:root {
  /* Color Palette - Vibrant and romantic */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --accent-gradient: linear-gradient(135deg, #ffd89b 0%, #19547b 100%);
  --humor-gradient: linear-gradient(135deg, #ffeaa7 0%, #fdcb6e 100%);
  
  --bg-dark: #0f0f1e;
  --bg-card: rgba(255, 255, 255, 0.05);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  
  --text-primary: #ffffff;
  --text-secondary: #b8b8d1;
  --text-muted: #6b6b8c;
  
  --border-color: rgba(255, 255, 255, 0.1);
  --shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
  --shadow-lg: 0 20px 60px 0 rgba(31, 38, 135, 0.5);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  
  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Animated background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(245, 87, 108, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 20%, rgba(255, 216, 155, 0.05) 0%, transparent 50%);
  z-index: -1;
  animation: backgroundShift 20s ease infinite;
}

@keyframes backgroundShift {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }

/* Glassmorphism Card */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow);
  transition: all var(--transition-normal);
}

.glass-card:hover {
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* Buttons */
.btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-full);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  display: inline-block;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.2);
  transition: left var(--transition-normal);
}

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

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
  background: var(--secondary-gradient);
  color: white;
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(245, 87, 108, 0.4);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--border-color);
  color: var(--text-primary);
}

.btn-outline:hover {
  background: var(--bg-card);
  border-color: var(--text-secondary);
}

.btn-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  padding: 0;
}

/* Input Fields */
.input-group {
  margin-bottom: var(--spacing-md);
}

.input-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
}

.input-group input,
.input-group textarea,
.input-group select {
  width: 100%;
  padding: var(--spacing-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 1rem;
  font-family: inherit;
  transition: all var(--transition-fast);
}

.input-group input:focus,
.input-group textarea:focus,
.input-group select:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.input-group textarea {
  resize: vertical;
  min-height: 100px;
}

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

.container-sm {
  max-width: 600px;
  margin: 0 auto;
  padding: var(--spacing-lg);
}

/* Header */
.header {
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: var(--spacing-xl);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo::before {
  content: '😂 ';
}

/* Navigation */
.nav {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.nav a:hover {
  color: var(--text-primary);
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Profile Card */
.profile-card {
  position: relative;
  overflow: hidden;
}

.profile-image {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

.profile-info {
  padding: var(--spacing-md);
}

.profile-name {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.profile-details {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

/* Compatibility Badge */
.compatibility {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--humor-gradient);
  border-radius: var(--radius-full);
  font-weight: 600;
  color: #000;
  font-size: 0.9rem;
}

.compatibility-high {
  background: linear-gradient(135deg, #a8ff78 0%, #78ffd6 100%);
}

.compatibility-medium {
  background: var(--humor-gradient);
}

.compatibility-low {
  background: linear-gradient(135deg, #ffa8a8 0%, #ff78d6 100%);
}

/* Tags */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
}

.tag {
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.tag:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  transform: scale(1.05);
}

.tag-humor {
  border-color: #ffeaa7;
  color: #ffeaa7;
}

.tag-music {
  border-color: #a29bfe;
  color: #a29bfe;
}

/* Loading Spinner */
.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--border-color);
  border-top-color: #667eea;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: var(--spacing-xl) auto;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Alert Messages */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  border-left: 4px solid;
}

.alert-success {
  background: rgba(168, 255, 120, 0.1);
  border-color: #a8ff78;
  color: #a8ff78;
}

.alert-error {
  background: rgba(255, 120, 168, 0.1);
  border-color: #ff78a8;
  color: #ff78a8;
}

.alert-info {
  background: rgba(102, 126, 234, 0.1);
  border-color: #667eea;
  color: #667eea;
}

/* Checkbox/Radio Custom */
.checkbox-group,
.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.checkbox-item,
.radio-item {
  position: relative;
}

.checkbox-item input,
.radio-item input {
  position: absolute;
  opacity: 0;
}

.checkbox-item label,
.radio-item label {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-block;
}

.checkbox-item input:checked + label,
.radio-item input:checked + label {
  background: var(--primary-gradient);
  border-color: transparent;
  color: white;
  transform: scale(1.05);
}

/* Range Slider */
.range-slider {
  width: 100%;
  margin: var(--spacing-md) 0;
}

.range-slider input[type="range"] {
  width: 100%;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  outline: none;
  -webkit-appearance: none;
}

.range-slider input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary-gradient);
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(102, 126, 234, 0.5);
}

.range-slider input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary-gradient);
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(102, 126, 234, 0.5);
  border: none;
}

/* Responsive */
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.8rem; }
  h3 { font-size: 1.5rem; }
  
  .container {
    padding: var(--spacing-sm);
  }
  
  .header-content {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .nav {
    flex-direction: column;
    width: 100%;
  }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.hidden { display: none; }
.flex { display: flex; }
.flex-center { display: flex; justify-content: center; align-items: center; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }