/* ── Shared portfolio styles ───────────────────────────────────────────────
   Design system: editorial
   Palette: cream/burgundy/rose | Fonts: General Sans + Cormorant Garamond
   ─────────────────────────────────────────────────────────────────────── */

:root {
  --cream:    #fdf6f0;
  --ink:      #3d1020;
  --muted:    #8b3a52;
  --faint:    #c47a8a;
  --border:   #f4afc0;
  --hover-bg: #fff0f5;
}

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

html {
  font-size: 15.5px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'General Sans', 'DM Sans', sans-serif;
  background: var(--cream);
  color: var(--ink);
  line-height: 1.65;
  font-weight: 300;
  padding-top: 72px;
}

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

h1, h2, h3 { line-height: 1.2; }

/* ── Navigation ────────────────────────────────────────────────────────── */
nav {
  padding: 0 40px;
  height: 72px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--cream);
  border-bottom: 1px solid var(--border);
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  z-index: 50;
  transition:
    top    400ms cubic-bezier(0.16,1,0.3,1),
    width  400ms cubic-bezier(0.16,1,0.3,1),
    height 400ms cubic-bezier(0.16,1,0.3,1),
    border-radius 400ms cubic-bezier(0.16,1,0.3,1),
    background   300ms ease,
    box-shadow   300ms ease,
    padding      300ms ease;
  overflow: hidden;
}

nav.scrolled {
  top: 12px;
  width: 480px;
  height: 52px;
  padding: 0 20px;
  border-radius: 100px;
  background: rgba(253, 246, 240, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(244, 175, 192, 0.35);
  box-shadow: 0 4px 28px rgba(61, 16, 32, 0.08);
}

.nav-brand {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-style: italic;
  font-weight: 400;
  font-size: 1.08rem;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--ink);
}

.nav-brand::after { content: ' ✿'; font-size: 0.72em; opacity: 0.45; font-style: normal; }
.nav-brand:hover { opacity: 0.6; }

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
  transition: color 150ms;
  padding: 6px 14px;
}

.nav-links a:hover { color: var(--ink); }

/* ── Hero ───────────────────────────────────────────────────────────────── */
.hero {
  max-width: 1200px;
  margin: 20px auto 80px;
  padding: 0 60px;
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 400;
  margin-bottom: 60px;
  max-width: 900px;
  color: var(--ink);
}

.hero-image {
  width: 100%;
  height: 500px;
  background: var(--hover-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 60px;
  overflow: hidden;
}

/* ── Project Meta ───────────────────────────────────────────────────────── */
.project-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  padding: 40px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 80px;
}

.meta-item h3 {
  font-family: 'General Sans', 'DM Sans', sans-serif;
  font-size: 0.58rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 10px;
  color: var(--faint);
}

.meta-item p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.badge-tag {
  display: inline-block;
  background: var(--hover-bg);
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.78rem;
  margin-top: 10px;
}

/* ── Content ────────────────────────────────────────────────────────────── */
.content {
  max-width: 900px;
  margin: 0 auto 120px;
  padding: 0 60px;
}

.section-header {
  font-family: 'General Sans', 'DM Sans', sans-serif;
  font-size: 0.60rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 28px;
  color: var(--faint);
}

.section-header::before { content: '✿  '; color: var(--faint); font-size: 0.9em; }
.section-header::after  { content: none; }

.content h2 {
  font-size: 2.2rem;
  margin-bottom: 28px;
  font-weight: 400;
  color: var(--ink);
}

.content h3 {
  font-size: 1.45rem;
  margin: 40px 0 18px;
  font-weight: 400;
  color: var(--ink);
}

.content p {
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 24px;
  color: var(--muted);
}

.content strong {
  font-weight: 500;
  color: var(--ink);
}

.content ul {
  margin: 16px 0 20px 28px;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--muted);
}

.content ul li { margin-bottom: 10px; }

/* ── Image block ────────────────────────────────────────────────────────── */
.project-image {
  width: 100%;
  height: 500px;
  background: var(--hover-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin: 60px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 20px;
  overflow: hidden;
}

.project-image.large { height: 600px; }

.project-image-icon   { font-size: 4rem; opacity: 0.4; }

.project-image-caption {
  font-size: 0.82rem;
  color: var(--faint);
  font-style: italic;
}

/* ── Two-column ─────────────────────────────────────────────────────────── */
.two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin: 60px 0;
}

.two-column .project-image { height: 350px; }

/* ── Feature grid ───────────────────────────────────────────────────────── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin: 40px 0;
}

.feature-item {
  padding: 28px;
  background: var(--hover-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.feature-item h3 {
  font-size: 1.05rem;
  margin: 0 0 10px;
  font-weight: 500;
  color: var(--ink);
  font-family: inherit;
}

.feature-item p { font-size: 0.92rem; margin: 0; }

/* ── Callout ────────────────────────────────────────────────────────────── */
.callout {
  padding: 36px 0;
  margin: 56px 0;
}

.callout p {
  font-size: 1.15rem;
  font-style: italic;
  margin: 0;
  color: var(--ink);
  line-height: 1.75;
}

/* ── Stats grid ─────────────────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 40px 0;
}

.stat-item {
  text-align: center;
  padding: 36px 20px;
  background: var(--hover-bg);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.stat-number {
  font-size: 2.6rem;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.6;
}

/* ── Number badge ───────────────────────────────────────────────────────── */
.number-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--hover-bg);
  color: var(--muted);
  border: 1.5px solid var(--border);
  border-radius: 50%;
  font-weight: 500;
  font-size: 0.95rem;
  margin-right: 14px;
  flex-shrink: 0;
}

