/* ============================================
   ETF888 Info-Hub – Kompaktes Reddit-Style CSS
   ============================================ */

:root {
  --color-bg: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #6b7280;
  --color-primary: #3b82f6;
  --color-primary-hover: #2563eb;
  --color-secondary: #8b5cf6;
  --color-accent: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-border: #e5e7eb;
  --color-bg-light: #f9fafb;
  
  --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  --font-size-base: 16px;
  --font-size-small: 0.875rem;
  --line-height: 1.6;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  
  --max-width: 1100px;
  --border-radius: 8px;
  --border-radius-sm: 6px;
  
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
  
  --nav-width: 200px;
}

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  line-height: var(--line-height);
  color: var(--color-text);
  background-color: var(--color-bg-light);
  -webkit-font-smoothing: antialiased;
}

/* Side Navigation */
.side-nav {
  position: fixed;
  left: 0;
  top: 0;
  width: var(--nav-width);
  height: 100vh;
  background: white;
  border-right: 2px solid var(--color-border);
  padding: var(--spacing-lg) 0;
  z-index: 100;
  overflow-y: auto;
}

.side-nav-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  padding: 0 var(--spacing-md);
}

.side-nav-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-sm);
  border-bottom: 2px solid var(--color-border);
}

.side-nav-brand:hover {
  text-decoration: none;
}

.side-nav-link {
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: var(--border-radius-sm);
  transition: all 0.2s ease;
  font-weight: 500;
}

.side-nav-link:hover {
  background: var(--color-bg-light);
  color: var(--color-primary);
  text-decoration: none;
}

.side-nav-link.active {
  background: var(--color-primary);
  color: white;
}

/* Typography */
h1, h2, h3, h4 {
  line-height: 1.3;
  font-weight: 700;
  color: var(--color-text);
}

h1 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
  margin-right: 5vw;
}

h2 {
  font-size: 1.5rem;
  margin: 0 0 var(--spacing-md) 0;
  padding-bottom: var(--spacing-xs);
  border-bottom: 3px solid var(--color-primary);
  display: inline-block;
}

h3 {
  font-size: 1.2rem;
  margin: var(--spacing-md) 0 var(--spacing-sm) 0;
}

p {
  margin-bottom: var(--spacing-sm);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: all 0.2s ease;
  font-weight: 500;
}

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

strong {
  font-weight: 600;
}

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

/* Hero */
.hero {
  background: var(--gradient-hero);
  color: white;
  padding: var(--spacing-xl) 0;
  text-align: center;
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--spacing-xl);
  margin-left: var(--nav-width);
}

.hero h1 {
  color: white;
  font-size: 2.5rem;
  margin-bottom: var(--spacing-xs);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-xs);
  opacity: 0.95;
}

.hero-description {
  font-size: 1rem;
  max-width: 700px;
  margin: 0 auto;
  opacity: 0.9;
}

#nickname-rotator {
  display: inline-block;
  min-width: 150px;
  text-align: left;
  transition: opacity 0.3s ease;
}

/* Main */
.main-content {
  margin-left: var(--nav-width);
  padding-bottom: var(--spacing-xl);
}

/* Sections */
.section {
  background: white;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-lg);
}

.section.compact {
  padding: var(--spacing-md);
}

/* Collapsible Section Header */
.section-header-collapsible {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.section-header-collapsible h2 {
  margin: 0;
  border: none;
}

.collapse-toggle {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  font-size: 1.2rem;
  color: var(--color-primary);
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.collapse-toggle:hover {
  color: var(--color-primary-hover);
  transform: scale(1.1);
}

.collapse-toggle .chevron {
  transition: transform 0.3s ease;
  display: inline-block;
}

/* Collapsible Content */
.collapsible-content {
  max-height: 2000px;
  overflow: hidden;
  transition: max-height 0.4s ease, opacity 0.3s ease;
  opacity: 1;
}

.collapsible-content.collapsed {
  max-height: 0;
  opacity: 0;
}

/* Two Column Grid */
.two-col-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

/* Quick Facts Compact */
.facts-compact {
  margin-bottom: var(--spacing-md);
}

.fact-row {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-xs) 0;
  border-bottom: 1px solid var(--color-border);
}

