:root, [data-theme="dark"] {
  --bg: #0d1117;
  --bg-elevated: #161b22;
  --border: #30363d;
  --text: #c9d1d9;
  --text-muted: #8b949e;
  --accent: #58a6ff;
  --accent-hover: #79b8ff;
  --success-bg: #064e3b;
  --success-fg: #34d399;
  --warn-bg: #1f2937;
  --warn-fg: #fbbf24;
  --danger-fg: #ef4444;
  --code-fg: #7ee787;
  --term-bg: #0d1117;
  --term-fg: #c9d1d9;
  --shadow: rgba(0,0,0,0.4);
}

[data-theme="light"] {
  --bg: #ffffff;
  --bg-elevated: #f6f8fa;
  --border: #d0d7de;
  --text: #1f2328;
  --text-muted: #656d76;
  --accent: #0969da;
  --accent-hover: #0550ae;
  --success-bg: #dafbe1;
  --success-fg: #116329;
  --warn-bg: #fff8c5;
  --warn-fg: #7d4e00;
  --danger-fg: #cf222e;
  --code-fg: #0550ae;
  --term-bg: #ffffff;
  --term-fg: #1f2328;
  --shadow: rgba(0,0,0,0.12);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: inherit;
}

.brand-logo {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--accent), #a371f7);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.7rem;
  color: #fff;
  letter-spacing: -0.5px;
}

.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name { font-weight: 700; font-size: 1rem; color: var(--accent); }
.brand-version { font-size: 0.7rem; color: var(--text-muted); }

.topbar-actions { display: flex; align-items: center; gap: 0.5rem; }

.btn {
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  font-size: 0.85rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); color: #fff; }

.icon-btn {
  width: 32px;
  height: 32px;
  padding: 0;
  justify-content: center;
  border-radius: 6px;
}

.icon-link svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.article-main {
  max-width: 720px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}
.article-main h1 {
  font-size: 1.55rem;
  line-height: 1.3;
  margin-bottom: 0.75rem;
  color: var(--text);
}
.article-main h2 {
  font-size: 1.05rem;
  margin: 1.5rem 0 0.5rem;
  color: var(--text);
}
.article-main p, .article-main li {
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 0.75rem;
}
.article-main ul, .article-main ol {
  padding-left: 1.25rem;
  margin-bottom: 0.75rem;
}
.article-main code, .article-main pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
}
.article-main pre {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem 1rem;
  overflow-x: auto;
  margin: 0.75rem 0 1rem;
  color: var(--code-fg);
}
.article-main a { color: var(--accent); }
.article-lead { font-size: 1.02rem; color: var(--text); }
.article-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.25rem 0;
}
.article-card-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.article-card-list li {
  margin-bottom: 0.65rem;
}
.article-card-list a {
  display: block;
  padding: 0.85rem 1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
  color: var(--text);
}
.article-card-list a:hover {
  border-color: var(--accent);
}
.article-card-list span {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}
.article-disclaimer {
  font-size: 0.85rem;
  border-left: 3px solid var(--warn-fg);
  padding-left: 0.75rem;
  margin: 1.5rem 0;
}

.copy-row {
  display: flex;
  align-items: stretch;
  gap: 0.35rem;
  margin-top: 0.35rem;
}
.copy-row + .copy-row { margin-top: 0.5rem; }

.copy-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  min-width: 4.5rem;
  padding-top: 0.45rem;
}

.copy-field {
  flex: 1;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.8rem;
  padding: 0.4rem 0.5rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--code-fg);
  word-break: break-all;
  user-select: all;
}

.copy-btn.copied { border-color: var(--success-fg); color: var(--success-fg); }

/* Disclaimer modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}
.modal-overlay.hidden { display: none; }

.modal {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  max-width: 480px;
  width: 100%;
  padding: 1.5rem;
  box-shadow: 0 8px 32px var(--shadow);
}
.modal h2 { font-size: 1.1rem; margin-bottom: 0.75rem; color: var(--accent); }
.modal p { font-size: 0.9rem; line-height: 1.5; color: var(--text-muted); margin-bottom: 0.75rem; }
.modal .btn-primary { width: 100%; justify-content: center; margin-top: 0.5rem; padding: 0.6rem; }