/* ===================================
   Pivotal Exchange Design System
   Beautiful, Modern, Converting
   =================================== */

/* Design Tokens */
:root {
  /* Premium Brand Colors - Enhanced */
  --brand-primary: #6366f1;
  --brand-primary-hover: #4f46e5;
  --brand-primary-light: #e0e7ff;
  --brand-secondary: #8b5cf6;
  --brand-secondary-hover: #7c3aed;
  --brand-accent: #14b8a6;
  --brand-accent-hover: #0d9488;
  --brand-accent-light: #ccfbf1;

  /* Neutral Palette - Refined */
  --neutral-50: #fafafa;
  --neutral-100: #f4f4f5;
  --neutral-200: #e4e4e7;
  --neutral-300: #d4d4d8;
  --neutral-400: #a1a1aa;
  --neutral-500: #71717a;
  --neutral-600: #52525b;
  --neutral-700: #3f3f46;
  --neutral-800: #27272a;
  --neutral-900: #18181b;

  /* Status Colors - Enhanced */
  --success: #10b981;
  --success-light: #d1fae5;
  --success-dark: #059669;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --warning-dark: #d97706;
  --error: #ef4444;
  --error-light: #fee2e2;
  --error-dark: #dc2626;
  --info: #06b6d4;
  --info-light: #cffafe;
  --info-dark: #0891b2;

  /* Typography Scale - Enhanced */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --text-7xl: 4.5rem;

  /* Font Weights */
  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;
  --font-black: 900;

  /* Spacing Scale */
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Border Radius - Enhanced */
  --radius-none: 0;
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.25rem;
  --radius-3xl: 1.5rem;
  --radius-4xl: 2rem;
  --radius-full: 9999px;

  /* Enhanced Shadow System */
  --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgb(0 0 0 / 0.05);
  
  /* Colored Shadows */
  --shadow-primary: 0 10px 30px -5px rgb(99 102 241 / 0.3);
  --shadow-secondary: 0 10px 30px -5px rgb(139 92 246 / 0.3);
  --shadow-accent: 0 10px 30px -5px rgb(20 184 166 / 0.3);

  /* Premium Gradients */
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --gradient-secondary: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
  --gradient-accent: linear-gradient(135deg, #14b8a6 0%, #06b6d4 100%);
  --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-warm: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
  --gradient-cool: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
  --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
  
  /* Mesh Gradients for backgrounds */
  --gradient-mesh-1: radial-gradient(at 40% 20%, hsla(228,100%,74%,0.15) 0px, transparent 50%),
                     radial-gradient(at 80% 0%, hsla(189,100%,56%,0.15) 0px, transparent 50%),
                     radial-gradient(at 0% 50%, hsla(355,100%,93%,0.15) 0px, transparent 50%);
  
  /* Glass Effects */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.18);
  --glass-dark-bg: rgba(0, 0, 0, 0.05);

  /* Animation */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Base Styles - Enhanced */
* {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: linear-gradient(to bottom, #ffffff 0%, var(--neutral-50) 100%);
  color: var(--neutral-800);
  line-height: 1.6;
  font-size: var(--text-base);
  padding-top: 80px;
  overflow-x: hidden;
}

/* Typography System - Enhanced */
.text-display {
  font-size: clamp(2.5rem, 8vw, var(--text-7xl));
  font-weight: var(--font-extrabold);
  line-height: 1.1;
  letter-spacing: -0.03em;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-heading-1 {
  font-size: clamp(2rem, 5vw, var(--text-5xl));
  font-weight: var(--font-bold);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--neutral-900);
}

.text-heading-2 {
  font-size: clamp(1.75rem, 4vw, var(--text-4xl));
  font-weight: var(--font-bold);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--neutral-800);
}

.text-heading-3 {
  font-size: var(--text-3xl);
  font-weight: var(--font-semibold);
  line-height: 1.3;
  color: var(--neutral-800);
}

.text-heading-4 {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  line-height: 1.4;
  color: var(--neutral-700);
}

.text-lead {
  font-size: var(--text-xl);
  font-weight: var(--font-normal);
  line-height: 1.75;
  color: var(--neutral-600);
}

.text-body {
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--neutral-600);
}

/* Button System - Premium Design */
.btn-premium {
  position: relative;
  padding: 0.875rem 2rem;
  font-weight: var(--font-semibold);
  font-size: var(--text-base);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  overflow: hidden;
  border: none;
}

.btn-premium::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.5s ease;
}

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

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

.btn-primary-premium:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 40px -10px rgb(99 102 241 / 0.4);
  color: white;
}

.btn-secondary-premium {
  background: white;
  color: var(--brand-primary);
  border: 2px solid var(--brand-primary);
  box-shadow: var(--shadow-md);
}

.btn-secondary-premium:hover {
  background: var(--brand-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--brand-primary-hover);
}

.btn-accent-premium {
  background: var(--gradient-accent);
  color: white;
  box-shadow: var(--shadow-accent);
}

.btn-accent-premium:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 40px -10px rgb(20 184 166 / 0.4);
  color: white;
}

/* Card System - Modern & Beautiful */
.card-premium {
  background: white;
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border: 1px solid var(--neutral-200);
  position: relative;
  overflow: hidden;
}

.card-premium::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

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

.card-premium:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2xl);
  border-color: var(--brand-primary-light);
}

.card-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-lg);
}

.card-gradient {
  background: var(--gradient-primary);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  color: white;
  box-shadow: var(--shadow-primary);
}

