/* RunOctopus Help Center — Blue Chips aesthetic. Cyan #00FFFF is the only accent. */
:root {
  --cyan: #00FFFF;
  --cyan-soft: rgba(0, 255, 255, 0.14);
  --radius: 24px;
  --radius-sm: 14px;
  --maxw: 1080px;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
}

/* Dark theme (default posture) */
:root[data-theme="dark"] {
  --bg: #080B1A;
  --bg-grad: radial-gradient(1200px 600px at 50% -10%, rgba(0,255,255,0.08), transparent 60%), #080B1A;
  --card-bg: rgba(255, 255, 255, 0.03);
  --card-bg-hover: rgba(0, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.10);
  --border-strong: rgba(0, 255, 255, 0.40);
  --text: #EAF0F7;
  --text-dim: #A9B4C6;
  --link: #6FF6FF;
  --link-hover: #B8FBFF;
  --code-bg: rgba(0, 255, 255, 0.10);
  --code-text: #B8FBFF;
  --input-bg: rgba(255, 255, 255, 0.04);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}

/* Light theme (full parity) */
:root[data-theme="light"] {
  --bg: #EBF3F0;
  --bg-grad: radial-gradient(1200px 600px at 50% -10%, rgba(0,180,200,0.14), transparent 60%), #EBF3F0;
  --card-bg: rgba(255, 255, 255, 0.90);
  --card-bg-hover: #ffffff;
  --border: rgba(6, 42, 54, 0.14);
  --border-strong: rgba(4, 120, 140, 0.55);
  --text: #0B1220;
  --text-dim: #43505F;
  --link: #036374;
  --link-hover: #01444F;
  --code-bg: rgba(3, 99, 116, 0.10);
  --code-text: #024E5A;
  --input-bg: #ffffff;
  --shadow: 0 16px 40px rgba(10, 40, 60, 0.12);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg-grad);
  background-attachment: fixed;
  color: var(--text);
  font-size: 16px;
  line-height: 1.6;
  font-weight: 400;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--link); text-decoration: none; }
a:hover { color: var(--link-hover); text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.25; letter-spacing: -0.01em; }
h1 { font-weight: 600; }
h2 { font-weight: 600; }
h3 { font-weight: 500; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; border-radius: 4px; }

.ro-skip {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--cyan); color: #003038; padding: 10px 16px; border-radius: 0 0 10px 0; font-weight: 600;
}
.ro-skip:focus { left: 0; }

/* Top bar */
.ro-topbar {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 14px clamp(16px, 4vw, 40px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(20px) saturate(140%);
  border-bottom: 1px solid var(--border);
}
.ro-brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 600; }
.ro-brand:hover { text-decoration: none; }
.ro-brand__mark { color: var(--cyan); font-size: 18px; }
.ro-brand__sub { color: var(--text-dim); font-weight: 500; }
.ro-topbar__actions { display: flex; align-items: center; gap: 14px; }
.ro-topbar__link { color: var(--text-dim); font-weight: 500; font-size: 14px; }
.ro-topbar__link:hover { color: var(--text); }
.ro-topbar__cta {
  background: var(--cyan); color: #003038; font-weight: 600; font-size: 14px;
  padding: 8px 16px; border-radius: 8px;
}
.ro-topbar__cta:hover { background: var(--cyan-hover, #7CFFFF); text-decoration: none; }

.ro-theme-toggle {
  display: inline-flex; align-items: center; cursor: pointer;
  font: inherit; font-size: 13px; font-weight: 600; color: var(--text-dim);
  background: var(--card-bg); border: 1px solid var(--border); border-radius: 999px;
  padding: 5px; gap: 2px;
}
.ro-theme-toggle span { padding: 3px 10px; border-radius: 999px; }
:root[data-theme="dark"] .ro-theme-toggle__dark,
:root[data-theme="light"] .ro-theme-toggle__light { background: var(--cyan); color: #002a30; }

