/* CSS Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Color Palette - Dark Mode / Moody */
  --color-background: #121212;
  --color-surface: #1E1E1E;
  --color-surface-elevated: #2A2A2A;
  --color-text-primary: #E0E0E0;
  --color-text-secondary: #B0B0B0;
  --color-text-muted: #808080;
  --color-accent: #BB86FC;
  --color-accent-hover: #9D6FD8;
  --color-accent-bright: #03DAC6;
  --color-border: #2A2A2A;
  --color-shadow: rgba(0, 0, 0, 0.4);

  /* Typography */
  --font-family-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Inter", "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
  --font-family-mono: "SF Mono", "Roboto Mono", "Consolas", "Monaco", monospace;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  /* Layout */
  --container-max-width: 900px;
  --content-max-width: 800px;
  --border-radius: 8px;
  --border-radius-lg: 12px;
}

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

body {
  font-family: var(--font-family-primary);
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-text-primary);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  padding: var(--spacing-2xl) var(--spacing-md);
  text-align: center;
  box-shadow: 0 4px 20px var(--color-shadow);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 50%, rgba(187, 134, 252, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  color: var(--color-accent-bright);
  font-weight: 400;
  letter-spacing: 0.02em;
}

/* Container and Layout */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-md);
}

/* Article Content */
.content {
  background-color: var(--color-surface);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  box-shadow: 0 8px 32px var(--color-shadow);
  margin-bottom: var(--spacing-xl);
}

.article-intro {
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
}

h2 {
  font-size: 2rem;
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
}

h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

h3 {
  font-size: 1.5rem;
  margin-top: var(--spacing-lg);
  color: var(--color-accent-bright);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
}

section {
  margin-bottom: var(--spacing-xl);
}

section:last-child {
  margin-bottom: 0;
}

/* Lists */
ol, ul {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-xl);
}

ol li, ul li {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-secondary);
}

ol li strong, ul li strong {
  color: var(--color-text-primary);
}

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

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

/* Code Blocks */
code {
  font-family: var(--font-family-mono);
  font-size: 0.9em;
  background-color: var(--color-surface-elevated);
  padding: 0.2em 0.4em;
  border-radius: 4px;
  color: var(--color-accent-bright);
}

pre {
  background-color: var(--color-surface-elevated);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  overflow-x: auto;
  margin-bottom: var(--spacing-md);
  border: 1px solid var(--color-border);
}

pre code {
  background-color: transparent;
  padding: 0;
  color: var(--color-text-secondary);
}

/* Blockquotes */
blockquote {
  border-left: 4px solid var(--color-accent);
  padding-left: var(--spacing-md);
  margin: var(--spacing-lg) 0;
  font-style: italic;
  color: var(--color-text-muted);
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--spacing-md);
}

th, td {
  padding: var(--spacing-sm);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th {
  background-color: var(--color-surface-elevated);
  color: var(--color-text-primary);
  font-weight: 600;
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius);
}

/* Call to Action Section */
.cta {
  background: linear-gradient(135deg, #0f3460 0%, #16213e 50%, #1a1a2e 100%);
  padding: var(--spacing-2xl) var(--spacing-md);
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 70% 50%, rgba(3, 218, 198, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.cta-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.cta-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  background-color: var(--color-surface);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 12px 48px var(--color-shadow);
}

.cta-photo {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--color-accent-bright);
  box-shadow: 0 8px 24px rgba(3, 218, 198, 0.3);
  flex-shrink: 0;
}

.cta-text h2 {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
  color: var(--color-accent-bright);
  font-size: 2rem;
}

.cta-text p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
}

.cta-button {
  display: inline-block;
  background-color: var(--color-accent);
  color: var(--color-background);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: 1.125rem;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(187, 134, 252, 0.3);
  margin-top: var(--spacing-md);
}

.cta-button:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(187, 134, 252, 0.5);
  text-decoration: none;
}

/* Footer */
.footer {
  background-color: var(--color-background);
  padding: var(--spacing-lg) var(--spacing-md);
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.footer-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.footer p {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-bottom: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
  }

  body {
    font-size: 1rem;
  }

  .content {
    padding: var(--spacing-lg);
  }

  .cta-content {
    flex-direction: column;
    text-align: center;
  }

  .cta-photo {
    width: 150px;
    height: 150px;
  }

  h2 {
    font-size: 1.75rem;
  }

  h3 {
    font-size: 1.25rem;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: var(--spacing-xl) var(--spacing-md);
  }

  .content {
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
  }

  .cta {
    padding: var(--spacing-xl) var(--spacing-md);
  }

  .cta-content {
    padding: var(--spacing-lg);
  }

  .cta-photo {
    width: 120px;
    height: 120px;
  }

  .cta-button {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
  }
}

/* Print Styles */
@media print {
  body {
    background-color: white;
    color: black;
  }

  .hero {
    background: none;
    box-shadow: none;
  }

  .content {
    background-color: white;
    box-shadow: none;
  }

  .cta {
    background: none;
    page-break-before: always;
  }

  .cta-button {
    background-color: black;
    color: white;
  }

  a {
    color: black;
    text-decoration: underline;
  }

  .footer {
    border-top: 1px solid black;
  }
}