/* Event & Resource Cards - Enhanced */
.event-card-premium,
.resource-card-premium {
  background: white;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  height: 100%;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--neutral-200);
}

.event-card-premium:hover,
.resource-card-premium:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-2xl);
  border-color: var(--brand-primary-light);
}

.event-card-premium .card-image,
.resource-card-premium .card-image {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.event-card-premium .card-image img,
.resource-card-premium .card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.event-card-premium:hover .card-image img,
.resource-card-premium:hover .card-image img {
  transform: scale(1.1);
}

.event-card-premium .card-overlay,
.resource-card-premium .card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to bottom, transparent 0%, rgba(0,0,0,0.5) 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.event-card-premium:hover .card-overlay,
.resource-card-premium:hover .card-overlay {
  opacity: 1;
}

.event-card-premium .card-body,
.resource-card-premium .card-body {
  padding: var(--space-6);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.event-card-premium .card-title,
.resource-card-premium .card-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--neutral-900);
  margin-bottom: var(--space-3);
  line-height: 1.3;
}

/* Badge System - Modern */
.badge-premium {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.875rem;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  line-height: 1;
}

.badge-primary {
  background: var(--brand-primary-light);
  color: var(--brand-primary);
}

.badge-secondary {
  background: var(--neutral-100);
  color: var(--neutral-700);
}

.badge-success {
  background: var(--success-light);
  color: var(--success-dark);
}

.badge-accent {
  background: var(--brand-accent-light);
  color: var(--brand-accent-hover);
}

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

/* Form Elements - Premium */
.form-control-premium {
  width: 100%;
  padding: 0.875rem 1rem;
  font-size: var(--text-base);
  line-height: 1.5;
  color: var(--neutral-900);
  background-color: white;
  border: 2px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.form-control-premium:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px var(--brand-primary-light);
  background-color: white;
}

.form-label-premium {
  display: block;
  margin-bottom: 0.5rem;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--neutral-700);
}

/* Stats Section - Modern */
.stats-premium {
  background: white;
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
  text-align: center;
  transition: all var(--transition-base);
  border: 1px solid var(--neutral-200);
}

.stats-premium:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2xl);
}

.stats-premium .stats-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  color: white;
  font-size: 2rem;
}

.stats-premium .stats-number {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  color: var(--neutral-900);
  margin-bottom: var(--space-2);
}

.stats-premium .stats-label {
  font-size: var(--text-base);
  color: var(--neutral-600);
  font-weight: var(--font-medium);
}

/* Section Patterns - Beautiful */
.section-premium {
  padding: var(--space-20) 0;
  position: relative;
}

.section-premium-alt {
  background: var(--neutral-50);
  padding: var(--space-20) 0;
}

.section-premium-gradient {
  background: var(--gradient-primary);
  padding: var(--space-20) 0;
  color: white;
  position: relative;
  overflow: hidden;
}

.section-premium-gradient::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-mesh-1);
  opacity: 0.5;
}

/* Hero Section - Stunning */
.hero-premium {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  color: white;
  padding: var(--space-20) 0;
  overflow: hidden;
}

.hero-premium::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-mesh-1);
  opacity: 0.3;
}

.hero-premium::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100px;
  background: linear-gradient(to top, white, transparent);
}

/* Feature Icons - Modern */
.feature-icon-premium {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  color: white;
  font-size: 1.75rem;
  margin-bottom: var(--space-4);
  box-shadow: var(--shadow-primary);
}

/* CTA Sections - Conversion Optimized */
.cta-section-premium {
  background: var(--gradient-primary);
  border-radius: var(--radius-3xl);
  padding: var(--space-16);
  text-align: center;
  color: white;
  box-shadow: var(--shadow-2xl);
  position: relative;
  overflow: hidden;
}

.cta-section-premium::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="30" fill="white" opacity="0.05"/></svg>');
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

/* Testimonial Cards - Premium */
.testimonial-premium {
  background: white;
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
  position: relative;
  border: 1px solid var(--neutral-200);
}

.testimonial-premium::before {
  content: '"';
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  font-size: 4rem;
  color: var(--brand-primary-light);
  line-height: 1;
  font-family: Georgia, serif;
}

/* Navigation - Enhanced */
.nav-premium {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--neutral-200);
  box-shadow: var(--shadow-sm);
}

.nav-link-premium {
  color: var(--neutral-700);
  font-weight: var(--font-medium);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.nav-link-premium:hover {
  color: var(--brand-primary);
  background: var(--brand-primary-light);
}

/* Footer - Modern */
.footer-premium {
  background: var(--neutral-900);
  color: var(--neutral-300);
  padding: var(--space-20) 0 var(--space-8);
  position: relative;
}

.footer-premium::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brand-primary), transparent);
}

/* Responsive Design - Mobile First */
@media (max-width: 768px) {
  .text-display {
    font-size: var(--text-4xl);
  }
  
  .hero-premium {
    min-height: 400px;
    padding: var(--space-12) 0;
  }
  
  .section-premium,
  .section-premium-alt {
    padding: var(--space-12) 0;
  }
  
  .card-premium {
    padding: var(--space-4);
  }
  
  .btn-premium {
    width: 100%;
    justify-content: center;
  }
}

/* Utility Classes */
.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
}

.shadow-premium {
  box-shadow: var(--shadow-primary);
}

.shadow-soft {
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}