/* Tailwind-like utility classes */
*, ::before, ::after { box-sizing: border-box; border-width: 0; border-style: solid; }
html { line-height: 1.5; -webkit-text-size-adjust: 100%; font-family: 'Inter', ui-sans-serif, system-ui, sans-serif; }
body { margin: 0; line-height: inherit; }
h1, h2, h3, h4, h5, h6 { font-size: inherit; font-weight: inherit; }
a { color: inherit; text-decoration: inherit; }
img, video { max-width: 100%; height: auto; display: block; }
button, input { font-family: inherit; font-size: 100%; line-height: inherit; color: inherit; margin: 0; padding: 0; }
button { cursor: pointer; background-color: transparent; background-image: none; }
ul, ol { list-style: none; margin: 0; padding: 0; }

/* Colors */
:root {
  --indigo-50: #eef2ff;
  --indigo-100: #e0e7ff;
  --indigo-500: #6366f1;
  --indigo-600: #4f46e5;
  --indigo-800: #3730a3;
  --blue-50: #eff6ff;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --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;
  --white: #ffffff;
}

/* Layout */
.min-h-screen { min-height: 100vh; }
.max-w-3xl { max-width: 48rem; }
.max-w-4xl { max-width: 56rem; }
.max-w-6xl { max-width: 72rem; }
.max-w-7xl { max-width: 80rem; }
.max-w-full { max-width: 100%; }
.max-w-md { max-width: 28rem; }
.mx-auto { margin-left: auto; margin-right: auto; }
.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-8 { padding-top: 2rem; padding-bottom: 2rem; }
.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-24 { padding-top: 6rem; }
.pb-4 { padding-bottom: 1rem; }
.pb-12 { padding-bottom: 3rem; }
.pb-20 { padding-bottom: 5rem; }
.p-2 { padding: 0.5rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }
.mt-8 { margin-top: 2rem; }
.mt-12 { margin-top: 3rem; }
.mt-16 { margin-top: 4rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-12 { margin-bottom: 3rem; }
.mb-16 { margin-bottom: 4rem; }

/* Flexbox */
.flex { display: flex; }
.inline-block { display: inline-block; }
.block { display: block; }
.hidden { display: none; }
.flex-col { flex-direction: column; }
.flex-1 { flex: 1 1 0%; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-4 { gap: 1rem; }
.gap-8 { gap: 2rem; }
.gap-12 { gap: 3rem; }
.space-x-2 > * + * { margin-left: 0.5rem; }
.space-x-4 > * + * { margin-left: 1rem; }
.space-x-8 > * + * { margin-left: 2rem; }
.space-y-2 > * + * { margin-top: 0.5rem; }
.space-y-4 > * + * { margin-top: 1rem; }

/* Grid */
.grid { display: grid; }
@media (min-width: 768px) {
  .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 { display: flex; }
  .md\:hidden { display: none; }
}

/* Typography */
.text-center { text-align: center; }
.text-left { text-align: left; }
.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-2xl { font-size: 1.5rem; line-height: 2rem; }
.text-3xl { font-size: 1.875rem; line-height: 2.25rem; }
.text-4xl { font-size: 2.25rem; line-height: 2.5rem; }
@media (min-width: 768px) {
  .md\:text-4xl { font-size: 2.25rem; line-height: 2.5rem; }
  .md\:text-5xl { font-size: 3rem; line-height: 1; }
  .md\:text-6xl { font-size: 3.75rem; line-height: 1; }
}
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-sans { font-family: 'Inter', ui-sans-serif, system-ui, sans-serif; }
.antialiased { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

/* Colors */
.text-white { color: var(--white); }
.text-gray-400 { color: var(--gray-400); }
.text-gray-500 { color: var(--gray-500); }
.text-gray-600 { color: var(--gray-600); }
.text-gray-700 { color: var(--gray-700); }
.text-gray-900 { color: var(--gray-900); }
.text-indigo-500 { color: var(--indigo-500); }
.text-indigo-600 { color: var(--indigo-600); }
.bg-white { background-color: var(--white); }
.bg-gray-50 { background-color: var(--gray-50); }
.bg-gray-100 { background-color: var(--gray-100); }
.bg-gray-900 { background-color: var(--gray-900); }

