/* ============================================================
   Signal Labs — Developer Docs Stylesheet
   ============================================================ */

/* --- Theme Variables ---------------------------------------- */
:root {
  --docs-bg: #ffffff;
  --docs-sidebar-bg: #f9fafb;
  --docs-text: #111827;
  --docs-text-secondary: #6b7280;
  --docs-text-muted: #9ca3af;
  --docs-border: #e5e7eb;
  --docs-border-light: #f3f4f6;
  --docs-hover-bg: #f3f4f6;
  --docs-active-bg: #eff6ff;
  --docs-active-text: #2563eb;
  --docs-active-border: #2563eb;
  --docs-code-bg: #0f172a;
  --docs-code-text: #e2e8f0;
  --docs-code-border: #1e293b;
  --docs-inline-code-bg: #f1f5f9;
  --docs-inline-code-text: #0f172a;
  --docs-inline-code-border: #e2e8f0;
  --docs-table-header-bg: #f9fafb;
  --docs-table-stripe: #f9fafb;
  --docs-callout-bg: #f0f9ff;
  --docs-callout-border: #06b6d4;
  --docs-callout-text: #0c4a6e;
  --docs-navbar-bg: #ffffff;
  --docs-navbar-border: #e5e7eb;
  --docs-link: #2563eb;
  --docs-link-hover: #1d4ed8;
  --docs-card-bg: #ffffff;
  --docs-card-border: #e5e7eb;
  --docs-card-shadow: 0 1px 3px rgba(0,0,0,.06);
  --docs-tab-bg: #1e293b;
  --docs-tab-active-bg: #0f172a;
  --docs-tab-text: #94a3b8;
  --docs-tab-active-text: #e2e8f0;
  --docs-copy-bg: rgba(255,255,255,.08);
  --docs-copy-hover-bg: rgba(255,255,255,.15);
  --docs-sidebar-width: 260px;
  --docs-navbar-height: 56px;
  --docs-content-max: 740px;
}

[data-theme="dark"] {
  --docs-bg: #0d1117;
  --docs-sidebar-bg: #010409;
  --docs-text: #e6edf3;
  --docs-text-secondary: #8b949e;
  --docs-text-muted: #6e7681;
  --docs-border: #21262d;
  --docs-border-light: #161b22;
  --docs-hover-bg: #161b22;
  --docs-active-bg: rgba(56,139,253,.1);
  --docs-active-text: #58a6ff;
  --docs-active-border: #58a6ff;
  --docs-code-bg: #161b22;
  --docs-code-text: #e6edf3;
  --docs-code-border: #21262d;
  --docs-inline-code-bg: #21262d;
  --docs-inline-code-text: #e6edf3;
  --docs-inline-code-border: #30363d;
  --docs-table-header-bg: #161b22;
  --docs-table-stripe: #0d1117;
  --docs-callout-bg: rgba(56,139,253,.08);
  --docs-callout-border: #58a6ff;
  --docs-callout-text: #79c0ff;
  --docs-navbar-bg: #010409;
  --docs-navbar-border: #21262d;
  --docs-link: #58a6ff;
  --docs-link-hover: #79c0ff;
  --docs-card-bg: #161b22;
  --docs-card-border: #21262d;
  --docs-card-shadow: 0 1px 3px rgba(0,0,0,.3);
  --docs-tab-bg: #21262d;
  --docs-tab-active-bg: #161b22;
  --docs-tab-text: #8b949e;
  --docs-tab-active-text: #e6edf3;
  --docs-copy-bg: rgba(255,255,255,.06);
  --docs-copy-hover-bg: rgba(255,255,255,.12);
}

/* --- Base --------------------------------------------------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body.docs-body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--docs-text);
  background: var(--docs-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* --- Docs Navbar -------------------------------------------- */
.docs-navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--docs-navbar-height);
  background: var(--docs-navbar-bg);
  border-bottom: 1px solid var(--docs-navbar-border);
  z-index: 100;
  display: flex;
  align-items: center;
}

