/* ============================================
   NextSQL — GitHub Pages Stylesheet
   Color: Navy (#0B1120) + Blue (#3B82F6)
   Fonts: Syne (display) · Lexend (body) · Fira Code (mono)
   ============================================ */

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

:root {
  --bg-deep: #060d1b;
  --bg-primary: #0b1120;
  --bg-secondary: #111827;
  --bg-card: #162033;
  --bg-card-hover: #1c2a45;
  --blue-700: #1d4ed8;
  --blue-600: #2563eb;
  --blue-500: #3b82f6;
  --blue-400: #60a5fa;
  --blue-300: #93c5fd;
  --cyan-400: #22d3ee;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: #1e293b;
  --border-light: #334155;
  --code-bg: #0d1525;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: "Lexend", sans-serif;
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: var(--blue-400);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: var(--blue-300);
}

::selection {
  background: var(--blue-600);
  color: #fff;
}

img {
  max-width: 100%;
}

/* ---------- Typography ---------- */
h1,
h2,
h3,
h4 {
  font-family: "Syne", sans-serif;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  background: rgba(11, 17, 32, 0.78);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: "Syne", sans-serif;
  font-weight: 800;
  font-size: 1.25rem;
  color: #fff;
}

.nav-logo .logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--blue-500), var(--cyan-400));
  display: grid;
  place-items: center;
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--bg-deep);
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: #fff;
}

.nav-links .gh-link {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.nav-links .gh-link svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* Mobile nav */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle svg {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(11, 17, 32, 0.96);
    padding: 1rem 2rem 1.5rem;
    gap: 1rem;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.open {
    display: flex;
  }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 6rem 2rem 4rem;
}

/* Grid pattern background */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(
      rgba(59, 130, 246, 0.06) 1px,
      transparent 1px
    ),
    linear-gradient(90deg, rgba(59, 130, 246, 0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(
    ellipse 70% 60% at 50% 40%,
    black 20%,
    transparent 70%
  );
}

/* Glow orbs */
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
}
.hero-glow--1 {
  width: 600px;
  height: 600px;
  top: -10%;
  left: -10%;
  background: rgba(29, 78, 216, 0.18);
}
.hero-glow--2 {
  width: 500px;
  height: 500px;
  bottom: -5%;
  right: -8%;
  background: rgba(34, 211, 238, 0.1);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.25);
  color: var(--blue-400);
  font-size: 0.82rem;
  font-weight: 500;
  margin-bottom: 1.75rem;
  animation: fadeUp 0.8s ease both;
}

.hero h1 {
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  color: #fff;
  margin-bottom: 1.25rem;
  animation: fadeUp 0.8s 0.1s ease both;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--blue-400), var(--cyan-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 2.5rem;
  font-weight: 400;
  animation: fadeUp 0.8s 0.2s ease both;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeUp 0.8s 0.3s ease both;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: 999px;
  font-family: "Lexend", sans-serif;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
  color: #fff;
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}
.btn-primary:hover {
  box-shadow: 0 0 32px rgba(59, 130, 246, 0.5);
  transform: translateY(-1px);
  color: #fff;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-light);
  color: var(--text-primary);
}
.btn-outline:hover {
  border-color: var(--blue-500);
  color: #fff;
  background: rgba(59, 130, 246, 0.08);
}

/* ---------- Code Showcase ---------- */
.code-showcase {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 3.5rem auto 0;
  animation: fadeUp 0.8s 0.45s ease both;
}

.code-window {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow), 0 0 60px rgba(59, 130, 246, 0.08);
}

.code-titlebar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border);
}

.code-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.code-dot--r {
  background: #ef4444;
}
.code-dot--y {
  background: #eab308;
}
.code-dot--g {
  background: #22c55e;
}

.code-titlebar span {
  margin-left: 0.5rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: "Fira Code", monospace;
}

.code-body {
  padding: 1.25rem 1.5rem;
  font-family: "Fira Code", monospace;
  font-size: 0.85rem;
  line-height: 1.8;
  overflow-x: auto;
  text-align: left;
}

.code-body .kw {
  color: #c084fc;
  font-weight: 600;
}
.code-body .fn {
  color: var(--blue-400);
}
.code-body .ty {
  color: var(--cyan-400);
}
.code-body .var {
  color: #fbbf24;
}
.code-body .op {
  color: #f87171;
}
.code-body .str {
  color: #34d399;
}
.code-body .cm {
  color: var(--text-muted);
  font-style: italic;
}
.code-body .prop {
  color: #e2e8f0;
}
.code-body .tbl {
  color: #fb923c;
}

