:root {
  /* Contemporary Design System Tokens */
  --primary: #C800DF;
  --secondary: #E60076;
  --success: #16A34A;
  --warning: #D97706;
  --danger: #DC2626;
  
  --background: #FDFBFD;
  --surface: #ffffff;
  --surface-alt: #f4f4f5;
  --surface-card: #ffffff;
  --text: #000000;
  --text-muted: #52525b;
  
  --nav-bg: rgba(0, 0, 0, 0.05);
  --nav-border: rgba(0, 0, 0, 0.1);
  --nav-link: #000000;
  --bg-radial: 45%;
  --logo-text-filter: brightness(0);
  --logo-img-filter: none;
  --btn-dark-bg: #000000;
  
  --font-sans: 'Jost', sans-serif;
  --font-mono: 'Overpass Mono', monospace;
  
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-4: 1rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;

  --transition: color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease, transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease, filter 0.3s ease;
}

[data-theme="dark"] {
  --background: #0c050e;
  --surface: #0F172A;
  --surface-alt: #1E293B;
  --surface-card: #1E293B;
  --text: #F8FAFC;
  --text-muted: #94A3B8;
  --nav-bg: rgba(255, 255, 255, 0.03);
  --nav-border: rgba(255, 255, 255, 0.08);
  --nav-link: #ffffff;
  --bg-radial: 25%;
  --logo-text-filter: brightness(0) invert(1);
  --logo-img-filter: none;
  --btn-dark-bg: linear-gradient(135deg, #0B1021 0%, #1B1B3A 100%);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--background);
  background-image: 
    radial-gradient(ellipse at top left, color-mix(in srgb, var(--primary) var(--bg-radial), transparent) 0%, transparent 60%),
    radial-gradient(ellipse at top right, color-mix(in srgb, var(--secondary) var(--bg-radial), transparent) 0%, transparent 60%);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 900;
  line-height: 1.0;
  margin-bottom: var(--spacing-4);
  color: var(--text);
  letter-spacing: -0.05em;
  text-transform: uppercase;
}

h1 { font-size: clamp(2.5rem, 5vw, 5rem); }
h2 { font-size: clamp(2.5rem, 5vw, 4rem); }
h3 { font-size: 2rem; }

p {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  color: var(--text-muted);
  margin-bottom: var(--spacing-4);
  line-height: 1.7;
}

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

a:hover {
  text-decoration: none;
  filter: brightness(1.2);
}

/* Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

/* Header / Floating Navbar */
.main-header {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 32px);
  max-width: 1000px;
  height: 64px;
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--nav-border);
  border-radius: var(--radius-pill);
  z-index: 100;
  display: flex;
  align-items: center;
}

.main-header .container {
  width: 100%;
  padding: 0 var(--spacing-6);
  height: 100%;
}

/* Accessibility: 44px+ touch targets */
a, button, .theme-toggle, .btn {
  min-height: 44px;
  min-width: 44px;
  display: inline-flex;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  text-decoration: none;
  min-height: 44px;
}

.logo .logo-img {
  height: 32px;
  width: auto;
  filter: var(--logo-img-filter);
}

.logo .logo-text {
  height: 20px;
  width: auto;
  margin-top: 2px;
  filter: var(--logo-text-filter);
}


.nav-links {
  display: flex;
  gap: var(--spacing-8);
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

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

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
}

main {
  flex: 1;
  padding-top: 120px;
}

/* Bento Grid */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--spacing-4);
  margin: var(--spacing-12) 0;
}

.bento-card {
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  padding: var(--spacing-8);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.2);
}

.bento-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

.bento-span-4 { grid-column: span 4; }
.bento-span-6 { grid-column: span 6; }
.bento-span-8 { grid-column: span 8; }
.bento-span-12 { grid-column: span 12; }

.navy-card {
  background: linear-gradient(135deg, #0B1021 0%, #1B1B3A 100%) !important;
  color: #ffffff !important;
  --text: #ffffff;
  --text-muted: #cbd5e1;
}

@media (max-width: 900px) {
  .bento-span-4, .bento-span-6, .bento-span-8 {
    grid-column: span 12;
  }
}

/* Gradient Texts & Accents */
.text-gradient {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.magic-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-1) var(--spacing-4);
  background: color-mix(in srgb, var(--primary) 15%, transparent);
  color: var(--primary);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: var(--spacing-4);
  text-transform: uppercase;
}

/* Components */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-pill);
  font-weight: 400;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  font-family: var(--font-mono);
  letter-spacing: 0em;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 14px 0 color-mix(in srgb, var(--primary) 40%, transparent);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px 0 color-mix(in srgb, var(--primary) 60%, transparent);
}

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

.btn-secondary:hover {
  background: color-mix(in srgb, var(--text) 10%, var(--surface-alt));
}

.btn-dark {
  background: var(--btn-dark-bg);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 14px 0 rgba(0, 0, 0, 0.15);
}

.btn-dark:hover {
  filter: brightness(1.2);
  transform: translateY(-2px);
  color: #ffffff;
  box-shadow: 0 6px 20px 0 rgba(0, 0, 0, 0.2);
}

/* Hero Section */
.hero {
  text-align: center;
  padding: var(--spacing-16) 0;
  max-width: 900px;
  margin: 0 auto;
}

.hero-subheadline {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-6);
  color: var(--text-muted);
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-8);
}

/* Theme Toggle */
.theme-toggle {
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  padding: var(--spacing-2);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: var(--transition);
}

.theme-toggle .icon-sun {
  display: none;
}
[data-theme="dark"] .theme-toggle .icon-moon {
  display: none;
}
[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

.theme-toggle:hover {
  background: var(--surface-alt);
}

/* Blog List */
.blog-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-6);
}

.article-card {
  padding: var(--spacing-8);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.2);
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.article-card h3 {
  color: var(--text);
  margin-bottom: var(--spacing-4);
  text-transform: none;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
  font-size: 1.5rem;
}

.article-card p {
  margin-bottom: 0;
}

.article-meta {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--primary);
  margin-bottom: var(--spacing-4);
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Article Content */
.article-content {
  max-width: 700px;
  margin: var(--spacing-12) auto;
}

.article-content > * {
  margin-bottom: var(--spacing-6);
}

.article-content ul {
  list-style-position: inside;
  padding-left: 0;
}

.article-content li {
  padding-left: 0.25em;
  margin-bottom: var(--spacing-2);
}

/* Footer */
footer {
  border-top: 1px solid var(--surface-alt);
  padding: var(--spacing-12) 0;
  margin-top: auto;
  text-align: center;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .main-header {
    width: calc(100% - 16px);
  }
  .main-header .container {
    padding: 0 12px;
    justify-content: center;
    gap: 16px;
  }
  .main-header .logo, .main-header a[aria-label="Google Play"] {
    display: none !important;
  }
  .nav-links {
    gap: 1rem;
    font-size: 0.8rem;
  }
  .bento-card h3 {
    font-size: 1.35rem;
    line-height: 1.2;
  }
  .hero-subheadline {
    font-size: clamp(1.75rem, 8vw, 2.5rem);
  }
}