.docs-nav-inner {
  width: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.docs-nav-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.docs-nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--docs-text);
  font-weight: 600;
  font-size: 15px;
}

.docs-nav-logo .logo-icon {
  width: 28px; height: 28px;
  background: linear-gradient(135deg, #272d46, #06B6D4);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 500;
  font-size: 17px;
  line-height: 1;
  flex-shrink: 0;
}

.docs-nav-logo .logo-icon span { margin-top: -2px; display: block; }

.docs-nav-sep {
  width: 1px; height: 20px;
  background: var(--docs-border);
  margin: 0 2px;
}

.docs-nav-badge {
  font-size: 14px;
  font-weight: 500;
  color: var(--docs-text-secondary);
  text-decoration: none;
}

.docs-nav-badge:hover { color: var(--docs-text); }

.docs-nav-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.docs-nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--docs-text-secondary);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 6px;
  transition: color .15s, background .15s;
}

.docs-nav-link:hover {
  color: var(--docs-text);
  background: var(--docs-hover-bg);
}

.docs-theme-toggle {
  width: 36px; height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--docs-border);
  border-radius: 8px;
  cursor: pointer;
  color: var(--docs-text-secondary);
  transition: color .15s, background .15s, border-color .15s;
}

.docs-theme-toggle:hover {
  color: var(--docs-text);
  background: var(--docs-hover-bg);
  border-color: var(--docs-text-muted);
}

.docs-theme-toggle svg { width: 18px; height: 18px; }
.docs-theme-toggle .icon-sun { display: none; }
.docs-theme-toggle .icon-moon { display: block; }
[data-theme="dark"] .docs-theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .docs-theme-toggle .icon-moon { display: none; }

.docs-nav-cta {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: #272d46;
  padding: 7px 16px;
  border-radius: 8px;
  text-decoration: none;
  transition: background .15s;
}

.docs-nav-cta:hover { background: #1f2338; }
[data-theme="dark"] .docs-nav-cta { background: #58a6ff; color: #0d1117; }
[data-theme="dark"] .docs-nav-cta:hover { background: #79c0ff; }

.docs-mobile-menu-btn {
  display: none;
  width: 36px; height: 36px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--docs-border);
  border-radius: 8px;
  cursor: pointer;
  color: var(--docs-text-secondary);
}

.docs-mobile-menu-btn svg { width: 20px; height: 20px; }

/* --- Layout ------------------------------------------------- */
.docs-layout {
  display: flex;
  min-height: 100vh;
  padding-top: var(--docs-navbar-height);
}

/* --- Sidebar ------------------------------------------------ */
.docs-sidebar {
  position: fixed;
  top: var(--docs-navbar-height);
  left: 0;
  bottom: 0;
  width: var(--docs-sidebar-width);
  background: var(--docs-sidebar-bg);
  border-right: 1px solid var(--docs-border);
  overflow-y: auto;
  padding: 24px 0;
  z-index: 50;
  scrollbar-width: thin;
  scrollbar-color: var(--docs-border) transparent;
}

.docs-sidebar::-webkit-scrollbar { width: 4px; }
.docs-sidebar::-webkit-scrollbar-track { background: transparent; }
.docs-sidebar::-webkit-scrollbar-thumb { background: var(--docs-border); border-radius: 4px; }

.docs-sidebar-nav { padding: 0 16px; }

.docs-sidebar-section { margin-bottom: 28px; }

.docs-sidebar-section h4 {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--docs-text-muted);
  padding: 0 12px;
  margin-bottom: 6px;
}

.docs-sidebar-link {
  display: block;
  font-size: 14px;
  font-weight: 450;
  color: var(--docs-text-secondary);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 6px;
  transition: color .12s, background .12s;
  margin: 1px 0;
}

.docs-sidebar-link:hover {
  color: var(--docs-text);
  background: var(--docs-hover-bg);
}

.docs-sidebar-link.active {
  color: var(--docs-active-text);
  background: var(--docs-active-bg);
  font-weight: 550;
}

.docs-sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.4);
  z-index: 49;
}