/* ---------- Features Section ---------- */
.features {
  padding: 5rem 2rem 6rem;
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  display: inline-block;
  color: var(--blue-400);
  font-family: "Fira Code", monospace;
  font-size: 0.82rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
  letter-spacing: 0.05em;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  color: #fff;
  margin-bottom: 1rem;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 600px;
  margin-bottom: 3rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: all var(--transition);
}
.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(59, 130, 246, 0.3);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-size: 1.3rem;
  margin-bottom: 1rem;
}
.feature-icon--blue {
  background: rgba(59, 130, 246, 0.12);
  color: var(--blue-400);
}
.feature-icon--cyan {
  background: rgba(34, 211, 238, 0.12);
  color: var(--cyan-400);
}
.feature-icon--purple {
  background: rgba(168, 85, 247, 0.12);
  color: #a78bfa;
}
.feature-icon--amber {
  background: rgba(245, 158, 11, 0.12);
  color: #fbbf24;
}

.feature-card h3 {
  font-size: 1.1rem;
  color: #fff;
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---------- Getting Started ---------- */
.getting-started {
  padding: 5rem 2rem 6rem;
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.getting-started-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.steps {
  display: grid;
  gap: 1.5rem;
  margin-top: 3rem;
}

.step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 1.25rem;
  align-items: start;
}

.step-number {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  display: grid;
  place-items: center;
  font-family: "Syne", sans-serif;
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--blue-400);
  flex-shrink: 0;
}

.step-content h3 {
  font-size: 1.1rem;
  color: #fff;
  margin-bottom: 0.4rem;
}

.step-content p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin-bottom: 0.75rem;
}

.step-code {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.8rem 1.1rem;
  font-family: "Fira Code", monospace;
  font-size: 0.82rem;
  color: var(--text-primary);
  overflow-x: auto;
  line-height: 1.7;
}

.step-code .prompt {
  color: var(--text-muted);
  user-select: none;
}

/* ---------- Install Terminal ---------- */
.install-terminal {
  margin-top: 0.75rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow), 0 0 40px rgba(59, 130, 246, 0.06);
}

.install-terminal-bar {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 0.7rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border);
}

.install-terminal-bar-top {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.install-terminal-tabs {
  display: flex;
  gap: 0.25rem;
}

.install-terminal-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.75rem;
  border-radius: 6px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-muted);
  font-family: "Fira Code", monospace;
  font-size: 0.72rem;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.install-terminal-tab:hover {
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.04);
}

.install-terminal-tab.is-active {
  color: var(--blue-400);
  background: rgba(59, 130, 246, 0.1);
  border-color: rgba(59, 130, 246, 0.25);
}

.install-terminal-body {
  background: var(--code-bg);
  padding: 1rem 1.25rem;
  font-family: "Fira Code", monospace;
  font-size: 0.75rem;
  line-height: 1.8;
  min-height: 3.2rem;
}

.install-terminal-panel {
  display: none;
  word-break: break-all;
}

.install-terminal-panel.is-active {
  display: block;
}

.install-terminal-panel .prompt {
  color: var(--text-muted);
  user-select: none;
}

/* ---------- VSCode Extension ---------- */
.vscode-section {
  padding: 5rem 2rem 6rem;
  max-width: 1100px;
  margin: 0 auto;
}

.vscode-inner {
  max-width: 1100px;
}

.vscode-card {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-top: 2rem;
  transition: all var(--transition);
}

.vscode-card:hover {
  border-color: rgba(59, 130, 246, 0.3);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.vscode-card-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  display: grid;
  place-items: center;
  color: var(--blue-400);
  flex-shrink: 0;
}

.vscode-card-body h3 {
  font-size: 1.15rem;
  color: #fff;
  margin-bottom: 0.75rem;
}

.vscode-features {
  list-style: none;
  margin-bottom: 1.25rem;
}

.vscode-features li {
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding: 0.2rem 0;
  padding-left: 1.2rem;
  position: relative;
}

.vscode-features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue-500);
}

.vscode-features code {
  font-family: "Fira Code", monospace;
  font-size: 0.85em;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.15);
  padding: 0.1em 0.35em;
  border-radius: 4px;
  color: var(--blue-300);
}

