:root {
  --bg: #ffffff;
  --bg-soft: #f6f8fa;
  --fg: #1f2328;
  --fg-muted: #59636e;
  --border: #d1d9e0;
  --accent: #0969da;
  --mark: #fff3c4;
  --mark-fg: #4b3b00;
  --radius: 6px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --bg-soft: #151b23;
    --fg: #e6edf3;
    --fg-muted: #9198a1;
    --border: #3d444d;
    --accent: #4493f8;
    --mark: #4a3c00;
    --mark-fg: #f5e6a8;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
}

.wrap {
  max-width: 62rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

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

/* Masthead ---------------------------------------------------------------- */

.masthead {
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
  padding: 2rem 0 1rem;
  margin-bottom: 1.5rem;
}

.masthead h1 {
  margin: 0;
  font-size: 1.6rem;
  letter-spacing: -0.01em;
}

.tagline {
  margin: 0.25rem 0 1.25rem;
  color: var(--fg-muted);
}

.search { position: relative; }

.search input {
  width: 100%;
  padding: 0.7rem 2.5rem 0.7rem 0.85rem;
  font-size: 1rem;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.search input:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}

.search input:focus + .hint { display: none; }

.hint {
  position: absolute;
  right: 0.6rem;
  top: 50%;
  transform: translateY(-50%);
  padding: 0.1rem 0.4rem;
  font-size: 0.75rem;
  color: var(--fg-muted);
  border: 1px solid var(--border);
  border-radius: 4px;
}

.syntax {
  margin: 0.5rem 0 0;
  font-size: 0.82rem;
  color: var(--fg-muted);
}

.syntax code {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.05rem 0.3rem;
  font-size: 0.95em;
}

/* Tag chips --------------------------------------------------------------- */

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.9rem;
}

.chip {
  font: inherit;
  font-size: 0.82rem;
  padding: 0.15rem 0.6rem;
  color: var(--fg-muted);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
}

.chip:hover { border-color: var(--accent); color: var(--accent); }

.chip[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.chip .n { opacity: 0.7; margin-left: 0.3rem; }

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.count, .sort {
  margin: 0;
  font-size: 0.85rem;
  color: var(--fg-muted);
}

.sort select {
  font: inherit;
  font-size: 0.85rem;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.2rem 0.35rem;
  margin-left: 0.3rem;
}

/* Results ----------------------------------------------------------------- */

.results {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.entry {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1.1rem;
  background: var(--bg);
}

.entry:hover { border-color: var(--accent); }

.entry h2 {
  margin: 0 0 0.2rem;
  font-size: 1.05rem;
  line-height: 1.35;
}

.meta {
  margin: 0;
  font-size: 0.85rem;
  color: var(--fg-muted);
}

.notes {
  margin: 0.5rem 0 0;
  font-size: 0.9rem;
}

.entry .tags { margin-top: 0.6rem; }

.actions {
  margin-top: 0.6rem;
  display: flex;
  gap: 0.9rem;
  font-size: 0.82rem;
}

.actions button {
  font: inherit;
  font-size: 0.82rem;
  padding: 0;
  color: var(--accent);
  background: none;
  border: none;
  cursor: pointer;
}

.actions button:hover { text-decoration: underline; }

mark {
  background: var(--mark);
  color: var(--mark-fg);
  border-radius: 2px;
  padding: 0 0.1em;
}

.empty {
  color: var(--fg-muted);
  text-align: center;
  padding: 2.5rem 0;
}

.empty button {
  font: inherit;
  color: var(--accent);
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: underline;
}

.footer {
  margin: 2.5rem auto;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
  color: var(--fg-muted);
}

.footer p { margin: 0.2rem 0; }

/* Preview ----------------------------------------------------------------- */

.preview {
  width: min(60rem, 92vw);
  height: 88vh;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--fg);
  overflow: hidden;
}

.preview::backdrop { background: rgb(0 0 0 / 0.55); }

.preview-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-soft);
  font-size: 0.9rem;
}

.preview-actions {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  font-size: 0.85rem;
  white-space: nowrap;
}

.preview-actions button {
  font: inherit;
  font-size: 1.3rem;
  line-height: 1;
  color: var(--fg-muted);
  background: none;
  border: none;
  cursor: pointer;
}

.preview iframe {
  width: 100%;
  height: calc(88vh - 3rem);
  border: 0;
}

@media (max-width: 34rem) {
  .toolbar { align-items: flex-start; flex-direction: column; gap: 0.4rem; }
}