/* ZeroCrypted Design System - Ultra-Modern Dark Web3 / Cyber-Security Aesthetic */
:root {
  --bg-primary: #0A0D14;
  --bg-surface: #121826;
  --bg-surface-elevated: #182235;
  --bg-surface-hover: #1F2B44;
  --border: rgba(255, 255, 255, 0.08);
  --border-focus: #00F2FE;
  
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  
  --accent-cyan: #00F2FE;
  --accent-blue: #4FACFE;
  --accent-emerald: #10B981;
  --accent-amber: #F59E0B;
  --accent-purple: #8B5CF6;
  --accent-rose: #F43F5E;
  
  --gradient-cyan: linear-gradient(135deg, #00F2FE 0%, #4FACFE 100%);
  --gradient-emerald: linear-gradient(135deg, #10B981 0%, #059669 100%);
  --gradient-surface: linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0) 100%);
  
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 25px rgba(0, 242, 254, 0.15);
  
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Inter, Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Roboto Mono', Menlo, Consolas, monospace;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a:hover {
  color: #60E1FE;
  text-decoration: underline;
}

/* Header & Navigation */
.site-header {
  background-color: rgba(10, 13, 20, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-logo:hover {
  text-decoration: none;
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--gradient-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.3);
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #FFFFFF 30%, #94A3B8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-badge {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  background-color: rgba(0, 242, 254, 0.12);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 242, 254, 0.3);
  margin-left: 0.35rem;
  text-transform: uppercase;
}

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

.main-nav a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.main-nav a:hover, .main-nav a.active {
  color: var(--text-primary);
  background-color: var(--bg-surface-elevated);
  text-decoration: none;
}

.main-nav a.active {
  color: var(--accent-cyan);
  border-bottom: 2px solid var(--accent-cyan);
  border-radius: 4px 4px 0 0;
}

/* Container & Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
  flex: 1;
  width: 100%;
}

/* Hero Section */
.hero {
  position: relative;
  padding: 4.5rem 1.5rem 4rem;
  text-align: center;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  background: radial-gradient(circle at 50% 20%, rgba(0, 242, 254, 0.08) 0%, rgba(10, 13, 20, 1) 70%);
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-cyan);
  background-color: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.25);
  padding: 0.35rem 0.9rem;
  border-radius: 9999px;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.hero h1 span.gradient-text {
  background: var(--gradient-cyan);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto 2.25rem;
  line-height: 1.7;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.75rem 1.4rem;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--gradient-cyan);
  color: #070B12;
  box-shadow: 0 4px 15px rgba(0, 242, 254, 0.3);
}

.btn-primary:hover {
  color: #070B12;
  box-shadow: 0 6px 20px rgba(0, 242, 254, 0.5);
}

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

.btn-secondary:hover {
  background-color: var(--bg-surface-hover);
  border-color: rgba(255, 255, 255, 0.15);
  color: #FFFFFF;
}

/* Feature Grid & Cards */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.75rem;
  margin: 3rem 0;
}

.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.25s ease;
  position: relative;
  display: flex;
  flex-direction: column;
}

.card:hover {
  border-color: rgba(0, 242, 254, 0.4);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border);
}

.card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex: 1;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

.tag-list {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  background-color: var(--bg-surface-elevated);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

/* Authority Reclaim Banner */
.reclaim-banner {
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.08) 0%, rgba(79, 172, 254, 0.03) 100%);
  border: 1px solid rgba(0, 242, 254, 0.3);
  border-radius: 12px;
  padding: 2rem 2.25rem;
  margin: 3.5rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.reclaim-text h3 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.reclaim-text p {
  color: var(--text-secondary);
  max-width: 650px;
  font-size: 0.95rem;
}

/* Article / Content Formatting */
.article-header {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.breadcrumb {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

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

.article-content {
  max-width: 840px;
  margin: 0 auto;
}

.article-content h1 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  line-height: 1.25;
}

.article-content h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
}

.article-content h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin: 1.75rem 0 0.75rem;
  color: var(--text-primary);
}

.article-content p {
  color: #CBD5E1;
  font-size: 1.05rem;
  line-height: 1.75;
  margin-bottom: 1.5rem;
}

.article-content ul, .article-content ol {
  margin: 1rem 0 1.5rem 1.5rem;
  color: #CBD5E1;
}

.article-content li {
  margin-bottom: 0.5rem;
  line-height: 1.7;
}

.callout-box {
  background-color: var(--bg-surface-elevated);
  border-left: 4px solid var(--accent-cyan);
  padding: 1.25rem 1.5rem;
  border-radius: 0 8px 8px 0;
  margin: 2rem 0;
}

.callout-box p {
  margin-bottom: 0;
  font-size: 0.95rem;
  color: var(--text-primary);
}

/* Tool & Calculator Styles */
.tool-container {
  background-color: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2.25rem;
  margin: 2.5rem 0;
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  padding: 0.8rem 1rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: all 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(0, 242, 254, 0.15);
}

.result-card {
  background-color: var(--bg-surface-elevated);
  border: 1px solid rgba(0, 242, 254, 0.2);
  border-radius: 8px;
  padding: 1.5rem;
  margin-top: 1.5rem;
}

.result-value {
  font-size: 2.2rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  margin: 0.5rem 0;
}

/* Comparison Table */
.table-responsive {
  overflow-x: auto;
  margin: 2rem 0;
  border-radius: 8px;
  border: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

th {
  background-color: var(--bg-surface-elevated);
  color: var(--text-primary);
  padding: 1rem 1.25rem;
  font-weight: 600;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  color: #CBD5E1;
}

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

tr:hover td {
  background-color: rgba(255, 255, 255, 0.02);
}

/* Footer */
.site-footer {
  background-color: #070A0F;
  border-top: 1px solid var(--border);
  padding: 4rem 1.5rem 2rem;
  margin-top: auto;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.75rem;
}

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

.footer-col a:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

@media (max-width: 900px) {
  .footer-container {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .footer-container {
    grid-template-columns: 1fr;
  }
  .main-nav {
    display: none; /* Can add mobile toggle */
  }
}