/* Main + footer */
.ro-main { max-width: var(--maxw); margin: 0 auto; padding: clamp(24px, 5vw, 56px) clamp(16px, 4vw, 40px); }
.ro-footer {
  max-width: var(--maxw); margin: 0 auto; padding: 32px clamp(16px, 4vw, 40px) 56px;
  border-top: 1px solid var(--border); color: var(--text-dim); font-size: 14px;
}
.ro-footer a { font-weight: 600; }
.ro-footer__note { margin-top: 8px; font-size: 13px; opacity: 0.85; }

/* Hero + search */
.ro-hero { text-align: center; padding: clamp(20px, 6vw, 64px) 0 clamp(28px, 5vw, 48px); }
.ro-hero__eyebrow { text-transform: uppercase; letter-spacing: 0.14em; font-size: 12px; font-weight: 600; color: var(--cyan); margin: 0 0 12px; }
.ro-hero__title { font-size: clamp(30px, 6vw, 48px); margin: 0 0 12px; }
.ro-hero__tagline { color: var(--text-dim); font-size: clamp(15px, 2.4vw, 18px); max-width: 620px; margin: 0 auto 28px; }

.ro-search {
  position: relative; display: flex; align-items: center; gap: 12px;
  max-width: 620px; margin: 0 auto;
  background: var(--input-bg); border: 1px solid var(--border); border-radius: 999px;
  padding: 4px 4px 4px 20px; box-shadow: var(--shadow);
}
.ro-search:focus-within { border-color: var(--border-strong); box-shadow: 0 0 0 3px var(--cyan-soft); }
.ro-search__icon { width: 20px; height: 20px; color: var(--text-dim); flex: none; }
.ro-search__input {
  flex: 1; border: none; background: transparent; color: var(--text);
  font: inherit; font-size: 17px; padding: 14px 10px 14px 0; outline: none;
}
.ro-search__input::placeholder { color: var(--text-dim); }

.ro-results {
  max-width: 620px; margin: 12px auto 0; text-align: left;
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-sm);
  box-shadow: var(--shadow); overflow: hidden;
}
.ro-result { display: block; padding: 14px 18px; border-bottom: 1px solid var(--border); color: var(--text); }
.ro-result:last-child { border-bottom: none; }
.ro-result:hover { background: var(--card-bg-hover); text-decoration: none; }
.ro-result__title { display: block; font-weight: 600; }
.ro-result__cat { display: inline-block; font-size: 11px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; color: var(--cyan); margin: 2px 0; }
.ro-result__summary { display: block; font-size: 14px; color: var(--text-dim); }
.ro-results__empty { padding: 18px; margin: 0; color: var(--text-dim); font-size: 14px; }

/* Category grid */
.ro-cat-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px;
}
.ro-cat-card {
  display: flex; gap: 16px; align-items: flex-start;
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; color: var(--text); transition: border-color .15s, background .15s, transform .15s;
}
.ro-cat-card:hover { border-color: var(--border-strong); background: var(--card-bg-hover); transform: translateY(-2px); text-decoration: none; }
.ro-cat-card__icon {
  flex: none; width: 46px; height: 46px; display: grid; place-items: center;
  border-radius: 12px; background: var(--cyan-soft); border: 1px solid var(--border);
}
.ro-cat-icon { width: 24px; height: 24px; color: var(--cyan); }
.ro-cat-card__body { display: flex; flex-direction: column; gap: 6px; }
.ro-cat-card__title { font-size: 18px; font-weight: 600; }
.ro-cat-card__blurb { font-size: 14px; color: var(--text-dim); line-height: 1.5; }
.ro-cat-card__count { font-size: 12px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; color: var(--cyan); margin-top: 2px; }

/* Breadcrumbs */
.ro-crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 13px; color: var(--text-dim); margin-bottom: 22px; }
.ro-crumbs a { color: var(--text-dim); font-weight: 500; }
.ro-crumbs a:hover { color: var(--cyan); }
.ro-crumbs__sep { opacity: 0.6; }
.ro-crumbs [aria-current="page"] { color: var(--text); font-weight: 500; }

