@import url('https://fonts.googleapis.com/css2?family=Libre+Baskerville:ital,wght@0,400;0,700;1,400&family=Source+Sans+3:wght@300;400;600&display=swap');

/* ── Variables ─────────────────────────────────────────────── */
:root {
  /* Palette */
  --c-ink:          #1a1a18;   /* headlines */
  --c-body:         #2e2c29;   /* body copy */
  --c-muted:        #6b6860;   /* captions, labels */
  --c-rule:         #d4cfc6;   /* horizontal rules, borders */
  --c-bg:           #faf8f4;   /* page background */
  --c-bg-alt:       #f2ede4;   /* alternate section tint */
  --c-surface:      #ffffff;   /* card / raised surface */
  --c-accent:       #4b5563;   /* links, active states */

  /* Type */
  --font-serif:     'Libre Baskerville', Georgia, serif;
  --font-sans:      'Source Sans 3', system-ui, sans-serif;

  /* Spacing */
  --section-pad:    96px;
  --col-max:        740px;
  --site-max:       1100px;

  --ease:           0.2s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--c-body);
  background: var(--c-bg);
}

a {
  color: var(--c-accent);
  text-decoration: none;
}

a:hover { text-decoration: underline; }

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

ul { list-style: none; }

/* ── Layout ─────────────────────────────────────────────────── */
.container {
  max-width: var(--site-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Navigation ─────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: var(--c-bg);
  border-bottom: 1px solid var(--c-rule);
  z-index: 100;
}

.nav-container {
  max-width: var(--site-max);
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-ink);
}

.nav-menu {
  display: flex;
  gap: 2rem;
}

.nav-link {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--c-muted);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

.nav-link:hover {
  color: var(--c-ink);
  border-bottom-color: var(--c-ink);
  text-decoration: none;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.bar {
  width: 22px;
  height: 2px;
  background: var(--c-ink);
  border-radius: 1px;
}

/* ── Hero ───────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  background: var(--c-bg);
  border-bottom: 1px solid var(--c-rule);
  position: relative;
}

.hero-content {
  max-width: 680px;
  animation: fadeInUp 0.6s ease-out both;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--c-ink);
  letter-spacing: -0.01em;
  margin-bottom: 1.25rem;
}

.highlight {
  font-style: italic;
  color: var(--c-ink);
}

.hero-subtitle {
  font-size: 1rem;
  font-weight: 300;
  color: var(--c-muted);
  letter-spacing: 0.02em;
  line-height: 1.6;
}

.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
}

.scroll-arrow {
  width: 18px;
  height: 18px;
  border-right: 1.5px solid var(--c-rule);
  border-bottom: 1.5px solid var(--c-rule);
  transform: rotate(45deg);
}

/* ── Section titles ─────────────────────────────────────────── */
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.375rem, 3vw, 1.75rem);
  font-weight: 700;
  color: var(--c-ink);
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
}

.section-title::after {
  content: '';
  display: block;
  width: 36px;
  height: 2px;
  background: var(--c-rule);
  margin-top: 14px;
}

/* ── About ──────────────────────────────────────────────────── */
.about {
  padding: var(--section-pad) 0;
  background: var(--c-bg);
}

.about .section-title {
  text-align: center;
  margin-bottom: 2.5rem;
}

.about .section-title::after {
  margin-left: auto;
  margin-right: auto;
}

.about-text p {
  max-width: var(--col-max);
  margin: 0 auto 1.5rem;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--c-body);
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--c-rule);
  max-width: var(--col-max);
  margin: 3rem auto 0;
}

.stat-item {
  background: var(--c-surface);
  padding: 2rem 1.5rem;
  text-align: center;
  border-right: 1px solid var(--c-rule);
  transition: background var(--ease);
}

.stat-item:last-child { border-right: none; }

.stat-item:hover { background: var(--c-bg-alt); }

.stat-number {
  display: block;
  font-family: var(--font-serif);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--c-ink);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--c-muted);
}

/* ── Skills ─────────────────────────────────────────────────── */
.skills {
  padding: var(--section-pad) 0;
  background: var(--c-bg-alt);
  border-top: 1px solid var(--c-rule);
  border-bottom: 1px solid var(--c-rule);
}

.skills .section-title {
  margin-bottom: 3rem;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  border: 1px solid var(--c-rule);
}

.skill-group {
  padding: 1.75rem;
  border-right: 1px solid var(--c-rule);
  border-bottom: 1px solid var(--c-rule);
  background: var(--c-surface);
}

.skill-group-title {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--c-muted);
  margin-bottom: 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--c-rule);
}

.skill-list {
  list-style: none;
  padding: 0;
}

.skill-list li {
  font-size: 0.9375rem;
  color: var(--c-body);
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--c-bg-alt);
  line-height: 1.4;
}

.skill-list li:last-child { border-bottom: none; }

/* ── Experience ─────────────────────────────────────────────── */
.experience {
  padding: var(--section-pad) 0;
  background: var(--c-bg);
}

.experience .section-title {
  margin-bottom: 3rem;
}

.experience-grid {
  border: 1px solid var(--c-rule);
}

.experience-card {
  padding: 2.5rem 2rem 2.5rem 2.5rem;
  border-bottom: 1px solid var(--c-rule);
  position: relative;
}

.experience-card:last-child { border-bottom: none; }

.experience-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--c-rule);
  transition: background var(--ease);
}