/* Gradients */
.bg-gradient-to-r { background-image: linear-gradient(to right, var(--tw-gradient-stops)); }
.bg-gradient-to-br { background-image: linear-gradient(to bottom right, var(--tw-gradient-stops)); }
.from-indigo-500 { --tw-gradient-from: var(--indigo-500); --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to, transparent); }
.from-indigo-600 { --tw-gradient-from: var(--indigo-600); --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to, transparent); }
.from-indigo-50 { --tw-gradient-from: var(--indigo-50); --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to, transparent); }
.to-blue-500 { --tw-gradient-to: var(--blue-500); }
.to-blue-600 { --tw-gradient-to: var(--blue-600); }
.to-blue-50 { --tw-gradient-to: var(--blue-50); }
.via-white { --tw-gradient-stops: var(--tw-gradient-from), var(--white), var(--tw-gradient-to, transparent); }

/* Borders */
.border { border-width: 1px; }
.border-2 { border-width: 2px; }
.border-t { border-top-width: 1px; }
.border-b { border-bottom-width: 1px; }
.border-gray-100 { border-color: var(--gray-100); }
.border-gray-200 { border-color: var(--gray-200); }
.border-gray-300 { border-color: var(--gray-300); }
.border-gray-800 { border-color: var(--gray-800); }
.border-indigo-500 { border-color: var(--indigo-500); }
.rounded-full { border-radius: 9999px; }
.rounded-lg { border-radius: 0.5rem; }
.rounded-2xl { border-radius: 1rem; }

/* Effects */
.shadow-lg { box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1); }
.backdrop-blur-md { backdrop-filter: blur(12px); }
.opacity-90 { opacity: 0.9; }

/* Sizing */
.w-5 { width: 1.25rem; }
.w-6 { width: 1.5rem; }
.w-8 { width: 2rem; }
.w-16 { width: 4rem; }
.w-20 { width: 5rem; }
.w-full { width: 100%; }
.h-5 { height: 1.25rem; }
.h-6 { height: 1.5rem; }
.h-8 { height: 2rem; }
.h-16 { height: 4rem; }
.h-48 { height: 12rem; }
.h-auto { height: auto; }

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

/* Object */
.object-contain { object-fit: contain; }

/* Transitions */
.transition-all { transition: all 0.15s ease; }
.transition-transform { transition: transform 0.15s ease; }
.transform { transform: translateZ(0); }
.rotate-180 { transform: rotate(180deg); }

/* Hover states */
.hover\:text-white:hover { color: var(--white); }
.hover\:text-indigo-600:hover { color: var(--indigo-600); }
.hover\:text-indigo-800:hover { color: var(--indigo-800); }
.hover\:bg-gray-100:hover { background-color: var(--gray-100); }
.hover\:bg-indigo-50:hover { background-color: var(--indigo-50); }
.hover\:from-indigo-600:hover { --tw-gradient-from: var(--indigo-600); }
.hover\:to-blue-600:hover { --tw-gradient-to: var(--blue-600); }

/* Focus states */
.focus\:outline-none:focus { outline: 2px solid transparent; outline-offset: 2px; }
.focus\:ring-2:focus { box-shadow: 0 0 0 2px var(--indigo-500); }
.focus\:ring-indigo-500:focus { --tw-ring-color: var(--indigo-500); }

/* Cursor */
.cursor-not-allowed { cursor: not-allowed; }

/* Prose styles for content pages */
.prose { color: var(--gray-700); max-width: 65ch; }
.prose h2 { font-size: 1.5rem; font-weight: 700; color: var(--gray-900); margin-top: 2rem; margin-bottom: 1rem; }
.prose p { margin-bottom: 1rem; }
.prose a { color: var(--indigo-600); }
.prose a:hover { color: var(--indigo-800); }
.prose strong { font-weight: 600; color: var(--gray-900); }
.prose-lg { font-size: 1.125rem; line-height: 1.8; }

/* Responsive visibility */
@media (min-width: 640px) {
  .sm\:flex-row { flex-direction: row; }
  .sm\:px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
}
@media (min-width: 1024px) {
  .lg\:px-8 { padding-left: 2rem; padding-right: 2rem; }
}