/* ── Persona grid (Trovr) ───────────────────────────────────────────────── */
.persona-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin: 40px 0;
}

.persona-card {
  background: var(--hover-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
}

.persona-card h3 {
  font-size: 1.3rem;
  margin-bottom: 14px;
  font-weight: 400;
  color: var(--ink);
  font-family: inherit;
  line-height: 1.3;
}

.persona-card p {
  font-size: 0.95rem;
  margin-bottom: 10px;
  color: var(--muted);
}

/* ── Learnings ──────────────────────────────────────────────────────────── */
.learnings {
  background: var(--hover-bg);
  padding: 80px 60px;
  margin-top: 120px;
  border-top: 1px solid var(--border);
}

.learnings-content { max-width: 900px; margin: 0 auto; }

.learnings-content p {
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 24px;
  color: var(--muted);
}

.learnings-content strong { font-weight: 500; color: var(--ink); }

.learnings-content h2 {
  font-size: 2rem;
  font-weight: 400;
  margin-bottom: 36px;
  color: var(--ink);
}

/* ── Side navigation ────────────────────────────────────────────────────── */
.side-nav {
  position: fixed;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.side-nav-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.side-nav-dot {
  font-size: 0.72rem;
  color: var(--border);
  transition: color 200ms ease, transform 200ms ease;
  flex-shrink: 0;
  line-height: 1;
  user-select: none;
}

.side-nav-dot::before { content: '✿'; }

.side-nav-item:hover .side-nav-dot {
  color: var(--faint);
  transform: scale(1.35) rotate(20deg);
}

.side-nav-item.active .side-nav-dot {
  color: var(--muted);
  transform: scale(1.5) rotate(0deg);
}

.side-nav-label {
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--faint);
  transition: color 200ms ease;
  white-space: nowrap;
}

.side-nav-item:hover .side-nav-label,
.side-nav-item.active .side-nav-label {
  color: var(--ink);
}

/* ── Case study navigation ──────────────────────────────────────────────── */
.cs-nav {
  border-top: 1px solid var(--border);
  padding: 0 60px;
}

.cs-nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.cs-nav-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 36px 32px;
  text-decoration: none;
  transition: background 150ms ease;
  border-right: 1px solid var(--border);
  border-radius: 0;
}

.cs-nav-item:last-child { border-right: none; }
.cs-nav-item:hover { background: var(--hover-bg); }

.cs-nav-item.next {
  text-align: right;
  align-items: flex-end;
}

.cs-nav-direction {
  font-size: 0.60rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--faint);
  display: flex;
  align-items: center;
  gap: 6px;
}

.cs-nav-item.next .cs-nav-direction { flex-direction: row-reverse; }

.cs-nav-flower {
  font-size: 0.75rem;
  opacity: 0.6;
  transition: transform 200ms ease;
}

.cs-nav-item:hover .cs-nav-flower { transform: rotate(30deg) scale(1.2); }

.cs-nav-title {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--ink);
  line-height: 1.2;
}

@media (max-width: 768px) {
  .cs-nav { grid-template-columns: 1fr; }
  .cs-nav-item { border-right: none; border-bottom: 1px solid var(--border); padding: 28px 24px; }
  .cs-nav-item:last-child { border-bottom: none; }
  .cs-nav-item.next { text-align: left; align-items: flex-start; }
  .cs-nav-item.next .cs-nav-direction { flex-direction: row; }
}

/* ── Footer ─────────────────────────────────────────────────────────────── */
footer {
  padding: 60px;
  text-align: center;
  border-top: 1px solid var(--border);
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.footer-nav a {
  color: var(--muted);
  font-weight: 400;
  font-size: 0.88rem;
  text-decoration: none;
  transition: color 150ms;
}

.footer-nav a:hover { color: var(--ink); }

footer > p {
  font-size: 0.82rem;
  color: var(--faint);
}

/* ── About page ─────────────────────────────────────────────────────────── */
.about-container {
  max-width: 720px;
  margin: 80px auto;
  padding: 0 40px;
}

.about-title {
  font-size: 2.6rem;
  font-weight: 400;
  margin-bottom: 48px;
  color: var(--ink);
  animation: fadeInUp 0.55s cubic-bezier(0.16,1,0.3,1) both;
}

.about-content {
  background: var(--hover-bg);
  border-radius: 16px;
  border: 1px solid var(--border);
  padding: 48px 52px;
  animation: fadeInUp 0.55s cubic-bezier(0.16,1,0.3,1) 0.12s both;
}

.about-content h2 {
  font-size: 1.45rem;
  margin-bottom: 24px;
  font-weight: 400;
  color: var(--ink);
  font-family: inherit;
  line-height: 1.3;
}

.about-content p {
  font-size: 1rem;
  line-height: 1.85;
  margin-bottom: 18px;
  color: var(--muted);
}

.about-content p:last-child { margin-bottom: 0; }

.highlight { color: var(--ink); font-weight: 500; }

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

/* ── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  nav { padding: 0 24px; width: 100vw; }
  nav.scrolled { width: calc(100vw - 32px); }
  .nav-links { gap: 16px; }

  .hero { padding: 0 24px; margin: 20px auto 60px; }
  .hero-title { font-size: 2.1rem; }

  .project-meta { grid-template-columns: 1fr 1fr; gap: 24px; }
  .two-column, .feature-grid, .stats-grid, .persona-grid { grid-template-columns: 1fr; }

  .content { padding: 0 24px; }
  .content h2 { font-size: 1.75rem; }

  .learnings { padding: 60px 24px; }

  .side-nav { display: none; }

  .about-container { padding: 0 24px; margin: 60px auto; }
  .about-content { padding: 36px 28px; }
}