/* ── RESET & TOKENS ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --cream:      #ffffff;
  --paper:      #f8f9ff;
  --clay:       #5B7FE8;
  --clay-lt:    #E0E8FF;
  --clay-dk:    #2C4DB8;
  --terracotta: #7B9EF0;
  --sage:       #5B7FE8;
  --sage-lt:    #E0E8FF;
  --ink:        #0D0D0D;
  --ink-2:      #2A2A2A;
  --ink-3:      #888888;
  --sand:       #E8ECFF;
  --dark-bg:    #0D0D0D;
  --dark-2:     #1A1A1A;
  --dark-3:     #252525;
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-xl:  16px;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--cream);
  color: var(--ink);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* ── NAV ──────────────────────────────────────────────── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 3rem;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(91,127,232,0.1);
  transition: background 0.3s;
}

.nav-logo {
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
  cursor: pointer;
}

.nav-logo span { color: var(--clay); }

.nav-links { display: flex; gap: 0.25rem; align-items: center; }

.nav-link {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--ink-3);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
  border: none;
  background: none;
  font-family: 'Inter', sans-serif;
}

.nav-link:hover { color: var(--ink); background: var(--sand); }
.nav-link.active { color: var(--clay); font-weight: 500; background: var(--clay-lt); }

.nav-resume {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--clay);
  text-decoration: none;
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--clay);
  transition: background 0.2s, color 0.2s;
  cursor: pointer;
}

.nav-resume:hover { background: var(--clay); color: #fff; }

/* ── PAGE SYSTEM ─────────────────────────────────────── */
.page { display: none; padding-top: 64px; min-height: 100vh; }
.page.active { display: block; }

/* ── SHARED ──────────────────────────────────────────── */
.inner { max-width: 1100px; margin: 0 auto; padding: 0 2.5rem; }
.inner-sm { max-width: 740px; margin: 0 auto; padding: 0 2.5rem; }

.section-label {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--clay);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 1.25rem;
  height: 1px;
  background: var(--clay);
}

h2.section-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.9rem, 3vw, 2.8rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.15;
  margin-bottom: 1rem;
}

.section-sub {
  font-size: 0.95rem;
  color: var(--ink-3);
  font-weight: 400;
  line-height: 1.75;
  max-width: 500px;
  margin-bottom: 3rem;
}

/* ──────────────────────────────────────────────────────
   HOME PAGE
────────────────────────────────────────────────────── */
.hero {
  min-height: calc(100vh - 64px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 4rem 3rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.hero-kicker {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--clay);
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hero-kicker::before {
  content: '';
  width: 2rem;
  height: 1px;
  background: var(--clay);
  display: inline-block;
}

.hero-headline {
  font-family: 'Playfair Display', serif;
  font-size: clamp(3.2rem, 7vw, 7rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--ink);
  margin-bottom: 2.5rem;
  max-width: 900px;
}

.hero-headline em {
  font-style: italic;
  color: var(--clay);
}

/* ── Hero cycling text ── */
.hero-cycle-wrap {
  position: relative;
  overflow: hidden;
  min-height: clamp(10rem, 16vw, 16rem);
  margin-bottom: 2.5rem;
}

.hero-statement {
  font-family: 'Playfair Display', serif;
  font-size: clamp(3.2rem, 7vw, 7rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--ink);
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  transform: translateY(105%);
  opacity: 0;
  transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.5s ease;
}

.hero-statement em {
  font-style: italic;
  color: var(--clay);
}

.hero-statement.is-active {
  transform: translateY(0);
  opacity: 1;
}

.hero-statement.is-exit {
  transform: translateY(-105%);
  opacity: 0;
}

.kicker-spark {
  color: var(--clay);
  display: inline-block;
  animation: spark-spin 8s linear infinite;
}

@keyframes spark-spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.hero-bottom {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--ink-2);
  font-weight: 300;
  line-height: 1.8;
  max-width: 420px;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-shrink: 0;
  flex-wrap: wrap;
}

.btn-filled {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.85rem 1.75rem;
  background: var(--clay);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  transition: background 0.2s, transform 0.15s;
  text-decoration: none;
  letter-spacing: 0.01em;
}

