/* WTB Consulting — Case-study portfolio
   Editorial, numbered sections, terracotta + stone. */
:root {
  --paper: #faf7f2;
  --paper-2: #f0ebe0;
  --ink: #1a1815;
  --ink-2: #3d3a35;
  --ink-3: #6b665e;
  --line: #d9d3c4;
  --line-soft: #e8e1cf;
  --terra: #c85838;
  --terra-dim: #a84528;
  --forest: #2d4a3a;
  --gold: #b08418;

  --f-display: "Noto Serif Display", "Playfair Display", Georgia, serif;
  --f-body: "Söhne", "Inter", -apple-system, "Helvetica Neue", sans-serif;

  --max: 1240px;
  --pad: clamp(20px, 4vw, 56px);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--pad);
}

/* ============ NAV — sits inside a container, with underline ============ */
.nav {
  padding: 28px 0 20px;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 50;
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--pad);
  display: flex;
  align-items: baseline;
  gap: 40px;
}
.brand {
  font-family: var(--f-display);
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--ink);
}
.brand .dot { color: var(--terra); }
.nav-links {
  margin-left: auto;
  display: flex;
  gap: 28px;
  font-size: 14px;
  font-weight: 500;
}
.nav-links a {
  color: var(--ink-3);
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: all .2s;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--ink); border-bottom-color: var(--terra); }

.nav-cta {
  padding: 8px 16px !important;
  background: var(--ink);
  color: var(--paper) !important;
  border-bottom: none !important;
  border-radius: 999px;
  font-size: 13px !important;
}
.nav-cta:hover { background: var(--terra); }

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  font-size: 14px;
  font-weight: 500;
  background: var(--ink);
  color: var(--paper);
  border: none;
  border-radius: 999px;
  transition: all .2s ease;
  cursor: pointer;
}
.btn:hover { background: var(--terra); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }

/* ============ HERO — magazine cover ============ */
.hero {
  padding: 80px 0 60px;
  border-bottom: 1px solid var(--line);
}
.hero-issue {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 48px;
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  flex-wrap: wrap;
  gap: 16px;
}
.hero-issue .divider {
  height: 1px;
  background: var(--line);
  flex: 1;
  margin: 0 24px;
}
.hero-issue .terra { color: var(--terra); }

.hero-title {
  font-family: var(--f-display);
  font-size: clamp(56px, 10vw, 160px);
  font-weight: 400;
  line-height: 0.92;
  letter-spacing: -0.025em;
  margin-bottom: 48px;
}
.hero-title em {
  font-style: italic;
  font-weight: 400;
  color: var(--terra);
}
.hero-title .br { display: block; }

.hero-pullquote {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  padding: 48px 0 0;
  border-top: 1px solid var(--line);
  align-items: start;
}
.hero-quote-mark {
  font-family: var(--f-display);
  font-size: 140px;
  line-height: 1;
  color: var(--terra);
  font-style: italic;
  margin-top: -20px;
}
.hero-lede {
  font-family: var(--f-display);
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 400;
  line-height: 1.35;
  color: var(--ink);
  font-style: italic;
  max-width: 36ch;
  margin-bottom: 24px;
}
.hero-byline {
  font-size: 13px;
  color: var(--ink-3);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 32px;
}
.hero-byline .terra { color: var(--terra); font-style: normal; }

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ============ SECTORS STRIP ============ */
.sectors {
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
  background: var(--paper-2);
}
.sectors-inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  align-items: center;
}
.sectors h4 {
  font-family: var(--f-display);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.sectors-list {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  font-family: var(--f-display);
  font-size: clamp(20px, 2.4vw, 30px);
  font-style: italic;
  color: var(--ink);
}
.sectors-list .amp { color: var(--terra); }

