@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,600;9..144,700&family=Jost:wght@300;400;500;600&display=swap');

/* ─── Variables ─── */
:root {
  --bg:           #F8F6F1;
  --surface:      #FFFFFF;
  --text:         #1C1A17;
  --text-muted:   #6B6760;
  --accent:       #1E3D5C;
  --border:       #E2DED7;

  --font-display: 'Fraunces', Georgia, serif;
  --font-body:    'Jost', system-ui, sans-serif;

  --max-width:     1100px;
  --content-width: 700px;
  --nav-height:    68px;
}

/* ─── Reset ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html  { font-size: 16px; scroll-behavior: smooth; }
body  {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a     { color: inherit; text-decoration: none; }
img   { max-width: 100%; display: block; }
ul    { list-style: none; }

/* ─── Layout ─── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ─── Navigation ─── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  height: var(--nav-height);
  display: flex;
  align-items: center;
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text);
  transition: color 0.2s;
}
.nav-brand:hover { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 2.5rem;
}
.nav-links a {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color 0.2s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.25s ease;
}
.nav-links a:hover,
.nav-links a.active { color: var(--text); }
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

/* ─── Hero ─── */
.hero {
  padding: 7rem 0 5rem;
}
.hero-eyebrow {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.75rem;
  animation: fadeUp 0.5s ease both;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.5vw, 3.1rem);
  font-weight: 600;
  line-height: 1.22;
  color: var(--text);
  max-width: 780px;
  margin-bottom: 1.5rem;
  animation: fadeUp 0.5s 0.1s ease both;
}
.hero-sub {
  font-size: 0.975rem;
  font-weight: 300;
  color: var(--text-muted);
  max-width: 520px;
  line-height: 1.8;
  animation: fadeUp 0.5s 0.2s ease both;
}

/* ─── Section header ─── */
.section-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
  max-width: 160px;
}

/* ─── Work section ─── */
.work-section {
  padding: 0 0 7rem;
}

/* ─── Case Cards ─── */
.cards-grid {
  display: grid;
  gap: 1px;
  background: var(--border);
}

.card {
  background: var(--bg);
  padding: 2.25rem 2rem;
  display: grid;
  grid-template-columns: 3rem 1fr 2rem;
  gap: 0 1.75rem;
  align-items: start;
  transition: background 0.2s;
  cursor: pointer;
}
.card:hover { background: var(--surface); }

.card-number {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent);
  opacity: 0.7;
  padding-top: 0.3rem;
}
.card-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.3rem;
  line-height: 1.3;
}
.card-role {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.9rem;
}
.card-impact {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
  max-width: 560px;
}
.card-arrow {
  font-size: 1.1rem;
  color: var(--border);
  padding-top: 0.25rem;
  transition: color 0.2s, transform 0.2s;
  align-self: center;
  justify-self: end;
}
.card:hover .card-arrow {
  color: var(--accent);
  transform: translateX(4px);
}

/* ─── Case Study Page ─── */
.case-header {
  padding: 4.5rem 0 2.5rem;
  border-bottom: 1px solid var(--border);
}
.case-back {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 2.25rem;
  transition: color 0.2s;
}
.case-back:hover { color: var(--accent); }

.case-type {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.9rem;
}
.case-title {
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 3vw, 2.6rem);
  font-weight: 600;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 0.6rem;
  max-width: 760px;
}
.case-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* ─── Case Body ─── */
.case-body {
  padding: 3.5rem 0 7rem;
  max-width: var(--content-width);
}

.outcome-block {
  background: var(--accent);
  color: #fff;
  padding: 2rem 2.25rem;
  margin-bottom: 3.5rem;
}
.outcome-block .ol {
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  opacity: 0.55;
  margin-bottom: 0.75rem;
}
.outcome-block p {
  font-size: 0.95rem;
  line-height: 1.75;
  font-weight: 300;
}

.cs-section {
  margin-bottom: 3rem;
}
.cs-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.cs-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}
.cs-text {
  font-size: 0.925rem;
  line-height: 1.85;
  color: var(--text);
}
.cs-text p { margin-bottom: 0.85rem; }
.cs-text p:last-child { margin-bottom: 0; }

/* ─── Constraints list ─── */
.cs-constraints {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text);
}
.cs-constraints li {
  padding: 0.55rem 0 0.55rem 1.25rem;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.cs-constraints li:first-child { border-top: 1px solid var(--border); }
.cs-constraints li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.75rem;
}

/* ─── Approach Phases ─── */
.phases { }
.phase {
  display: grid;
  grid-template-columns: 3.25rem 1fr;
  gap: 0 1.5rem;
  margin-bottom: 2.25rem;
  padding-bottom: 2.25rem;
  border-bottom: 1px solid var(--border);
}
.phase:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}
.phase-num {
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent);
  opacity: 0.6;
  padding-top: 0.2rem;
}
.phase-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.65rem;
  line-height: 1.3;
}
.phase-body {
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--text);
}
.phase-body p { margin-bottom: 0.7rem; }
.phase-body p:last-child { margin-bottom: 0; }

/* ─── Callout (What This Demonstrates) ─── */
.callout {
  border-left: 2px solid var(--accent);
  padding: 1.25rem 1.5rem;
  background: var(--surface);
  margin-top: 3rem;
}
.callout p {
  font-size: 0.925rem;
  line-height: 1.8;
  color: var(--text);
  font-style: italic;
}

/* ─── About page ─── */
.about-hero {
  padding: 7rem 0 4rem;
  border-bottom: 1px solid var(--border);
}
.about-name {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.75rem;
  line-height: 1.2;
}
.about-tagline {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 400;
  letter-spacing: 0.02em;
}
.about-body {
  padding: 3.5rem 0 7rem;
  max-width: var(--content-width);
}
.about-section { margin-bottom: 2.75rem; }
.about-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.about-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}
.about-text {
  font-size: 0.925rem;
  line-height: 1.85;
  color: var(--text);
}

/* ─── Contact links ─── */
.contact-links { display: flex; flex-direction: column; gap: 0.7rem; }
.contact-link {
  font-size: 0.875rem;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.2s;
}
.contact-link:hover { color: var(--accent); }
.contact-link::before { content: '→'; font-size: 0.8rem; }

/* ─── Languages table ─── */
.lang-list {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.5rem 2rem;
  font-size: 0.9rem;
  color: var(--text);
}
.lang-name { font-weight: 500; }
.lang-level { color: var(--text-muted); }

/* ─── Footer ─── */
footer {
  border-top: 1px solid var(--border);
  padding: 1.75rem 0;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-copy {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}
.footer-links { display: flex; gap: 2rem; }
.footer-links a {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--text); }

/* ─── Animations ─── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .hero { padding: 4.5rem 0 3.5rem; }
  .card { grid-template-columns: 2.5rem 1fr; }
  .card-arrow { display: none; }
  .about-hero { padding: 4.5rem 0 3rem; }
  .footer-inner { flex-direction: column; gap: 1rem; text-align: center; }
  .footer-links { justify-content: center; }
}

@media (max-width: 480px) {
  .container,
  .nav-inner,
  .footer-inner { padding: 0 1.25rem; }
  .card { grid-template-columns: 1fr; gap: 0.4rem 0; }
  .card-number { padding-top: 0; }
  .phase { grid-template-columns: 2.5rem 1fr; gap: 0 1rem; }
}