.btn-filled:hover { background: var(--clay-dk); transform: translateY(-1px); }

.cs-proto-btn-wrap {
  margin: 1.25rem 0;
}

.cs-proto-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 1.5rem;
  background: var(--clay);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-family: 'Inter', sans-serif;
  transition: background 0.2s, transform 0.15s;
  letter-spacing: 0.01em;
}

.cs-proto-btn:hover { background: var(--clay-dk); transform: translateY(-1px); }

/* ── Placeholder blocks ── */
.cs-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 1.25rem 0;
  padding: 1.5rem 2rem;
  border: 1.5px dashed rgba(0,0,0,0.18);
  border-radius: var(--radius-sm);
  background: rgba(0,0,0,0.025);
  min-height: 120px;
  text-align: center;
}

.cs-placeholder span {
  font-size: 0.8rem;
  color: var(--ink-3);
  letter-spacing: 0.02em;
}

.cs-placeholder span::before {
  content: '📷 ';
}

.cs-problem-image {
  margin: 1.5rem 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.cs-table-wrap {
  margin: 1.5rem 0;
  border: 1px solid #dde1ef;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.cs-decision-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  margin: 0;
}
.cs-decision-table th,
.cs-decision-table td {
  text-align: left;
  padding: 0.85rem 1.1rem;
  border-bottom: 1px solid #dde1ef;
  vertical-align: top;
  line-height: 1.55;
}
.cs-decision-table th {
  font-weight: 600;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  background: var(--paper);
  border-bottom: 1px solid #c8ccde;
}
.cs-decision-table tbody tr td:first-child {
  font-weight: 500;
  color: var(--ink-2);
  width: 28%;
}
.cs-decision-table tbody tr:hover td {
  background: var(--paper);
}
.cs-decision-table tbody tr:last-child td {
  border-bottom: none;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.85rem 1.75rem;
  background: transparent;
  color: var(--ink-2);
  font-size: 0.875rem;
  font-weight: 400;
  border-radius: var(--radius-sm);
  border: 1.5px solid #ddd;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  transition: border-color 0.2s, color 0.2s;
  text-decoration: none;
  letter-spacing: 0.01em;
}

.btn-outline:hover { border-color: var(--clay); color: var(--clay); }

/* Marquee strip */
.marquee-strip {
  background: var(--clay);
  overflow: hidden;
  padding: 0.85rem 0;
  white-space: nowrap;
}

.marquee-inner {
  display: inline-block;
  animation: marquee 22s linear infinite;
}

.marquee-inner span {
  font-family: 'Inter', sans-serif;
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  padding: 0 2rem;
}

.marquee-inner span.accent { color: rgba(255,255,255,1); }

@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* Home: case study section */
.home-cs-rows {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 3rem 5rem;
}

.home-cs-header { margin-bottom: 2.5rem; }

.cs-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
  border: 1.5px solid #ddd;
  border-radius: 100px;
  padding: 0.4rem 1rem;
  margin-bottom: 1.25rem;
}

/* Cards */
.hcs-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-radius: 20px;
  overflow: hidden;
  margin-bottom: 1.5rem;
  cursor: pointer;
  background: var(--paper);
  transition: transform 0.22s, box-shadow 0.22s;
}

.hcs-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 60px rgba(91,127,232,0.1);
}

.hcs-card-visual {
  min-height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hcs-card-body {
  padding: 3.5rem 3rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.25rem;
}

.hcs-card-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.hcs-card-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.5rem, 2.5vw, 2.1rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.15;
}

.hcs-card-desc {
  font-size: 0.95rem;
  color: var(--ink-3);
  line-height: 1.75;
  font-weight: 400;
}

.hcs-card-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.hcs-pill-tag {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.3rem 0.85rem;
  border-radius: 100px;
  border: 1.5px solid rgba(91,127,232,0.3);
  color: var(--clay);
}

.hcs-card-metrics {
  display: flex;
  gap: 2.5rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--sand);
  border-bottom: 1px solid var(--sand);
}

.hcs-metric-val {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 0.3rem;
}

.hcs-metric-label {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.hcs-card-actions { display: flex; gap: 0.75rem; }

.hcs-btn-primary {
  display: inline-flex;
  align-items: center;
  padding: 0.8rem 1.75rem;
  background: var(--ink);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: 100px;
  border: none;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  transition: background 0.2s, transform 0.15s;
}

.hcs-btn-primary:hover { background: var(--clay); transform: translateY(-1px); }

/* ──────────────────────────────────────────────────────
   CASE STUDIES PAGE
────────────────────────────────────────────────────── */
.cs-page-hero {
  padding: 4rem 3rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.cs-page-grid {
  padding: 1rem 3rem 5rem;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.cs-full-card {
  background: var(--paper);
  border-radius: var(--radius-xl);
  border: 1px solid var(--sand);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1fr;
  cursor: pointer;
  transition: transform 0.22s, box-shadow 0.22s;
}

.cs-full-card:hover { transform: translateY(-4px); box-shadow: 0 20px 60px rgba(0,0,0,0.09); }
.cs-full-card.flip { direction: rtl; }
.cs-full-card.flip > * { direction: ltr; }

.cs-full-thumb {
  min-height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.cs-full-body {
  padding: 3rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.cs-num {
  font-family: 'Playfair Display', serif;
  font-size: 4rem;
  font-weight: 300;
  color: var(--clay-lt);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.cs-full-name {
  font-family: 'Playfair Display', serif;
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: -0.025em;
  color: var(--ink);
  line-height: 1.15;
  margin-bottom: 0.75rem;
}

.cs-role-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clay-dk);
  background: var(--clay-lt);
  padding: 0.25rem 0.75rem;
  border-radius: 6px;
  margin-bottom: 1.25rem;
}

.cs-full-desc {
  font-size: 0.95rem;
  color: var(--ink-3);
  line-height: 1.75;
  font-weight: 300;
  margin-bottom: 1.5rem;
}

.cs-meta { display: flex; gap: 2rem; margin-bottom: 2rem; }
.cs-meta-label { font-size: 0.7rem; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 0.15rem; }
.cs-meta-val { font-size: 0.9rem; font-weight: 400; color: var(--ink-2); }

.cs-tags {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-bottom: 0.85rem;
}

.cs-tag {
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  background: var(--clay-lt);
  color: var(--clay-dk);
}

.cs-tag.sage { background: var(--sage-lt); color: #3A5F52; }

.cs-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--clay);
  transition: gap 0.2s;
}

.cs-full-card:hover .cs-arrow { gap: 0.6rem; }

/* Thumbnail colour classes */
.thumb-a { background: #C5D3F5; }
.thumb-b { background: #B5C8F8; }
.thumb-c { background: #8FAFF5; }

/* Detail page */
.cs-detail-hero {
  padding: 4rem 3rem 3rem;
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.cs-detail-thumb-lg {
  border-radius: var(--radius-xl);
  overflow: hidden;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cs-detail-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--ink);
  margin-bottom: 1rem;
}

.cs-detail-sub {
  font-size: 1rem;
  color: var(--ink-3);
  font-weight: 300;
  line-height: 1.75;
  margin-bottom: 2rem;
}

.cs-detail-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.meta-pill {
  background: var(--paper);
  border: 1px solid var(--sand);
  border-radius: var(--radius-md);
  padding: 1rem;
}

.meta-pill-label { font-size: 0.7rem; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase; color: var(--clay); margin-bottom: 0.3rem; }
.meta-pill-val { font-size: 0.92rem; color: var(--ink-2); font-weight: 400; }

.cs-detail-content {
  padding: 2rem 3rem 5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.cs-detail-section { margin-bottom: 3.5rem; }

.cs-detail-section h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 0.85rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--sand);
}

.cs-detail-section p {
  font-size: 0.97rem;
  color: var(--ink-2);
  font-weight: 300;
  line-height: 1.85;
  margin-bottom: 1rem;
}

.cs-detail-section ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.cs-detail-section ul li {
  font-size: 0.95rem;
  color: var(--ink-2);
  font-weight: 300;
  line-height: 1.65;
  padding-left: 1.25rem;
  position: relative;
}

.cs-detail-section ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--clay);
  font-size: 0.8rem;
}

.cs-placeholder-note {
  background: var(--clay-lt);
  border: 1.5px dashed var(--clay);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  font-size: 0.88rem;
  color: var(--clay-dk);
  line-height: 1.65;
  margin-bottom: 1.5rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--clay);
  cursor: pointer;
  margin-bottom: 2rem;
  transition: gap 0.2s;
  background: none;
  border: none;
  font-family: 'Inter', sans-serif;
}

