:root {
  --bg: #0f1115;
  --bg-elevated: #171a21;
  --bg-card: #1c1f27;
  --border: #2a2e38;
  --text: #e6e8ec;
  --text-muted: #9aa1ad;
  --accent: #06b6d4;
  --accent-hover: #22d3ee;
  --code-bg: #10131a;
  --success: #34d399;
  --radius: 10px;
  --max-width: 960px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

header.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
}

.brand:hover {
  text-decoration: none;
  color: var(--text);
}

.brand .logo {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), #6366f1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  color: #06121a;
  font-weight: 800;
}

nav.breadcrumbs {
  font-size: 0.9rem;
  color: var(--text-muted);
}

main {
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.25rem 1.5rem 3rem;
}

.page-title {
  font-size: 1.9rem;
  margin: 0 0 0.4rem;
}

.page-subtitle {
  color: var(--text-muted);
  margin: 0 0 2rem;
  font-size: 1rem;
}

/* Homepage cheatsheet list */
.sheet-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}

.sheet-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.sheet-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.sheet-card .icon {
  font-size: 1.6rem;
}

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

.sheet-card a.card-link {
  position: absolute;
  inset: 0;
}

.sheet-card {
  position: relative;
}

.sheet-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--success);
  background: rgba(52, 211, 153, 0.12);
  border: 1px solid rgba(52, 211, 153, 0.35);
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  width: fit-content;
}

.badge.coming-soon {
  color: var(--text-muted);
  background: rgba(154, 161, 173, 0.1);
  border-color: var(--border);
}

/* Search box */
.search-box {
  width: 100%;
  margin-bottom: 1.75rem;
}

.search-box input {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font-size: 1rem;
}

.search-box input:focus {
  outline: none;
  border-color: var(--accent);
}

.search-box input::placeholder {
  color: var(--text-muted);
}

/* Placeholder fill-in panel */
.placeholder-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem 1.25rem;
  margin-bottom: 1.75rem;
}

.placeholder-panel h2 {
  margin: 0 0 0.2rem;
  font-size: 1rem;
  color: var(--text);
}

.placeholder-panel > p {
  margin: 0 0 0.9rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.placeholder-fields {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.75rem;
}

.placeholder-fields label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.placeholder-fields input {
  padding: 0.55rem 0.7rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--code-bg);
  color: var(--text);
  font-size: 0.9rem;
}

.placeholder-fields input:focus {
  outline: none;
  border-color: var(--accent);
}

.command-row code .placeholder {
  border-bottom: 1px dashed var(--text-muted);
}

.command-row code .placeholder.filled {
  color: var(--success);
  border-bottom: 1px solid var(--success);
}

/* Command cards */
.command-list {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.command-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
}

.command-card h3 {
  margin: 0 0 0.6rem;
  font-size: 1rem;
  color: var(--text);
}

.command-row {
  display: flex;
  align-items: stretch;
  gap: 0.5rem;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.command-row code {
  flex: 1;
  min-width: 0;
  padding: 0.7rem 0.9rem;
  font-family: "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88rem;
  color: #c9f0ff;
  overflow-x: auto;
  white-space: pre;
}

.copy-btn {
  flex-shrink: 0;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0 1rem;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  border-left: 1px solid var(--border);
  transition: color 0.15s ease, background 0.15s ease;
}

.copy-btn:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

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

.no-results {
  color: var(--text-muted);
  text-align: center;
  padding: 2rem 0;
  display: none;
}

footer.site-footer {
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: center;
  padding: 1.5rem;
}

@media (max-width: 480px) {
  .page-title {
    font-size: 1.5rem;
  }
}