/*
 * Custom Compiled Tailwind CSS Framework (Core Utility Subset)
 * Tailored for the Scientific E-commerce Design System.
 * Incorporates modern layout variables, grids, spacing, flexbox, colors, and responsive breakpoints.
 */

/* Resets */
*, ::before, ::after {
  box-sizing: border-box;
  border-width: 0;
  border-style: solid;
  border-color: #e2e8f0;
}

ul, ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

html {
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  -moz-tab-size: 4;
  tab-size: 4;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
}

body {
  margin: 0;
  line-height: inherit;
  background-color: #f8fafc;
  color: #1e293b;
}

/* Colors & Custom Theme Variables */
:root {
  --primary: #1e40af;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --accent: #3b82f6;
  --accent-light: #dbeafe;
  --dark: #0f172a;
  --gray-light: #f1f5f9;
  --gray-border: #e2e8f0;
}

/* Layout Containers */
.container {
  width: 100%;
  margin-right: auto;
  margin-left: auto;
  padding-right: 1rem;
  padding-left: 1rem;
}

@media (min-width: 640px) { .container { max-width: 640px; } }
@media (min-width: 768px) { .container { max-width: 768px; } }
@media (min-width: 1024px) { .container { max-width: 1024px; } }
@media (min-width: 1280px) { .container { max-width: 1280px; } }

/* Grid System */
.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@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)); }
}

@media (min-width: 1024px) {
  .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .lg\:grid-cols-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
}

.col-span-1 { grid-column: span 1 / span 1; }
.col-span-2 { grid-column: span 2 / span 2; }
.col-span-3 { grid-column: span 3 / span 3; }
.col-span-4 { grid-column: span 4 / span 4; }
.col-span-5 { grid-column: span 5 / span 5; }
.col-span-6 { grid-column: span 6 / span 6; }
.col-span-7 { grid-column: span 7 / span 7; }
.col-span-8 { grid-column: span 8 / span 8; }
.col-span-9 { grid-column: span 9 / span 9; }
.col-span-10 { grid-column: span 10 / span 10; }
.col-span-11 { grid-column: span 11 / span 11; }
.col-span-12 { grid-column: span 12 / span 12; }

@media (min-width: 768px) {
  .md\:col-span-1 { grid-column: span 1 / span 1; }
  .md\:col-span-2 { grid-column: span 2 / span 2; }
  .md\:col-span-3 { grid-column: span 3 / span 3; }
  .md\:col-span-4 { grid-column: span 4 / span 4; }
  .md\:col-span-5 { grid-column: span 5 / span 5; }
  .md\:col-span-6 { grid-column: span 6 / span 6; }
  .md\:col-span-7 { grid-column: span 7 / span 7; }
  .md\:col-span-8 { grid-column: span 8 / span 8; }
  .md\:col-span-9 { grid-column: span 9 / span 9; }
  .md\:col-span-10 { grid-column: span 10 / span 10; }
  .md\:col-span-11 { grid-column: span 11 / span 11; }
  .md\:col-span-12 { grid-column: span 12 / span 12; }
}

@media (min-width: 1024px) {
  .lg\:col-span-1 { grid-column: span 1 / span 1; }
  .lg\:col-span-2 { grid-column: span 2 / span 2; }
  .lg\:col-span-3 { grid-column: span 3 / span 3; }
  .lg\:col-span-4 { grid-column: span 4 / span 4; }
  .lg\:col-span-5 { grid-column: span 5 / span 5; }
  .lg\:col-span-6 { grid-column: span 6 / span 6; }
  .lg\:col-span-7 { grid-column: span 7 / span 7; }
  .lg\:col-span-8 { grid-column: span 8 / span 8; }
  .lg\:col-span-9 { grid-column: span 9 / span 9; }
  .lg\:col-span-10 { grid-column: span 10 / span 10; }
  .lg\:col-span-11 { grid-column: span 11 / span 11; }
  .lg\:col-span-12 { grid-column: span 12 / span 12; }
}

/* Flexbox System */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }
.flex-1 { flex: 1 1 0%; }
.flex-shrink-0 { flex-shrink: 0; }

@media (min-width: 768px) {
  .md\:flex-row { flex-direction: row; }
  .md\:items-center { align-items: center; }
  .md\:justify-between { justify-content: space-between; }
}

/* Spacing System */
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }

.m-0 { margin: 0; }
.m-1 { margin: 0.25rem; }
.m-2 { margin: 0.5rem; }
.m-4 { margin: 1rem; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mx-auto { margin-left: auto; margin-right: auto; }
.mr-2 { margin-right: 0.5rem; }
.mr-3 { margin-right: 0.75rem; }
.ml-2 { margin-left: 0.5rem; }

.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 0.75rem; }
.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }
.px-2 { padding-left: 0.5rem; padding-right: 0.5rem; }
.px-3 { padding-left: 0.75rem; padding-right: 0.75rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.py-1 { padding-top: 0.25rem; padding-bottom: 0.25rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.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; }

@media (min-width: 768px) {
  .md\:p-8 { padding: 2rem; }
  .md\:py-12 { padding-top: 3rem; padding-bottom: 3rem; }
}

/* Typography */
.text-xs { font-size: 0.75rem; line-height: 1rem; }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-base { font-size: 1rem; line-height: 1.5rem; }
.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; }
.text-5xl { font-size: 3rem; line-height: 1; }

.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-extrabold { font-weight: 800; }