/* --- Main Content ------------------------------------------- */
.docs-main {
  flex: 1;
  margin-left: var(--docs-sidebar-width);
  min-width: 0;
}

.docs-content {
  max-width: var(--docs-content-max);
  margin: 0 auto;
  padding: 48px 32px 96px;
}

/* --- Typography --------------------------------------------- */
.docs-content h1 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.2;
  margin-bottom: 8px;
  color: var(--docs-text);
}

.docs-content h2 {
  font-size: 22px;
  font-weight: 650;
  letter-spacing: -.015em;
  line-height: 1.3;
  margin-top: 48px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--docs-border);
  color: var(--docs-text);
}

.docs-content h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  margin-top: 32px;
  margin-bottom: 12px;
  color: var(--docs-text);
}

.docs-content h4 {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  margin-top: 24px;
  margin-bottom: 8px;
  color: var(--docs-text);
}

.docs-content p {
  margin-bottom: 16px;
  color: var(--docs-text-secondary);
  font-size: 15px;
  line-height: 1.75;
}

.docs-content > .docs-lead {
  font-size: 17px;
  color: var(--docs-text-secondary);
  margin-bottom: 32px;
  line-height: 1.7;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--docs-border);
}

.docs-content a {
  color: var(--docs-link);
  text-decoration: none;
  font-weight: 500;
  transition: color .15s;
}

.docs-content a:hover {
  color: var(--docs-link-hover);
  text-decoration: underline;
}

.docs-content ul, .docs-content ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

.docs-content li {
  margin-bottom: 6px;
  color: var(--docs-text-secondary);
  font-size: 15px;
  line-height: 1.7;
}

.docs-content li code {
  background: var(--docs-inline-code-bg);
  color: var(--docs-inline-code-text);
  border: 1px solid var(--docs-inline-code-border);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
  font-family: 'SF Mono', 'Fira Code', 'Fira Mono', 'Cascadia Code', monospace;
}

.docs-content strong {
  font-weight: 600;
  color: var(--docs-text);
}

.docs-content hr {
  border: none;
  border-top: 1px solid var(--docs-border);
  margin: 32px 0;
}

/* --- Inline Code -------------------------------------------- */
.docs-content code:not([class*="language-"]):not(.code-block code) {
  background: var(--docs-inline-code-bg);
  color: var(--docs-inline-code-text);
  border: 1px solid var(--docs-inline-code-border);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
  font-family: 'SF Mono', 'Fira Code', 'Fira Mono', 'Cascadia Code', monospace;
  word-break: break-word;
}

/* --- Callout / Blockquote ----------------------------------- */
.docs-callout {
  background: var(--docs-callout-bg);
  border-left: 3px solid var(--docs-callout-border);
  border-radius: 0 8px 8px 0;
  padding: 14px 18px;
  margin-bottom: 24px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--docs-callout-text);
}

.docs-callout p { color: inherit; margin-bottom: 0; }

/* --- Code Block (single) ------------------------------------ */
.code-block {
  position: relative;
  margin-bottom: 24px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--docs-code-border);
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  height: 40px;
  background: var(--docs-tab-bg);
  border-bottom: 1px solid var(--docs-code-border);
}

.code-lang {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--docs-tab-text);
  font-family: 'SF Mono', 'Fira Code', monospace;
}

.code-block pre {
  margin: 0;
  padding: 16px 20px;
  background: var(--docs-code-bg);
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: #334155 transparent;
}

.code-block pre::-webkit-scrollbar { height: 6px; }
.code-block pre::-webkit-scrollbar-track { background: transparent; }
.code-block pre::-webkit-scrollbar-thumb { background: #334155; border-radius: 3px; }

.code-block code {
  font-family: 'SF Mono', 'Fira Code', 'Fira Mono', 'Cascadia Code', monospace;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--docs-code-text);
  background: transparent;
  border: none;
  padding: 0;
}

/* --- Code Group (tabbed) ------------------------------------ */
.code-group {
  margin-bottom: 24px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--docs-code-border);
}