@media (max-width: 600px) {
  .vscode-card {
    flex-direction: column;
  }
}

/* ---------- Footer ---------- */
.footer {
  padding: 3rem 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

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

.footer-links {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  margin-bottom: 1rem;
  list-style: none;
}

/* ---------- Syntax Page Layout ---------- */
.docs-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
  padding-top: 64px;
}

@media (max-width: 900px) {
  .docs-layout {
    grid-template-columns: 1fr;
  }
}

/* Sidebar */
.sidebar {
  position: sticky;
  top: 64px;
  height: calc(100vh - 64px);
  overflow-y: auto;
  border-right: 1px solid var(--border);
  background: var(--bg-primary);
  padding: 1.5rem 0;
}

.sidebar::-webkit-scrollbar {
  width: 4px;
}
.sidebar::-webkit-scrollbar-thumb {
  background: var(--border-light);
  border-radius: 2px;
}

.sidebar-title {
  font-family: "Syne", sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  padding: 0 1.25rem;
  margin-bottom: 0.75rem;
}

.sidebar-nav {
  list-style: none;
}

.sidebar-nav a {
  display: block;
  padding: 0.45rem 1.25rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
  border-left: 2px solid transparent;
  transition: all var(--transition);
}

.sidebar-nav a:hover {
  color: var(--text-primary);
  background: rgba(59, 130, 246, 0.05);
}

.sidebar-nav a.active {
  color: var(--blue-400);
  border-left-color: var(--blue-500);
  background: rgba(59, 130, 246, 0.08);
}

/* Sidebar overlay (hidden by default, shown on mobile) */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 79;
}

/* Mobile sidebar toggle */
.sidebar-toggle {
  display: none;
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 90;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--blue-600);
  color: #fff;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
  font-size: 1.2rem;
}

@media (max-width: 900px) {
  .sidebar {
    position: fixed;
    left: -280px;
    top: 64px;
    width: 280px;
    z-index: 80;
    transition: left var(--transition);
  }
  .sidebar.open {
    left: 0;
  }
  .sidebar-toggle {
    display: grid;
    place-items: center;
  }
  .sidebar-overlay.open {
    display: block;
  }
}

/* Docs main content */
.docs-main {
  padding: 2.5rem 3rem 4rem;
  max-width: 860px;
  min-width: 0;
}

@media (max-width: 900px) {
  .docs-main {
    padding: 2rem 1.5rem 4rem;
  }
}

.docs-main .loading {
  text-align: center;
  padding: 4rem 0;
  color: var(--text-muted);
}

.loading-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--blue-500);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 1rem;
}

/* ---------- Rendered Markdown Styles ---------- */
.md-content h1 {
  font-size: 2rem;
  color: #fff;
  margin: 3rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.md-content h1:first-child {
  margin-top: 0;
}

.md-content h2 {
  font-size: 1.5rem;
  color: #fff;
  margin: 2.5rem 0 0.75rem;
}

.md-content h3 {
  font-size: 1.15rem;
  color: var(--text-primary);
  margin: 2rem 0 0.5rem;
}

.md-content h4 {
  font-size: 1rem;
  color: var(--text-primary);
  margin: 1.5rem 0 0.5rem;
}

.md-content p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.md-content ul,
.md-content ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
  color: var(--text-secondary);
}

.md-content li {
  margin-bottom: 0.35rem;
}

.md-content li code,
.md-content p code {
  font-family: "Fira Code", monospace;
  font-size: 0.85em;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.15);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  color: var(--blue-300);
}

.md-content pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
  overflow-x: auto;
  font-size: 0.84rem;
  line-height: 1.75;
}

.md-content pre code {
  font-family: "Fira Code", monospace;
  background: none;
  border: none;
  padding: 0;
  color: var(--text-primary);
}

.md-content blockquote {
  border-left: 3px solid var(--blue-500);
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  background: rgba(59, 130, 246, 0.05);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-secondary);
}

.md-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
}

.md-content th {
  text-align: left;
  padding: 0.6rem 0.8rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-weight: 600;
}

.md-content td {
  padding: 0.5rem 0.8rem;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.md-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

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

/* Section divider between markdown files */
.section-divider {
  height: 1px;
  background: var(--border);
  margin: 3.5rem 0;
}

/* ---------- Animations ---------- */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ---------- Scroll Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}