/* Category page */
.ro-cat-head { display: flex; gap: 18px; align-items: center; margin-bottom: 28px; }
.ro-cat-head__icon { flex: none; width: 56px; height: 56px; display: grid; place-items: center; border-radius: 14px; background: var(--cyan-soft); border: 1px solid var(--border); }
.ro-cat-head__icon .ro-cat-icon { width: 28px; height: 28px; }
.ro-cat-head h1 { font-size: clamp(26px, 4vw, 34px); margin: 0 0 6px; }
.ro-cat-head__blurb { color: var(--text-dim); margin: 0; max-width: 640px; }
.ro-article-list { display: flex; flex-direction: column; gap: 12px; }
.ro-article-row {
  display: block; background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 18px 22px; color: var(--text); transition: border-color .15s, background .15s;
}
.ro-article-row:hover { border-color: var(--border-strong); background: var(--card-bg-hover); text-decoration: none; }
.ro-article-row__title { display: block; font-size: 17px; font-weight: 600; margin-bottom: 4px; }
.ro-article-row__summary { display: block; font-size: 14px; color: var(--text-dim); }
.ro-empty { color: var(--text-dim); }

/* Article layout */
.ro-article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 240px; gap: 40px; align-items: start; }
.ro-article { min-width: 0; }
.ro-article__head { margin-bottom: 28px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.ro-article__kind { font-size: 12px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--cyan); margin: 0 0 10px; }
.ro-article__head h1 { font-size: clamp(28px, 4.5vw, 38px); margin: 0 0 12px; }
.ro-article__summary { font-size: 18px; color: var(--text-dim); margin: 0; line-height: 1.5; }

.ro-side { position: sticky; top: 84px; }
.ro-toc {
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 18px 20px;
}
.ro-toc__label { font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-dim); margin: 0 0 10px; }
.ro-toc ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.ro-toc a { color: var(--text-dim); font-size: 14px; font-weight: 500; }
.ro-toc a:hover { color: var(--cyan); }

/* Prose */
.ro-prose { font-size: 16px; }
.ro-prose > *:first-child { margin-top: 0; }
.ro-prose p { margin: 0 0 18px; }
.ro-prose h2 { font-size: 24px; margin: 40px 0 14px; scroll-margin-top: 84px; }
.ro-prose h3 { font-size: 19px; margin: 28px 0 10px; scroll-margin-top: 84px; }
.ro-prose ul, .ro-prose ol { margin: 0 0 18px; padding-left: 24px; }
.ro-prose li { margin: 0 0 8px; }
.ro-prose li > p:last-child { margin-bottom: 0; }
.ro-prose strong { font-weight: 600; color: var(--text); }
.ro-prose a { font-weight: 500; text-decoration: underline; text-underline-offset: 2px; }
.ro-prose code {
  background: var(--code-bg); color: var(--code-text); padding: 2px 6px; border-radius: 6px;
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.88em;
}
.ro-prose pre {
  background: var(--code-bg); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 16px 18px; overflow-x: auto; margin: 0 0 18px;
}
.ro-prose pre code { background: none; padding: 0; color: var(--text); }
.ro-prose blockquote {
  margin: 0 0 18px; padding: 4px 18px; border-left: 3px solid var(--cyan);
  background: var(--cyan-soft); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--text);
}
.ro-figure { margin: 0 0 20px; }
.ro-figure img { max-width: 100%; height: auto; border-radius: var(--radius-sm); border: 1px solid var(--border); display: block; }
.ro-figure figcaption { font-size: 13px; color: var(--text-dim); margin-top: 8px; }
.ro-prose img { max-width: 100%; height: auto; }

/* Related */
.ro-related { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border); }
.ro-related h2 { font-size: 15px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-dim); margin: 0 0 12px; }
.ro-related ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.ro-related a { font-weight: 500; }

@media (max-width: 860px) {
  .ro-article-layout { grid-template-columns: 1fr; gap: 0; }
  .ro-side { position: static; order: -1; margin-bottom: 24px; }
  .ro-toc { padding: 14px 16px; }
}
@media (max-width: 560px) {
  .ro-cat-grid { grid-template-columns: 1fr; }
  .ro-brand__sub { display: none; }
  .ro-topbar__link { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .ro-cat-card, .ro-article-row { transition: none; }
}