:root {
  --bg: #fff;
  --text: #1a1a1a;
  --muted: #666;
  --border: #e5e5e5;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --code-bg: #f5f5f5;
  --badge-bg: #f0f0f0;
  --max-width: 900px;
}

.dark {
  --bg: #0f0f0f;
  --text: #e8e8e8;
  --muted: #999;
  --border: #2a2a2a;
  --code-bg: #1e1e1e;
  --badge-bg: #1e1e1e;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Theme toggle */
#theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
  color: var(--muted);
}
#theme-toggle:hover { color: var(--text); }
#icon-sun { display: none; }
.dark #icon-moon { display: none; }
.dark #icon-sun { display: block; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
}

a { color: var(--accent); text-decoration: none; cursor: pointer; }
a:hover { text-decoration: underline; }

/* Nav */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
}
.site-header nav {
  max-width: var(--max-width);
  margin: 0 auto;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 2rem;
}
.site-header .logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  margin-right: auto;
}

/* Main */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 2rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 2rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.875rem;
}
.footer-versions {
  margin-top: 0.25rem;
  font-size: 0.75rem;
  opacity: 0.5;
}

/* Hero */
.hero {
  padding: 2rem 0 3rem;
  max-width: 640px;
}
.hero h1 {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}
.hero .tagline {
  color: var(--muted);
  font-size: 1.1rem;
  margin-bottom: 2rem;
  max-width: 520px;
}

/* Hero demo */
.hero-demo {
  margin-top: 2rem;
}
.hero-demo img {
  max-width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
}

/* Quickstart */
.quickstart {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
}
.quickstart code { font-size: 1rem; font-family: monospace; }

/* How it works */
.how-it-works {
  margin: 4rem 0 3rem;
}
.how-it-works h2 { font-size: 1.5rem; margin-bottom: 1.5rem; }
.steps { list-style: none; counter-reset: steps; display: flex; flex-direction: column; gap: 1.25rem; }
.steps li {
  counter-increment: steps;
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: 0.75rem;
  align-items: start;
}
.steps li::before {
  content: counter(steps);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--accent);
  margin-top: 0.1rem;
}

.cta { margin-top: 3rem; }

/* Button */
.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 0;
  font-size: 1rem;
  font-family: inherit;
}
.btn:hover { background: var(--accent-hover); text-decoration: none; }

/* Copy button */
.copy-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  cursor: pointer;
  color: var(--muted);
  font-family: inherit;
}
.copy-btn:hover { color: var(--text); }

/* Badges */
.badge {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background: var(--badge-bg);
  border: 1px solid var(--border);
}
.type-badge { color: var(--accent); }

/* Page header */
.page-header {
  margin-bottom: 2rem;
}
.page-header h1 { font-size: 2rem; margin-bottom: 0.25rem; }
.page-header p { color: var(--muted); }

/* Filter */
.filter-bar { margin-bottom: 1.5rem; }
.filter-bar input {
  width: 100%;
  max-width: 400px;
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
}
.filter-bar input:focus { outline: none; border-color: var(--accent); }

/* Instrument grid */
.instrument-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}
.instrument-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  color: var(--text);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: border-color 0.15s;
  cursor: pointer;
}
.instrument-card:hover { border-color: var(--accent); text-decoration: none; }
.card-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 0.5rem; }
.card-name { font-weight: 600; }
.card-meta { font-size: 0.875rem; color: var(--muted); }
.card-interfaces { display: flex; gap: 0.35rem; flex-wrap: wrap; }

/* Instrument page */
.instrument-page { max-width: 720px; }
.instrument-header { margin-bottom: 2rem; }
.instrument-meta { display: flex; gap: 0.4rem; margin-bottom: 0.75rem; flex-wrap: wrap; }
.instrument-header h1 { font-size: 2.25rem; margin-bottom: 0.25rem; }
.manufacturer { color: var(--muted); margin-bottom: 0.75rem; }
.instrument-links { display: flex; gap: 1rem; font-size: 0.9rem; }
.instrument-image { margin-bottom: 2rem; }
.instrument-image img { max-width: 100%; border-radius: 8px; border: 1px solid var(--border); }

.instrument-page section { margin-bottom: 2.5rem; }
.instrument-page h2 { font-size: 1.25rem; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 1px solid var(--border); }

/* Code blocks */
.code-block {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  margin-top: 0.5rem;
}
.code-block code { font-family: monospace; font-size: 0.95rem; flex: 1; }

/* Setup steps */
.setup-steps { list-style: none; counter-reset: steps; display: flex; flex-direction: column; gap: 1.25rem; }
.setup-steps li {
  counter-increment: steps;
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: 0.75rem;
}
.setup-steps li::before {
  content: counter(steps);
  font-weight: 700;
  color: var(--accent);
  margin-top: 0.1rem;
}
.setup-steps img { max-width: 100%; border-radius: 6px; margin-top: 0.75rem; border: 1px solid var(--border); }

/* Params table */
.params-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.params-table th { text-align: left; padding: 0.5rem 0.75rem; border-bottom: 2px solid var(--border); color: var(--muted); font-weight: 600; }
.params-table td { padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--border); vertical-align: top; }
.params-table code { font-family: monospace; background: var(--code-bg); padding: 0.1rem 0.3rem; border-radius: 3px; }

/* Packages */
.packages { display: flex; flex-direction: column; gap: 1rem; }
.package-card { border: 1px solid var(--border); border-radius: 8px; padding: 1rem; }
.pkg-header { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.5rem; }
.pkg-author { color: var(--muted); font-size: 0.875rem; }

/* Discussion */
.discussion-section { margin-top: 3rem; }

/* Quickstart section */
.quickstart-section { }

/* GitHub icon */
.github-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}
.github-icon {
  width: 16px;
  height: 16px;
  vertical-align: middle;
  opacity: 0.8;
}
.github-icon-white { display: none; }
.dark .github-icon-black { display: none; }
.dark .github-icon-white { display: inline; }

/* Copied toast */
.copied-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: #1a1a1a;
  color: #fff;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s;
}
.copied-toast.on { opacity: 1; }