/* ===== HERON DOCS — LIGHT THEME ===== */
/* Same type system as the main site (Alte Haas Grotesk / Manrope),
   inverted to a light palette. Self-contained — does not depend on
   styles.css. */

@font-face {
  font-family: 'Alte Haas Grotesk';
  src: url('../fonts/AlteHaasGroteskRegular.ttf') format('truetype');
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Alte Haas Grotesk';
  src: url('../fonts/AlteHaasGroteskBold.ttf') format('truetype');
  font-weight: 700; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Manrope';
  src: url('../fonts/Manrope-Regular.ttf') format('truetype');
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Manrope';
  src: url('../fonts/Manrope-Medium.ttf') format('truetype');
  font-weight: 500; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Manrope';
  src: url('../fonts/Manrope-SemiBold.ttf') format('truetype');
  font-weight: 600; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Manrope';
  src: url('../fonts/Manrope-Bold.ttf') format('truetype');
  font-weight: 700; font-style: normal; font-display: swap;
}

:root {
  --bg: #F6F6F4;
  --bg-elev: #FFFFFF;
  --text: #0A0A0A;
  --text-dim: rgba(10, 10, 10, 0.55);
  --text-faint: rgba(10, 10, 10, 0.35);
  --primary: #1A2FE6;
  --accent: #35A7FF;
  --border: rgba(10, 10, 10, 0.10);
  --border-strong: rgba(10, 10, 10, 0.18);
  --code-bg: #ECECEA;
  --code-text: #1A1A1A;
  --glass-bg: rgba(246, 246, 244, 0.72);
  --font-title: 'Alte Haas Grotesk', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Manrope', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'JetBrains Mono', 'Fira Code', ui-monospace, Menlo, monospace;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: 88px; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  line-height: 1.55;
  font-weight: 400;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
table { border-collapse: collapse; width: 100%; }

.skip-link {
  position: absolute; top: -40px; left: 0;
  background: var(--text); color: var(--bg);
  padding: 8px 16px; z-index: 10000; transition: top 0.3s ease;
  font-size: 14px;
}
.skip-link:focus { top: 0; }

/* ===== NAVBAR ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 999;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 32px;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.5s var(--ease-out), backdrop-filter 0.5s var(--ease-out), border-color 0.5s var(--ease-out);
}
.navbar--scrolled {
  background: var(--glass-bg);
  backdrop-filter: blur(40px) saturate(160%);
  -webkit-backdrop-filter: blur(40px) saturate(160%);
  border-bottom-color: var(--border);
}
.navbar-left { display: flex; align-items: center; gap: 12px; }
.navbar-logo { width: 24px; height: 24px; flex-shrink: 0; }
.navbar-logo img { width: 100%; height: 100%; object-fit: contain; }
.navbar-right { display: flex; align-items: center; gap: 6px; }
.navbar-link {
  font-size: 16px; padding: 6px 12px; color: var(--text);
  transition: color 0.3s ease; white-space: nowrap;
}
.navbar-link:hover { color: var(--primary); text-decoration: none; }
.navbar-link--accent {
  padding: 8px 16px; font-size: 14px; color: var(--text-dim);
  background: transparent; border: 1px solid var(--border-strong);
  transition: color 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}
.navbar-link--accent:hover {
  background: var(--primary); color: #fff; border-color: var(--primary);
}
.navbar-link--active { color: var(--primary); }

/* ===== PAGE HEAD ===== */
.page-section { padding: 120px 64px 96px; max-width: 1920px; margin: 0 auto; }
.page-section--narrow { max-width: 860px; }
.page-tag {
  display: block; font-size: 11px; font-weight: 500;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--text-faint); margin-bottom: 16px;
}
.page-title {
  font-family: var(--font-title);
  font-size: clamp(32px, 3.2vw, 48px);
  font-weight: 700; line-height: 1.1; letter-spacing: -0.02em;
  color: var(--text); margin-bottom: 16px;
}
.page-intro {
  font-size: clamp(15px, 1.1vw, 18px); line-height: 1.6;
  color: var(--text-dim); margin-bottom: 48px; max-width: 640px;
}
.page-meta {
  font-size: 13px; color: var(--text-faint); margin-bottom: 48px;
  font-family: var(--font-mono); letter-spacing: 0.02em;
}
.page-meta span + span { margin-left: 16px; }