/* ============ CASE STUDIES ============ */
.cases {
  padding: 100px 0;
}
.cases-head {
  margin-bottom: 80px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 16px;
}
.cases-head h2 {
  font-family: var(--f-display);
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1;
}
.cases-head h2 em { font-style: italic; color: var(--terra); }
.cases-head .meta {
  font-size: 13px;
  color: var(--ink-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.case {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 56px;
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}
.case:last-child { border-bottom: none; }
.case-num {
  font-family: var(--f-display);
  font-size: 80px;
  line-height: 0.9;
  font-weight: 400;
  color: transparent;
  -webkit-text-stroke: 1px var(--terra);
  text-stroke: 1px var(--terra);
  letter-spacing: -0.04em;
  position: sticky;
  top: 100px;
}
.case-body .meta {
  font-size: 12px;
  color: var(--terra);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.case-body h3 {
  font-family: var(--f-display);
  font-size: clamp(28px, 3.4vw, 44px);
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 1.1;
  margin-bottom: 24px;
  max-width: 20ch;
}
.case-body h3 em { font-style: italic; color: var(--terra); font-weight: 400; }
.case-body p {
  font-size: 16.5px;
  line-height: 1.65;
  color: var(--ink-2);
  max-width: 58ch;
  margin-bottom: 16px;
}
.case-body p strong { color: var(--ink); font-weight: 600; }
.case-body .tags {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.case-body .tags span {
  padding: 5px 12px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
  color: var(--ink-2);
}

/* ============ PROMISE ============ */
.promise {
  padding: 100px 0;
  background: var(--ink);
  color: var(--paper);
  text-align: center;
}
.promise-lg {
  font-family: var(--f-display);
  font-size: clamp(40px, 6vw, 80px);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.02em;
  max-width: 20ch;
  margin: 0 auto 32px;
}
.promise-lg em { font-style: italic; color: var(--gold); }
.promise .signature {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  color: rgba(250, 247, 242, 0.5);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.promise .signature::before,
.promise .signature::after {
  content: "";
  width: 48px;
  height: 1px;
  background: var(--gold);
}

/* ============ CTA ============ */
.cta {
  padding: 100px 0 40px;
  text-align: center;
}
.cta h2 {
  font-family: var(--f-display);
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 20px;
  max-width: 20ch;
  margin-left: auto;
  margin-right: auto;
}
.cta h2 em { font-style: italic; color: var(--terra); }
.cta p {
  font-size: 17px;
  color: var(--ink-3);
  max-width: 48ch;
  margin: 0 auto 32px;
}

/* ============ FOOTER ============ */
.foot { padding: 60px 0 24px; border-top: 1px solid var(--line); }
.foot-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.foot-brand .logo {
  font-family: var(--f-display);
  font-size: 36px;
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  font-style: italic;
}
.foot-brand .logo .dot { color: var(--terra); font-style: normal; }
.foot-brand p { font-size: 14px; color: var(--ink-3); max-width: 320px; }

.foot-col h5 {
  font-family: var(--f-display);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--terra);
  margin-bottom: 16px;
}
.foot-col ul { list-style: none; }
.foot-col li { margin-bottom: 8px; font-size: 14px; }
.foot-col a { color: var(--ink-3); transition: color .2s; }
.foot-col a:hover { color: var(--ink); }
.foot-bot {
  border-top: 1px solid var(--line);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

@media (max-width: 880px) {
  .nav-inner { flex-wrap: wrap; gap: 16px; }
  .nav-links { width: 100%; gap: 20px; font-size: 13px; }
  .nav-cta { display: none; }
  .hero-pullquote { grid-template-columns: 1fr; gap: 32px; }
  .hero-quote-mark { font-size: 80px; }
  .sectors-inner { grid-template-columns: 1fr; gap: 20px; }
  .case { grid-template-columns: 1fr; gap: 24px; padding: 40px 0; }
  .case-num { position: static; font-size: 56px; }
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .foot-bot { flex-direction: column; gap: 6px; }
}

.in { animation: in .8s cubic-bezier(.2,.6,.2,1) both; }
.in.d1 { animation-delay: .1s; }
.in.d2 { animation-delay: .2s; }
.in.d3 { animation-delay: .3s; }
@keyframes in { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }