/* ============================================================
   TOKENS — dark theme (default)
   ============================================================ */
:root{
  --bg:#070b16;
  --bg-alt:#0b1222;
  --bg-raised:#0f1929;
  --bg-code:#060d18;
  --surface:#111827;
  --text:#e2e8f0;
  --text-hi:#ffffff;
  --text-lo:#94a3b8;
  --text-muted:#64748b;
  --border:rgba(148,163,184,0.08);
  --border-strong:rgba(148,163,184,0.14);
  --cyan:#06b6d4;
  --cyan-bright:#22d3ee;
  --cyan-dim:rgba(6,182,212,0.08);
  --cyan-border:rgba(6,182,212,0.18);
  --indigo:#818cf8;
  --emerald:#10b981;
  --emerald-dim:rgba(16,185,129,0.08);
  --amber:#f59e0b;
  --amber-dim:rgba(245,158,11,0.06);
  --amber-border:rgba(245,158,11,0.14);
  --rose:#f43f5e;
  --rose-dim:rgba(244,63,94,0.06);
  --topbar-bg:rgba(7,11,22,0.82);
  --overlay-bg:rgba(0,0,0,0.55);
  --shadow:0 4px 24px rgba(0,0,0,0.3);
  --radius:10px;
  --radius-sm:6px;
  --sidebar-w:268px;
  /* syntax colors */
  .c-kw{color:#c084fc}.c-fn{color:#22d3ee}.c-str{color:#10b981}.c-cm{color:#64748b}
  .c-var{color:#f59e0b}.c-op{color:#94a3b8}.c-num{color:#fb7185}.c-type{color:#38bdf8}
  .c-builtin{color:#c084fc}.c-punct{color:#94a3b8}.c-prop{color:#38bdf8}.c-regex{color:#fb7185}
}
/* ============================================================
   TOKENS — light theme
   ============================================================ */
[data-theme="light"]{
  --bg:#f8fafc;
  --bg-alt:#f1f5f9;
  --bg-raised:#ffffff;
  --bg-code:#f1f5f9;
  --surface:#ffffff;
  --text:#1e293b;
  --text-hi:#0f172a;
  --text-lo:#475569;
  --text-muted:#94a3b8;
  --border:rgba(15,23,42,0.07);
  --border-strong:rgba(15,23,42,0.12);
  --cyan:#0891b2;
  --cyan-bright:#06b6d4;
  --cyan-dim:rgba(6,182,212,0.07);
  --cyan-border:rgba(6,182,212,0.22);
  --indigo:#4f46e5;
  --emerald:#059669;
  --emerald-dim:rgba(16,185,129,0.07);
  --amber:#d97706;
  --amber-dim:rgba(245,158,11,0.07);
  --amber-border:rgba(245,158,11,0.18);
  --rose:#e11d48;
  --rose-dim:rgba(244,63,94,0.05);
  --topbar-bg:rgba(255,255,255,0.78);
  --overlay-bg:rgba(0,0,0,0.3);
  --shadow:0 4px 24px rgba(0,0,0,0.06);
  .c-kw{color:#7c3aed}.c-fn{color:#0e7490}.c-str{color:#059669}.c-cm{color:#94a3b8}
  .c-var{color:#d97706}.c-op{color:#64748b}.c-num{color:#e11d48}.c-type{color:#0284c7}
  .c-builtin{color:#7c3aed}.c-punct{color:#64748b}.c-prop{color:#0284c7}.c-regex{color:#e11d48}
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  font-size:15px;color:var(--text);background:var(--bg);
  line-height:1.7;overflow-x:hidden;
  transition:background 0.3s,color 0.3s;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
i.lucide{display:inline-block;vertical-align:middle;flex-shrink:0}

::-webkit-scrollbar{width:5px;height:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:10px}
::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}

/* ============================================================
   TOPBAR
   ============================================================ */
.topbar{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:52px;background:var(--topbar-bg);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
  display:flex;align-items:center;padding:0 16px;gap:8px;
  transition:background 0.3s,border-color 0.3s;
}
.topbar-logo{
  display:flex;align-items:center;gap:8px;
  font-family:'Space Grotesk',sans-serif;font-size:16px;font-weight:700;
  color:var(--text-hi);letter-spacing:-0.02em;margin-right:auto;
}
.topbar-logo svg{width:24px;height:24px}
.topbar-badge{
  font-family:'Space Grotesk',sans-serif;font-size:10px;font-weight:600;
  color:var(--cyan);background:var(--cyan-dim);
  border:1px solid var(--cyan-border);border-radius:100px;
  padding:3px 10px;letter-spacing:0.04em;
}
.topbar-back{
  display:flex;align-items:center;gap:5px;
  font-size:13px;font-weight:500;color:var(--text-lo);
  transition:color 0.2s;padding:4px 8px;border-radius:6px;
}
.topbar-back:hover{color:var(--text-hi);background:var(--border)}
.topbar-gh{
  display:flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-sm);
  font-size:12px;font-weight:500;color:var(--text-lo);
  border:1px solid var(--border);transition:all 0.2s;
}
.topbar-gh:hover{color:var(--text-hi);border-color:var(--border-strong);background:var(--bg-alt)}
.theme-btn{
  display:flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:var(--radius-sm);
  border:1px solid var(--border);background:transparent;
  color:var(--text-lo);cursor:pointer;transition:all 0.2s;
}
.theme-btn:hover{color:var(--text-hi);border-color:var(--border-strong);background:var(--bg-alt)}
.theme-btn i.lucide{width:15px;height:15px}
.menu-btn{
  display:none;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:var(--radius-sm);
  border:1px solid var(--border);background:transparent;
  color:var(--text-lo);cursor:pointer;transition:all 0.2s;
}
.menu-btn:hover{color:var(--text-hi);border-color:var(--border-strong)}

