/* Tailwind utility classes - minimal subset used by houkanweb.com */
/* Replaces CDN <script src="https://cdn.tailwindcss.com"></script> */

/* === Box Sizing Reset === */
*, *::before, *::after { box-sizing: border-box; }

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

/* === Flex === */
.flex-col { flex-direction: column; }
.flex-shrink-0 { flex-shrink: 0; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }

/* === Grid === */
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }

/* === Gap === */
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }
.gap-10 { gap: 2.5rem; }
.gap-12 { gap: 3rem; }

/* === Spacing - Margin === */
.mt-8 { margin-top: 2rem; }
.mt-10 { margin-top: 2.5rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-5 { margin-bottom: 1.25rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-10 { margin-bottom: 2.5rem; }
.mb-16 { margin-bottom: 4rem; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* === Spacing - Padding === */
.p-7 { padding: 1.75rem; }
.p-8 { padding: 2rem; }

/* === Sizing === */
.h-14 { height: 3.5rem; }
.h-48 { height: 12rem; }
.max-w-3xl { max-width: 48rem; }
.max-w-4xl { max-width: 56rem; }

/* === Typography === */
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.font-bold { font-weight: 700; }
.leading-relaxed { line-height: 1.625; }

/* === Colors === */
.text-gray-500 { color: #6b7280; }
.text-gray-600 { color: #4b5563; }
.text-gray-800 { color: #1f2937; }
.bg-white { background-color: #fff; }

/* === Border === */
.rounded-full { border-radius: 9999px; }

/* === Responsive: sm (640px) === */
@media (min-width: 640px) {
  .sm\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* === Responsive: md (768px) === */
@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\:flex-row { flex-direction: row; }
  .md\:gap-8 { gap: 2rem; }
  .md\:h-52 { height: 13rem; }
  .md\:p-8 { padding: 2rem; }
  .md\:p-10 { padding: 2.5rem; }
  .md\:mt-14 { margin-top: 3.5rem; }
  .md\:mb-24 { margin-bottom: 6rem; }
  .md\:text-2xl { font-size: 1.5rem; line-height: 2rem; }
}

/* === Responsive: lg (1024px) === */
@media (min-width: 1024px) {
  .lg\:flex-row { flex-direction: row; }
  .lg\:flex-shrink-0 { flex-shrink: 0; }
}