:root {
  --bg: #090d16;
  --bg-card: #0f172a;
  --bg-card-hover: #162036;
  --bg-elevated: #1e293b;
  --border: #1e293b;
  --border-focus: #334155;
  --text: #f8fafc;
  --text-muted: #94a3b8;
  --text-subtle: #64748b;
  --accent: #00f5a0;
  --accent-secondary: #00d9f5;
  --accent-glow: rgba(0, 245, 160, 0.15);
  --code-bg: #060910;
  --header-bg: rgba(9, 13, 22, 0.85);
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', monospace;
  --container-max: 1200px;
  --transition: all 0.2s ease-in-out;
}

[data-theme='light'] {
  --bg: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-elevated: #e2e8f0;
  --border: #e2e8f0;
  --border-focus: #cbd5e1;
  --text: #0f172a;
  --text-muted: #475569;
  --text-subtle: #94a3b8;
  --accent: #059669;
  --accent-secondary: #0284c7;
  --accent-glow: rgba(5, 150, 105, 0.12);
  --code-bg: #f1f5f9;
  --header-bg: rgba(248, 250, 252, 0.9);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  transition:
    background-color 0.3s ease,
    color 0.3s ease;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  filter: brightness(1.2);
}

/* Header & Nav */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: -0.5px;
}

.brand-icon {
  width: 32px;
  height: 32px;
}

.brand-tag {
  font-size: 0.65rem;
  padding: 0.15rem 0.4rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--accent);
  font-weight: 600;
  font-family: var(--font-mono);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 500;
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

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

.theme-toggle:hover {
  border-color: var(--border-focus);
}

.btn-github {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.85rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  transition: var(--transition);
}

.btn-github:hover {
  border-color: var(--accent);
  background: var(--bg-card-hover);
}

/* Layout */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Hero Section */
.hero {
  padding: 5rem 0 3.5rem;
  text-align: center;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: 3.4rem;
  font-weight: 900;
  letter-spacing: -1.2px;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.hero-title span {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto 2rem;
  font-weight: 400;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.4rem;
  background: var(--accent);
  color: #0a0e17;
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px var(--accent-glow);
  filter: brightness(1.05);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.4rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 8px;
  transition: var(--transition);
}

.btn-secondary:hover {
  border-color: var(--border-focus);
  background: var(--bg-card-hover);
}

/* Install Box */
.install-box {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.6rem 0.85rem 0.6rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--accent);
  max-width: 500px;
  width: 100%;
  margin: 0 auto;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  transition: var(--transition);
}

.install-box:hover {
  border-color: var(--border-focus);
}

.install-box code {
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 500;
  white-space: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
  flex: 0 1 auto;
}

.install-box code::-webkit-scrollbar {
  display: none;
}

.install-copy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 6px;
  padding: 0.4rem 0.85rem;
  font-size: 0.8rem;
  font-family: var(--font-sans);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  flex-shrink: 0;
  margin-left: auto !important;
}

.install-copy-btn:hover {
  color: var(--text);
  border-color: var(--accent);
  background: var(--bg-card-hover);
  transform: translateY(-1px);
}

.install-copy-btn:active {
  transform: translateY(0);
}

.install-copy-btn.copied {
  color: #10b981;
  border-color: #10b981;
  background: rgba(16, 185, 129, 0.12);
}

.install-copy-btn svg {
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

/* Hero Visual */
.hero-visual {
  margin-top: 3.5rem;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--bg-card);
  padding: 1.5rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.hero-visual img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  display: block;
}

/* Sections */
.section {
  padding: 4.5rem 0;
  border-top: 1px solid var(--border);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3.5rem;
}

.section-tag {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
  display: block;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.6px;
  margin-bottom: 0.85rem;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
}

/* Grid & Cards */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.75rem;
  transition: var(--transition);
}

.card:hover {
  border-color: var(--border-focus);
  transform: translateY(-2px);
}

.card-icon {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  display: inline-block;
}

.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.card-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* Comparison Table */
.table-wrapper {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-card);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

th,
td {
  padding: 0.85rem 1.2rem;
  border-bottom: 1px solid var(--border);
}

th {
  background: var(--bg-elevated);
  font-weight: 700;
  color: var(--text);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

/* Code block */
.code-block {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  margin: 1rem 0;
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.45rem 1rem;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.code-content {
  padding: 1rem;
  overflow-x: auto;
  color: var(--text);
}

.code-content pre {
  margin: 0;
}

/* Docs Layout */
.docs-layout {
  display: flex;
  gap: 2.5rem;
  padding: 2.5rem 0 5rem;
  max-width: var(--container-max);
  margin: 0 auto;
}

.docs-sidebar {
  width: 250px;
  flex-shrink: 0;
  position: sticky;
  top: 5rem;
  height: calc(100vh - 6rem);
  overflow-y: auto;
  padding-right: 1rem;
}

.sidebar-group {
  margin-bottom: 1.5rem;
}

.sidebar-title {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
}

.sidebar-link {
  display: block;
  padding: 0.35rem 0.5rem;
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 500;
  transition: var(--transition);
}

.sidebar-link:hover,
.sidebar-link.active {
  color: var(--accent);
  background: var(--bg-card);
}

.docs-content {
  flex-grow: 1;
  min-width: 0;
}

.docs-content h1 {
  font-size: 2.4rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
  letter-spacing: -0.6px;
}

.docs-content h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 2rem 0 0.75rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.4rem;
}

.docs-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
}

.docs-content p {
  margin-bottom: 1rem;
  color: var(--text-muted);
  font-size: 0.98rem;
}

.docs-content ul,
.docs-content ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
  color: var(--text-muted);
}

.docs-content li {
  margin-bottom: 0.4rem;
}

/* Callouts / Alerts */
.callout {
  padding: 1rem 1.25rem;
  border-radius: 8px;
  border-left: 4px solid var(--accent);
  background: var(--bg-card);
  margin: 1.25rem 0;
  font-size: 0.92rem;
}

.callout-title {
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.25rem;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  background: var(--bg-card);
  padding: 3.5rem 0 2rem;
  margin-top: 4rem;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.footer-brand {
  max-width: 320px;
}

.footer-desc {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-top: 0.75rem;
}

.footer-col-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
}

.footer-link {
  margin-bottom: 0.5rem;
}

.footer-link a {
  color: var(--text-muted);
  font-size: 0.88rem;
}

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

.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-subtle);
  font-size: 0.82rem;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.8rem;
  }
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.2rem;
  }
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  .docs-layout {
    flex-direction: column;
  }
  .docs-sidebar {
    width: 100%;
    position: static;
    height: auto;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1.5rem;
  }
  .nav {
    display: none;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
  }
}