/* ============================================================
   LAYOUT
   ============================================================ */
.docs-layout{display:flex;padding-top:52px;min-height:100vh}

/* ============================================================
   SIDEBAR
   ============================================================ */
.sidebar{
  position:fixed;top:52px;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--bg-alt);border-right:1px solid var(--border);
  overflow-y:auto;z-index:50;padding:24px 0 28px;
  display:flex;flex-direction:column;
  transition:background 0.3s,border-color 0.3s;
}
.sidebar-section{padding:0 18px;margin-bottom:2px}
.sidebar-section-title{
  font-family:'Space Grotesk',sans-serif;
  font-size:10px;font-weight:600;letter-spacing:0.09em;
  text-transform:uppercase;color:var(--text-muted);
  padding:14px 0 6px;
}
.sidebar-nav{display:flex;flex-direction:column;gap:1px;padding:0 10px}
.sidebar-link{
  display:flex;align-items:center;gap:10px;
  padding:7px 12px;border-radius:6px;
  font-size:13px;font-weight:450;color:var(--text-lo);
  transition:all 0.15s;cursor:pointer;position:relative;
  line-height:1.4;margin:0 2px;
}
.sidebar-link:hover{color:var(--text-hi);background:var(--border)}
.sidebar-link.active{
  color:var(--text-hi);background:var(--cyan-dim);font-weight:500;
}
.sidebar-link.active::before{
  content:'';position:absolute;left:-11px;top:50%;transform:translateY(-50%);
  width:3px;height:18px;background:var(--cyan);border-radius:0 2px 2px 0;
}
.sidebar-link .icon{width:15px;height:15px;opacity:0.45;flex-shrink:0;stroke-width:1.8}
.sidebar-link.active .icon{opacity:1;color:var(--cyan)}
.sidebar-footer{
  margin-top:auto;padding:16px 16px 0;border-top:1px solid var(--border);
}
.sidebar-footer a{
  display:flex;align-items:center;gap:7px;
  font-size:12px;color:var(--text-muted);transition:color 0.2s;
}
.sidebar-footer a:hover{color:var(--text-lo)}

/* ============================================================
   MAIN CONTENT
   ============================================================ */
.main{
  margin-left:var(--sidebar-w);flex:1;min-width:0;
  padding:44px 56px 96px;max-width:860px;
}
.doc-section{display:none}
.doc-section.active{display:block;animation:fadeIn 0.22s ease-out}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}

/* Typography */
.doc-section h1{
  font-family:'Space Grotesk',sans-serif;font-size:30px;font-weight:700;
  letter-spacing:-0.025em;color:var(--text-hi);margin-bottom:6px;line-height:1.2;
}
.doc-section h1:first-child{margin-top:0}
.doc-section h2{
  font-family:'Space Grotesk',sans-serif;font-size:21px;font-weight:600;
  letter-spacing:-0.015em;color:var(--text-hi);margin:40px 0 14px;padding-top:8px;
  border-top:1px solid var(--border);
}
.doc-section h2:first-of-type{border-top:none;margin-top:22px}
.doc-section h3{
  font-family:'Space Grotesk',sans-serif;font-size:16px;font-weight:600;
  letter-spacing:-0.01em;color:var(--text-hi);margin:28px 0 10px;
}
.doc-section h4{
  font-family:'Space Grotesk',sans-serif;font-size:14px;font-weight:600;
  color:var(--text-lo);margin:22px 0 8px;
}
.doc-section p{margin:10px 0;font-size:14.5px;color:var(--text-lo);line-height:1.78}
.doc-section p strong{color:var(--text-hi);font-weight:600}
.doc-section a{
  color:var(--cyan);text-decoration:underline;text-underline-offset:2px;
  text-decoration-color:rgba(6,182,212,0.25);transition:color 0.15s;
}
.doc-section a:hover{color:var(--cyan-bright);text-decoration-color:var(--cyan)}
.doc-section a.doc-link{cursor:pointer}

