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

:root {
  --bg: #0a0a0a;
  --fg: #e0e0e0;
  --dim: #666;
  --dim2: #444;
  --border: #222;
  --accent: #fff;
  --green: #4ade80;
  --yellow: #facc15;
  --red: #f87171;
  --blue: #60a5fa;
  --cyan: #22d3ee;
  --purple: #a78bfa;
  --orange: #fb923c;
  --surface: #111;
  --surface2: #141414;
  --mono: 'SF Mono', 'Cascadia Code', 'Fira Code', 'JetBrains Mono', monospace;
}

body {
  font-family: var(--mono);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--fg); text-decoration-color: var(--dim); text-underline-offset: 3px; }
a:hover { color: var(--accent); text-decoration-color: var(--accent); }

.container { max-width: 800px; margin: 0 auto; padding: 0 24px; }

/* Nav */
nav {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 50;
}
nav .logo { font-size: 18px; font-weight: 700; letter-spacing: -0.5px; color: var(--accent); }
nav .links { display: flex; gap: 20px; font-size: 13px; color: var(--dim); }
nav .links a.active { color: var(--accent); text-decoration-color: var(--accent); }

/* Install box */
.install-box:hover { border-color: #444 !important; }
.install-box .copied.show { opacity: 1 !important; }

/* Terminal */
.terminal {
  background: #0d0d0d; border: 1px solid var(--border);
  border-radius: 10px; margin: 24px 0; overflow: hidden;
}
.terminal-bar {
  background: var(--surface2); padding: 10px 16px;
  display: flex; align-items: center; gap: 8px;
  border-bottom: 1px solid var(--border);
}
.terminal-dot { width: 10px; height: 10px; border-radius: 50%; background: #333; }
.terminal-title { font-size: 12px; color: var(--dim); margin-left: 8px; }
.terminal-body {
  padding: 20px 24px; font-size: 13px; line-height: 1.7; overflow-x: auto;
}
.terminal-body .cmd { color: var(--accent); }
.terminal-body .g { color: var(--green); }
.terminal-body .y { color: var(--yellow); }
.terminal-body .r { color: var(--red); }
.terminal-body .d { color: var(--dim2); }
.terminal-body .b { color: var(--blue); }
.terminal-body .c { color: var(--cyan); }
.terminal-body .p { color: var(--purple); }
.terminal-body .o { color: var(--orange); }
.terminal-body .w { color: var(--accent); font-weight: 600; }

/* Sections */
section { padding: 60px 0; border-top: 1px solid var(--border); }
section h2 {
  font-size: 22px; font-weight: 600; color: var(--accent);
  margin-bottom: 12px; letter-spacing: -0.5px;
}
section .section-desc {
  font-size: 14px; color: var(--dim); margin-bottom: 32px; line-height: 1.7;
}

/* Tables */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th {
  text-align: left; padding: 10px 16px; color: var(--dim);
  font-weight: 400; border-bottom: 1px solid var(--border);
}
td { padding: 10px 16px; border-bottom: 1px solid #181818; color: var(--fg); }
tr:last-child td { border-bottom: none; }
td.win { color: var(--green); font-weight: 600; }
td.lose { color: var(--dim); }

/* Comparison table */
.comparison-table { overflow-x: auto; }
.comparison-table table { min-width: 640px; }
.comparison-table th:first-child { width: 200px; }

/* Phase cards */
.phase-cards { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.phase-card {
  padding: 20px; border: 1px solid var(--border); border-radius: 8px;
  transition: border-color 0.2s;
}
.phase-card:hover { border-color: #444; }
.phase-card h3 { font-size: 14px; color: var(--accent); margin-bottom: 8px; }
.phase-card p { font-size: 12px; color: var(--dim); line-height: 1.6; }
.phase-card .tag {
  display: inline-block; font-size: 10px; padding: 2px 8px;
  border-radius: 4px; margin-bottom: 10px; font-weight: 600;
}

/* Architecture diagram */
.arch-layer {
  padding: 16px 20px; border: 1px solid var(--border); border-radius: 8px;
  margin-bottom: 8px; display: flex; align-items: center; gap: 16px;
}
.arch-layer .label { min-width: 140px; font-size: 13px; font-weight: 600; }
.arch-layer .desc { font-size: 12px; color: var(--dim); }
.arch-arrow { text-align: center; color: var(--dim2); font-size: 16px; margin: 4px 0; }

/* Flow steps */
.flow { display: flex; flex-direction: column; gap: 0; }
.flow-step {
  display: flex; align-items: flex-start; gap: 16px; padding: 12px 0;
}
.flow-num {
  width: 28px; height: 28px; border-radius: 50%; background: var(--surface);
  border: 1px solid var(--border); display: flex; align-items: center;
  justify-content: center; font-size: 12px; color: var(--dim);
  flex-shrink: 0;
}
.flow-content { flex: 1; }
.flow-content .title { font-size: 13px; color: var(--fg); font-weight: 600; }
.flow-content .desc { font-size: 12px; color: var(--dim); margin-top: 2px; }
.flow-connector {
  width: 28px; display: flex; justify-content: center;
}
.flow-connector .line {
  width: 1px; height: 12px; background: var(--border);
}

