/* Standalone stylesheet for help.html. Deliberately independent of base.css:
   the app shell relies on `body { height:100%; overflow:hidden }` for its
   fixed single-screen layout, which would break a normal scrolling document.
   Color tokens below mirror the app's tokens in css/base.css. */

:root {
  color-scheme: light;
  --bg: #f7f8fb;
  --panel: #ffffff;
  --text: #172033;
  --muted: #647086;
  --border: #d9dee8;
  --accent: #2563eb;
  --accent_strong: #1d4ed8;
  --accent_soft: #e7efff;
  --logo_teal: #01a5af;
  --logo_blue: #072c67;
  --success: #059669;
  --restart: #dc2626;
  --code_bg: #eef1f8;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

code {
  background: var(--code_bg);
  border-radius: 4px;
  padding: 0.1em 0.4em;
  font-size: 0.92em;
}

kbd {
  background: var(--panel);
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 0.05em 0.5em;
  font-size: 0.85em;
  font-family: inherit;
}

/* ── Header ─────────────────────────────────────────────────────────────── */

.help_header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}

.help_header_logo {
  height: 34px;
  width: auto;
}

.help_header_title {
  flex: 1;
  font-weight: 800;
  color: var(--logo_blue);
  font-size: 1.05rem;
}

.help_back_link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--logo_teal);
  background: var(--logo_teal);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  white-space: nowrap;
}

.help_back_link:hover {
  filter: brightness(0.9);
}

/* ── Layout: sticky TOC + content column ───────────────────────────────── */

.help_layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 800px);
  justify-content: center;
  gap: 40px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 24px 80px;
  align-items: start;
}

.help_toc {
  position: sticky;
  top: 70px;
  align-self: start;
  font-size: 0.88rem;
}

.help_toc nav {
  border-left: 2px solid var(--border);
  padding-left: 14px;
}

.help_toc p.toc_label {
  margin: 0 0 8px;
  font-weight: 800;
  color: var(--muted);
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
}

.help_toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

.help_toc li {
  margin: 2px 0;
}

.help_toc a {
  display: block;
  padding: 3px 0;
  color: var(--muted);
  text-decoration: none;
}

.help_toc a:hover {
  color: var(--accent_strong);
}

.help_toc ol ol {
  padding-left: 14px;
  margin-bottom: 4px;
}

/* ── Content ────────────────────────────────────────────────────────────── */

.help_content {
  min-width: 0;
}

.help_intro {
  background: var(--accent_soft);
  border: 1px solid #c7d9fb;
  border-radius: 10px;
  padding: 16px 20px;
  margin-bottom: 28px;
}

.help_intro p:last-child {
  margin-bottom: 0;
}

section.help_section {
  margin-bottom: 42px;
  scroll-margin-top: 76px;
}

.help_content h1 {
  font-size: 1.8rem;
  color: var(--logo_blue);
  margin: 0 0 6px;
}

.help_lede {
  color: var(--muted);
  margin: 0 0 26px;
}

.help_content h2 {
  font-size: 1.28rem;
  color: var(--logo_blue);
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
  margin: 0 0 14px;
}

.help_content h3 {
  font-size: 1.02rem;
  color: var(--text);
  margin: 22px 0 8px;
}

.help_content p {
  margin: 0 0 12px;
}

.help_content ul,
.help_content ol {
  margin: 0 0 14px;
  padding-left: 22px;
}

.help_content li {
  margin-bottom: 6px;
}

.help_content li > ul,
.help_content li > ol {
  margin-top: 6px;
}

.ui_label {
  display: inline-block;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1px 8px;
  font-weight: 650;
  font-size: 0.92em;
  white-space: nowrap;
}

.callout {
  border-radius: 8px;
  padding: 12px 16px;
  margin: 14px 0;
  border: 1px solid var(--border);
  background: var(--panel);
}

.callout p:last-child {
  margin-bottom: 0;
}

.callout_title {
  font-weight: 800;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.callout.tip {
  border-color: #b7e4c7;
  background: #f0fbf4;
}

.callout.tip .callout_title {
  color: var(--success);
}

.callout.warn {
  border-color: #f3d38a;
  background: #fff8ec;
}

.callout.warn .callout_title {
  color: #92620a;
}

.callout.limit {
  border-color: #f1b8b3;
  background: #fdf3f2;
}

.callout.limit .callout_title {
  color: var(--restart);
}

table.help_table {
  width: 100%;
  border-collapse: collapse;
  margin: 10px 0 18px;
  font-size: 0.92rem;
}

table.help_table th,
table.help_table td {
  border: 1px solid var(--border);
  padding: 7px 10px;
  text-align: left;
  vertical-align: top;
}

table.help_table th {
  background: var(--code_bg);
}

.help_footer {
  color: var(--muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
  padding-top: 16px;
  margin-top: 40px;
}

@media (max-width: 900px) {
  .help_layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .help_toc {
    position: static;
    margin-bottom: 24px;
  }

  .help_toc nav {
    border-left: none;
    padding-left: 0;
  }

  .help_toc ol ol {
    display: none;
  }
}