/* Tailwind CSS Replacement - Custom utility classes for index_new.html */
/* This file replaces Tailwind CDN with local CSS */

/* Reset and Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
}

/* Background Colors */
.bg-white { background-color: #ffffff; }
.bg-gray-50 { background-color: #f9fafb; }
.bg-gray-900 { background-color: #111827; }
.bg-blue-50 { background-color: #eff6ff; }
.bg-blue-100 { background-color: #dbeafe; }
.bg-blue-600 { background-color: #2563eb; }
.bg-blue-700 { background-color: #1d4ed8; }
.bg-white\/95 { background-color: rgba(255, 255, 255, 0.95); }

/* Text Colors */
.text-white { color: #ffffff; }
.text-gray-400 { color: #9ca3af; }
.text-gray-600 { color: #4b5563; }
.text-gray-700 { color: #374151; }
.text-gray-900 { color: #111827; }
.text-blue-200 { color: #bfdbfe; }
.text-blue-600 { color: #2563eb; }
.text-white\/90 { color: rgba(255, 255, 255, 0.9); }

/* Hover Text Colors */
.hover\:text-white:hover { color: #ffffff; }
.hover\:text-blue-600:hover { color: #2563eb; }

/* Hover Background Colors */
.hover\:bg-blue-50:hover { background-color: #eff6ff; }
.hover\:bg-blue-700:hover { background-color: #1d4ed8; }
.hover\:bg-blue-800:hover { background-color: #1e40af; }

/* Padding */
.p-8 { padding: 2rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.px-8 { padding-left: 2rem; padding-right: 2rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.py-12 { padding-top: 3rem; padding-bottom: 3rem; }
.py-16 { padding-top: 4rem; padding-bottom: 4rem; }
.py-20 { padding-top: 5rem; padding-bottom: 5rem; }
.pt-8 { padding-top: 2rem; }
.pt-24 { padding-top: 6rem; }
.pb-16 { padding-bottom: 4rem; }

/* Margin */
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-16 { margin-bottom: 4rem; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* Width & Height */
.w-6 { width: 1.5rem; }
.w-12 { width: 3rem; }
.w-full { width: 100%; }
.w-auto { width: auto; }
.h-6 { height: 1.5rem; }
.h-8 { height: 2rem; }
.h-10 { height: 2.5rem; }
.h-12 { height: 3rem; }
.h-16 { height: 4rem; }

/* Max Width */
.max-w-3xl { max-width: 48rem; }
.max-w-4xl { max-width: 56rem; }
.max-w-7xl { max-width: 80rem; }

/* Display */
.block { display: block; }
.hidden { display: none; }
.flex { display: flex; }
.grid { display: grid; }

/* Flex */
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-shrink-0 { flex-shrink: 0; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.space-x-6 > * + * { margin-left: 1.5rem; }
.space-x-8 > * + * { margin-left: 2rem; }
.space-y-2 > * + * { margin-top: 0.5rem; }
.space-y-3 > * + * { margin-top: 0.75rem; }

/* Grid */
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.gap-4 { gap: 1rem; }
.gap-8 { gap: 2rem; }

/* Position */
.fixed { position: fixed; }
.relative { position: relative; }
.top-0 { top: 0; }
.z-50 { z-index: 50; }

/* Border */
.border-t { border-top-width: 1px; }
.border-2 { border-width: 2px; }
.border-gray-800 { border-color: #1f2937; }
.border-white\/30 { border-color: rgba(255, 255, 255, 0.3); }
.rounded-lg { border-radius: 0.5rem; }
.rounded-xl { border-radius: 0.75rem; }

/* Shadow */
.shadow-sm { box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05); }
.shadow-lg { box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05); }
.shadow-xl { box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04); }
.hover\:shadow-xl:hover { box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04); }

/* Typography */
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-4xl { font-size: 2.25rem; line-height: 2.5rem; }
.text-5xl { font-size: 3rem; line-height: 1; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.text-center { text-align: center; }
.leading-tight { line-height: 1.25; }

/* Backdrop */
.backdrop-blur-sm { backdrop-filter: blur(4px); }

/* Transition */
.transition {
  transition-property: color, background-color, border-color, text-decoration-color, fill, stroke, opacity, box-shadow, transform, filter, backdrop-filter;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  transition-duration: 150ms;
}

/* Custom Classes */
.hero-gradient {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

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

/* Responsive - Small screens (sm: 640px) */
@media (min-width: 640px) {
  .sm\:px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
  .sm\:flex-row { flex-direction: row; }
}

/* Responsive - Medium screens (md: 768px) */
@media (min-width: 768px) {
  .md\:hidden { display: none; }
  .md\:flex { display: flex; }
  .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .md\:flex-row { flex-direction: row; }
  .md\:text-6xl { font-size: 3.75rem; line-height: 1; }
  .md\:mb-0 { margin-bottom: 0; }
}

/* Responsive - Large screens (lg: 1024px) */
@media (min-width: 1024px) {
  .lg\:px-8 { padding-left: 2rem; padding-right: 2rem; }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}