.code-tabs {
  display: flex;
  background: var(--docs-tab-bg);
  border-bottom: 1px solid var(--docs-code-border);
  padding: 0 8px;
  gap: 0;
}

.code-tab {
  padding: 0 14px;
  height: 40px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--docs-tab-text);
  font-size: 13px;
  font-weight: 500;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  transition: color .12s, border-color .12s;
  white-space: nowrap;
}

.code-tab:hover { color: var(--docs-tab-active-text); }

.code-tab.active {
  color: var(--docs-tab-active-text);
  border-bottom-color: #06b6d4;
}

.code-panel { display: none; position: relative; }
.code-panel.active { display: block; }

.code-panel pre {
  margin: 0;
  padding: 16px 20px;
  background: var(--docs-code-bg);
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: #334155 transparent;
}

.code-panel pre::-webkit-scrollbar { height: 6px; }
.code-panel pre::-webkit-scrollbar-track { background: transparent; }
.code-panel pre::-webkit-scrollbar-thumb { background: #334155; border-radius: 3px; }

.code-panel code {
  font-family: 'SF Mono', 'Fira Code', 'Fira Mono', 'Cascadia Code', monospace;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--docs-code-text);
  background: transparent;
  border: none;
  padding: 0;
}

/* --- Copy Button -------------------------------------------- */
.copy-btn {
  position: absolute;
  top: 8px; right: 10px;
  width: 32px; height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--docs-copy-bg);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 6px;
  cursor: pointer;
  color: #94a3b8;
  opacity: 0;
  transition: opacity .15s, background .15s, color .15s;
  z-index: 5;
}

.code-block:hover .copy-btn,
.code-panel:hover .copy-btn,
.copy-btn:focus { opacity: 1; }

.copy-btn:hover {
  background: var(--docs-copy-hover-bg);
  color: #e2e8f0;
}

.copy-btn.copied {
  color: #34d399;
  opacity: 1;
}

.copy-btn svg { width: 16px; height: 16px; }

.code-header .copy-btn {
  position: static;
  opacity: 0;
}

.code-block:hover .code-header .copy-btn { opacity: 1; }

/* --- Tables ------------------------------------------------- */
.docs-table-wrapper {
  overflow-x: auto;
  margin-bottom: 24px;
  border-radius: 8px;
  border: 1px solid var(--docs-border);
}

.docs-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.docs-content thead { background: var(--docs-table-header-bg); }

.docs-content th {
  text-align: left;
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--docs-text-muted);
  padding: 10px 16px;
  border-bottom: 1px solid var(--docs-border);
  white-space: nowrap;
}

.docs-content td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--docs-border);
  color: var(--docs-text-secondary);
  vertical-align: top;
}

.docs-content tbody tr:last-child td { border-bottom: none; }

.docs-content tbody tr:nth-child(even) { background: var(--docs-table-stripe); }

.docs-content td code {
  background: var(--docs-inline-code-bg);
  color: var(--docs-inline-code-text);
  border: 1px solid var(--docs-inline-code-border);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 12px;
  font-family: 'SF Mono', 'Fira Code', monospace;
}

/* --- Method badge in tables --------------------------------- */
.method-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  font-family: 'SF Mono', 'Fira Code', monospace;
  padding: 2px 8px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: .03em;
}

.method-get { background: #dbeafe; color: #1d4ed8; }
.method-post { background: #d1fae5; color: #059669; }
.method-put { background: #fef3c7; color: #b45309; }
.method-delete { background: #fee2e2; color: #dc2626; }

[data-theme="dark"] .method-get { background: rgba(59,130,246,.15); color: #60a5fa; }
[data-theme="dark"] .method-post { background: rgba(16,185,129,.15); color: #34d399; }
[data-theme="dark"] .method-put { background: rgba(245,158,11,.15); color: #fbbf24; }
[data-theme="dark"] .method-delete { background: rgba(239,68,68,.15); color: #f87171; }

/* --- What's Next Cards -------------------------------------- */
.docs-next-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-top: 8px;
  margin-bottom: 24px;
}

