/* ==========================================================================
   UTILITY CLASSES
   Uses CSS variables from variables.css for design system consistency.
   Spacing scale: 4px increments (1=4px, 2=8px, 3=12px, 4=16px, 5=20px, 6=24px, 8=32px, 10=40px)
   ========================================================================== */

/* --------------------------------------------------------------------------
   DISPLAY & FLEXBOX
   -------------------------------------------------------------------------- */
.block { display: block; }
.inline-block { display: inline-block; }
.inline-flex { display: inline-flex; }
.hidden { display: none; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }
.flex-1 { flex: 1 1 0%; }
.flex-auto { flex: 1 1 auto; }
.flex-none { flex: none; }
.flex-shrink-0 { flex-shrink: 0; }
.flex-grow { flex-grow: 1; }

/* Alignment */
.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.items-baseline { align-items: baseline; }
.items-stretch { align-items: stretch; }

.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }
.justify-evenly { justify-content: space-evenly; }

.self-start { align-self: flex-start; }
.self-center { align-self: center; }
.self-end { align-self: flex-end; }

/* --------------------------------------------------------------------------
   GAP (Flexbox & Grid)
   -------------------------------------------------------------------------- */
.gap-0 { gap: 0; }
.gap-1 { gap: var(--space-1, 4px); }
.gap-2 { gap: var(--space-2, 8px); }
.gap-3 { gap: var(--space-3, 12px); }
.gap-4 { gap: var(--space-4, 16px); }
.gap-5 { gap: 20px; }
.gap-6 { gap: var(--space-6, 24px); }
.gap-8 { gap: var(--space-8, 32px); }

.gap-x-2 { column-gap: var(--space-2, 8px); }
.gap-x-4 { column-gap: var(--space-4, 16px); }
.gap-x-6 { column-gap: var(--space-6, 24px); }
.gap-y-2 { row-gap: var(--space-2, 8px); }
.gap-y-4 { row-gap: var(--space-4, 16px); }
.gap-y-6 { row-gap: var(--space-6, 24px); }

/* --------------------------------------------------------------------------
   SPACE-Y / SPACE-X (Child Spacing)
   These add margin between children, commonly used for lists/stacks.
   -------------------------------------------------------------------------- */
.space-y-1 > * + * { margin-top: var(--space-1, 4px); }
.space-y-2 > * + * { margin-top: var(--space-2, 8px); }
.space-y-3 > * + * { margin-top: var(--space-3, 12px); }
.space-y-4 > * + * { margin-top: var(--space-4, 16px); }
.space-y-5 > * + * { margin-top: 20px; }
.space-y-6 > * + * { margin-top: var(--space-6, 24px); }
.space-y-8 > * + * { margin-top: var(--space-8, 32px); }

.space-x-1 > * + * { margin-left: var(--space-1, 4px); }
.space-x-2 > * + * { margin-left: var(--space-2, 8px); }
.space-x-3 > * + * { margin-left: var(--space-3, 12px); }
.space-x-4 > * + * { margin-left: var(--space-4, 16px); }

/* --------------------------------------------------------------------------
   GRID
   -------------------------------------------------------------------------- */
.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
.col-span-2 { grid-column: span 2; }
.col-span-3 { grid-column: span 3; }

/* --------------------------------------------------------------------------
   MARGIN
   -------------------------------------------------------------------------- */
.m-0 { margin: 0; }
.m-1 { margin: var(--space-1, 4px); }
.m-2 { margin: var(--space-2, 8px); }
.m-4 { margin: var(--space-4, 16px); }
.m-auto { margin: auto; }

.mx-auto { margin-left: auto; margin-right: auto; }
.mx-2 { margin-left: var(--space-2, 8px); margin-right: var(--space-2, 8px); }
.mx-4 { margin-left: var(--space-4, 16px); margin-right: var(--space-4, 16px); }

.my-2 { margin-top: var(--space-2, 8px); margin-bottom: var(--space-2, 8px); }
.my-4 { margin-top: var(--space-4, 16px); margin-bottom: var(--space-4, 16px); }
.my-6 { margin-top: var(--space-6, 24px); margin-bottom: var(--space-6, 24px); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-1, 4px); }
.mt-2 { margin-top: var(--space-2, 8px); }
.mt-3 { margin-top: var(--space-3, 12px); }
.mt-4 { margin-top: var(--space-4, 16px); }
.mt-5 { margin-top: 20px; }
.mt-6 { margin-top: var(--space-6, 24px); }
.mt-8 { margin-top: var(--space-8, 32px); }
.mt-10 { margin-top: var(--space-10, 40px); }
.mt-12 { margin-top: 48px; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-1, 4px); }
.mb-2 { margin-bottom: var(--space-2, 8px); }
.mb-3 { margin-bottom: var(--space-3, 12px); }
.mb-4 { margin-bottom: var(--space-4, 16px); }
.mb-6 { margin-bottom: var(--space-6, 24px); }
.mb-8 { margin-bottom: var(--space-8, 32px); }

