/* =============================================
   MacMind Blog — Shared Design System CSS
   Must match App.tsx / index.css variables
   ============================================= */

:root {
  --color-midnight: #09090b;
  --color-midnight-2: #0d1219;
  --color-midnight-3: #111827;
  --color-midnight-light: #141820;
  --color-white: #f4f4f5;
  --color-graphite-300: #c4c4cc;
  --color-graphite-400: #a1a1aa;
  --color-graphite-500: #71717a;
  --color-graphite-600: #52525b;
  --color-neon-teal-400: #66d9c5;
  --color-neon-teal-500: #102e28;
  --color-neon-violet-400: #a78bfa;
  --color-neon-violet-500: #2e1065;
  --color-neon-rose-400: #f43f5e;
  --color-neon-rose-500: #4c0519;

  --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'SF Pro Text', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', ui-monospace, monospace;
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  background: var(--color-midnight);
  color: var(--color-white);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ---- Noise texture ---- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

/* ---- Mesh gradient background ---- */
.mesh-gradient {
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(102, 217, 197, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 30%, rgba(139, 92, 246, 0.10) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 50% 80%, rgba(244, 63, 94, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse 40% 30% at 70% 70%, rgba(102, 217, 197, 0.08) 0%, transparent 45%),
    var(--color-midnight);
}

/* ---- Layout ---- */
.container {
  max-width: 48rem;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

.container-narrow {
  max-width: 36rem;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

/* ---- Navigation ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.5s;
}

.nav.scrolled {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.nav-brand-icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.5rem;
  background: rgba(102, 217, 197, 0.1);
  border: 1px solid rgba(102, 217, 197, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-brand-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-white);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.875rem;
  color: var(--color-graphite-400);
  text-decoration: none;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: var(--color-white);
}

.nav-cta {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  background: var(--color-neon-teal-400);
  color: #061014;
  border-radius: 0.5rem;
  text-decoration: none;
  transition: all 0.3s;
}

.nav-cta:hover {
  background: #7ee8d6;
  box-shadow: 0 0 30px rgba(102, 217, 197, 0.3);
}

/* ---- Hero ---- */
.hero {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 8rem 1.5rem 4rem;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 1rem;
  border-radius: 9999px;
  border: 1px solid rgba(102, 217, 197, 0.2);
  background: rgba(102, 217, 197, 0.05);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-neon-teal-400);
  margin-bottom: 2rem;
}

.hero-badge-dot {
  width: 0.375rem;
  height: 0.375rem;
  border-radius: 50%;
  background: var(--color-neon-teal-400);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.hero h1 .gradient {
  background: linear-gradient(135deg, #66d9c5 0%, #a78bfa 50%, #f43f5e 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-graphite-400);
  max-width: 36rem;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

/* ---- Blog post layout ---- */
.blog-header {
  padding: 8rem 0 4rem;
  text-align: center;
  position: relative;
}

.blog-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.blog-tag {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  background: rgba(102, 217, 197, 0.08);
  border: 1px solid rgba(102, 217, 197, 0.2);
  color: var(--color-neon-teal-400);
}

.blog-date {
  font-size: 0.75rem;
  color: var(--color-graphite-500);
}

.blog-header h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.blog-header .lead {
  font-size: 1.125rem;
  color: var(--color-graphite-400);
  max-width: 36rem;
  margin: 0 auto;
  line-height: 1.7;
}

/* ---- Prose content ---- */
.prose {
  max-width: 36rem;
  margin: 0 auto;
  padding: 3rem 1.5rem 6rem;
  position: relative;
  z-index: 1;
}

.prose h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-white);
  margin-top: 3rem;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.prose h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-white);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.prose p {
  color: var(--color-graphite-300);
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.prose a {
  color: var(--color-neon-teal-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(102, 217, 197, 0.3);
  transition: border-color 0.3s;
}

.prose a:hover {
  border-color: var(--color-neon-teal-400);
}

.prose ul, .prose ol {
  color: var(--color-graphite-300);
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
  line-height: 1.8;
}

.prose li {
  margin-bottom: 0.5rem;
}

.prose strong {
  color: var(--color-white);
  font-weight: 600;
}

.prose blockquote {
  border-left: 3px solid var(--color-neon-teal-400);
  padding: 1rem 1.5rem;
  margin: 2rem 0;
  background: rgba(102, 217, 197, 0.05);
  border-radius: 0 0.5rem 0.5rem 0;
}

.prose blockquote p {
  color: var(--color-graphite-300);
  font-style: italic;
  margin: 0;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: rgba(255, 255, 255, 0.06);
  padding: 0.125rem 0.375rem;
  border-radius: 0.25rem;
  color: var(--color-neon-teal-400);
}

.prose pre {
  background: var(--color-midnight-2);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 0.75rem;
  padding: 1.5rem;
  margin: 1.5rem 0;
  overflow-x: auto;
}

.prose pre code {
  background: none;
  padding: 0;
  font-size: 0.875rem;
  color: var(--color-graphite-300);
}

.prose hr {
  border: none;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  margin: 3rem 0;
}

/* ---- Feature cards (for comparison pages) ---- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin: 2rem 0;
}

.feature-card {
  padding: 1.5rem;
  border-radius: 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.02);
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-white);
  margin: 0 0 0.5rem;
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--color-graphite-400);
  margin: 0;
  line-height: 1.6;
}

/* ---- CTA Box ---- */
.cta-box {
  background: rgba(102, 217, 197, 0.05);
  border: 1px solid rgba(102, 217, 197, 0.15);
  border-radius: 1rem;
  padding: 2rem;
  text-align: center;
  margin: 3rem 0;
}

.cta-box h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 0.75rem;
}

.cta-box p {
  color: var(--color-graphite-400);
  margin-bottom: 1.5rem;
  font-size: 0.9375rem;
}

.btn-primary {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  background: var(--color-neon-teal-400);
  color: #061014;
  border-radius: 0.625rem;
  text-decoration: none;
  transition: all 0.3s;
}

.btn-primary:hover {
  background: #7ee8d6;
  box-shadow: 0 0 30px rgba(102, 217, 197, 0.35);
}

/* ---- Footer ---- */
.footer {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding: 2rem 1.5rem;
  text-align: center;
  position: relative;
  z-index: 1;
}

.footer p {
  font-size: 0.75rem;
  color: var(--color-graphite-500);
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #111113; }
::-webkit-scrollbar-thumb { background: #2b2b31; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-neon-teal-400); }

/* ---- Selection ---- */
::selection {
  background: rgba(102, 217, 197, 0.25);
  color: #f4f4f5;
}

/* ---- Responsive ---- */
@media (max-width: 640px) {
  .nav-links { display: none; }
  .hero { padding-top: 6rem; }
  .feature-grid { grid-template-columns: 1fr; }
}