/* PIQOS AI Research (Public) -- docs site stylesheet.
   Plain CSS, no framework, no build step -- matches the zero-runtime-
   dependency ethos of every tools/* package in this repo. Light theme
   is the default token set; dark theme redefines the same tokens under
   prefers-color-scheme so the whole page stays legible either way. */

:root {
  --bg: #fdfdfb;
  --bg-raised: #ffffff;
  --text: #1c1e1f;
  --text-muted: #55595c;
  --border: #dedad2;
  --accent: #2b4d47;
  --accent-strong: #17332e;
  --link: #1f5f52;
  --link-visited: #4a4470;
  --code-bg: #f1efe8;
  --shadow: 0 1px 2px rgba(20, 20, 15, 0.06);
  --tag-bg: #eef1e9;
  --tag-text: #33513f;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171a;
    --bg-raised: #1b1f22;
    --text: #e9e7e0;
    --text-muted: #a3a9ac;
    --border: #33383c;
    --accent: #7fbfae;
    --accent-strong: #a7d8cb;
    --link: #86cdbb;
    --link-visited: #b9a9e0;
    --code-bg: #23282c;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
    --tag-bg: #212a26;
    --tag-text: #9fcabb;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
}

a {
  color: var(--link);
}

a:visited {
  color: var(--link-visited);
}

code {
  background: var(--code-bg);
  border-radius: 4px;
  padding: 0.1em 0.35em;
  font-size: 0.92em;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

header.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 0.9rem 1.25rem;
}

.header-inner {
  max-width: 920px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
}

.site-title {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}

nav.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.92rem;
}

nav.site-nav a {
  color: var(--text-muted);
  text-decoration: none;
}

nav.site-nav a:hover {
  color: var(--link);
}

.search-wrap {
  margin-left: auto;
  flex: 1 1 200px;
  max-width: 260px;
}

#search {
  width: 100%;
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-raised);
  color: var(--text);
  font-size: 0.9rem;
}

main {
  max-width: 920px;
  margin: 0 auto;
  padding: 1.75rem 1.25rem 4rem;
}

.intro {
  margin-bottom: 2.25rem;
}

.intro h1 {
  font-size: 1.7rem;
  margin: 0 0 0.6rem;
}

.intro p {
  color: var(--text-muted);
  max-width: 68ch;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.9rem;
}

.pill-row a {
  font-size: 0.82rem;
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
  color: var(--text-muted);
}

.pill-row a:hover {
  color: var(--link);
  border-color: var(--link);
}

section.doc-section {
  margin-bottom: 2.75rem;
  scroll-margin-top: 4.5rem;
}

section.doc-section h2 {
  font-size: 1.25rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.4rem;
  margin-bottom: 0.4rem;
}

section.doc-section > p.section-note {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-top: 0;
  margin-bottom: 1.1rem;
  max-width: 68ch;
}

h3.subgroup {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin: 1.4rem 0 0.6rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0.85rem;
}

.card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.9rem 1rem;
  box-shadow: var(--shadow);
}

.card h4 {
  margin: 0 0 0.35rem;
  font-size: 0.98rem;
  line-height: 1.35;
}

.card h4 a {
  text-decoration: none;
}

.card h4 a:hover {
  text-decoration: underline;
}

.card p {
  margin: 0;
  font-size: 0.86rem;
  color: var(--text-muted);
}

.card .meta {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}

.tag {
  display: inline-block;
  background: var(--tag-bg);
  color: var(--tag-text);
  border-radius: 5px;
  padding: 0.05rem 0.4rem;
  font-size: 0.72rem;
  margin-right: 0.3rem;
}

.card.hidden {
  display: none;
}

footer.site-footer {
  max-width: 920px;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}

footer.site-footer p {
  max-width: 68ch;
}

.no-results {
  max-width: 920px;
  margin: 0.6rem auto 0;
  color: var(--text-muted);
  font-size: 0.88rem;
  display: none;
}

section.doc-section.hidden,
h3.subgroup.hidden,
.card-grid.hidden {
  display: none;
}

/* --- scan.html --- */

.scan-form label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 1rem 0 0.35rem;
}

.scan-form label:first-child {
  margin-top: 0;
}

#input-title {
  width: 100%;
  padding: 0.5rem 0.7rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-raised);
  color: var(--text);
  font-size: 0.95rem;
}

#input-text {
  width: 100%;
  min-height: 260px;
  padding: 0.8rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-raised);
  color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88rem;
  line-height: 1.5;
  resize: vertical;
}

.scan-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.9rem;
}

.btn {
  font: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.55rem 1.1rem;
  border-radius: 8px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fdfdfb;
  cursor: pointer;
}

.btn:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover {
  border-color: var(--link);
  color: var(--link);
  background: transparent;
}

#file-input {
  font-size: 0.85rem;
  color: var(--text-muted);
}

#status {
  font-size: 0.85rem;
  color: var(--text-muted);
  min-height: 1.2em;
}

#status.error {
  color: #b5433a;
}

@media (prefers-color-scheme: dark) {
  #status.error {
    color: #e58a80;
  }
}

.privacy-note {
  font-size: 0.85rem;
  color: var(--text-muted);
  background: var(--tag-bg);
  border-radius: 8px;
  padding: 0.6rem 0.9rem;
  margin: 1rem 0;
  max-width: 68ch;
}

#downloads {
  margin: 1.2rem 0;
  display: flex;
  gap: 0.6rem;
}

#report {
  border-top: 1px solid var(--border);
  padding-top: 1.2rem;
  margin-top: 1.2rem;
}

#report h2 {
  font-size: 1.15rem;
  margin-top: 1.6rem;
}

#report h3 {
  font-size: 1.02rem;
  margin-top: 1.3rem;
  margin-bottom: 0.4rem;
}

#report h4 {
  font-size: 0.95rem;
  margin-top: 1.1rem;
  margin-bottom: 0.3rem;
}

#report p {
  margin: 0.4rem 0;
}

#report ul {
  margin: 0.3rem 0 0.3rem 1.1rem;
  padding: 0;
}

#report li {
  margin: 0.25rem 0;
  font-size: 0.92rem;
}

#report code {
  font-size: 0.85em;
}