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

:root {
  --bg-primary: #0e0703;
  --bg-secondary: #0a0402;
  --bg-tertiary: #140d08;
  --border: transparent;
  --text-primary: #e1e4e8;
  --text-secondary: #8b949e;
  --text-tertiary: #484f58;
  --accent: #f97316;
  --accent-hover: #ea580c;
  --font-sans: 'Figtree', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'JetBrains Mono', monospace;
  --container-padding: 64px;
  --section-gap: 56px;
  --header-h: 64px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

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

a:hover {
  color: var(--accent-hover);
}

img {
  max-width: 100%;
  display: block;
}

pre,
code {
  font-family: var(--font-mono);
}

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: none;
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

@media (min-width: 1600px) {
  .container {
    padding: 0 calc(var(--container-padding) + 32px);
  }
}

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  height: var(--header-h);
}

.header .container {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 24px;
}

.header-logo {
  display: flex;
  align-items: center;
  color: var(--accent);
  font-family: Consolas, monospace;
  font-weight: 700;
  font-size: 1.375rem;
  letter-spacing: -0.02em;
  flex-shrink: 0;
  filter: drop-shadow(0 2px 3px rgba(0, 0, 0, 0.6));

}

.header-logo:hover {
  color: var(--text-primary);
}

.header-tagline {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  display: none;
}

@media (min-width: 640px) {
  .header-tagline {
    display: inline;
  }
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.header-nav a {
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s, background 0.2s;
}

.header-nav a:hover,
.header-nav a.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

/* Hamburger */
.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
  border-radius: 6px;
  transition: background 0.2s;
}

.hamburger:hover {
  background: rgba(255, 255, 255, 0.05);
}

.hamburger svg {
  display: block;
}

/* ===== Mobile Drawer ===== */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}

.drawer-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.drawer {
  position: fixed;
  top: 0;
  right: -260px;
  width: 260px;
  height: 100%;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  z-index: 201;
  transition: right 0.25s;
  display: flex;
  flex-direction: column;
  padding: 24px;
  gap: 8px;
}

.drawer.open {
  right: 0;
}

.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.drawer-close {
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
  border-radius: 6px;
}

.drawer-close:hover {
  background: rgba(255, 255, 255, 0.05);
}

.drawer a {
  display: block;
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s, background 0.2s;
}

.drawer a:hover,
.drawer a.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

body.drawer-open {
  overflow: hidden;
}

/* ===== Hero ===== */
.hero {
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: 3.25rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
}

.hero h1 span {
  color: var(--accent);
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin: 0 auto 36px;
  line-height: 1.7;
}

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

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 0.9375rem;
  font-weight: 600;
  font-family: var(--font-sans);
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
  text-decoration: none;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

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

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

/* ===== Sections ===== */
.section {
  padding: var(--section-gap) 0;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.0625rem;
  margin: 0 auto;
}

.section-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* ===== Feature Grid ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.feature-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 28px;
  transition: border-color 0.2s;
}

.feature-card:hover {
  border-color: var(--accent);
}


.feature-card h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ===== Description List ===== */
.desc-list {
  display: flex;
  flex-direction: column;
}

.desc-list-item {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.desc-list-item:last-child {
  border-bottom: none;
}

.desc-list-label {
  font-weight: 600;
  font-size: 0.9375rem;
  min-width: 160px;
  flex-shrink: 0;
  color: var(--text-primary);
}

.desc-list-value {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

/* ===== Code Block ===== */
.code-block {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 20px;
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
}

.code-block pre {
  padding: 16px;
  overflow-x: auto;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--text-primary);
}

.code-block code {
  font-size: inherit;
}

/* Syntax highlight classes */
.cmd { color: #e1e4e8; }
.comment { color: #484f58; }
.dim { color: #8b949e; }
.keyword { color: #ff7b72; }
.string { color: #a5d6ff; }
.func { color: #d2a8ff; }
.var { color: #ffa657; }
.num { color: #79c0ff; }

/* ===== Table ===== */
.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

thead th {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 2px solid var(--border);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}

tbody td:first-child {
  color: var(--text-primary);
  font-weight: 500;
}

tbody tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* ===== Inline code ===== */
.inline-code {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 0.8125em;
  color: var(--accent);
  font-family: var(--font-mono);
}

/* ===== Framework badges ===== */
.badge-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.8125rem;
  font-weight: 500;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-primary);
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.badge-dot.js { background: #f7df1e; }
.badge-dot.py { background: #3572a5; }
.badge-dot.java { background: #b07219; }
.badge-dot.php { background: #777bb3; }

/* ===== Steps ===== */
.steps {
  counter-reset: step;
}

.step {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

.step:last-child {
  border-bottom: none;
}

.step-num {
  counter-increment: step;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(249, 115, 22, 0.1);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
  flex-shrink: 0;
}

.step-num::before {
  content: counter(step);
}

.step-body h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.step-body p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ===== Page header ===== */
.page-header {
  padding: 80px 0 48px;
  text-align: center;
}

.page-header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.page-header p {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  margin: 0 auto;
}

/* ===== Prose ===== */

.prose h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 48px;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.prose h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 12px;
}

.prose p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.7;
}

.prose ul,
.prose ol {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  padding-left: 24px;
  line-height: 1.7;
}

.prose li {
  margin-bottom: 6px;
}

.prose strong {
  color: var(--text-primary);
}

/* ===== Content section (alternating bg) ===== */
.content-section {
  padding: 56px 0;
}

.content-section:nth-child(even) {
  background: var(--bg-secondary);
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 56px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.footer-brand p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-col h4 {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 4px 0;
  transition: color 0.2s;
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .hero h1 {
    font-size: 2.5rem;
  }
}

@media (max-width: 768px) {
  :root {
    --container-padding: 24px;
    --section-gap: 48px;
    --header-h: 56px;
  }

  .header-nav {
    display: none;
  }

  .hamburger {
    display: block;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .page-header h1 {
    font-size: 2rem;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .desc-list-item {
    flex-direction: column;
    gap: 4px;
  }

  .desc-list-label {
    min-width: auto;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .code-block pre {
    font-size: 0.75rem;
  }

  table {
    font-size: 0.8125rem;
  }

  thead th,
  tbody td {
    padding: 10px 12px;
  }
}

@media (max-width: 600px) {
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .hero-actions .btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  :root {
    --container-padding: 16px;
    --section-gap: 40px;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .page-header h1 {
    font-size: 1.625rem;
  }

  .section-header h2 {
    font-size: 1.5rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}