:root {
  --bg: #0a0a0f;
  --bg-secondary: rgba(26, 28, 36, 0.6);
  --text: #f8fafc;
  --text-muted: #94a3b8;
  --accent: #3b82f6;
  --accent-hover: #60a5fa;
  --accent-cyan: #06b6d4;
  --gradient: linear-gradient(135deg, rgba(56, 189, 248, 1) 0%, rgba(14, 165, 233, 1) 50%, rgba(3, 105, 161, 1) 100%);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.1);
  --success: #10b981;
  --warning: #f59e0b;
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-bg: rgba(15, 23, 42, 0.4);
}

html {
  scroll-behavior: smooth;
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  letter-spacing: 0.045em;
  cursor: url("Cursor/Pointer.cur") 1 1, auto;
}

body {
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Background Mesh / Glow */
.bg-mesh {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
  background: radial-gradient(circle at 50% 50%, #11111a 0%, #0a0a0f 100%);
}
.bg-mesh::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("https://grainy-gradients.vercel.app/noise.svg");
  opacity: 0.15;
  filter: contrast(150%) brightness(100%);
  pointer-events: none;
}
.blob-blue {
  position: absolute;
  top: -10%;
  left: -20%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, rgba(59,130,246,0.15) 0%, rgba(10,10,15,0) 70%);
  border-radius: 50%;
  animation: float 20s infinite alternate ease-in-out;
  filter: blur(80px);
}
.blob-cyan {
  position: absolute;
  bottom: -10%;
  right: -20%;
  width: 70vw;
  height: 70vw;
  background: radial-gradient(circle, rgba(6,182,212,0.12) 0%, rgba(10,10,15,0) 70%);
  border-radius: 50%;
  animation: float 25s infinite alternate-reverse ease-in-out;
  filter: blur(80px);
}
@keyframes float {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(5%, 10%) scale(1.1); }
}

.top-nav {
  position: fixed;
  top: 1rem;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  max-width: 1200px;
  background: rgba(15, 23, 42, 0.3);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  z-index: 1000;
  padding: 0.75rem 1.5rem;
  transition: all 0.3s ease;
}

.top-nav.shrink {
  width: 75%;
  padding: 0.45rem 1.25rem;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(20px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-weight: 700;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text);
  letter-spacing: 0.025em;
}

.logo i { color: var(--accent); font-size: 1.5rem; }

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s;
}
.nav-links a:hover { color: #3895f8; }

.nav-links .nav-btn {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 0.5rem 1.25rem;
  border-radius: 20px;
  color: var(--text);
}
.nav-links .nav-btn:hover { 
    background: rgba(255, 255, 255, 0.1); 
    border-color: #3895f8;
    color: var(--text); 
    animation: pulseGlow 1.5s infinite ease-in-out;
}

@keyframes pulseGlow {
    0% {
        box-shadow: 0 0 0 0 rgba(0, 255, 255, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(0, 255, 255, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(0, 255, 255, 0);
    }
}

/* ─── LAYOUT ─── */
.layout-wrapper {
  display: flex;
  margin-top: 4.5rem;
  min-height: calc(100vh - 4.5rem);
  position: relative;
}

/* ─── SIDEBAR ─── */
.sidebar {
  position: fixed;
  top: 4.5rem;
  left: 0;
  width: 280px;
  height: calc(100vh - 4.5rem);
  overflow-y: auto;
  background: rgba(15, 23, 42, 0.35);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-right: 1px solid var(--glass-border);
  padding: 1.25rem 0;
  z-index: 100;
  scrollbar-width: thin;
  scrollbar-color: var(--accent) transparent;
}

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

.sidebar-section { margin-bottom: 0.25rem; }

.sidebar-section-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
  transition: color 0.2s;
}
.sidebar-section-title:hover { color: var(--text); }
.sidebar-section-title .arrow {
  margin-left: auto;
  font-size: 0.65rem;
  transition: transform 0.25s ease;
}
.sidebar-section-title .arrow.open { transform: rotate(90deg); }

.sidebar-items {
  overflow: hidden;
  max-height: 2000px;
  opacity: 1;
  transition: max-height 0.35s ease, opacity 0.25s ease;
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.25rem 0.55rem 2rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
  border-left: 2px solid transparent;
  text-decoration: none;
}
.sidebar-item:hover { color: var(--text); background: rgba(255,255,255,0.03); }
.sidebar-item.active {
  color: var(--accent-cyan);
  border-left-color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.06);
}

.sidebar-subitem {
  padding: 0.4rem 1.25rem 0.4rem 3.25rem;
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
  border-left: 2px solid transparent;
}
.sidebar-subitem:hover { color: var(--text); background: rgba(255,255,255,0.02); }
.sidebar-subitem.active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: rgba(59, 130, 246, 0.06);
}

/* ─── DOCUMENTATION CONTENT ─── */
.doc-content {
  margin-left: 280px;
  flex: 1;
  padding: 2.5rem 3.5rem 4rem;
  max-width: 960px;
  animation: fadeIn 0.35s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.doc-content h1 {
  font-size: 2.25rem;
  font-weight: 800;
  font-family: Geist Pixel;
  margin-bottom: 0.5rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}
.doc-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 2rem 0 0.75rem;
  color: var(--text);
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--glass-border);
}
.doc-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
  color: var(--text);
}
.doc-content p {
  margin-bottom: 1rem;
  color: var(--text-muted);
  line-height: 1.75;
  font-size: 0.95rem;
}
.doc-content ul, .doc-content ol {
  margin: 0.5rem 0 1rem 1.5rem;
  color: var(--text-muted);
  line-height: 1.75;
}
.doc-content li { margin-bottom: 0.3rem; }
.doc-content strong { color: var(--text); font-weight: 600; }
.doc-content a {
  color: var(--accent-cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.doc-content a:hover { border-bottom-color: var(--accent-cyan); }

.doc-content code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85em;
  background: rgba(59, 130, 246, 0.1);
  padding: 0.15em 0.45em;
  border-radius: 4px;
  color: var(--accent-hover);
}
.doc-content pre {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin: 1rem 0 1.5rem;
  position: relative;
}
.doc-content pre code {
  background: none;
  padding: 0;
  font-size: 0.82rem;
  color: var(--text);
  line-height: 1.65;
  tab-size: 2;
}

.doc-content blockquote {
  border-left: 3px solid var(--accent-cyan);
  background: rgba(6, 182, 212, 0.05);
  padding: 0.75rem 1.25rem;
  margin: 1rem 0;
  border-radius: 0 8px 8px 0;
  color: var(--text-muted);
}
.doc-content blockquote strong { color: var(--text); }

.doc-content hr {
  border: none;
  height: 1px;
  background: var(--glass-border);
  margin: 2rem 0;
}

.doc-content .tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  margin-right: 0.4rem;
}
.doc-content .tag-new { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.doc-content .tag-beta { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
.doc-content .tag-deprecated { background: rgba(239, 68, 68, 0.15); color: var(--danger); }

.doc-content .content-section { display: none; }
.doc-content .content-section.active { display: block; }

@media (max-width: 768px) {
  .sidebar { display: none; }
  .doc-content { margin-left: 0; padding: 1.5rem; }
}