/* ===== PROSE ===== */
.docs-prose h2 {
  font-family: var(--font-title);
  font-size: clamp(20px, 2vw, 28px); font-weight: 700;
  line-height: 1.2; letter-spacing: -0.01em;
  color: var(--text); margin: 56px 0 16px;
  scroll-margin-top: 96px;
}
.docs-prose h2:first-child { margin-top: 0; }
.docs-prose h3 {
  font-family: var(--font-title);
  font-size: clamp(17px, 1.4vw, 21px); font-weight: 700;
  color: var(--text); margin: 36px 0 12px;
  scroll-margin-top: 96px;
}
.docs-prose h4 {
  font-size: 15px; font-weight: 700; color: var(--text);
  margin: 24px 0 8px;
}
.docs-prose p {
  font-size: 15.5px; line-height: 1.75; color: var(--text-dim);
  margin-bottom: 16px;
}
.docs-prose p strong { color: var(--text); font-weight: 600; }
.docs-prose ul, .docs-prose ol {
  margin: 0 0 20px; padding-left: 22px;
  font-size: 15.5px; line-height: 1.75; color: var(--text-dim);
}
.docs-prose li { margin-bottom: 6px; }
.docs-prose li::marker { color: var(--text-faint); }
.docs-prose a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }
.docs-prose hr {
  border: none; border-top: 1px solid var(--border);
  margin: 48px 0;
}
.docs-prose blockquote {
  border-left: 3px solid var(--accent);
  padding: 4px 0 4px 18px; margin: 24px 0;
  color: var(--text-dim); font-size: 15px; font-style: normal;
}
.docs-prose blockquote p { margin-bottom: 0; }

/* ===== CODE ===== */
.docs-prose code {
  font-family: var(--font-mono);
  font-size: 13px; font-weight: 400;
  background: var(--code-bg); color: var(--code-text);
  padding: 2px 6px; border-radius: 4px;
}
.docs-prose pre {
  background: var(--code-bg); border: 1px solid var(--border);
  border-radius: 10px; padding: 20px 22px; margin: 0 0 24px;
  overflow-x: auto; line-height: 1.6;
}
.docs-prose pre code {
  background: none; padding: 0; border-radius: 0;
  font-size: 13px; color: var(--code-text);
}

/* ===== TABLES ===== */
.docs-prose table {
  margin: 0 0 28px; font-size: 14px; line-height: 1.6;
  border: 1px solid var(--border); border-radius: 10px;
  overflow: hidden;
}
.docs-prose thead { background: rgba(10,10,10,0.03); }
.docs-prose th {
  text-align: left; font-weight: 600; color: var(--text);
  padding: 12px 16px; font-size: 13px;
  border-bottom: 1px solid var(--border);
}
.docs-prose td {
  padding: 11px 16px; color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono); font-size: 13px;
}
.docs-prose td:not(:last-child) { border-right: 1px solid var(--border); }
.docs-prose tr:last-child td { border-bottom: none; }
.docs-prose td code, .docs-prose th code {
  background: var(--code-bg); font-size: 12.5px;
}

/* ===== CALLOUT ===== */
.callout {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 10px; padding: 16px 20px; margin: 0 0 24px;
}
.callout p { margin-bottom: 0; color: var(--text-dim); font-size: 15px; }
.callout strong { color: var(--text); }

/* ===== DOCS LAYOUT (sidebar + content) ===== */
.docs-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 64px;
  max-width: 1320px; margin: 0 auto;
  padding: 120px 64px 96px;
}
.docs-sidebar {
  position: sticky; top: 96px; align-self: start;
  max-height: calc(100vh - 120px); overflow-y: auto;
  font-size: 13.5px; line-height: 1.7;
}
.docs-sidebar h4 {
  font-size: 11px; font-weight: 600; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--text-faint);
  margin: 0 0 12px;
}
.docs-sidebar ul { list-style: none; padding: 0; margin: 0 0 28px; }
.docs-sidebar li { margin: 0; }
.docs-sidebar a {
  display: block; padding: 4px 0; color: var(--text-dim);
  text-decoration: none; transition: color 0.2s ease;
}
.docs-sidebar a:hover { color: var(--text); text-decoration: none; }
.docs-sidebar a.active { color: var(--primary); font-weight: 500; }

.docs-content { min-width: 0; }
.docs-content .page-tag { margin-bottom: 12px; }
.docs-content .page-title { margin-bottom: 12px; }
.docs-content .page-intro { margin-bottom: 40px; }

/* ===== DOC INDEX GRID ===== */
.doc-index-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 20px; margin-top: 8px;
}
.doc-card {
  display: block; padding: 18px 24px 24px;
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: 12px;
  transition: border-color 0.25s ease, transform 0.25s var(--ease-out);
  text-decoration: none;
}
.doc-card:hover {
  border-color: var(--border-strong);
  text-decoration: none;
}
.doc-card-tag {
  font-size: 11px; font-weight: 600; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--text-faint);
  margin-bottom: 10px;
}
.doc-card-title {
  font-family: var(--font-title); font-size: 19px; font-weight: 700;
  color: var(--text); margin-bottom: 6px;
}
.doc-card-desc {
  font-size: 14px; line-height: 1.55; color: var(--text-dim);
}
.doc-index-section { margin-bottom: 56px; }
.doc-index-section h2 {
  font-family: var(--font-title); font-size: 22px; font-weight: 700;
  color: var(--text); margin: 0 0 20px;
}

/* ===== FOOTER (mirrors site footer, light) ===== */
.footer { padding: 64px 32px 40px; border-top: 1px solid var(--border); margin-top: 80px; }
.footer-card { max-width: 1320px; margin: 0 auto; }
.footer-main {
  display: grid; grid-template-columns: 1.4fr 2fr; gap: 48px;
  padding-bottom: 32px;
}
.footer-logo img { height: 24px; width: auto; }
.footer-description {
  font-size: 14px; line-height: 1.6; color: var(--text-dim);
  margin: 16px 0; max-width: 360px;
}
.footer-socials { display: flex; gap: 14px; }
.footer-socials a {
  color: var(--text-dim); transition: color 0.25s ease;
}
.footer-socials a:hover { color: var(--text); text-decoration: none; }
.footer-socials svg { width: 20px; height: 20px; }
.footer-right {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
}
.footer-column h4 {
  font-size: 12px; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--text-faint);
  margin-bottom: 14px;
}
.footer-column a {
  display: block; font-size: 14px; color: var(--text-dim);
  padding: 4px 0; text-decoration: none; transition: color 0.2s ease;
}
.footer-column a:hover { color: var(--text); text-decoration: none; }
.footer-divider { border-top: 1px solid var(--border); }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 24px; flex-wrap: wrap; gap: 12px;
}
.footer-copyright { font-size: 13px; color: var(--text-faint); }
.footer-legal { display: flex; gap: 18px; flex-wrap: wrap; }
.footer-legal a {
  font-size: 13px; color: var(--text-dim); text-decoration: none;
  transition: color 0.2s ease;
}
.footer-legal a:hover { color: var(--text); }

/* ===== RESPONSIVE ===== */
@media (max-width: 960px) {
  .docs-layout { grid-template-columns: 1fr; gap: 0; padding: 96px 24px 64px; }
  .docs-sidebar { position: static; max-height: none; margin-bottom: 40px; }
  .page-section { padding: 96px 24px 64px; }
  .doc-index-grid { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; gap: 32px; }
  .footer-right { grid-template-columns: 1fr 1fr; }
  .navbar { padding: 12px 18px; }
  .navbar-link { font-size: 14px; padding: 4px 8px; }
}
@media (max-width: 560px) {
  .footer-right { grid-template-columns: 1fr; }
  .docs-prose pre { padding: 16px; font-size: 12px; }
  .docs-prose table { font-size: 12.5px; }
  .docs-prose td, .docs-prose th { padding: 9px 10px; }
}