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

:root {
  --bg: #f5f5f0;
  --bg-secondary: #eae9e4;
  --text: #0f1117;
  --text-secondary: #4a5068;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-glow: rgba(37, 99, 235, 0.25);
  --border: #dddbd4;
  --nav-bg: rgba(245, 245, 240, 0.88);
  --card-bg: #ffffff;
  --mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --transition: 0.25s ease;
  --dot-color: rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] {
  --bg: #0d0f14;
  --bg-secondary: #161922;
  --text: #e2e4ef;
  --text-secondary: #7a80a0;
  --accent: #4f8ef7;
  --accent-hover: #7aaeff;
  --accent-glow: rgba(79, 142, 247, 0.3);
  --border: #2a2e3d;
  --nav-bg: rgba(13, 15, 20, 0.92);
  --card-bg: #161922;
  --dot-color: rgba(255, 255, 255, 0.06);
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background-color: var(--bg);
  background-image: radial-gradient(var(--dot-color) 1px, transparent 1px);
  background-size: 24px 24px;
  transition: background-color var(--transition), color var(--transition);
}

[data-theme="dark"] body {
  background-image:
    radial-gradient(var(--dot-color) 1px, transparent 1px),
    radial-gradient(ellipse at 50% 0%, rgba(79, 142, 247, 0.07) 0%, transparent 50%);
  background-size: 24px 24px, 100% 100%;
}

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

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

/* ===== Decorative Separator ===== */
.separator {
  display: block;
  width: 40px;
  height: 2px;
  background: var(--accent);
  border: none;
  border-radius: 1px;
  margin: 2.5rem auto;
  opacity: 0.5;
}

/* ===== Navigation ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), border-color var(--transition);
}

.nav-inner {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-name {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 40%;
  border: 1.5px solid var(--border);
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color var(--transition);
}

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

.nav-links a.active {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
}

.nav-links .lang-switch {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.nav-links .lang-switch:hover {
  border-color: var(--accent);
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 1.1rem;
  padding: 4px;
  display: flex;
  align-items: center;
  transition: color var(--transition);
}

.theme-toggle:hover {
  color: var(--text);
}

/* ===== Layout ===== */
.container {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

main.container {
  padding-top: 80px;
  padding-bottom: 2.5rem;
  min-height: calc(100vh - 56px);
}

/* ===== Hero (Homepage) ===== */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 2.5rem 0 0;
}

.hero-photo {
  width: 144px;
  height: 144px;
  border-radius: 50%;
  object-fit: cover;
  object-position: 50% 45%;
  margin-bottom: 1rem;
  border: 3px solid var(--accent);
  box-shadow: 0 0 16px var(--accent-glow), 0 0 32px rgba(37, 99, 235, 0.08);
  transition: box-shadow var(--transition), border-color var(--transition);
}

.hero h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

.hero .subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  font-weight: 400;
  line-height: 1.5;
  margin-bottom: 0.125rem;
}

.hero .subtitle a {
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  transition: color var(--transition), border-color var(--transition);
}

.hero .subtitle a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.hero .location {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
  margin-bottom: 1.5rem;
}

.location-icon {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.social-links {
  display: flex;
  gap: 0.75rem;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border: 1.5px solid transparent;
  transition: all var(--transition);
}

.social-links a:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: scale(1.08);
  box-shadow: 0 0 12px var(--accent-glow);
}

.social-links svg {
  width: 20px;
  height: 20px;
}

/* ===== Intro section ===== */
.intro {
  margin-top: 2.5rem;
  text-align: center;
}

.intro-lead {
  font-size: 1.3rem;
  line-height: 1.5;
  color: var(--text-secondary);
  max-width: 50ch;
  margin: 0 auto 1.25rem;
}

.intro-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  list-style: none;
  margin-bottom: 1.25rem;
}

.intro-pills li {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 100px;
  padding: 0.3rem 0.85rem;
  letter-spacing: 0.01em;
}

.intro-proof {
  font-size: 0.9rem;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

/* ===== Focus Areas ===== */
.focus-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.focus-item {
  padding: 1.25rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
  transition: border-color var(--transition), background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.focus-item:hover {
  cursor: default;
}

.focus-item svg {
  width: 22px;
  height: 22px;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.focus-item h3 {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 0.25rem;
}

.focus-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== Highlights / Stats ===== */
.highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.highlight {
  text-align: center;
  padding: 1.5rem 1rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

.highlight .number {
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.highlight .label {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ===== CTA Section ===== */
.cta {
  text-align: center;
  margin-top: 2.5rem;
  padding: 2.5rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
}

.cta h2 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.cta p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.cta-button {
  display: inline-block;
  padding: 0.75rem 2rem;
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition);
}

.cta-button:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px var(--accent-glow);
}

/* ===== Page Content ===== */
.page-header {
  margin-bottom: 1.25rem;
}

.page-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.content h2 {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.content h2:first-child {
  margin-top: 0;
}

.focus-areas + .content,
.highlights + .content,
.content + .focus-areas,
.content + .highlights {
  margin-top: 2.5rem;
}

.content p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.8;
}

.content ul, .content ol {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.content li {
  margin-bottom: 0.5rem;
  line-height: 1.7;
}

.content strong {
  color: var(--text);
  font-weight: 600;
}

/* ===== Contact items ===== */
.contact-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: all var(--transition);
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.contact-item:hover {
  border-color: var(--accent);
  color: inherit;
}

.contact-item svg {
  width: 20px;
  height: 20px;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.contact-item .contact-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-item .contact-value {
  font-size: 0.95rem;
  color: var(--text);
}

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
  transition: border-color var(--transition);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--text-secondary);
  transition: color var(--transition);
}

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

/* ===== Responsive ===== */
@media (max-width: 640px) {
  .hero h1 {
    font-size: 1.6rem;
  }

  .hero .subtitle {
    font-size: 0.95rem;
  }

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

  .highlights {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .highlight {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    justify-content: center;
    padding: 1rem;
  }

  .highlight .label {
    margin-top: 0;
  }

  .nav-links {
    gap: 0.75rem;
  }

  .nav-links a {
    font-size: 0.8rem;
  }
}

/* ===== Animations ===== */
@media (prefers-reduced-motion: no-preference) {
  .hero, .content, .page-header, .cta, .focus-areas, .highlights, .contact-list {
    animation: fadeUp 0.5s ease both;
  }

  @keyframes fadeUp {
    from {
      opacity: 0;
      transform: translateY(12px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}