.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

.text-white { color: #ffffff; }
.text-primary-800 { color: #1e40af; }
.text-primary-700 { color: #1d4ed8; }
.text-primary-600 { color: #2563eb; }
.text-gray-500 { color: #64748b; }
.text-gray-600 { color: #475569; }
.text-gray-700 { color: #334155; }
.text-gray-900 { color: #0f172a; }
.text-red-600 { color: #dc2626; }
.text-red-800 { color: #991b1b; }
.text-emerald-600 { color: #059669; }
.text-emerald-800 { color: #065f46; }
.text-amber-800 { color: #92400e; }
.text-indigo-600 { color: #4f46e5; }

.underline { text-decoration: underline; }
.hover\:underline:hover { text-decoration: underline; }

/* Backgrounds */
.bg-white { background-color: #ffffff; }
.bg-gray-50 { background-color: #f8fafc; }
.bg-gray-100 { background-color: #f1f5f9; }
.bg-gray-200 { background-color: #e2e8f0; }
.bg-blue-50 { background-color: #eff6ff; }
.bg-blue-100 { background-color: #dbeafe; }
.bg-blue-600 { background-color: #2563eb; }
.bg-blue-800 { background-color: #1e40af; }
.bg-blue-900 { background-color: #1e3a8a; }
.bg-dark { background-color: #0f172a; }
.bg-red-50 { background-color: #fef2f2; }
.bg-red-100 { background-color: #fee2e2; }
.bg-red-600 { background-color: #dc2626; }
.bg-emerald-50 { background-color: #ecfdf5; }
.bg-emerald-100 { background-color: #d1fae5; }
.bg-emerald-600 { background-color: #059669; }
.bg-amber-50 { background-color: #fffbeb; }
.bg-amber-100 { background-color: #fef3c7; }
.bg-amber-500 { background-color: #f59e0b; }

/* Transitions & Hovers */
.transition { transition-property: all; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }
.hover\:bg-blue-700:hover { background-color: #1d4ed8; }
.hover\:bg-blue-800:hover { background-color: #1e40af; }
.hover\:bg-gray-50:hover { background-color: #f8fafc; }
.hover\:bg-gray-100:hover { background-color: #f1f5f9; }
.hover\:text-blue-600:hover { color: #2563eb; }
.hover\:text-blue-800:hover { color: #1e40af; }
.hover\:shadow-lg:hover { box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05); }

/* Borders & Shadows */
.border { border-width: 1px; }
.border-b { border-bottom-width: 1px; }
.border-t { border-top-width: 1px; }
.border-r { border-right-width: 1px; }
.border-gray-100 { border-color: #f1f5f9; }
.border-gray-200 { border-color: #e2e8f0; }
.border-gray-300 { border-color: #cbd5e1; }
.border-blue-200 { border-color: #bfdbfe; }
.border-red-200 { border-color: #fca5a5; }
.border-emerald-200 { border-color: #6ee7b7; }
.border-amber-200 { border-color: #fde68a; }

.rounded-none { border-radius: 0px; }
.rounded-sm { border-radius: 0.125rem; }
.rounded { border-radius: 0.25rem; }
.rounded-md { border-radius: 0.375rem; }
.rounded-lg { border-radius: 0.5rem; }
.rounded-xl { border-radius: 0.75rem; }
.rounded-2xl { border-radius: 1rem; }
.rounded-full { border-radius: 9999px; }

.shadow-sm { box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05); }
.shadow { box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06); }
.shadow-md { box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06); }
.shadow-lg { box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05); }

/* Forms & Inputs */
.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border-width: 1px;
  border-color: #cbd5e1;
  border-radius: 0.375rem;
  font-size: 0.875rem;
  line-height: 1.25rem;
  background-color: #ffffff;
  color: #0f172a;
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: 2px solid transparent;
  outline-offset: 2px;
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.label {
  display: block;
  margin-bottom: 0.375rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: #334155;
}

/* Custom Utilities */
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

@media (min-width: 768px) {
  .md\:block { display: block; }
  .md\:inline { display: inline; }
  .md\:hidden { display: none; }
  .md\:flex { display: flex; }
}

@media (min-width: 1024px) {
  .lg\:block { display: block; }
  .lg\:inline { display: inline; }
  .lg\:hidden { display: none; }
  .lg\:flex { display: flex; }
}
.w-full { width: 100%; }
.h-full { height: 100%; }
.min-h-screen { min-height: 100vh; }
.mx-4 { margin-left: 1rem; margin-right: 1rem; }
.w-8 { width: 2rem; }
.h-8 { height: 2rem; }
.w-12 { width: 3rem; }
.h-12 { height: 3rem; }
.w-16 { width: 4rem; }
.h-16 { height: 4rem; }
.w-24 { width: 6rem; }
.h-24 { height: 6rem; }
.w-auto { width: auto; }
.h-auto { height: auto; }
.max-w-xs { max-width: 20rem; }
.max-w-md { max-width: 28rem; }
.max-w-4xl { max-width: 56rem; }

.overflow-x-auto { overflow-x: auto; }
.list-disc { list-style-type: disc; }
.list-inside { list-style-position: inside; }

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.625rem;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1;
  border-radius: 9999px;
}

/* Button variants */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 0.375rem;
  transition: all 150ms;
  cursor: pointer;
}
.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
}
.btn-primary:hover {
  background-color: var(--primary-hover);
}
.btn-secondary {
  background-color: #ffffff;
  color: var(--primary);
  border: 1px solid var(--primary);
}
.btn-secondary:hover {
  background-color: var(--primary-light);
}
.btn-danger {
  background-color: #dc2626;
  color: #ffffff;
}
.btn-danger:hover {
  background-color: #b91c1c;
}

/* Positioning Utilities */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.top-0 { top: 0; }
.top-2 { top: 0.5rem; }
.right-2 { right: 0.5rem; }
.left-0 { left: 0; }
.right-0 { right: 0; }
.z-50 { z-index: 50; }
.z-10 { z-index: 10; }
.z-0 { z-index: 0; }