/* MCP tool cards */
.tool-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
.tool-card {
  padding: 14px; border: 1px solid var(--border); border-radius: 6px;
}
.tool-card:hover { border-color: #444; }
.tool-card .tool-name {
  font-size: 12px; font-weight: 600; color: var(--cyan); margin-bottom: 4px;
}
.tool-card .tool-desc { font-size: 11px; color: var(--dim); line-height: 1.5; }

/* Command docs */
.cmd-doc { margin-bottom: 28px; }
.cmd-doc-header {
  display: flex; align-items: baseline; gap: 12px; margin-bottom: 6px;
}
.cmd-doc-name {
  font-size: 14px; font-weight: 600; color: var(--accent);
  background: var(--surface); padding: 4px 10px; border-radius: 4px;
}
.cmd-doc-desc { font-size: 13px; color: var(--dim); }
.cmd-doc-flags { margin-top: 8px; padding-left: 16px; }
.cmd-doc-flags .flag {
  font-size: 12px; color: var(--fg); margin-bottom: 2px;
}
.cmd-doc-flags .flag code {
  color: var(--cyan); background: none; padding: 0;
}
.cmd-doc-flags .flag span { color: var(--dim); }

/* Concept boxes */
.concept-box {
  padding: 20px; border: 1px solid var(--border); border-radius: 8px;
  margin-bottom: 16px;
}
.concept-box h4 { font-size: 14px; color: var(--accent); margin-bottom: 8px; }
.concept-box p { font-size: 13px; color: var(--dim); line-height: 1.7; }
.concept-box code { color: var(--cyan); font-size: 12px; }

/* State diagram */
.state-doc {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; padding: 20px 24px; font-size: 13px;
  line-height: 1.7; overflow-x: auto;
}

/* Blog / article styles */
.article { padding: 48px 0; }
.article-header { margin-bottom: 40px; }
.article-header h1 {
  font-size: 28px; font-weight: 700; color: var(--accent);
  letter-spacing: -1px; margin-bottom: 12px; line-height: 1.3;
}
.article-header .meta { font-size: 12px; color: var(--dim); }
.article-body h2 {
  font-size: 18px; font-weight: 600; color: var(--accent);
  margin: 40px 0 16px; letter-spacing: -0.3px;
}
.article-body h3 {
  font-size: 15px; font-weight: 600; color: var(--fg);
  margin: 28px 0 12px;
}
.article-body p {
  font-size: 14px; color: var(--dim); line-height: 1.8;
  margin-bottom: 16px;
}
.article-body p strong { color: var(--fg); }
.article-body ul, .article-body ol {
  font-size: 14px; color: var(--dim); line-height: 1.8;
  margin: 0 0 16px 24px;
}
.article-body li { margin-bottom: 4px; }
.article-body code {
  color: var(--cyan); font-size: 13px; background: var(--surface);
  padding: 1px 5px; border-radius: 3px;
}
.article-body .highlight {
  padding: 16px 20px; border-left: 3px solid var(--purple);
  background: var(--surface); border-radius: 0 8px 8px 0;
  margin: 20px 0; font-size: 13px; color: var(--dim); line-height: 1.7;
}
.article-body .highlight strong { color: var(--accent); }

/* Article listing */
.article-card {
  padding: 24px; border: 1px solid var(--border); border-radius: 8px;
  margin-bottom: 16px; transition: border-color 0.2s; display: block;
  text-decoration: none;
}
.article-card:hover { border-color: #444; text-decoration: none; }
.article-card h3 { font-size: 15px; color: var(--accent); margin-bottom: 6px; }
.article-card p { font-size: 12px; color: var(--dim); line-height: 1.6; }
.article-card .tag-row { margin-top: 10px; display: flex; gap: 8px; }
.article-card .tag-row .tag {
  font-size: 10px; padding: 2px 8px; border-radius: 4px; font-weight: 600;
}

/* Stat cards */
.stat-row { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 12px; }
.stat-card {
  padding: 20px; border: 1px solid var(--border); border-radius: 8px;
  text-align: center;
}
.stat-card .stat-value { font-size: 28px; font-weight: 700; letter-spacing: -1px; }
.stat-card .stat-label { font-size: 11px; color: var(--dim); margin-top: 4px; text-transform: uppercase; letter-spacing: 0.5px; }

/* Footer */
footer {
  padding: 40px 0; border-top: 1px solid var(--border);
  text-align: center; font-size: 12px; color: var(--dim);
}

@media (max-width: 640px) {
  .phase-cards { grid-template-columns: 1fr; }
  .tool-grid { grid-template-columns: 1fr; }
  nav .links { gap: 12px; font-size: 12px; }
  .arch-layer { flex-direction: column; gap: 8px; }
  .arch-layer .label { min-width: auto; }
  .stat-row { grid-template-columns: 1fr 1fr; }
}