/*
 * ============================================================================
 * AILO HANDBUCH - CSS DESIGN KONZEPT
 * ============================================================================
 * 
 * Basierend auf Logo-Analyse:
 * - Gradient: Blau/Lila → Rot/Orange (technisch, modern)
 * - Elemente: Schaltkreise, Zahnrad, Profil, Sprechblase
 * - Stil: Clean, futuristisch, KI-inspiriert
 * 
 * ============================================================================
 */

/* ============================================================================
   1. CSS VARIABLEN - FARBPALETTE
   ============================================================================ */

:root {
  /* Primäre Gradient-Farben (aus Logo extrahiert) */
  --color-primary-blue: #1a237e;
  --color-primary-purple: #4a148c;
  --color-primary-magenta: #880e4f;
  --color-primary-red: #c62828;
  --color-primary-orange: #e65100;
  
  /* Haupt-Gradient */
  --gradient-primary: linear-gradient(135deg, 
    var(--color-primary-blue) 0%, 
    var(--color-primary-purple) 25%, 
    var(--color-primary-magenta) 50%, 
    var(--color-primary-red) 75%, 
    var(--color-primary-orange) 100%
  );
  
  /* Subtiler Gradient für Hintergründe */
  --gradient-subtle: linear-gradient(135deg, 
    rgba(26, 35, 126, 0.1) 0%, 
    rgba(136, 14, 79, 0.05) 50%, 
    rgba(230, 81, 0, 0.1) 100%
  );
  
  /* Akzent-Gradient für Buttons/Links */
  --gradient-accent: linear-gradient(90deg, 
    var(--color-primary-purple) 0%, 
    var(--color-primary-red) 100%
  );
  
  /* Dark Mode Farben */
  --color-bg-dark: #0a0a0f;
  --color-bg-card: #12121a;
  --color-bg-elevated: #1a1a25;
  --color-border-dark: rgba(255, 255, 255, 0.08);
  
  /* Light Mode Farben */
  --color-bg-light: #fafafa;
  --color-bg-card-light: #ffffff;
  --color-border-light: rgba(0, 0, 0, 0.08);
  
  /* Text-Farben */
  --color-text-primary: #ffffff;
  --color-text-secondary: rgba(255, 255, 255, 0.7);
  --color-text-muted: rgba(255, 255, 255, 0.5);
  --color-text-dark: #1a1a2e;
  --color-text-dark-secondary: rgba(26, 26, 46, 0.7);
  
  /* Funktionale Farben */
  --color-success: #00c853;
  --color-warning: #ffab00;
  --color-error: #ff1744;
  --color-info: #00b0ff;
  
  /* Schaltkreis-Akzent (aus Logo) */
  --color-circuit: var(--color-primary-purple);
  --color-circuit-glow: rgba(74, 20, 140, 0.4);
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px var(--color-circuit-glow);
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, monospace;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 400ms ease;
}

/* ============================================================================
   2. BASE STYLES
   ============================================================================ */

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

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

body {
  font-family: var(--font-sans);
  background: var(--color-bg-dark);
  color: var(--color-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Schaltkreis-Hintergrundmuster */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 20% 50%, var(--color-circuit-glow) 0%, transparent 25%),
    radial-gradient(circle at 80% 20%, rgba(230, 81, 0, 0.15) 0%, transparent 25%),
    radial-gradient(circle at 40% 80%, rgba(136, 14, 79, 0.1) 0%, transparent 20%);
  pointer-events: none;
  z-index: -1;
}

/* ============================================================================
   3. TYPOGRAPHY
   ============================================================================ */

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: 2.5rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: 1.875rem;
  color: var(--color-text-primary);
  border-bottom: 2px solid transparent;
  border-image: var(--gradient-accent) 1;
  padding-bottom: var(--spacing-sm);
}

h3 {
  font-size: 1.5rem;
  color: var(--color-text-primary);
}

h4 {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
}

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

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

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

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-bg-elevated);
  padding: 0.2em 0.4em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-dark);
}

pre {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  overflow-x: auto;
  margin: var(--spacing-lg) 0;
}

pre code {
  background: transparent;
  border: none;
  padding: 0;
}

/* ============================================================================
   4. LAYOUT COMPONENTS
   ============================================================================ */

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Header mit Gradient-Border */
.header {
  background: var(--color-bg-card);
  border-bottom: 1px solid var(--color-border-dark);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
}

/* Sidebar Navigation */
.sidebar {
  background: var(--color-bg-card);
  border-right: 1px solid var(--color-border-dark);
  width: 280px;
  height: 100vh;
  position: fixed;
  overflow-y: auto;
  padding: var(--spacing-lg);
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  margin-bottom: var(--spacing-xs);
}

.sidebar-nav-item:hover {
  background: var(--color-bg-elevated);
  color: var(--color-text-primary);
  text-decoration: none;
}

.sidebar-nav-item.active {
  background: var(--gradient-accent);
  color: var(--color-text-primary);
}

/* Main Content */
.main-content {
  margin-left: 280px;
  padding: var(--spacing-2xl);
  min-height: 100vh;
}

/* ============================================================================
   5. CARDS & COMPONENTS
   ============================================================================ */

/* Feature Card */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  transition: all var(--transition-normal);
}

.card:hover {
  border-color: var(--color-primary-purple);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

/* Card mit Gradient-Border */
.card-gradient {
  position: relative;
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
}

.card-gradient::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-xl);
  padding: 1px;
  background: var(--gradient-primary);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
}

/* Info Box */
.info-box {
  background: rgba(0, 176, 255, 0.1);
  border-left: 4px solid var(--color-info);
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.warning-box {
  background: rgba(255, 171, 0, 0.1);
  border-left: 4px solid var(--color-warning);
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.tip-box {
  background: rgba(0, 200, 83, 0.1);
  border-left: 4px solid var(--color-success);
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

/* ============================================================================
   6. BUTTONS
   ============================================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-accent);
  color: var(--color-text-primary);
}

.btn-primary:hover {
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--color-border-dark);
  color: var(--color-text-secondary);
}

.btn-secondary:hover {
  border-color: var(--color-primary-purple);
  color: var(--color-text-primary);
}

/* ============================================================================
   7. SCHALTKREIS-DEKORATIONEN (KI-Thema)
   ============================================================================ */

/* Schaltkreis-Linien Dekoration */
.circuit-decoration {
  position: relative;
}

.circuit-decoration::before {
  content: '';
  position: absolute;
  width: 60px;
  height: 2px;
  background: var(--gradient-primary);
  left: -80px;
  top: 50%;
}

.circuit-decoration::after {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--color-primary-purple);
  border-radius: 50%;
  left: -88px;
  top: 50%;
  transform: translateY(-50%);
  box-shadow: 0 0 10px var(--color-circuit-glow);
}

/* Leuchtende Punkte (wie im Logo) */
.glow-dot {
  width: 10px;
  height: 10px;
  background: var(--color-primary-orange);
  border-radius: 50%;
  box-shadow: 0 0 15px var(--color-primary-orange);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.2); }
}

/* ============================================================================
   8. SCREENSHOT CONTAINER
   ============================================================================ */

.screenshot-container {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-xl);
  padding: var(--spacing-md);
  margin: var(--spacing-xl) 0;
  text-align: center;
}

.screenshot-container img {
  max-width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.screenshot-caption {
  margin-top: var(--spacing-md);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-style: italic;
}

/* iPhone Mockup Frame */
.iphone-frame {
  display: inline-block;
  background: linear-gradient(145deg, #2a2a35, #1a1a25);
  border-radius: 40px;
  padding: 12px;
  box-shadow: 
    0 25px 50px rgba(0, 0, 0, 0.5),
    inset 0 1px 1px rgba(255, 255, 255, 0.1);
}

.iphone-frame img {
  border-radius: 28px;
  display: block;
}

/* ============================================================================
   9. TABLE STYLES
   ============================================================================ */

table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
}

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

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

tr:hover td {
  background: rgba(74, 20, 140, 0.1);
}

/* ============================================================================
   10. FEATURE ICONS (passend zum Logo-Stil)
   ============================================================================ */

.feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-accent);
  border-radius: var(--radius-lg);
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
}

/* Grid für Feature-Übersicht */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
  margin: var(--spacing-2xl) 0;
}

/* ============================================================================
   11. STEP-BY-STEP ANLEITUNG
   ============================================================================ */

.steps {
  counter-reset: step-counter;
  list-style: none;
  padding: 0;
}

.step {
  position: relative;
  padding-left: 60px;
  padding-bottom: var(--spacing-xl);
  border-left: 2px solid var(--color-border-dark);
  margin-left: 20px;
}

.step::before {
  counter-increment: step-counter;
  content: counter(step-counter);
  position: absolute;
  left: -21px;
  width: 40px;
  height: 40px;
  background: var(--gradient-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
}

.step:last-child {
  border-left-color: transparent;
}

/* ============================================================================
   12. RESPONSIVE DESIGN
   ============================================================================ */

@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
  }
}

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
  
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .feature-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================================
   13. LIGHT MODE (optional)
   ============================================================================ */

@media (prefers-color-scheme: light) {
  .light-mode body {
    background: var(--color-bg-light);
    color: var(--color-text-dark);
  }
  
  .light-mode .card,
  .light-mode .sidebar,
  .light-mode .header {
    background: var(--color-bg-card-light);
    border-color: var(--color-border-light);
  }
  
  .light-mode p,
  .light-mode .sidebar-nav-item {
    color: var(--color-text-dark-secondary);
  }
}

/* ============================================================================
   14. PRINT STYLES
   ============================================================================ */

@media print {
  body::before { display: none; }
  .sidebar { display: none; }
  .main-content { margin-left: 0; }
  
  .card, .card-gradient {
    border: 1px solid #ccc;
    box-shadow: none;
  }
  
  h1 {
    -webkit-text-fill-color: var(--color-primary-purple);
    color: var(--color-primary-purple);
  }
}