

/* ---------- Values ---------- */

.values-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.6rem 3.2rem;
}

.value-item {
  padding-top: 1.6rem;
  border-top: 1px solid var(--hairline);
  transition: transform 0.45s var(--ease), border-color 0.45s var(--ease);
}

.value-item:hover {
  transform: translateX(8px);
  border-top-color: var(--olive-500);
}

.value-num {
  display: inline-block;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.95rem;
  color: var(--olive-400);
  margin-bottom: 0.9rem;
  transition: transform 0.45s var(--ease), color 0.45s var(--ease);
}

.value-item:hover .value-num {
  transform: scale(1.25);
  color: var(--olive-300);
}

.value-item h3 { margin-bottom: 0.65rem; }
.value-item p { color: var(--ink-dim); max-width: 40ch; }

.value-item:first-child,
.value-item:nth-child(2) { padding-top: 0; border-top: none; }

/* ---------- Services ---------- */

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(43, 43, 43, 0.12);
  border: 1px solid rgba(43, 43, 43, 0.12);
}

.service-card {
  position: relative;
  background: var(--ivory-100);
  padding: 2.4rem 2.1rem;
  display: flex;
  flex-direction: column;
  min-height: 280px;
  transition: background-color 0.4s var(--ease), transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 3px;
  background: var(--olive-700);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s var(--ease);
}

.service-card:hover {
  background: #efece4;
  transform: translateY(-8px);
  box-shadow: 0 24px 48px -24px rgba(43, 43, 43, 0.28);
}

.service-card:hover::before { transform: scaleX(1); }

.service-index {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--olive-700);
  font-size: 0.95rem;
  margin-bottom: auto;
  padding-bottom: 2.2rem;
  transition: transform 0.4s var(--ease);
  display: inline-block;
}

.service-card:hover .service-index { transform: translateX(4px) scale(1.1); }

.service-card h3 { margin-bottom: 0.75rem; }
.service-card p { color: var(--charcoal-500); }

/* ---------- CTA ---------- */

.cta {
  background: var(--charcoal-700);
  overflow: hidden;
}

.cta-network {
  position: absolute;
  bottom: -18%;
  left: -10%;
  width: min(46vw, 560px);
  aspect-ratio: 1;
  opacity: 0.12;
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 1;
  width: var(--wrap);
  margin-inline: auto;
  max-width: 640px;
  text-align: left;
}

.cta-inner p.body-l {
  margin-top: 1.3rem;
  margin-bottom: 2.4rem;
  color: var(--ink-dim);
  max-width: 48ch;
}

.cta-meta {
  margin-top: 2.2rem;
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  font-size: 0.9rem;
  color: var(--ink-dim);
}

.cta-meta a:hover { color: var(--ink); }

/* ---------- Footer ---------- */

.footer {
  background: var(--charcoal-700);
  border-top: 1px solid var(--hairline);
  padding-block: 3.4rem 2rem;
}

.footer-inner {
  width: var(--wrap);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 2.6rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.footer-brand .brand-mark { width: 32px; height: 32px; }

.footer-brand p {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--ink-dim);
  font-size: 0.95rem;
}

.footer-col h4 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 1.1rem;
}

.footer-col ul { display: flex; flex-direction: column; gap: 0.65rem; }
.footer-col a { color: var(--ink); font-size: 0.92rem; transition: color 0.3s var(--ease); }
.footer-col a:hover { color: var(--olive-400); }

.footer-bottom {
  width: var(--wrap);
  margin-inline: auto;
  padding-top: 1.8rem;
  border-top: 1px solid var(--hairline);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.8rem;
  font-size: 0.8rem;
  color: var(--ink-dim);
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-toggle { display: block; }

  .values-list { grid-template-columns: 1fr; gap: 2rem; }
  .value-item:nth-child(2) { padding-top: 1.6rem; border-top: 1px solid var(--hairline); }

  .services-grid { grid-template-columns: 1fr; }
  .mission-footnote { grid-template-columns: 1fr; gap: 1rem; }

  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }

  .hero-network { width: 90vw; right: -20%; opacity: 0.08; }
}

@media (max-width: 560px) {
  .footer-inner { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .btn { width: 100%; justify-content: center; }
  .hero-actions .btn { width: auto; }
}