/* MyPrivateMailbox - Privacy-Focused Dark Theme */

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #1a1a24;
  --text-primary: #e8e8ed;
  --text-secondary: #9999a8;
  --accent: #7c3aed;
  --accent-light: #a78bfa;
  --accent-glow: rgba(124, 58, 237, 0.3);
  --border: #2a2a36;
  --success: #10b981;
  --warning: #f59e0b;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 17px;
}

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

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

/* Header */
header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
}

.logo-icon {
  font-size: 1.5rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

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

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

/* Hero Section */
.hero {
  padding: 6rem 2rem;
  text-align: center;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  position: relative;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .tagline {
  font-size: 1.35rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  position: relative;
}

.cta-button {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 1rem 2.5rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.cta-button:hover {
  background: var(--accent-light);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 6px 30px var(--accent-glow);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Features Section */
.features {
  padding: 5rem 2rem;
}

.section-title {
  text-align: center;
  font-size: 2.25rem;
  margin-bottom: 3rem;
  font-weight: 700;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.3s;
}

.feature-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

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

/* Articles Section */
.articles {
  padding: 5rem 2rem;
  background: var(--bg-secondary);
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s;
}

.article-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.article-card-content {
  padding: 1.75rem;
}

.article-tag {
  display: inline-block;
  background: var(--accent-glow);
  color: var(--accent-light);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.article-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.article-card h3 a {
  color: var(--text-primary);
}

.article-card h3 a:hover {
  color: var(--accent-light);
}

.article-excerpt {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.read-more {
  font-weight: 600;
  font-size: 0.9rem;
}

/* Article Page */
.article-page {
  padding: 4rem 2rem;
}

.article-container {
  max-width: 800px;
  margin: 0 auto;
}

.article-header {
  margin-bottom: 3rem;
  text-align: center;
}

.article-header h1 {
  font-size: 2.5rem;
  line-height: 1.3;
  margin-bottom: 1rem;
}

.article-meta {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.article-content {
  font-size: 1.1rem;
}

.article-content h2 {
  font-size: 1.75rem;
  margin: 2.5rem 0 1rem;
  color: var(--text-primary);
}

.article-content h3 {
  font-size: 1.35rem;
  margin: 2rem 0 0.75rem;
  color: var(--text-primary);
}

.article-content p {
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
}

.article-content ul, .article-content ol {
  margin: 1.5rem 0;
  padding-left: 1.5rem;
}

.article-content li {
  margin-bottom: 0.75rem;
  color: var(--text-secondary);
}

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

.article-content blockquote {
  border-left: 4px solid var(--accent);
  padding-left: 1.5rem;
  margin: 2rem 0;
  font-style: italic;
  color: var(--text-secondary);
}

.article-content a {
  color: var(--accent-light);
  border-bottom: 1px solid transparent;
}

.article-content a:hover {
  border-bottom-color: var(--accent-light);
}

/* Tip Box */
.tip-box {
  background: var(--bg-card);
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 1.5rem;
  margin: 2rem 0;
}

.tip-box-title {
  color: var(--accent-light);
  font-weight: 700;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tip-box p {
  margin-bottom: 0;
}

/* Comparison Table */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  background: var(--bg-card);
  border-radius: 8px;
  overflow: hidden;
}

.comparison-table th,
.comparison-table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.comparison-table th {
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-weight: 600;
}

.comparison-table td {
  color: var(--text-secondary);
}

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

/* Footer */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 3rem 2rem;
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-secondary);
}

.copyright {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Blog Page */
.blog-hero {
  padding: 4rem 2rem;
  text-align: center;
  background: var(--bg-secondary);
}

.blog-hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.blog-hero p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.25rem;
  }
  
  .hero .tagline {
    font-size: 1.1rem;
  }
  
  .nav-links {
    display: none;
  }
  
  .features-grid, .articles-grid {
    grid-template-columns: 1fr;
  }
  
  .article-header h1 {
    font-size: 1.75rem;
  }
}