*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --cream: #F7F4EF;
  --ink: #1A1714;
  --ink-light: #6B6560;
  --ink-mid: #3D3832;
  --accent: #C4401C;
  --accent-warm: #E8D5C0;
  --border: #E0DAD2;
  --font-display: 'Cormorant Garamond', serif;
  --font-body: 'DM Sans', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* NAV */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 20px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(247, 244, 239, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 400;
  color: var(--ink);
  text-decoration: none;
}
.nav-logo span { color: var(--accent); }
.nav-back {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-light);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color 0.2s;
}
.nav-back:hover { color: var(--ink); }

/* CASE STUDY HERO */
.cs-hero {
  padding: 140px 48px 80px;
  border-bottom: 1px solid var(--border);
  max-width: 1000px;
}

.cs-tag {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
  display: block;
}

.cs-title {
  font-family: var(--font-display);
  font-size: clamp(42px, 6vw, 80px);
  font-weight: 300;
  line-height: 1.05;
  margin-bottom: 28px;
}
.cs-title em { font-style: italic; color: var(--ink-light); }

.cs-summary {
  font-size: 18px;
  line-height: 1.75;
  color: var(--ink-mid);
  max-width: 640px;
  margin-bottom: 48px;
}

.cs-meta {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}
.cs-meta-item {}
.cs-meta-label {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-light);
  margin-bottom: 6px;
}
.cs-meta-value {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 400;
}

/* CONTENT */
.cs-body {
  max-width: 800px;
  padding: 80px 48px;
}

.cs-section {
  margin-bottom: 72px;
}

.cs-section-label {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
  display: block;
}

.cs-section h2 {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 400;
  margin-bottom: 20px;
  line-height: 1.2;
}

.cs-section p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-mid);
  margin-bottom: 16px;
}

.cs-section ul {
  margin: 16px 0;
  padding-left: 0;
  list-style: none;
}
.cs-section ul li {
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-mid);
  padding: 10px 0 10px 20px;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.cs-section ul li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 12px;
}

/* CALLOUT */
.callout {
  background: white;
  border-left: 3px solid var(--accent);
  padding: 24px 28px;
  margin: 32px 0;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 300;
  line-height: 1.4;
  color: var(--ink-mid);
  font-style: italic;
}

/* OUTCOME STATS */
.outcome-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin: 32px 0;
}
.outcome-stat {
  background: var(--cream);
  padding: 28px 24px;
}
.outcome-stat-number {
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 300;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
}
.outcome-stat-label {
  font-size: 12px;
  color: var(--ink-light);
  letter-spacing: 0.04em;
  line-height: 1.5;
}

/* IMAGE PLACEHOLDER */
.img-placeholder {
  width: 100%;
  background: white;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 32px 0;
  aspect-ratio: 16/9;
  color: var(--ink-light);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* NAV BETWEEN PROJECTS */
.cs-nav {
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
}
.cs-nav a {
  background: var(--cream);
  padding: 40px 48px;
  text-decoration: none;
  color: inherit;
  transition: background 0.2s;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.cs-nav a:hover { background: var(--ink); color: var(--cream); }
.cs-nav a:hover .cs-nav-label { color: rgba(247,244,239,0.5); }
.cs-nav-label {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-light);
}
.cs-nav-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 400;
}

/* FOOTER */
footer {
  border-top: 1px solid var(--border);
  padding: 40px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-left {
  font-family: var(--font-display);
  font-size: 13px;
  color: var(--ink-light);
  font-style: italic;
}
.footer-links {
  display: flex;
  gap: 28px;
}
.footer-links a {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-light);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--accent); }

/* REVEAL */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 768px) {
  nav { padding: 16px 24px; }
  .cs-hero { padding: 120px 24px 60px; }
  .cs-body { padding: 60px 24px; }
  .outcome-stats { grid-template-columns: 1fr 1fr; }
  .cs-nav a { padding: 28px 24px; }
  footer { flex-direction: column; gap: 16px; padding: 28px 24px; }
}