.ml-1 { margin-left: var(--space-1, 4px); }
.ml-2 { margin-left: var(--space-2, 8px); }
.ml-4 { margin-left: var(--space-4, 16px); }
.ml-auto { margin-left: auto; }

.mr-1 { margin-right: var(--space-1, 4px); }
.mr-2 { margin-right: var(--space-2, 8px); }
.mr-4 { margin-right: var(--space-4, 16px); }
.mr-auto { margin-right: auto; }

.-mt-1 { margin-top: -4px; }
.-mt-2 { margin-top: -8px; }

/* --------------------------------------------------------------------------
   PADDING
   -------------------------------------------------------------------------- */
.p-0 { padding: 0; }
.p-1 { padding: var(--space-1, 4px); }
.p-2 { padding: var(--space-2, 8px); }
.p-3 { padding: var(--space-3, 12px); }
.p-4 { padding: var(--space-4, 16px); }
.p-5 { padding: 20px; }
.p-6 { padding: var(--space-6, 24px); }
.p-8 { padding: var(--space-8, 32px); }

.px-2 { padding-left: var(--space-2, 8px); padding-right: var(--space-2, 8px); }
.px-3 { padding-left: var(--space-3, 12px); padding-right: var(--space-3, 12px); }
.px-4 { padding-left: var(--space-4, 16px); padding-right: var(--space-4, 16px); }
.px-6 { padding-left: var(--space-6, 24px); padding-right: var(--space-6, 24px); }

.py-1 { padding-top: var(--space-1, 4px); padding-bottom: var(--space-1, 4px); }
.py-2 { padding-top: var(--space-2, 8px); padding-bottom: var(--space-2, 8px); }
.py-3 { padding-top: var(--space-3, 12px); padding-bottom: var(--space-3, 12px); }
.py-4 { padding-top: var(--space-4, 16px); padding-bottom: var(--space-4, 16px); }
.py-6 { padding-top: var(--space-6, 24px); padding-bottom: var(--space-6, 24px); }

.pt-0 { padding-top: 0; }
.pt-2 { padding-top: var(--space-2, 8px); }
.pt-4 { padding-top: var(--space-4, 16px); }
.pt-6 { padding-top: var(--space-6, 24px); }
.pt-10 { padding-top: var(--space-10, 40px); }

.pb-2 { padding-bottom: var(--space-2, 8px); }
.pb-4 { padding-bottom: var(--space-4, 16px); }
.pb-6 { padding-bottom: var(--space-6, 24px); }

.pl-2 { padding-left: var(--space-2, 8px); }
.pl-4 { padding-left: var(--space-4, 16px); }
.pr-2 { padding-right: var(--space-2, 8px); }
.pr-4 { padding-right: var(--space-4, 16px); }

/* --------------------------------------------------------------------------
   WIDTH & HEIGHT
   -------------------------------------------------------------------------- */
.w-full { width: 100%; }
.w-auto { width: auto; }
.w-1\/2 { width: 50%; }
.w-1\/3 { width: 33.333%; }
.w-2\/3 { width: 66.666%; }
.w-4 { width: 16px; }
.w-5 { width: 20px; }
.w-6 { width: 24px; }
.w-8 { width: 32px; }
.w-10 { width: 40px; }
.w-12 { width: 48px; }

.min-w-0 { min-width: 0; }
.max-w-sm { max-width: 24rem; }
.max-w-md { max-width: 28rem; }
.max-w-lg { max-width: 32rem; }
.max-w-xl { max-width: 36rem; }
.max-w-2xl { max-width: 42rem; }
.max-w-full { max-width: 100%; }

.h-full { height: 100%; }
.h-auto { height: auto; }
.h-4 { height: 16px; }
.h-5 { height: 20px; }
.h-6 { height: 24px; }
.h-8 { height: 32px; }
.h-10 { height: 40px; }
.h-12 { height: 48px; }

.min-h-0 { min-height: 0; }
.min-h-screen { min-height: 100vh; }

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

.text-xs { font-size: 11px; }
.text-sm { font-size: 13px; }
.text-base { font-size: 15px; }
.text-lg { font-size: 18px; }
.text-xl { font-size: 20px; }
.text-2xl { font-size: 24px; }
.text-3xl { font-size: 30px; }

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

.leading-none { line-height: 1; }
.leading-tight { line-height: 1.25; }
.leading-snug { line-height: 1.375; }
.leading-normal { line-height: 1.5; }
.leading-relaxed { line-height: 1.625; }
.leading-loose { line-height: 2; }

.tracking-tight { letter-spacing: -0.025em; }
.tracking-normal { letter-spacing: 0; }
.tracking-wide { letter-spacing: 0.025em; }
.tracking-wider { letter-spacing: 0.05em; }

.uppercase { text-transform: uppercase; }
.lowercase { text-transform: lowercase; }
.capitalize { text-transform: capitalize; }
.normal-case { text-transform: none; }

.underline { text-decoration: underline; }
.line-through { text-decoration: line-through; }
.no-underline { text-decoration: none; }

.whitespace-nowrap { white-space: nowrap; }
.whitespace-pre-wrap { white-space: pre-wrap; }

.truncate {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* --------------------------------------------------------------------------
   COLORS - Using Design System Variables
   -------------------------------------------------------------------------- */
/* Text Colors - Semantic */
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }

/* Text Colors - Status */
.text-success { color: var(--status-success); }
.text-warning { color: var(--status-warning); }
.text-warm { color: var(--status-warm); } /* Warm leads - positive amber */
.text-critical { color: var(--status-critical); }
.text-info { color: var(--status-info); }

/* Text Colors - Tailwind-compatible aliases */
.text-white { color: #fff; }
.text-black { color: #000; }
.text-gray-300 { color: #D1D5DB; }
.text-gray-400 { color: #9CA3AF; }
.text-gray-500 { color: var(--text-muted, #6B7280); }
.text-gray-600 { color: #4B5563; }
.text-gray-700 { color: #374151; }
.text-gray-800 { color: #1F2937; }
.text-gray-900 { color: #111827; }
.text-blue-400 { color: #60A5FA; }
.text-blue-500 { color: var(--accent-primary, #3B82F6); }
.text-blue-600 { color: #2563EB; }
.text-green-500 { color: var(--status-success, #10B981); }
.text-green-600 { color: #059669; }
.text-red-500 { color: var(--status-critical, #EF4444); }
.text-red-600 { color: #DC2626; }
.text-orange-500 { color: var(--status-warning, #F59E0B); }
.text-purple-500 { color: var(--status-info, #6366F1); }

/* Background Colors */
.bg-transparent { background-color: transparent; }
.bg-white { background-color: #fff; }
.bg-black { background-color: #000; }
.bg-gray-50 { background-color: #F9FAFB; }
.bg-gray-100 { background-color: #F3F4F6; }
.bg-gray-200 { background-color: #E5E7EB; }
.bg-gray-800 { background-color: #1F2937; }
.bg-gray-900 { background-color: #111827; }
.bg-blue-50 { background-color: rgba(59, 130, 246, 0.1); }
.bg-blue-100 { background-color: rgba(59, 130, 246, 0.2); }
.bg-blue-500 { background-color: var(--accent-primary, #3B82F6); }
.bg-green-50 { background-color: rgba(16, 185, 129, 0.1); }
.bg-green-100 { background-color: rgba(16, 185, 129, 0.2); }
.bg-green-500 { background-color: var(--status-success, #10B981); }
.bg-red-50 { background-color: rgba(239, 68, 68, 0.1); }
.bg-red-100 { background-color: rgba(239, 68, 68, 0.2); }
.bg-red-500 { background-color: var(--status-critical, #EF4444); }
.bg-orange-50 { background-color: rgba(245, 158, 11, 0.1); }
.bg-orange-500 { background-color: var(--status-warning, #F59E0B); }
.bg-purple-50 { background-color: rgba(99, 102, 241, 0.1); }

/* --------------------------------------------------------------------------
   BORDERS & RADIUS
   -------------------------------------------------------------------------- */
.border { border: 1px solid var(--border-subtle, #E5E7EB); }
.border-0 { border: 0; }
.border-2 { border-width: 2px; }
.border-t { border-top: 1px solid var(--border-subtle, #E5E7EB); }
.border-b { border-bottom: 1px solid var(--border-subtle, #E5E7EB); }
.border-l { border-left: 1px solid var(--border-subtle, #E5E7EB); }
.border-r { border-right: 1px solid var(--border-subtle, #E5E7EB); }

.border-l-2 { border-left-width: 2px; }
.border-l-4 { border-left-width: 4px; }

.border-transparent { border-color: transparent; }
.border-gray-100 { border-color: #F3F4F6; }
.border-gray-200 { border-color: #E5E7EB; }
.border-gray-300 { border-color: #D1D5DB; }
.border-blue-500 { border-color: var(--accent-primary, #3B82F6); }
.border-green-500 { border-color: var(--status-success, #10B981); }
.border-red-500 { border-color: var(--status-critical, #EF4444); }
.border-orange-500 { border-color: var(--status-warning, #F59E0B); }

