/* base.css - Phase 1: Cleaned & Standardized */

/* =================
   UTILITY CLASSES ONLY
   ================= */

/* Background utilities */
.bg-primary { background-color: var(--color-primary); }
.bg-secondary { background-color: var(--color-secondary); }
.bg-white { background-color: #fff; }
.bg-gray-50 { background-color: #f9fafb; }
.bg-gray-100 { background-color: #f7fafc; }
.bg-gray-200 { background-color: #edf2f7; }
.bg-blue-50 { background-color: #eff6ff; }
.bg-blue-100 { background-color: #dbeafe; }
.bg-transparent { background-color: transparent; }

/* Gradient utilities */
.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-blue-500 { --tw-gradient-from: #3b82f6; --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to, rgba(59, 130, 246, 0)); }
.to-purple-600 { --tw-gradient-to: #9333ea; }

/* Layout utilities */
.container {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 1rem;
}

/* Spacing utilities */
.py-0 { padding-top: 0; padding-bottom: 0; }
.py-12 { padding-top: 3rem; padding-bottom: 3rem; }
.py-16 { padding-top: 4rem; padding-bottom: 4rem; }
.py-20 { padding-top: 5rem; padding-bottom: 5rem; }
.py-24 { padding-top: 6rem; padding-bottom: 6rem; }
.py-32 { padding-top: 8rem; padding-bottom: 8rem; }

.m-0 { margin: 0; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }

.p-2 { padding: 0.5rem; }
.p-4 { padding: 1rem; }

/* Sizing utilities */
.min-h-screen { min-height: 100vh; }
.min-h-96 { min-height: 24rem; }
.w-full { width: 100%; }
.h-full { height: 100%; }
.h-screen { height: 100vh; }

/* Flexbox utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }

/* Text utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-base { font-size: var(--typography-font-body-size, 1rem); }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.text-4xl { font-size: 2.25rem; }

.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-white { color: #ffffff; }
.text-gray-600 { color: #718096; }
.text-gray-800 { color: #2d3748; }
.text-red-500 { color: #f56565; }

/* Position utilities */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

/* Z-index utilities */
.z-0 { z-index: 0; }
.z-10 { z-index: 10; }
.z-20 { z-index: 20; }
.z-30 { z-index: 30; }
.z-40 { z-index: 40; }
.z-50 { z-index: 50; }

/* Overflow utilities */
.overflow-hidden { overflow: hidden; }
.overflow-visible { overflow: visible; }

/* Border radius utilities */
.rounded { border-radius: var(--border-radius, 8px); }
.rounded-lg { border-radius: calc(var(--border-radius, 8px) * 1.5); }
.rounded-xl { border-radius: calc(var(--border-radius, 8px) * 2); }
.rounded-full { border-radius: 9999px; }

/* Shadow utilities */
.shadow { box-shadow: var(--shadow-sm, 0 1px 3px rgba(0,0,0,0.1)); }
.shadow-md { box-shadow: var(--shadow-md, 0 4px 6px rgba(0, 0, 0, 0.1)); }
.shadow-lg { box-shadow: var(--shadow-lg, 0 10px 15px rgba(0,0,0,0.1)); }
.shadow-xl { box-shadow: var(--shadow-xl, 0 20px 25px rgba(0, 0, 0, 0.1)); }

/* Transform utilities */
.transform { transform: var(--tw-transform); }
.translate-x-0 { --tw-translate-x: 0px; }
.translate-y-0 { --tw-translate-y: 0px; }
.-translate-y-1 { --tw-translate-y: -0.25rem; }
.-translate-y-2 { --tw-translate-y: -0.5rem; }
.scale-100 { --tw-scale-x: 1; --tw-scale-y: 1; }
.scale-105 { --tw-scale-x: 1.05; --tw-scale-y: 1.05; }

/* Transition utilities */
.transition { transition: var(--transition-normal, 300ms ease); }
.transition-all { transition: all var(--transition-normal, 300ms ease); }
.transition-colors { transition: background-color, border-color, color, fill, stroke var(--transition-fast, 150ms ease); }
.transition-transform { transition: transform var(--transition-fast, 150ms ease); }

.duration-150 { transition-duration: 150ms; }
.duration-300 { transition-duration: 300ms; }
.duration-500 { transition-duration: 500ms; }

.ease-in { transition-timing-function: var(--ease-in); }
.ease-out { transition-timing-function: var(--ease-out); }
.ease-in-out { transition-timing-function: var(--ease-in-out); }

/* Hover utilities */
.hover\:shadow-lg:hover { box-shadow: var(--shadow-lg, 0 10px 15px rgba(0,0,0,0.1)); }
.hover\:scale-105:hover { transform: scale(1.05); }
.hover\:-translate-y-1:hover { transform: translateY(-0.25rem); }

/* Focus utilities */
.focus\:outline-none:focus { outline: 2px solid transparent; outline-offset: 2px; }
.focus\:ring-2:focus { box-shadow: var(--tw-ring-inset) 0 0 0 calc(2px + var(--tw-ring-offset-width)) var(--tw-ring-color); }
.focus\:ring-blue-500:focus { --tw-ring-color: #3b82f6; }

/* Accessibility utilities */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.focus\:not-sr-only:focus {
    position: static;
    width: auto;
    height: auto;
    padding: inherit;
    margin: inherit;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* Responsive utilities */
@media (min-width: 768px) {
    .md\:flex-row { flex-direction: row; }
    .md\:text-left { text-align: left; }
    .md\:text-4xl { font-size: 2.25rem; }
}

@media (min-width: 1024px) {
    .lg\:text-5xl { font-size: 3rem; }
    .lg\:text-left { text-align: left; }
}

/* Print utilities */
@media print {
    .print\:hidden { display: none; }
}