/* 🎨 OPTIMIERTE WEBSITE STYLES - Menschlichkeit Österreich */
/* Erweiterte Performance & UX Verbesserungen */

/* ===== PERFORMANCE OPTIMIERUNGEN ===== */
/* Font Display Optimization */
@font-face {
  font-family: 'Inter';
  src: url('assets/fonts/Inter-roman.var.woff2') format('woff2-variations');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap; /* Verbessert FOUT */
}

@font-face {
  font-family: 'Inter';
  src: url('assets/fonts/Inter-italic.var.woff2') format('woff2-variations');
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}

/* ===== CRITICAL CSS IMPROVEMENTS ===== */
:root {
  /* Design System Colors */
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --secondary: #64748b;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --light: #f8fafc;
  --dark: #1e293b;

  /* Spacing System */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;

  /* Animation Timing */
  --transition-fast: 0.15s;
  --transition-normal: 0.3s;
  --transition-slow: 0.5s;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* ===== BASE OPTIMIZATIONS ===== */
html {
  scroll-behavior: smooth;
  font-size: 16px; /* Accessibility baseline */
}

body {
  font-family:
    'Inter',
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    Roboto,
    sans-serif;
  line-height: 1.7;
  color: var(--dark);
  padding-top: 76px;
  font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11'; /* Inter optimizations */
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== IMPROVED NAVBAR ===== */
.navbar {
  transition: all var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
  background: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  box-shadow: var(--shadow-sm);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98) !important;
  box-shadow: var(--shadow-md);
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary) !important;
  transition: transform var(--transition-fast) ease;
}

.navbar-brand:hover {
  transform: scale(1.02);
}

.nav-link {
  font-weight: 500;
  color: var(--secondary) !important;
  transition: all var(--transition-fast) ease;
  position: relative;
  padding: 0.75rem 1rem !important;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: all var(--transition-normal) ease;
  transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 80%;
}

.nav-link:hover {
  color: var(--primary) !important;
  transform: translateY(-1px);
}

/* ===== ENHANCED HERO SECTION ===== */
.hero-section {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="0.5" fill="white" opacity="0.1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grain)"/></svg>');
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
}

/* ===== IMPROVED BUTTONS ===== */
.btn {
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transition: all var(--transition-slow) ease;
  transform: translate(-50%, -50%);
  z-index: 0;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-light);
}

.btn-outline-primary {
  border-color: rgba(255, 255, 255, 0.8);
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
}

.btn-outline-primary:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: #fff;
  transform: translateY(-2px);
}

.btn-lg {
  padding: 0.875rem 2rem;
  font-size: 1.1rem;
  min-height: 44px; /* Touch-friendly */
}

/* ===== ENHANCED CARDS ===== */
.card {
  border: none;
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  position: relative;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  transform: scaleX(0);
  transition: transform var(--transition-normal) ease;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.card:hover::before {
  transform: scaleX(1);
}

.card-body {
  padding: 2rem;
}

/* ===== ICON IMPROVEMENTS ===== */
.icon-large {
  font-size: 3rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: transform var(--transition-normal) ease;
}

.card:hover .icon-large {
  transform: scale(1.1) rotate(5deg);
}

.icon-contact {
  font-size: 2rem;
  color: var(--primary);
}

/* ===== RESPONSIVE OPTIMIZATIONS ===== */
@media (max-width: 991.98px) {
  .navbar-nav {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-top: var(--spacing-sm);
    box-shadow: var(--shadow-lg);
  }

  .nav-link {
    padding: var(--spacing-sm) 0 !important;
    margin: var(--spacing-xs) 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  }

  .nav-link:last-child {
    border-bottom: none;
  }
}

@media (max-width: 767.98px) {
  .hero-section h1 {
    font-size: 2.5rem;
    line-height: 1.2;
  }

  .hero-section .lead {
    font-size: 1.3rem;
  }

  .btn-lg {
    width: 100%;
    margin-bottom: var(--spacing-sm);
  }

  .card-body {
    padding: var(--spacing-lg);
  }

  /* Touch-friendly improvements */
  .nav-link {
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .btn {
    min-height: 44px;
    min-width: 44px;
  }
}

/* ===== ACCESSIBILITY IMPROVEMENTS ===== */
.skip-navigation {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary);
  color: #fff;
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  z-index: 1000;
  transition: top var(--transition-normal) ease;
  font-weight: 600;
}

.skip-navigation:focus {
  top: 0;
  color: #fff;
}

/* Focus styles */
.btn:focus,
.nav-link:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* ===== LOADING STATES ===== */
.btn.loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn.loading::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  top: 50%;
  left: 50%;
  margin: -10px 0 0 -10px;
  border: 2px solid currentColor;
  border-radius: 50%;
  border-top-color: transparent;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* ===== SECTION IMPROVEMENTS ===== */
section {
  scroll-margin-top: 80px; /* Account for fixed navbar */
}

.section-padding {
  padding: var(--spacing-xxl) 0;
}

.bg-light {
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%) !important;
}

/* ===== UTILITY CLASSES ===== */
.text-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.shadow-custom {
  box-shadow: var(--shadow-lg);
}

.hover-lift {
  transition: transform var(--transition-normal) ease;
}

.hover-lift:hover {
  transform: translateY(-4px);
}

/* ===== DARK MODE SUPPORT ===== */
@media (prefers-color-scheme: dark) {
  :root {
    --dark: #f8fafc;
    --light: #1e293b;
  }

  body {
    background-color: #0f172a;
    color: #f8fafc;
  }

  .navbar {
    background: rgba(15, 23, 42, 0.95) !important;
    border-bottom-color: rgba(255, 255, 255, 0.1);
  }

  .card {
    background-color: #1e293b;
    color: #f8fafc;
  }

  .bg-light {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%) !important;
  }
}

/* ===== PRINT STYLES ===== */
@media print {
  .navbar,
  .btn,
  .skip-navigation {
    display: none !important;
  }

  body {
    padding-top: 0;
    color: #000 !important;
    background: #fff !important;
  }

  .hero-section {
    background: #fff !important;
    color: #000 !important;
    padding: 2rem 0;
    min-height: auto;
  }
}

/* ===== PERFORMANCE: Reduce Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}