.border-l-blue-500 { border-left-color: var(--accent-primary, #3B82F6); }
.border-l-green-500 { border-left-color: var(--status-success, #10B981); }
.border-l-red-500 { border-left-color: var(--status-critical, #EF4444); }
.border-l-orange-500 { border-left-color: var(--status-warning, #F59E0B); }

.rounded-none { border-radius: 0; }
.rounded-sm { border-radius: 2px; }
.rounded { border-radius: 4px; }
.rounded-md { border-radius: 6px; }
.rounded-lg { border-radius: 8px; }
.rounded-xl { border-radius: 12px; }
.rounded-2xl { border-radius: 16px; }
.rounded-full { border-radius: 9999px; }

/* --------------------------------------------------------------------------
   EFFECTS & SHADOWS
   -------------------------------------------------------------------------- */
.shadow-none { box-shadow: none; }
.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 -1px rgba(0, 0, 0, 0.1); }
.shadow-md { box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1); }
.shadow-lg { box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1); }
.shadow-xl { box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1); }
.shadow-2xl { box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25); }

.opacity-0 { opacity: 0; }
.opacity-25 { opacity: 0.25; }
.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }
.opacity-100 { opacity: 1; }

/* --------------------------------------------------------------------------
   TRANSITIONS & ANIMATIONS
   -------------------------------------------------------------------------- */
.transition { transition: all 150ms ease; }
.transition-all { transition: all 150ms ease; }
.transition-colors { transition: color, background-color, border-color 150ms ease; }
.transition-opacity { transition: opacity 150ms ease; }
.transition-transform { transition: transform 150ms ease; }

/* Transform */
.transform { transform: translateX(0); }
.translate-x-0 { transform: translateX(0); }
.translate-x-full { transform: translateX(100%); }
.-translate-x-full { transform: translateX(-100%); }
.translate-y-0 { transform: translateY(0); }
.translate-y-full { transform: translateY(100%); }
.-translate-y-full { transform: translateY(-100%); }

.duration-75 { transition-duration: 75ms; }
.duration-100 { transition-duration: 100ms; }
.duration-150 { transition-duration: 150ms; }
.duration-200 { transition-duration: 200ms; }
.duration-300 { transition-duration: 300ms; }

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

/* --------------------------------------------------------------------------
   POSITION & Z-INDEX
   -------------------------------------------------------------------------- */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }
.static { position: static; }

.inset-0 { top: 0; right: 0; bottom: 0; left: 0; }
.inset-y-0 { top: 0; bottom: 0; }
.inset-x-0 { left: 0; right: 0; }
.top-0 { top: 0; }
.right-0 { right: 0; }
.bottom-0 { bottom: 0; }
.left-0 { left: 0; }

.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 & VISIBILITY
   -------------------------------------------------------------------------- */
.overflow-auto { overflow: auto; }
.overflow-hidden { overflow: hidden; }
.overflow-visible { overflow: visible; }
.overflow-scroll { overflow: scroll; }
.overflow-x-auto { overflow-x: auto; }
.overflow-y-auto { overflow-y: auto; }
.overflow-x-hidden { overflow-x: hidden; }

.visible { visibility: visible; }
.invisible { visibility: hidden; }

/* --------------------------------------------------------------------------
   CURSOR & INTERACTION
   -------------------------------------------------------------------------- */
.cursor-pointer { cursor: pointer; }
.cursor-default { cursor: default; }
.cursor-not-allowed { cursor: not-allowed; }
.cursor-wait { cursor: wait; }
.cursor-move { cursor: move; }

.pointer-events-none { pointer-events: none; }
.pointer-events-auto { pointer-events: auto; }

.select-none { user-select: none; }
.select-text { user-select: text; }
.select-all { user-select: all; }

/* --------------------------------------------------------------------------
   MISC
   -------------------------------------------------------------------------- */
.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;
}

.object-cover { object-fit: cover; }
.object-contain { object-fit: contain; }

/* Links */
.link-muted { 
    color: var(--text-muted); 
    text-decoration: underline; 
    cursor: pointer;
    font-size: 13px;
}
.link-muted:hover { 
    color: var(--text-primary); 
}

/* --------------------------------------------------------------------------
   HOVER STATES (use with transition classes)
   -------------------------------------------------------------------------- */
.hover\:bg-gray-50:hover { background-color: #F9FAFB; }
.hover\:bg-gray-100:hover { background-color: #F3F4F6; }
.hover\:bg-gray-200:hover { background-color: #E5E7EB; }
.hover\:bg-blue-50:hover { background-color: rgba(59, 130, 246, 0.1); }
.hover\:shadow-sm:hover { box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05); }
.hover\:shadow-md:hover { box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1); }
.hover\:opacity-100:hover { opacity: 1; }
.hover\:text-blue-600:hover { color: #2563EB; }
.hover\:underline:hover { text-decoration: underline; }