.back-link:hover { gap: 0.65rem; }

/* ──────────────────────────────────────────────────────
   ABOUT PAGE
────────────────────────────────────────────────────── */
.about-text-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--ink);
  margin-bottom: 1.5rem;
}

.about-text-title em { font-style: italic; color: var(--clay); }

.about-body {
  font-size: 1rem;
  color: var(--ink-2);
  font-weight: 400;
  line-height: 1.85;
  margin-bottom: 2rem;
}

.about-body p + p { margin-top: 1rem; }
.about-body strong { font-weight: 500; color: var(--ink); }

/* ──────────────────────────────────────────────────────
   TIMELINE (experience)
────────────────────────────────────────────────────── */
.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0 2.5rem 1.75rem;
}

.t-tag {
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  background: var(--clay-lt);
  color: var(--clay-dk);
}

.t-tag.s { background: var(--sage-lt); color: #3A5F52; }

.client-dots { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }

.client-dots li {
  font-size: 0.92rem;
  color: var(--ink-2);
  font-weight: 300;
  line-height: 1.65;
  padding-left: 1.1rem;
  position: relative;
}

.client-dots li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--clay);
  font-size: 0.78rem;
  top: 0.08em;
}

/* ──────────────────────────────────────────────────────
   FOOTER
────────────────────────────────────────────────────── */
footer {
  background: var(--ink);
  padding: 4rem 3rem;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 4rem;
  flex-wrap: wrap;
}

.footer-logo {
  display: flex;
  align-items: center;
}

.footer-logo img {
  display: block;
  width: 180px;
  height: 180px;
  border-radius: 50%;
}

.footer-cols {
  display: flex;
  gap: 4rem;
  flex-wrap: wrap;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  align-items: flex-start;
  text-align: left;
}

.footer-col-heading {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.9);
  margin: 0 0 0.25rem;
  text-transform: uppercase;
}

.footer-link {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.45);
  text-decoration: none;
  transition: color 0.2s;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-family: inherit;
}

.footer-link:hover { color: rgba(255,255,255,0.88); }

/* ──────────────────────────────────────────────────────
   CASE STUDY V2 — Glowtastic-style detail layout
────────────────────────────────────────────────────── */
.cs-v2 {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 3rem;
}

.cs-v2-back {
  padding: 2rem 0 0.5rem;
}

.cs-v2-section {
  padding: 4rem 0;
  border-top: 1px solid var(--sand);
  scroll-margin-top: 80px;
}

.cs-v2-section:first-of-type {
  border-top: none;
  padding-top: 2rem;
}

/* Overview hero */
.cs-overview-hero {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 4rem;
  align-items: center;
  margin-bottom: 4rem;
}

.cs-overview-visual {
  border-radius: 20px;
  min-height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.cs-overview-intro {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.cs-v2-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--ink);
}

.cs-v2-sub {
  font-size: 1rem;
  color: var(--ink-3);
  font-weight: 300;
  line-height: 1.85;
}

/* Overview body */
.cs-overview-body {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 4rem;
  align-items: start;
}

/* Stage header */
.cs-stage-header {
  margin-bottom: 2.5rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--clay);
}

.cs-stage-header h2 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.55rem, 2.5vw, 2.1rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--ink);
}

/* Stage body */
.cs-stage-body {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 4rem;
  align-items: start;
}

/* Sidebar */
.cs-stage-sidebar {
  position: sticky;
  top: 88px;
}

.cs-sidebar-heading {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 0.85rem;
}

.cs-sidebar-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.cs-sidebar-link {
  font-size: 0.87rem;
  color: var(--ink-3);
  text-decoration: none;
  display: block;
  padding: 0.15rem 0;
  transition: color 0.2s;
}

.cs-sidebar-link:hover { color: var(--clay); }

/* Meta stack */
.cs-meta-stack {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.cs-meta-row {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.cs-meta-label {
  font-size: 0.67rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.cs-meta-val {
  font-size: 0.9rem;
  color: var(--ink-2);
  font-weight: 400;
  line-height: 1.55;
}

/* Content blocks */
.cs-content-block {
  margin-bottom: 2.75rem;
}

.cs-content-block:last-child { margin-bottom: 0; }

.cs-content-heading {
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
  margin-bottom: 0.85rem;
  padding-bottom: 0.45rem;
  border-bottom: 1.5px solid var(--ink);
  display: inline-block;
}

