:root {
  --bg: #f7f8fb;
  --surface: #ffffff;
  --text: #101828;
  --muted: #667085;
  --border: #d0d5dd;
  --accent: #2563eb;
  --accent-soft: rgba(37, 99, 235, 0.12);
  --radius: 18px;
  --font: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scrollbar-gutter: stable;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  padding: 40px 90px;
}

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

.editor {
  max-width: 980px;
  margin: 0 auto;
  background: transparent;
  border: none;
  border-radius: 0;
  overflow: visible;
}

.tabs {
  display: flex;
  gap: 10px;
  padding: 10px 0;
  background: transparent;
  border-bottom: 2px solid rgba(15, 23, 42, 0.08);
}

.tab {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text);
  padding: 8px 14px;
  border-radius: 999px;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.tab:hover {
  background: var(--accent-soft);
  color: var(--accent);
  transform: translateY(-1px);
}

.tab.active {
  background: var(--accent-soft);
  color: var(--accent);
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

.page-header {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-bottom: 10px;
}

.pane {
  padding: 36px 32px 42px;
  max-width: 980px;
  margin: 0 auto;
}

.project-card h2 {
  margin: 0 0 10px;
  font-size: 1.1rem;
  color: var(--text);
}

.project-card p {
  margin: 0 0 14px;
  color: var(--muted);
  line-height: 1.8;
}

.project-links {
  display: flex;
  gap: 12px;
}

.project-link {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--accent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.project-link:hover,
.project-link:focus-visible {
  color: #1d4ed8;
  border-color: currentColor;
}

.hero-pane .content {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

h1, h2 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 3rem);
}
.site-title {
  font-size: 1.9rem;
  margin: 0 0 18px;
  font-weight: 700;
}

.page-title {
  font-size: 1.45rem;
  margin: 0 0 14px;
  font-weight: 700;
}

.hero-header {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-header h2 {
  margin: 0;
  font-size: 1.55rem;
}

.hero-header p {
  margin: 0;
  font-size: 1rem;
  color: var(--muted);
}

.overview {
  margin: 0;
  font-weight: 600;
}

.meta {
  margin: 0;
  color: var(--muted);
  max-width: 720px;
}

.skills {
  margin-top: 18px;
}

.skills h3 {
  margin: 0 0 14px;
  font-size: 1rem;
  letter-spacing: -0.01em;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skill-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.12);
  color: #1d4ed8;
  border: 1px solid rgba(37, 99, 235, 0.22);
  font-family: var(--font-mono);
  font-size: 0.95rem;
}

.contact-card {
  padding: 0;
  margin-bottom: 100px;
  background: transparent;
  border: none;
  border-radius: 0;
  box-shadow: none;
  max-width: none;
}

.project-card {
  display: block;
  width: 100%;
  padding: 22px 24px;
  margin: 18px 0;
  background: #ffffff;
  border: 1px solid #e6e8ec;
  border-radius: 20px;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.04);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.project-card:hover {
  transform: translateY(-2px);
  border-color: #cbd5e1;
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.08);
}

.contact-card p {
  margin: 0 0 18px;
  color: var(--text);
  line-height: 1.8;
  font-size: 1rem;
}

.contact-email {
  font-style: italic;
  color: #0f172a;
}

.contact-heading {
  margin-top: 12px;
  font-weight: 600;
}

.contact-list {
  margin: 12px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

.contact-list li {
  margin-bottom: 10px;
}

.contact-list a {
  color: var(--accent);
  transition: color 0.2s ease;
}

.contact-list a:hover,
.contact-list a:focus-visible {
  color: #1d4ed8;
}

.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  border-top: 1px solid var(--border);
  background: #f8fafc;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--muted);
}

.dim {
  color: var(--muted);
}

@media (max-width: 640px) {
  body {
    padding: 16px;
  }

  .editor {
    border-radius: 18px;
  }

  .tabs {
    flex-wrap: wrap;
    padding: 16px;
  }

  .pane {
    padding: 24px;
  }

  .footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}