.experience-card:hover::before { background: var(--c-accent); }

.experience-card h3 {
  font-family: var(--font-serif);
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--c-ink);
  margin-bottom: 0.2rem;
}

.experience-card .company {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--c-muted);
  margin-bottom: 0.2rem;
}

.experience-card .duration {
  font-size: 0.8125rem;
  color: var(--c-muted);
  font-style: italic;
  margin-bottom: 1.25rem;
}

.experience-card li {
  font-size: 0.9375rem;
  color: var(--c-body);
  line-height: 1.75;
  margin-bottom: 0.4rem;
  padding-left: 1.25rem;
  position: relative;
}

.experience-card li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--c-rule);
}

/* ── Projects ───────────────────────────────────────────────── */
.projects {
  padding: var(--section-pad) 0;
  background: var(--c-bg-alt);
  border-top: 1px solid var(--c-rule);
  border-bottom: 1px solid var(--c-rule);
}

.projects .section-title {
  margin-bottom: 3rem;
}

.projects-grid {
  display: grid;
  gap: 0;
  border: 1px solid var(--c-rule);
}

.project-card {
  padding: 2.25rem 2rem 2.25rem 2.5rem;
  border-bottom: 1px solid var(--c-rule);
  background: var(--c-surface);
  position: relative;
  transition: background var(--ease);
}

.project-card:last-child { border-bottom: none; }

.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px;
  height: 100%;
  background: var(--c-rule);
  transition: background var(--ease);
}

.project-card:hover { background: var(--c-bg); }
.project-card:hover::before { background: var(--c-accent); }

.project-meta {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 0.6rem;
}

.project-lang {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--c-muted);
}

.project-link {
  font-size: 0.8125rem;
  color: var(--c-accent);
  border-bottom: 1px solid transparent;
  transition: border-color var(--ease);
}

.project-link:hover {
  border-bottom-color: var(--c-accent);
  text-decoration: none;
}

.project-title {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--c-ink);
  margin-bottom: 0.75rem;
}

.project-body {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--c-body);
  margin-bottom: 1.25rem;
  max-width: 130ch;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
}

.project-tags li {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--c-muted);
  border: 1px solid var(--c-rule);
  padding: 0.2rem 0.6rem;
  background: var(--c-bg-alt);
}

/* ── Contact ────────────────────────────────────────────────── */
.contact {
  padding: var(--section-pad) 0;
  background: var(--c-bg);
}

.contact .section-title {
  margin-bottom: 3rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--c-rule);
  max-width: var(--col-max);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 0;
  border-bottom: 1px solid var(--c-rule);
  color: var(--c-body);
  text-decoration: none;
  transition: background var(--ease);
}

.contact-item:last-child { border-bottom: none; }

.contact-item:hover { background: var(--c-bg-alt); text-decoration: none; }

.contact-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--c-muted);
  padding: 1.1rem 1.5rem;
  min-width: 110px;
  border-right: 1px solid var(--c-rule);
  flex-shrink: 0;
}

.contact-value {
  font-size: 0.9375rem;
  color: var(--c-body);
  padding: 1.1rem 1.5rem;
  flex: 1;
}

.contact-item--link .contact-value {
  color: var(--c-accent);
}

/* Copy button */
.copy-btn {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--c-muted);
  background: transparent;
  border: 1px solid var(--c-rule);
  padding: 0.3rem 0.75rem;
  cursor: pointer;
  margin-right: 1.25rem;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
  flex-shrink: 0;
}

.copy-btn:hover {
  color: var(--c-ink);
  border-color: var(--c-accent);
}

.copy-btn--success {
  color: var(--c-surface);
  background: var(--c-accent);
  border-color: var(--c-accent);
}

/* ── Footer ─────────────────────────────────────────────────── */
.footer {
  padding: 2.5rem 0;
  border-top: 1px solid var(--c-rule);
  background: var(--c-bg);
}

.footer p {
  font-size: 0.8125rem;
  color: var(--c-muted);
}

/* ── Animations ─────────────────────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 768px) {
  :root { --section-pad: 64px; }

  .hamburger { display: flex; }

  .nav-menu {
    display: none;
    position: fixed;
    top: 56px;
    left: 0;
    width: 100%;
    background: var(--c-bg);
    border-bottom: 1px solid var(--c-rule);
    flex-direction: column;
    gap: 0;
  }

  .nav-menu.active { display: flex; }

  .nav-link {
    display: block;
    padding: 1rem 24px;
    border-bottom: 1px solid var(--c-rule);
    border-left: none;
  }

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

  .stat-item {
    border-right: none;
    border-bottom: 1px solid var(--c-rule);
  }

  .stat-item:last-child { border-bottom: none; }

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

  .contact-label { min-width: 80px; padding: 0.9rem 1rem; }
  .contact-value { padding: 0.9rem 1rem; }
  .copy-btn      { margin-right: 0.75rem; }

  .project-card { padding: 1.75rem 1.25rem 1.75rem 1.75rem; }
}

@media (max-width: 480px) {
  .hero-title  { font-size: 1.75rem; }
  .stat-number { font-size: 1.875rem; }
  .experience-card { padding: 1.75rem 1.25rem 1.75rem 1.75rem; }

  .contact-item { flex-wrap: wrap; }
  .contact-label { min-width: 100%; border-right: none; border-bottom: 1px solid var(--c-rule); }
  .contact-value { padding-top: 0.6rem; }
  .copy-btn { margin: 0 1rem 0.75rem; }
}