/*
 * Application Styles - Zwischenzug Solutions
 * Premium B2B AI Automation Landing Page
 */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* CSS Custom Properties - Design System */
:root {
  /* Primary Colors - Sophisticated Navy/Slate */
  --color-primary-900: #0f172a;
  --color-primary-800: #1e293b;
  --color-primary-700: #334155;
  --color-primary-600: #475569;
  --color-primary-500: #64748b;
  
  /* Accent Colors - Electric Blue/Violet */
  --color-accent-500: #6366f1;
  --color-accent-400: #818cf8;
  --color-accent-300: #a5b4fc;
  --color-accent-600: #4f46e5;
  
  /* Success/CTA Colors */
  --color-success-500: #10b981;
  --color-success-400: #34d399;
  
  /* Neutral Colors */
  --color-white: #ffffff;
  --color-gray-50: #f8fafc;
  --color-gray-100: #f1f5f9;
  --color-gray-200: #e2e8f0;
  --color-gray-300: #cbd5e1;
  --color-gray-400: #94a3b8;
  --color-gray-500: #64748b;
  
  /* Gradients */
  --gradient-hero: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #312e81 100%);
  --gradient-accent: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
  --gradient-glow: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
  
  /* Shadows */
  --shadow-soft: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-medium: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-large: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Styles */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Animation Keyframes */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
  }
  50% {
    box-shadow: 0 0 40px rgba(99, 102, 241, 0.6);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes gradient-shift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

/* Utility Animation Classes */
.animate-fade-in-up {
  animation: fadeInUp 0.8s ease-out forwards;
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}

.animate-slide-in-left {
  animation: slideInLeft 0.8s ease-out forwards;
}

.animate-slide-in-right {
  animation: slideInRight 0.8s ease-out forwards;
}

.animate-pulse-glow {
  animation: pulse-glow 2s ease-in-out infinite;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

/* Stagger Animation Delays */
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }

/* Glassmorphism Effect */
.glass {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.glass-dark {
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

/* Gradient Text */
.gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Gradient Border */
.gradient-border {
  position: relative;
}

.gradient-border::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--gradient-accent);
  -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;
}

/* Hover Lift Effect */
.hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-large);
}

/* Button Styles */
.btn-primary {
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.btn-primary:hover::before {
  left: 100%;
}

/* Card Shine Effect */
.card-shine {
  position: relative;
  overflow: hidden;
}

.card-shine::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    to right,
    transparent 0%,
    rgba(255, 255, 255, 0.03) 50%,
    transparent 100%
  );
  transform: rotate(30deg);
  transition: all 0.6s;
}

.card-shine:hover::after {
  left: 100%;
}

/* Focus Styles */
*:focus-visible {
  outline: 2px solid var(--color-accent-400);
  outline-offset: 2px;
}

/* Selection Color */
::selection {
  background: rgba(99, 102, 241, 0.3);
  color: inherit;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-primary-900);
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary-600);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary-500);
}

/* Background Grid Pattern */
.bg-grid {
  background-image: 
    linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* Dot Pattern */
.bg-dots {
  background-image: radial-gradient(rgba(99, 102, 241, 0.1) 1px, transparent 1px);
  background-size: 20px 20px;
}

/* Noise Texture Overlay */
.noise-overlay::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.02;
  pointer-events: none;
}