.cs-content-block p {
  font-size: 0.96rem;
  color: var(--ink-2);
  font-weight: 300;
  line-height: 1.9;
}

.cs-content-block p em { color: var(--clay); font-style: italic; }

/* Lists and tags in content */
.cs-v2-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.cs-v2-list li {
  font-size: 0.95rem;
  color: var(--ink-2);
  font-weight: 300;
  line-height: 1.65;
  padding-left: 1.35rem;
  position: relative;
}

.cs-v2-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--clay);
  font-size: 0.78rem;
  top: 0.1em;
}

.cs-v2-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

/* ── Fixed progress bar ── */
.cs-progress {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 300;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(14px);
  border-top: 1px solid rgba(91, 127, 232, 0.12);
  transition: transform 0.3s ease;
}

.cs-progress-track {
  height: 3px;
  background: var(--sand);
  overflow: hidden;
}

.cs-progress-fill {
  height: 100%;
  background: var(--clay);
  width: 0%;
  transition: width 0.1s linear;
}

.cs-progress-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 3rem;
  gap: 1rem;
}

.cs-prog-items {
  display: flex;
  flex: 1;
  align-items: center;
}

.cs-prog-item {
  flex: 1;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--ink-3);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.4rem 0.5rem;
  font-family: 'Inter', sans-serif;
  transition: color 0.2s;
  white-space: nowrap;
  text-align: center;
  border-bottom: 2px solid transparent;
}

.cs-prog-item:hover { color: var(--ink); }

.cs-prog-item.active {
  color: var(--clay);
  font-weight: 600;
  border-bottom-color: var(--clay);
}

.cs-prog-toggle {
  font-size: 0.9rem;
  color: var(--ink-3);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.3rem 0.65rem;
  border-radius: 6px;
  font-family: 'Inter', sans-serif;
  flex-shrink: 0;
  transition: color 0.2s, background 0.2s;
  line-height: 1;
}

.cs-prog-toggle:hover { color: var(--ink); background: var(--sand); }

/* ── ANIMATIONS ──────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.anim { animation: fadeUp 0.6s ease both; }
.d1 { animation-delay: 0.05s; } .d2 { animation-delay: 0.15s; }
.d3 { animation-delay: 0.25s; } .d4 { animation-delay: 0.35s; }
.d5 { animation-delay: 0.45s; }

/* ── MOBILE ──────────────────────────────────────────── */
@media (max-width: 900px) {
  nav { padding: 0 1.5rem; }
  .nav-link { padding: 0.4rem 0.6rem; font-size: 0.82rem; }
  .hero { padding: 3rem 1.5rem; }
  .home-cs-rows { padding: 2rem 1.5rem 3rem; }
  .hcs-card { grid-template-columns: 1fr; }
  .hcs-card-visual { min-height: 260px; order: -1; }
  .hcs-card-body { padding: 2rem 1.5rem; gap: 1rem; }
  .hcs-card-metrics { gap: 1.5rem; }
  .cs-full-card { grid-template-columns: 1fr; }
  .cs-full-card.flip { direction: ltr; }
  .cs-full-thumb { min-height: 240px; }
  .cs-detail-hero { grid-template-columns: 1fr; gap: 2rem; }
  .cs-detail-meta { grid-template-columns: 1fr 1fr; }
  .cs-page-hero,
  .cs-page-grid { padding-left: 1.5rem; padding-right: 1.5rem; }
  /* CS v2 responsive */
  .cs-v2 { padding: 0 1.5rem; }
  .cs-overview-hero { grid-template-columns: 1fr; gap: 2rem; }
  .cs-overview-visual { min-height: 240px; }
  .cs-overview-body { grid-template-columns: 1fr; gap: 2rem; }
  .cs-stage-body { grid-template-columns: 1fr; gap: 1.5rem; }
  .cs-stage-sidebar { position: static; }
  .cs-progress-nav { padding: 0.5rem 1.5rem; }
  .cs-prog-items { flex-wrap: wrap; }
}

@media (max-width: 600px) {
  .nav-links .nav-link:not(.nav-resume) { display: none; }
  .hero-headline { font-size: 3rem; }
  footer { gap: 2rem; }
  .footer-logo { flex: none; }
}