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

:root {
  --black:   #0f0f0f;
  --gray:    #6b6b6b;
  --light:   #f4f4f2;
  --white:   #ffffff;
  --accent:  #1a1a1a;
  --border:  #e2e2e0;

  --font-sans: "Raleway", "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Merriweather", "Georgia", serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;

  --max-width: 1100px;
  --text-width: 680px;
}

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

body {
  font-family: var(--font-serif);
  color: var(--black);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .nav-logo, .nav-links a, .btn, .link-arrow, .label,
.card-title, .tag, .case-toc a, .footer-links a, .footer-copy,
.meta-item p, .skill-group h4, .skill-group li {
  font-family: var(--font-sans);
}

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

img { display: block; max-width: 100%; }

/* ─── Typography ────────────────────────────────────────────── */
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 600; line-height: 1.1; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.4rem, 3vw, 2rem);  font-weight: 600; line-height: 1.2; letter-spacing: -0.01em; }
h3 { font-size: 1.1rem; font-weight: 600; line-height: 1.3; }
p  { font-size: 1rem; color: var(--gray); }

.label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
}

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

.text-container {
  max-width: var(--text-width);
}

section {
  padding: var(--space-lg) 0;
}

/* ─── Nav ───────────────────────────────────────────────────── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--black);
}

.nav-links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
}

.nav-links a {
  font-size: 0.9rem;
  color: var(--gray);
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active { color: var(--black); }

/* ─── Hero ──────────────────────────────────────────────────── */
.hero {
  padding: var(--space-xl) 0 var(--space-lg);
}

.hero-eyebrow {
  display: inline-block;
  margin-bottom: var(--space-md);
}

.hero h1 {
  margin-bottom: var(--space-md);
}

.hero-sub {
  font-size: 1.125rem;
  color: var(--gray);
  max-width: 520px;
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.hero-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* ─── Buttons / Links ───────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding: 0.65em 1.25em;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.18s;
  white-space: nowrap;
}

.btn-primary {
  background: var(--black);
  color: var(--white);
}

.btn-primary:hover { background: #333; }

.btn-outline {
  border: 1px solid var(--border);
  color: var(--black);
}

.btn-outline:hover { border-color: #aaa; background: var(--light); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  font-size: 0.9rem;
  font-weight: 500;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.link-arrow:hover { border-color: var(--black); }

/* ─── Project Grid ──────────────────────────────────────────── */
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-md);
}

.project-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
  background: var(--white);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.08);
}

.card-image {
  aspect-ratio: 16/10;
  background: var(--light);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: #ccc;
}

.card-body {
  padding: 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.card-tags {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  padding: 0.25em 0.6em;
  background: var(--light);
  border-radius: 4px;
  color: var(--gray);
}

.card-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--black);
  line-height: 1.3;
}

.card-desc {
  font-size: 0.88rem;
  color: var(--gray);
  line-height: 1.5;
  flex: 1;
}

.card-footer {
  margin-top: auto;
  padding-top: 0.75rem;
}

/* ─── About Page ────────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-lg);
  align-items: start;
}

.about-photo {
  aspect-ratio: 1;
  border-radius: 12px;
  background: var(--light);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: #ccc;
}

.about-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-content h2 { margin-bottom: var(--space-sm); }

.about-content p {
  margin-bottom: var(--space-sm);
  font-size: 1.05rem;
  line-height: 1.75;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.skill-group h4 {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 0.5rem;
}

.skill-group ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.skill-group li {
  font-size: 0.9rem;
  color: var(--black);
}

.divider {
  height: 1px;
  background: var(--border);
  margin: var(--space-lg) 0;
}

/* ─── Case Study ─────────────────────────────────────────────── */
.case-hero {
  padding: var(--space-xl) 0 var(--space-lg);
  border-bottom: 1px solid var(--border);
}

.case-hero .label { margin-bottom: var(--space-sm); }
.case-hero h1 { margin-bottom: var(--space-sm); }
.case-hero .hero-sub { margin-bottom: var(--space-lg); }

.case-meta {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.meta-item {}
.meta-item .label { margin-bottom: 0.3rem; }
.meta-item p { font-size: 0.95rem; color: var(--black); }

.case-cover {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--light);
  border-radius: 12px;
  overflow: hidden;
  margin: var(--space-lg) 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--gray);
}

.case-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-cover--mobile {
  width: auto;
  max-width: 412px;
  aspect-ratio: unset;
  max-height: 430px;
  margin-left: auto;
  margin-right: auto;
  border-radius: 24px;
}

.case-cover--mobile img {
  width: 100%;
  height: 430px;
  object-fit: cover;
  object-position: top;
}

/* Case study body */
.case-body {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-lg);
  align-items: start;
}

.case-toc {
  position: sticky;
  top: 80px;
}

.case-toc-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: var(--space-sm);
}

.case-toc ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.case-toc a {
  font-size: 0.88rem;
  color: var(--gray);
  transition: color 0.2s;
}

.case-toc a:hover { color: var(--black); }

.case-content section {
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--border);
}

.case-content section:first-child {
  border-top: none;
  padding-top: 0;
}

.case-content h2 {
  margin-bottom: var(--space-sm);
}

.case-content p {
  margin-bottom: var(--space-sm);
  font-size: 1rem;
  line-height: 1.75;
}

.case-content h3 {
  margin: var(--space-md) 0 var(--space-xs);
}

.insight-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.insight-card {
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.insight-card .label { margin-bottom: 0.5rem; }
.insight-card p { font-size: 0.9rem; color: var(--black); }

.image-block {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--light);
  border-radius: 8px;
  margin: var(--space-md) 0;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray);
  font-size: 0.9rem;
}

.image-block img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-block--mobile {
  aspect-ratio: unset;
  background: none;
  justify-content: center;
  max-height: 560px;
}

.image-block--mobile img {
  width: auto;
  height: 100%;
  max-height: 560px;
  max-width: 100%;
  object-fit: contain;
  border-radius: 24px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
}

.caption {
  font-size: 0.8rem;
  color: var(--gray);
  text-align: center;
  margin-top: -1rem;
  margin-bottom: var(--space-md);
}

.case-nav {
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
}

/* ─── Contact Page ──────────────────────────────────────────── */
.contact-hero {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: var(--space-md);
}

.pigeon-drawing {
  width: 220px;
  height: auto;
}

.contact-email {
  font-family: var(--font-sans);
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 500;
  color: var(--black);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.contact-email:hover { border-color: var(--black); }

/* ─── Footer ─────────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  padding: var(--space-lg) 0;
  margin-top: var(--space-lg);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer-links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
}

.footer-links a {
  font-size: 0.88rem;
  color: var(--gray);
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--black); }

.footer-copy {
  font-size: 0.82rem;
  color: var(--gray);
}

/* ─── Responsive ─────────────────────────────────────────────── */
@media (max-width: 768px) {
  :root {
    --space-lg: 2.5rem;
    --space-xl: 4rem;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .about-photo {
    max-width: 200px;
  }

  .case-body {
    grid-template-columns: 1fr;
  }

  .case-toc { display: none; }

  .case-meta { gap: var(--space-md); }

  .footer-inner { flex-direction: column; align-items: flex-start; }

  .case-nav { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .project-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
}