/* Lists */
.doc-section ul,.doc-section ol{margin:10px 0;padding-left:22px}
.doc-section li{font-size:14.5px;color:var(--text-lo);margin:3px 0;line-height:1.7}
.doc-section li strong{color:var(--text-hi);font-weight:600}

/* Inline code */
.doc-section code:not(pre code){
  font-family:'JetBrains Mono','SF Mono','Fira Code',monospace;
  font-size:0.88em;background:var(--cyan-dim);color:var(--cyan-bright);
  padding:2px 6px;border-radius:4px;border:1px solid var(--cyan-border);
  white-space:nowrap;font-weight:450;
}

/* Code blocks */
.code-block{
  position:relative;margin:18px 0;border-radius:var(--radius);
  background:var(--bg-code);border:1px solid var(--border);overflow:hidden;
}
.code-block .lang-tag{
  position:absolute;top:0;right:0;padding:3px 10px;
  font-family:'Space Grotesk',sans-serif;font-size:10px;font-weight:600;
  letter-spacing:0.04em;text-transform:uppercase;
  color:var(--text-muted);background:var(--bg-alt);
  border-left:1px solid var(--border);border-bottom:1px solid var(--border);
  border-radius:0 0 0 7px;
}
.code-block .copy-btn{
  position:absolute;top:6px;right:6px;z-index:1;
  display:flex;align-items:center;gap:3px;
  padding:4px 9px;border-radius:5px;opacity:0;
  border:1px solid var(--border);background:var(--bg-alt);
  font-size:11px;color:var(--text-muted);cursor:pointer;
  transition:all 0.2s;font-family:'Inter',sans-serif;
}
.code-block:hover .copy-btn{opacity:1}
.code-block .copy-btn:hover{color:var(--text);border-color:var(--border-strong)}
.code-block .copy-btn.copied{color:var(--emerald);border-color:rgba(16,185,129,0.2);background:var(--emerald-dim)}
.code-block .lang-tag ~ .copy-btn{right:56px}
.code-block pre{margin:0;padding:20px 22px;overflow-x:auto}
.code-block pre code{
  font-family:'JetBrains Mono','SF Mono','Fira Code',monospace;
  font-size:13px;line-height:1.7;color:var(--text);
  white-space:pre;display:block;tab-size:2;
}

/* Tables */
.doc-table-wrap{
  overflow-x:auto;margin:16px 0;border-radius:var(--radius);
  border:1px solid var(--border);
}
.doc-section table{width:100%;border-collapse:collapse;font-size:13.5px}
.doc-section thead{background:var(--bg-alt)}
.doc-section th{
  font-family:'Space Grotesk',sans-serif;font-size:11.5px;font-weight:600;
  text-align:left;padding:10px 14px;color:var(--text-hi);
  border-bottom:1px solid var(--border);letter-spacing:0.02em;
}
.doc-section td{
  padding:9px 14px;color:var(--text-lo);border-bottom:1px solid var(--border);line-height:1.6;
}
.doc-section tbody tr:hover td{background:var(--bg-alt)}
.doc-section tbody tr:last-child td{border-bottom:none}

/* Blockquotes */
.doc-section blockquote{
  margin:16px 0;padding:14px 18px;
  background:var(--amber-dim);border:1px solid var(--amber-border);
  border-left:3px solid var(--amber);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  font-size:14px;color:var(--text-lo);
}

/* HR */
.doc-section hr{margin:32px 0;border:none;border-top:1px solid var(--border)}

/* Loading & Error */
.loading{display:flex;align-items:center;gap:10px;padding:40px 0;color:var(--text-muted);font-size:14px}
.loading .spinner{width:18px;height:18px;border:2px solid var(--border);border-top-color:var(--cyan);border-radius:50%;animation:spin 0.6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.doc-error{padding:16px 20px;background:var(--rose-dim);border:1px solid rgba(244,63,94,0.15);border-radius:var(--radius-sm);color:var(--rose);font-size:14px}

/* Overlay */
.overlay{display:none;position:fixed;inset:0;z-index:40;background:var(--overlay-bg);backdrop-filter:blur(2px)}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media(max-width:860px){
  .menu-btn{display:flex}
  .sidebar{transform:translateX(-100%);transition:transform 0.25s ease;box-shadow:var(--shadow)}
  .sidebar.open{transform:translateX(0)}
  .overlay.open{display:block}
  .main{margin-left:0;padding:32px 22px 64px}
  .doc-section h1{font-size:25px}
  .doc-section h2{font-size:18px}
}
@media(max-width:480px){
  .main{padding:24px 14px 48px}
  .topbar-back span{display:none}
  .topbar-badge{display:none}
  .code-block pre{padding:16px 14px}
  .code-block pre code{font-size:11.5px}
}
@media(prefers-reduced-motion:reduce){
  .doc-section.active{animation:none}
  .sidebar{transition:none}
  *{transition-duration:0s!important}
}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:2px}