.fact-row:last-child {
  border-bottom: none;
}

.fact-row .label {
  color: var(--color-text-muted);
  font-size: var(--font-size-small);
}

.fact-row strong {
  color: var(--color-primary);
  text-align: right;
}

/* Resource Compact Grid */
.resource-compact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.resource-compact-card {
  background: white;
  padding: var(--spacing-md);
  border-radius: var(--border-radius-sm);
  border: 2px solid var(--color-border);
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-decoration: none;
  color: var(--color-text);
}

.resource-compact-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
  text-decoration: none;
}

.resource-compact-card strong {
  color: var(--color-primary);
  font-size: 0.95rem;
}

.resource-compact-card .arrow {
  color: var(--color-primary);
  font-size: 1.2rem;
  font-weight: bold;
}

/* Analysis Block */
.analysis-block {
  background: var(--color-bg-light);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  margin: var(--spacing-lg) 0;
  border-left: 4px solid var(--color-secondary);
}

.analysis-block:first-child {
  margin-top: var(--spacing-md);
}

.analysis-block h3 {
  margin-top: 0;
  color: var(--color-secondary);
}

/* Reddit Embeds */
.reddit-embed-bq {
  margin: var(--spacing-md) 0 !important;
  border-radius: var(--border-radius) !important;
  box-shadow: var(--shadow-sm) !important;
}

/* Community Compact Cards */
.community-compact-card {
  display: block;
  background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  border: 2px solid var(--color-border);
  transition: all 0.2s ease;
  text-decoration: none;
  color: var(--color-text);
}

.community-compact-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
  text-decoration: none;
}

.community-compact-card strong {
  display: block;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
  font-size: 1.1rem;
}

.community-compact-card p {
  margin: 0;
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
}

/* Video Compact */
.video-compact {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-md);
  margin: var(--spacing-md) 0;
  padding: var(--spacing-md);
  background: var(--color-bg-light);
  border-radius: var(--border-radius);
}

.video-info h3 {
  margin-top: 0;
  font-size: 1.1rem;
}

.video-info p {
  font-size: var(--font-size-small);
  margin-bottom: var(--spacing-sm);
}

.video-embed-small {
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.video-embed-small iframe {
  width: 100%;
  height: 180px;
  border: 0;
}

/* Buttons */
.btn-secondary {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: white;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  border-radius: var(--border-radius-sm);
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  font-size: 0.9rem;
}

.btn-secondary:hover {
  background: var(--color-primary);
  color: white;
  text-decoration: none;
}

.btn-small {
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
}

/* Small Note */
.small-note {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  font-style: italic;
  margin-top: var(--spacing-sm);
}

/* Footer */
.footer {
  background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
  color: white;
  padding: var(--spacing-lg) 0;
  margin-top: var(--spacing-xl);
  margin-left: var(--nav-width);
}

.disclaimer-compact {
  background: rgba(239, 68, 68, 0.15);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  border: 2px solid rgba(239, 68, 68, 0.5);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-small);
}

.disclaimer-compact strong {
  color: #fca5a5;
}

.footer-text {
  text-align: center;
  opacity: 0.8;
  font-size: var(--font-size-small);
  margin: 0;
}

/* Responsive */
@media (max-width: 768px) {
  :root {
    --nav-width: 0px;
  }
  
  .side-nav {
    transform: translateX(-100%);
  }
  
  .hero,
  .main-content,
  .footer {
    margin-left: 0;
  }
  
  .hero h1 {
    font-size: 1.8rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .two-col-grid {
    grid-template-columns: 1fr;
  }
  
  .resource-compact-grid {
    grid-template-columns: 1fr;
  }
  
  .video-compact {
    grid-template-columns: 1fr;
  }
  
  .video-embed-small iframe {
    height: 200px;
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-base: 15px;
  }
  
  .hero {
    padding: var(--spacing-lg) 0;
  }
  
  .section {
    padding: var(--spacing-sm);
  }
  
  .fact-row {
    flex-direction: column;
    gap: 0.25rem;
  }
  
  .fact-row strong {
    text-align: left;
  }
}

/* Print */
@media print {
  .side-nav {
    display: none;
  }
  
  .hero,
  .main-content,
  .footer {
    margin-left: 0;
  }
  
  .hero,
  .footer {
    background: white !important;
    color: black !important;
  }
}