@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --color-bg: #0F172A;
  --color-surface: #1E293B;
  --color-surface-hover: #283548;
  --color-border: #334155;
  --color-border-subtle: #1E293B;
  --color-text-main: #F8FAFC;
  --color-text-secondary: #CBD5E1;
  --color-text-muted: #94A3B8;
  --color-primary: #2563EB;
  --color-primary-hover: #1D4ED8;
  --color-accent: #10B981;
  --color-danger: #EF4444;
  --color-warning: #F59E0B;
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: #38BDF8;
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: #7DD3FC;
  text-decoration: underline;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header & Nav */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: #FFFFFF;
  font-weight: 800;
  font-size: 1.25rem;
  text-decoration: none;
}

.brand-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--color-text-secondary);
  font-size: 0.92rem;
  font-weight: 500;
}

.nav-links a:hover {
  color: #FFFFFF;
  text-decoration: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn-primary {
  background: #2563EB;
  color: #FFFFFF;
}

.btn-primary:hover {
  background: #1D4ED8;
  color: #FFFFFF;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text-main);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-surface-hover);
  color: #FFFFFF;
  text-decoration: none;
}

.btn-chrome {
  background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
  color: #FFFFFF;
  border: 1px solid #3B82F6;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.4);
}

.btn-chrome:hover {
  background: #1D4ED8;
  color: #FFFFFF;
  text-decoration: none;
}

/* Breadcrumbs */
.breadcrumbs {
  padding: 1.25rem 0 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.breadcrumbs a {
  color: var(--color-text-muted);
}

.breadcrumbs a:hover {
  color: #FFFFFF;
}

.breadcrumbs span {
  color: var(--color-border);
}

/* Hero */
.page-hero {
  padding: 3rem 0 4rem;
  text-align: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  background: rgba(37, 99, 235, 0.15);
  color: #60A5FA;
  border: 1px solid rgba(96, 165, 250, 0.3);
  border-radius: 9999px;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  color: #FFFFFF;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  max-width: 760px;
  margin: 0 auto 2rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Sections */
.section {
  padding: 4rem 0;
  border-top: 1px solid var(--color-border);
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  color: #FFFFFF;
}

.section-intro {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  max-width: 720px;
  margin-bottom: 2.5rem;
}

/* Grid Cards */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(460px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 2rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  border-color: #475569;
  transform: translateY(-2px);
}

.card-icon {
  width: 44px;
  height: 44px;
  background: rgba(37, 99, 235, 0.15);
  color: #60A5FA;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: #FFFFFF;
}

.card p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Comparison Table */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  margin: 2rem 0;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.compare-table th, .compare-table td {
  padding: 1.15rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.95rem;
}

.compare-table th {
  background: rgba(15, 23, 42, 0.6);
  font-weight: 700;
  color: #FFFFFF;
}

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

.check {
  color: var(--color-accent);
  font-weight: 700;
}

.cross {
  color: var(--color-danger);
  font-weight: 700;
}

/* Checklist UI */
.checklist-group {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 2rem;
  margin-bottom: 2rem;
}

.checklist-group h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.checklist-items {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  font-size: 0.98rem;
  color: var(--color-text-secondary);
  padding: 0.65rem;
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.4);
}

.checklist-item strong {
  color: #FFFFFF;
}

.check-icon {
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 0.15rem;
}

/* CTA Banner */
.cta-box {
  background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
  border: 1px solid #3B82F6;
  border-radius: 16px;
  padding: 3.5rem 2rem;
  text-align: center;
  box-shadow: 0 20px 40px -10px rgba(37, 99, 235, 0.2);
  margin: 4rem 0;
}

.cta-box h2 {
  font-size: 2.25rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 1rem;
}

.cta-box p {
  color: var(--color-text-secondary);
  font-size: 1.1rem;
  max-width: 650px;
  margin: 0 auto 2rem;
}

/* Author Box */
.author-card {
  display: flex;
  gap: 2rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 2.5rem;
  margin: 2rem 0;
  align-items: center;
}

.author-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2563EB, #10B981);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  font-weight: 800;
  color: #FFFFFF;
  flex-shrink: 0;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: #0B1120;
  padding: 4rem 0 2rem;
  margin-top: 4rem;
}

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

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .grid-2 {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
  }
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

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

.footer-links a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}