/* ============================================
   Portfolio: base styles
   Monochrome (white / near-black) + international orange accent
   ============================================ */

:root {
  --bg: #ffffff;
  --bg-alt: #f5f5f5;
  --surface: #ffffff;
  --text: #111111;
  --text-muted: #6e6e6e;
  --border: #e6e6e6;
  --accent: #ff4f00;
  --accent-hover: #cc3f00;
  --accent-soft: #ffe4d6;

  --dark-bg: #0d0d0d;
  --dark-surface: #1a1a1a;
  --dark-text: #ffffff;
  --dark-text-muted: #a8a8a8;
  --dark-border: #2b2b2b;

  --radius: 14px;
  --max-width: 980px;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Nav ---------- */

.site-nav {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 20;
}

.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  padding-bottom: 18px;
}

.site-nav .logo {
  font-weight: 800;
  font-size: 1.05rem;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.site-nav .nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav .nav-links a {
  text-decoration: none;
  font-size: 0.95rem;
  color: var(--text-muted);
  transition: color 0.15s ease;
}

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

.site-nav .nav-cta {
  background: var(--accent);
  color: #fff !important;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
}

.site-nav .nav-cta:hover {
  background: var(--accent-hover);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--text);
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: transparent;
  border-color: var(--text);
  color: var(--text);
  border-width: 1.5px;
}

.btn-secondary:hover {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

/* ---------- Hero ---------- */

.hero {
  padding: 104px 0 80px;
}

.hero .eyebrow {
  display: flex;
  align-items: center;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 20px;
}

.hero .eyebrow::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--accent);
  margin-right: 10px;
}

.hero h1 {
  font-size: clamp(2.6rem, 6.5vw, 4.8rem);
  font-weight: 800;
  line-height: 1.05;
  margin: 0 0 24px;
  letter-spacing: -0.03em;
  max-width: 920px;
}

.hero h1 .accent-text {
  color: var(--accent);
}

.hero p.lede {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 0 36px;
}

.hero .actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* ---------- Section headings ---------- */

.section {
  padding: 64px 0;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 32px;
  gap: 16px;
  flex-wrap: wrap;
}

.section-head h2 {
  font-size: 1.8rem;
  font-weight: 800;
  margin: 0;
  letter-spacing: -0.02em;
}

.section-head .view-all {
  font-size: 0.9rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  white-space: nowrap;
}

/* ---------- Case study cards ---------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.12);
}

.card .card-cover {
  position: relative;
  aspect-ratio: 16 / 10;
  background: var(--bg-alt);
  overflow: hidden;
}

.card .card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.card:hover .card-cover img {
  transform: scale(1.05);
}

.card-body {
  padding: 20px 22px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.card-cover .card-tags {
  position: absolute;
  left: 14px;
  bottom: 14px;
  z-index: 2;
}

.tag {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--accent-soft);
  color: var(--accent-hover);
  padding: 3px 9px;
  border-radius: 999px;
  font-weight: 700;
}

.card-cover .tag {
  background: rgba(13, 13, 13, 0.72);
  color: #fff;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  flex: 1;
}

.card .read-more {
  margin-top: 16px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent);
}

/* ---------- Dark section variant ---------- */

.section-dark {
  background: var(--dark-bg);
  color: var(--dark-text);
}

.section-dark .section-head h2 {
  color: var(--dark-text);
}

/* ---------- Case study detail ---------- */

.case-hero {
  padding: 56px 0 32px;
  border-bottom: 1px solid var(--border);
}

.case-hero .tags {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.case-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin: 0 0 16px;
  letter-spacing: -0.02em;
}

.case-hero .summary {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 700px;
}

.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  margin-top: 28px;
}

.case-meta div span {
  display: block;
}

.case-meta .label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.case-meta .value {
  font-weight: 600;
  font-size: 0.95rem;
}

.case-cover {
  margin: 40px 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-alt);
}

.case-body {
  max-width: 760px;
  margin: 0 auto;
  padding-bottom: 64px;
  font-size: 1.02rem;
}

.case-body h2 {
  font-size: 1.4rem;
  margin: 2.2em 0 0.7em;
  letter-spacing: -0.01em;
}

.case-body h3 {
  font-size: 1.15rem;
  margin: 1.8em 0 0.6em;
}

.case-body p {
  margin: 0 0 1.2em;
  color: var(--text);
}

.case-body img {
  border-radius: var(--radius);
  margin: 1.8em 0;
}

.case-body ul,
.case-body ol {
  margin: 0 0 1.2em;
  padding-left: 1.3em;
}

.case-body li {
  margin-bottom: 0.4em;
}

.case-body blockquote {
  border-left: 3px solid var(--accent);
  margin: 1.8em 0;
  padding: 0.2em 0 0.2em 1.2em;
  color: var(--text-muted);
  font-style: italic;
}

.case-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.8em 0;
  font-size: 0.95rem;
}

.case-body th,
.case-body td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.case-body th {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 700;
}

.case-body td {
  font-weight: 600;
}

.case-nav {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}

.case-nav a {
  text-decoration: none;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.95rem;
}

.state-message {
  padding: 60px 0;
  text-align: center;
  color: var(--text-muted);
}

/* ---------- CV page ---------- */

.cv-header {
  padding: 72px 0 40px;
  text-align: left;
}

.cv-header h1 {
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  margin: 0 0 14px;
  letter-spacing: -0.02em;
}

.cv-header p {
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 0 28px;
}

.cv-embed {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  margin-bottom: 64px;
}

.cv-embed iframe {
  width: 100%;
  height: 80vh;
  border: none;
  display: block;
}

.cv-fallback {
  padding: 48px 24px;
  text-align: center;
  color: var(--text-muted);
}

/* ---------- Contact section ---------- */

.contact-section {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 72px 0;
  text-align: center;
}

.contact-section h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  margin: 0 0 14px;
  letter-spacing: -0.01em;
}

.contact-section p {
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto 28px;
}

/* ---------- Footer ---------- */

.site-footer {
  padding: 32px 0 48px;
}

.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.site-footer p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.site-footer .footer-links {
  display: flex;
  gap: 18px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer .footer-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.85rem;
}

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

/* ---------- Responsive ---------- */

@media (max-width: 720px) {
  .nav-toggle {
    display: block;
  }

  .site-nav .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 20px;
    display: none;
  }

  .site-nav .nav-links.open {
    display: flex;
  }

  .site-nav .nav-links li {
    width: 100%;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
  }

  .site-nav .nav-links li:last-child {
    border-bottom: none;
    padding-top: 14px;
  }

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

  .hero {
    padding: 56px 0 48px;
  }

  .case-meta {
    gap: 18px;
  }
}