:root {
  color-scheme: dark;
  --bg: #1e222a;
  --bg-soft: #252932;
  --bg-panel: #282c34;
  --line: #3e4451;
  --line-strong: #4b5263;
  --text: #abb2bf;
  --text-bright: #dcdfe4;
  --muted: #5c6370;
  --accent: #61afef;
  --accent-soft: rgba(97, 175, 239, 0.1);
  --radius: 4px;
  --page-width: 860px; /* Reduced for significant L/R margins */
  --mono: "JetBrains Mono", "Fira Code", "Cascadia Code", "Noto Sans Mono", "DejaVu Sans Mono", monospace;
  --sans: "Inter", "Segoe UI", "Noto Sans", sans-serif;

  /* Category Colors */
  --cat-crypto: #e06c75;
  --cat-converter: #98c379;
  --cat-network: #56b6c2;
  --cat-web: #d19a66;
  --cat-development: #c678dd;
  --cat-text: #e5c07b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--mono);
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
}

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

a:hover {
  text-decoration: underline;
}

header, section, footer {
  border: 1px solid var(--line);
  background: var(--bg-soft);
  margin-bottom: 24px;
  padding: 32px;
}

.site-shell {
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 48px 24px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding: 0 4px;
}

.brand {
  font-weight: bold;
  font-size: 1.2rem;
  color: var(--text-bright);
}

.nav-links {
  display: flex;
  gap: 16px;
}

.hero {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.hero h1 {
  margin: 0 0 16px 0;
  font-size: 2rem;
  color: var(--text-bright);
}

.hero p.lead {
  margin: 0 0 24px 0;
  max-width: 600px;
  font-size: 1.1rem;
}

.cta-row {
  display: flex;
  gap: 12px;
}

.hero-screenshot {
  border: 1px solid var(--line-strong);
  background: #000;
  line-height: 0;
}

.hero-screenshot img {
  width: 100%;
  display: block;
  opacity: 0.9;
}

.button {
  padding: 10px 20px;
  border: 1px solid var(--line-strong);
  background: var(--bg-panel);
  color: var(--text-bright);
  font-weight: bold;
}

.button:hover {
  background: var(--line);
  text-decoration: none;
}

.button-primary {
  border-color: var(--accent);
  color: var(--accent);
}

.section-title {
  font-weight: bold;
  font-size: 1.2rem;
  color: var(--text-bright);
  margin-bottom: 24px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.category-card {
  border: 1px solid var(--line);
  padding: 20px;
  background: var(--bg-panel);
}

.category-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.category-icon {
  width: 20px;
  height: 20px;
  filter: invert(1);
}

.category-title {
  font-weight: bold;
  font-size: 1rem;
}

.category-card[data-cat="crypto"] { border-left: 4px solid var(--cat-crypto); }
.category-card[data-cat="converter"] { border-left: 4px solid var(--cat-converter); }
.category-card[data-cat="network"] { border-left: 4px solid var(--cat-network); }
.category-card[data-cat="web"] { border-left: 4px solid var(--cat-web); }
.category-card[data-cat="development"] { border-left: 4px solid var(--cat-development); }
.category-card[data-cat="text"] { border-left: 4px solid var(--cat-text); }

.category-card[data-cat="crypto"] .category-title { color: var(--cat-crypto); }
.category-card[data-cat="converter"] .category-title { color: var(--cat-converter); }
.category-card[data-cat="network"] .category-title { color: var(--cat-network); }
.category-card[data-cat="web"] .category-title { color: var(--cat-web); }
.category-card[data-cat="development"] .category-title { color: var(--cat-development); }
.category-card[data-cat="text"] .category-title { color: var(--cat-text); }

.tool-list {
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.6;
}

.install-section pre {
  background: #16191e;
  padding: 20px;
  border: 1px solid var(--line);
  overflow-x: auto;
  margin: 16px 0;
}

.install-section code {
  color: var(--cat-converter);
}

.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.screenshot-item {
  border: 1px solid var(--line-strong);
  background: #000;
  line-height: 0;
}

.screenshot-item img {
  width: 100%;
  display: block;
  opacity: 0.9;
}

.footer {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  padding: 24px 32px;
}

@media (max-width: 800px) {
  .category-grid, .screenshot-grid {
    grid-template-columns: 1fr;
  }
  .topbar, .footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
}