/**
 * Tailwind-Inspired Modern Design System
 * Bootstrap 5 Compatible - Advanced UI Components
 */

/* ============================================
   1. Design Tokens (Tailwind hissinin temeli)
   ============================================ */
:root {
  /* Primary Colors - Kurex.pro Brand */
  --primary-500: #00c2cb;
  --primary-600: #03989e;
  --primary-700: #028a8f;
  --primary-50: #e0f7fa;
  --primary-100: #b2ebf2;

  /* Gray Scale */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* 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);
  --shadow-soft: 0 10px 25px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 15px 35px rgba(0, 0, 0, 0.12);
  --shadow-primary: 0 10px 25px rgba(3, 152, 158, 0.2);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.3s ease;
}

/* ============================================
   2. Advanced Button (Tailwind-like)
   ============================================ */
.btn-advanced {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  color: #fff;
  background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
  box-shadow: var(--shadow-soft);
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-advanced:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  background: linear-gradient(135deg, var(--primary-700), var(--primary-600));
  color: #fff;
}

.btn-advanced:active {
  transform: scale(0.98);
}

.btn-advanced-lg {
  padding: 1rem 2rem;
  font-size: 1.1rem;
}

/* ============================================
   3. Glass / Soft Card (Modern Dashboard Card)
   ============================================ */
.card-soft {
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 0, 0, 0.05);
  box-shadow: var(--shadow-soft);
  transition: all var(--transition-slow);
  overflow: hidden;
}

.card-soft:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(3, 152, 158, 0.1);
}

.card-soft-gradient {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(240, 253, 254, 0.95));
}

/* ============================================
   4. Advanced Input (Tailwind Form Feel)
   ============================================ */
.form-control-advanced {
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-300);
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  transition: all var(--transition-base);
  background: #fff;
}

.form-control-advanced:focus {
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(0, 194, 203, 0.1);
  outline: none;
}

.form-control-advanced::placeholder {
  color: var(--gray-400);
}

/* ============================================
   5. Badge / Chip (Tailwind Badge Style)
   ============================================ */
.badge-soft {
  background-color: rgba(0, 194, 203, 0.1);
  color: var(--primary-600);
  padding: 0.4rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.badge-soft-success {
  background-color: rgba(34, 197, 94, 0.1);
  color: #22c55e;
}

.badge-soft-warning {
  background-color: rgba(251, 191, 36, 0.1);
  color: #fbbf24;
}

/* ============================================
   6. Divider (Clean Section Separator)
   ============================================ */
.divider {
  height: 1px;
  background: linear-gradient(to right, transparent, var(--gray-300), transparent);
  margin: 2rem 0;
  border: none;
}

.divider-primary {
  background: linear-gradient(to right, transparent, var(--primary-300), transparent);
}

/* ============================================
   7. Hoverable List Item
   ============================================ */
.list-hover-item {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  transition: background var(--transition-base);
  cursor: pointer;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
}

.list-hover-item:hover {
  background-color: var(--gray-100);
}

/* ============================================
   8. Modern Section Spacing
   ============================================ */
.section-spacing {
  padding: var(--spacing-3xl) 0;
}

.section-spacing-sm {
  padding: var(--spacing-2xl) 0;
}

/* ============================================
   9. Modern Container
   ============================================ */
.container-modern {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* ============================================
   10. Advanced Typography
   ============================================ */
.text-gradient {
  background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.heading-modern {
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

/* ============================================
   11. Mobile Responsive Improvements
   ============================================ */
@media (max-width: 768px) {
  .section-spacing {
    padding: var(--spacing-2xl) 0;
  }

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

  .btn-advanced {
    padding: 0.65rem 1.25rem;
    font-size: 0.9rem;
  }

  .btn-advanced-lg {
    padding: 0.85rem 1.5rem;
    font-size: 1rem;
  }

  .card-soft {
    border-radius: var(--radius-md);
  }

  .container-modern {
    padding: 0 var(--spacing-md);
  }

  .heading-modern {
    font-size: 1.75rem !important;
  }
}

@media (max-width: 576px) {
  .section-spacing {
    padding: var(--spacing-xl) 0;
  }

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

  .btn-advanced {
    width: 100%;
    justify-content: center;
  }

  .hero-modern {
    padding: 3rem 0 !important;
  }

  .stat-card {
    padding: var(--spacing-lg) !important;
  }

  .stat-number {
    font-size: 2rem !important;
  }

  .feature-card-modern {
    padding: var(--spacing-lg) !important;
  }

  .testimonial-card-modern {
    padding: var(--spacing-lg) !important;
  }

  .step-indicator {
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
  }

  .card-soft {
    padding: var(--spacing-lg) !important;
  }

  .trust-badge {
    font-size: 0.75rem;
    padding: 0.35rem 0.75rem;
  }
}

/* ============================================
   12. Smooth Animations
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

/* ============================================
   13. Trust Indicators
   ============================================ */
.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(34, 197, 94, 0.1);
  border-radius: var(--radius-full);
  color: #22c55e;
  font-size: 0.875rem;
  font-weight: 600;
}

/* ============================================
   14. Content Flow Improvements
   ============================================ */
.content-flow {
  max-width: 65ch;
  margin: 0 auto;
}

.content-flow-wide {
  max-width: 75ch;
  margin: 0 auto;
}

/* ============================================
   15. Hero Section Modern
   ============================================ */
.hero-modern {
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-modern::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #ffffff;
  z-index: -1;
}

/* Hero section with white background override */
section.hero-modern[style*="background: #ffffff"]::before {
  background: #ffffff;
}

/* ============================================
   16. Stats Card Modern
   ============================================ */
.stat-card {
  text-align: center;
  padding: var(--spacing-xl);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.15);
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #fff, rgba(255, 255, 255, 0.8));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================
   17. Feature Card Enhanced
   ============================================ */
.feature-card-modern {
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--gray-200);
  transition: all var(--transition-slow);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.feature-card-modern:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-500);
}

.feature-icon-modern {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--primary-50), var(--primary-100));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  font-size: 2rem;
  color: var(--primary-600);
}

/* ============================================
   18. Testimonial Card Modern
   ============================================ */
.testimonial-card-modern {
  padding: var(--spacing-xl);
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--gray-200);
  transition: all var(--transition-base);
  height: 100%;
}

.testimonial-card-modern:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

/* ============================================
   19. Step Indicator
   ============================================ */
.step-indicator {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 2rem;
  font-weight: 800;
  box-shadow: var(--shadow-primary);
  margin: 0 auto var(--spacing-lg);
}

@media (max-width: 768px) {
  .step-indicator {
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
  }
}

/* ============================================
   20. Mobile Navigation Improvements
   ============================================ */
@media (max-width: 991px) {
  .navbar-collapse {
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
  }

  .nav-link {
    padding: var(--spacing-sm) var(--spacing-md) !important;
    border-radius: var(--radius-md);
    margin-bottom: 0.25rem;
  }

  .nav-link:hover {
    background: var(--gray-100);
  }
}