.docs-next-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  background: var(--docs-card-bg);
  border: 1px solid var(--docs-card-border);
  border-radius: 8px;
  text-decoration: none;
  color: var(--docs-text);
  font-size: 14px;
  font-weight: 500;
  transition: border-color .15s, box-shadow .15s;
}

.docs-next-card:hover {
  border-color: var(--docs-active-border);
  box-shadow: var(--docs-card-shadow);
  text-decoration: none;
  color: var(--docs-active-text);
}

.docs-next-card svg {
  flex-shrink: 0;
  color: var(--docs-text-muted);
}

.docs-next-card:hover svg { color: var(--docs-active-text); }

/* --- Prism.js Token Colors (custom dark theme) -------------- */
.token.comment,
.token.prolog,
.token.doctype,
.token.cdata { color: #6b7280; font-style: italic; }
.token.punctuation { color: #9ca3af; }
.token.property,
.token.tag,
.token.constant,
.token.symbol,
.token.deleted { color: #f87171; }
.token.boolean,
.token.number { color: #fb923c; }
.token.selector,
.token.attr-name,
.token.string,
.token.char,
.token.builtin,
.token.inserted { color: #34d399; }
.token.operator,
.token.entity,
.token.url,
.language-css .token.string,
.style .token.string { color: #67e8f9; }
.token.atrule,
.token.attr-value,
.token.keyword { color: #a78bfa; }
.token.function,
.token.class-name { color: #60a5fa; }
.token.regex,
.token.important,
.token.variable { color: #fbbf24; }

/* --- Step badges -------------------------------------------- */
.docs-step {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-top: 32px;
  margin-bottom: 16px;
}

.docs-step-badge {
  flex-shrink: 0;
  width: 28px; height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #272d46, #06B6D4);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  border-radius: 50%;
}

.docs-step h2 {
  margin-top: 0;
  padding-bottom: 0;
  border-bottom: none;
  font-size: 20px;
}

/* --- Footer ------------------------------------------------- */
.docs-footer {
  border-top: 1px solid var(--docs-border);
  padding: 32px 0;
  margin-left: var(--docs-sidebar-width);
}

.docs-footer-inner {
  max-width: var(--docs-content-max);
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--docs-text-muted);
}

.docs-footer a {
  color: var(--docs-text-secondary);
  text-decoration: none;
  transition: color .15s;
}

.docs-footer a:hover { color: var(--docs-text); }

.docs-footer-links { display: flex; gap: 20px; }

/* --- Mobile Responsive -------------------------------------- */
@media (max-width: 1024px) {
  .docs-content { padding: 40px 24px 80px; }
}

@media (max-width: 768px) {
  .docs-mobile-menu-btn { display: flex; }

  .docs-sidebar {
    transform: translateX(-100%);
    transition: transform .25s cubic-bezier(.4,0,.2,1);
    z-index: 60;
    width: 280px;
    background: var(--docs-bg);
  }

  .docs-sidebar.open {
    transform: translateX(0);
    box-shadow: 4px 0 24px rgba(0,0,0,.15);
  }

  .docs-sidebar-overlay.visible {
    display: block;
    z-index: 55;
  }

  .docs-main { margin-left: 0; }
  .docs-footer { margin-left: 0; }

  .docs-content { padding: 32px 20px 64px; }

  .docs-content h1 { font-size: 26px; }
  .docs-content h2 { font-size: 20px; margin-top: 36px; }
  .docs-content h3 { font-size: 16px; }
  .docs-content > .docs-lead { font-size: 15px; }

  .docs-next-grid { grid-template-columns: 1fr; }

  .copy-btn { opacity: 1; }

  .docs-footer-inner { flex-direction: column; gap: 12px; text-align: center; }

  .docs-nav-link.hide-mobile { display: none; }
}

@media (max-width: 480px) {
  .docs-content { padding: 24px 16px 48px; }
  .code-block pre,
  .code-panel pre { padding: 12px 14px; }
  .code-block code,
  .code-panel code { font-size: 12.5px; }
  .docs-content table { font-size: 13px; }
  .docs-content th,
  .docs-content td { padding: 8px 12px; }
}