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

:root {
  --sidebar-w: 260px;
  --color-bg: #f8f9fa;
  --color-surface: #ffffff;
  --color-sidebar: #1a1a2e;
  --color-sidebar-hover: #16213e;
  --color-primary: #6c63ff;
  --color-primary-light: #8b83ff;
  --color-text: #2d3436;
  --color-text-secondary: #636e72;
  --color-border: #e0e0e0;
  --color-code-bg: #f1f3f5;
  --color-hero-gradient: linear-gradient(135deg, #6c63ff 0%, #3f3d9e 100%);
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.10);
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  font-size: 15px;
}

a { color: var(--color-primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-primary-light); }

/* ===== Sidebar ===== */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--color-sidebar);
  color: #b0b0c8;
  overflow-y: auto;
  z-index: 100;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s;
}

.sidebar-header {
  padding: 24px 20px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.sidebar-header .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.sidebar-header .logo svg { flex-shrink: 0; }

.sidebar-header .version {
  display: inline-block;
  margin-top: 8px;
  padding: 2px 8px;
  background: rgba(108,99,255,0.25);
  color: var(--color-primary-light);
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
}

.sidebar nav { flex: 1; padding: 12px 0; }

.sidebar nav .nav-section {
  padding: 8px 20px 4px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: #6c6c8a;
}

.sidebar nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  color: #b0b0c8;
  font-size: 13.5px;
  font-weight: 500;
  border-left: 3px solid transparent;
  transition: all 0.15s;
}

.sidebar nav a:hover {
  background: var(--color-sidebar-hover);
  color: #fff;
}

.sidebar nav a.active {
  background: var(--color-sidebar-hover);
  color: #fff;
  border-left-color: var(--color-primary);
}

.sidebar nav a svg {
  width: 16px; height: 16px;
  flex-shrink: 0;
  opacity: 0.6;
}

.sidebar nav a.active svg,
.sidebar nav a:hover svg { opacity: 1; }

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 12px;
}

.sidebar-footer a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #8888a8;
  font-size: 12px;
}

.sidebar-footer a:hover { color: #fff; }

/* ===== Mobile burger ===== */
.burger {
  display: none;
  position: fixed;
  top: 14px; left: 14px;
  z-index: 200;
  background: var(--color-sidebar);
  border: none;
  color: #fff;
  width: 40px; height: 40px;
  border-radius: 8px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 90;
}

/* ===== Main content ===== */
.main {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
}

.content {
  max-width: 820px;
  margin: 0 auto;
  padding: 40px 32px 80px;
}

/* ===== Hero (index only) ===== */
.hero {
  background: var(--color-hero-gradient);
  color: #fff;
  padding: 72px 32px 56px;
  text-align: center;
}

.hero h1 {
  font-size: 2.6rem;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 16px;
}

.hero p {
  font-size: 1.15rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto 28px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 14px;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
}

.btn-white {
  background: #fff;
  color: var(--color-primary);
}
.btn-white:hover { background: #f0efff; color: var(--color-primary); }

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.4);
}
.btn-outline:hover { border-color: #fff; color: #fff; }

/* ===== Feature cards (index) ===== */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin: 40px 0;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: box-shadow 0.2s;
}

.feature-card:hover { box-shadow: var(--shadow-lg); }

.feature-card .icon {
  width: 40px; height: 40px;
  background: rgba(108,99,255,0.1);
  color: var(--color-primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.feature-card h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
}

.feature-card p {
  font-size: 13.5px;
  color: var(--color-text-secondary);
  line-height: 1.55;
}

/* ===== Quick install (index) ===== */
.install-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  margin: 40px 0;
  box-shadow: var(--shadow);
}

.install-block h2 {
  font-size: 20px;
  margin-bottom: 16px;
}

/* ===== Typography ===== */
.content h1 { font-size: 2rem; font-weight: 800; margin-bottom: 12px; letter-spacing: -0.5px; }
.content h2 { font-size: 1.45rem; font-weight: 700; margin: 40px 0 14px; padding-bottom: 8px; border-bottom: 2px solid var(--color-border); }
.content h3 { font-size: 1.15rem; font-weight: 700; margin: 28px 0 10px; }
.content h4 { font-size: 1rem; font-weight: 600; margin: 22px 0 8px; }
.content p { margin-bottom: 14px; }
.content ul, .content ol { margin: 0 0 14px 24px; }
.content li { margin-bottom: 4px; }

.content > .page-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 6px;
}

.content > .page-subtitle {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  margin-bottom: 32px;
}

/* ===== Inline code & code blocks ===== */
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-code-bg);
  padding: 2px 6px;
  border-radius: 4px;
}

pre {
  background: #282a36;
  color: #f8f8f2;
  border-radius: var(--radius);
  padding: 18px 20px;
  overflow-x: auto;
  margin: 0 0 18px;
  font-size: 13px;
  line-height: 1.65;
  box-shadow: var(--shadow);
}

pre code {
  background: none;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

/* ===== Tables ===== */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 18px;
  font-size: 13.5px;
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

thead { background: #f4f5f7; }
th {
  text-align: left;
  padding: 10px 14px;
  font-weight: 700;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-secondary);
  border-bottom: 2px solid var(--color-border);
}

td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

tr:last-child td { border-bottom: none; }

/* ===== Callout boxes ===== */
.callout {
  border-left: 4px solid var(--color-primary);
  background: rgba(108,99,255,0.06);
  padding: 14px 18px;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 18px 0;
  font-size: 14px;
}

.callout-tip { border-left-color: #00b894; background: rgba(0,184,148,0.06); }
.callout-warning { border-left-color: #fdcb6e; background: rgba(253,203,110,0.08); }

.callout strong { display: block; margin-bottom: 4px; }

/* ===== Steps ===== */
.steps { counter-reset: step; list-style: none; margin-left: 0; padding-left: 0; }
.steps li {
  counter-increment: step;
  padding: 12px 0 12px 48px;
  position: relative;
  border-left: 2px solid var(--color-border);
  margin-left: 16px;
}
.steps li:last-child { border-left-color: transparent; }
.steps li::before {
  content: counter(step);
  position: absolute;
  left: -14px; top: 10px;
  width: 28px; height: 28px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ===== Tool cards ===== */
.tool-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  margin: 20px 0;
  box-shadow: var(--shadow);
}

.tool-card h3 {
  margin-top: 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.tool-card h3 code {
  font-size: 1em;
  background: rgba(108,99,255,0.1);
  color: var(--color-primary);
  padding: 3px 10px;
  border-radius: 6px;
  font-weight: 700;
}

/* ===== Demo Page ===== */
.demo-figure {
  margin: 2rem 0;
  text-align: center;
}
.demo-gif {
  max-width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}
.demo-figure figcaption {
  margin-top: 0.75rem;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  font-style: italic;
}
.demo-steps {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin: 1.5rem 0;
}
.demo-step {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
}
.step-number {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-hero-gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
}
.step-content h3 {
  margin-bottom: 0.25rem;
  font-size: 1rem;
}
.step-content p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 0.93rem;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .burger { display: flex; }
  .overlay.open { display: block; }
  .main { margin-left: 0; }
  .hero h1 { font-size: 1.8rem; }
  .hero p { font-size: 1rem; }
  .content { padding: 24px 16px 60px; }
  .features { grid-template-columns: 1fr; }
}