:root {
  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-text: #1a1a2e;
  --color-text-secondary: #555770;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-border: #e2e4e9;
  --color-tag-bg: #f0f4ff;
  --color-tag-text: #2563eb;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --max-width: 720px;
  --radius: 8px;
}

[data-theme="dark"] {
  --color-bg: #121220;
  --color-surface: #1a1a2e;
  --color-text: #e4e4ef;
  --color-text-secondary: #9e9eb8;
  --color-accent: #5b8def;
  --color-accent-hover: #7da8ff;
  --color-border: #2a2a40;
  --color-tag-bg: #1e2844;
  --color-tag-text: #7da8ff;
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--color-accent-hover);
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.nav-logo:hover {
  color: var(--color-accent);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
}

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

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent);
  border-radius: 1px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  margin-top: auto;
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
}

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

.footer-copy {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
}

/* Hero / About */
.hero {
  margin-bottom: 3rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.hero-content {
  flex: 1;
}

.profile-img {
  width: 160px;
  height: auto;
  border-radius: var(--radius);
  object-fit: contain;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.hero h1 {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

.hero .subtitle {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  max-width: 600px;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: all 0.2s;
}

.social-links a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-tag-bg);
}

/* Section headings */
.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-border);
}

/* Highlights grid */
.highlights {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 3rem;
}

.highlight-card {
  padding: 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
}

.highlight-card h3 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
}

.highlight-card p {
  font-size: 0.95rem;
  font-weight: 500;
}

/* CV page */
.cv-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 2rem;
}

.cv-header-content {
  flex: 1;
}

.cv-profile-img {
  width: 120px;
  height: auto;
  border-radius: var(--radius);
  object-fit: contain;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

/* Force light theme for PDF generation */
.force-light {
  --color-bg: #ffffff !important;
  --color-surface: #ffffff !important;
  --color-text: #1a1a2e !important;
  --color-text-secondary: #555770 !important;
  --color-border: #e2e4e9 !important;
  --color-tag-bg: #f0f4ff !important;
  --color-tag-text: #2563eb !important;
  background: var(--color-bg) !important;
  color: var(--color-text) !important;
}

.force-light .cv-entry {
  border-left-color: var(--color-border) !important;
}

.force-light .cv-tag {
  background: var(--color-tag-bg) !important;
  color: var(--color-tag-text) !important;
}

.force-light .cv-section h2 {
  border-bottom-color: var(--color-border) !important;
}

.force-light .cv-meta, 
.force-light .cv-contact,
.force-light .cv-entry ul {
  color: var(--color-text-secondary) !important;
}

.force-light .cv-tags {
  /* html2pdf can split flex rows awkwardly; inline flow is more stable. */
  display: block;
}

.force-light .cv-tag {
  /* Recreate spacing previously provided by flex `gap`. */
  margin: 0 0.5rem 0.5rem 0;
}

.cv-name {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
}

.cv-contact {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
}

.cv-contact a {
  color: var(--color-accent);
}

.cv-location {
  margin-top: 0.25rem;
}

.cv-entry,
.cv-section,
.cv-tags,
.cv-plain-list li {
  /* Helps html2pdf avoid splitting tag/list blocks mid-item. */
  break-inside: avoid;
  page-break-inside: avoid;
}

.cv-plain-list {
  padding-left: 1.2rem;
  color: var(--color-text-secondary);
}

.cv-plain-list li {
  margin-bottom: 0.25rem;
}

.cv-download {
  all: unset;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 2rem;
  cursor: pointer;
  transition: background 0.2s;
}

.cv-download:hover {
  background: var(--color-accent-hover);
  color: #fff;
}

.cv-download:disabled {
  opacity: 0.6;
  cursor: wait;
}

.cv-section {
  margin-bottom: 2.5rem;
}

.cv-section h2 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--color-border);
}

.cv-entry {
  margin-bottom: 1.5rem;
  padding-left: 1rem;
  border-left: 3px solid var(--color-border);
}

.cv-entry h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.15rem;
}

.cv-entry .cv-org {
  font-weight: 600;
  color: var(--color-text);
}

.cv-entry .cv-meta {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.4rem;
}

.cv-entry ul {
  padding-left: 1.2rem;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

.cv-entry ul li {
  margin-bottom: 0.25rem;
}

.cv-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.cv-tag {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
  font-size: 0.8rem;
  font-weight: 500;
  border-radius: 4px;
}

/* Skills list */
.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* Projects page */
.project-card {
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  margin-bottom: 1.25rem;
  transition: border-color 0.2s;
}

.project-card:hover {
  border-color: var(--color-accent);
}

.project-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.project-card h3 a {
  color: var(--color-text);
}

.project-card h3 a:hover {
  color: var(--color-accent);
}

.project-card p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.75rem;
}

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

.project-card .project-tag {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
  font-size: 0.78rem;
  font-weight: 500;
  border-radius: 4px;
  font-family: var(--font-mono);
}

/* Page title */
.page-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
}

.page-description {
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
  font-size: 1.05rem;
}

/* Theme toggle */
.theme-toggle {
  all: unset;
  cursor: pointer;
  width: 2.2rem;
  height: 2.2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  line-height: 1;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text-secondary);
  transition: border-color 0.2s, background 0.2s, color 0.2s;
}

  }
}
.theme-toggle:hover {
  border-color: var(--color-accent);
  background: var(--color-tag-bg);
  color: var(--color-accent);
}

/* Responsive */
@media (max-width: 600px) {
  .hero {
    flex-direction: column-reverse;
    text-align: center;
    gap: 1.5rem;
  }

  .hero p {
    margin: 0 auto;
  }

  .social-links {
    justify-content: center;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .cv-header {
    flex-direction: column-reverse;
    gap: 1rem;
    align-items: center;
    text-align: center;
  }

  .cv-profile-img {
    width: 80px;
    height: 80px;
  }

  .nav-links {
    gap: 1.25rem;
  }

  main {
    padding: 2rem 1rem;
  }

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