/* ===========================
   UTILITY CLASSES
   (Merged from utilities.css for single-file architecture)
   =========================== */

/* =============================================================================
   TYPOGRAPHY UTILITIES
   ============================================================================= */

/* Font Size Scale */
.text-xs { font-size: 0.75rem; }      /* 12px */
.text-sm { font-size: 0.875rem; }     /* 14px */
.text-base { font-size: 1rem; }       /* 16px */
.text-lg { font-size: 1.125rem; }     /* 18px */
.text-xl { font-size: 1.25rem; }      /* 20px */
.text-2xl { font-size: 1.5rem; }      /* 24px */
.text-3xl { font-size: 1.875rem; }    /* 30px */
.text-4xl { font-size: 2.25rem; }     /* 36px */

/* Font Weight */
.font-light { font-weight: 300; }
.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 Alignment - Corrected */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-justify { text-align: justify; }

/* Text Transform */
.uppercase { text-transform: uppercase; }
.lowercase { text-transform: lowercase; }
.capitalize { text-transform: capitalize; }
.normal-case { text-transform: none; }

/* Text Decoration */
.underline { text-decoration: underline; }
.line-through { text-decoration: line-through; }
.no-underline { text-decoration: none; }

/* Line Height */
.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; }

/* Letter Spacing */
.tracking-tight { letter-spacing: -0.05em; }
.tracking-normal { letter-spacing: 0; }
.tracking-wide { letter-spacing: 0.05em; }
.tracking-wider { letter-spacing: 0.1em; }

/* =============================================================================
   SPACING UTILITIES (4px base scale)
   ============================================================================= */

/* Padding - All Sides */
.p-0 { padding: 0; }
.p-1 { padding: 0.25rem; }    /* 4px */
.p-2 { padding: 0.5rem; }     /* 8px */
.p-3 { padding: 0.75rem; }    /* 12px */
.p-4 { padding: 1rem; }       /* 16px */
.p-5 { padding: 1.25rem; }    /* 20px */
.p-6 { padding: 1.5rem; }     /* 24px */
.p-8 { padding: 2rem; }       /* 32px */
.p-10 { padding: 2.5rem; }    /* 40px */
.p-12 { padding: 3rem; }      /* 48px */

/* Padding - X Axis */
.px-0 { padding-left: 0; padding-right: 0; }
.px-1 { padding-left: 0.25rem; padding-right: 0.25rem; }
.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-5 { padding-left: 1.25rem; padding-right: 1.25rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.px-8 { padding-left: 2rem; padding-right: 2rem; }
.px-10 { padding-left: 2.5rem; padding-right: 2.5rem; }

/* Padding - Y Axis */
.py-0 { padding-top: 0; padding-bottom: 0; }
.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-5 { padding-top: 1.25rem; padding-bottom: 1.25rem; }
.py-6 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.py-8 { padding-top: 2rem; padding-bottom: 2rem; }
.py-10 { padding-top: 2.5rem; padding-bottom: 2.5rem; }

/* Padding - Individual Sides */
.pt-0 { padding-top: 0; }
.pt-1 { padding-top: 0.25rem; }
.pt-2 { padding-top: 0.5rem; }
.pt-3 { padding-top: 0.75rem; }
.pt-4 { padding-top: 1rem; }
.pt-5 { padding-top: 1.25rem; }
.pt-6 { padding-top: 1.5rem; }
.pt-8 { padding-top: 2rem; }
.pt-10 { padding-top: 2.5rem; }

.pr-0 { padding-right: 0; }
.pr-1 { padding-right: 0.25rem; }
.pr-2 { padding-right: 0.5rem; }
.pr-3 { padding-right: 0.75rem; }
.pr-4 { padding-right: 1rem; }
.pr-5 { padding-right: 1.25rem; }
.pr-6 { padding-right: 1.5rem; }
.pr-8 { padding-right: 2rem; }

.pb-0 { padding-bottom: 0; }
.pb-1 { padding-bottom: 0.25rem; }
.pb-2 { padding-bottom: 0.5rem; }
.pb-3 { padding-bottom: 0.75rem; }
.pb-4 { padding-bottom: 1rem; }
.pb-5 { padding-bottom: 1.25rem; }
.pb-6 { padding-bottom: 1.5rem; }
.pb-8 { padding-bottom: 2rem; }
.pb-10 { padding-bottom: 2.5rem; }

.pl-0 { padding-left: 0; }
.pl-1 { padding-left: 0.25rem; }
.pl-2 { padding-left: 0.5rem; }
.pl-3 { padding-left: 0.75rem; }
.pl-4 { padding-left: 1rem; }
.pl-5 { padding-left: 1.25rem; }
.pl-6 { padding-left: 1.5rem; }
.pl-8 { padding-left: 2rem; }

/* Margin - All Sides */
.m-0 { margin: 0; }
.m-1 { margin: 0.25rem; }
.m-2 { margin: 0.5rem; }
.m-3 { margin: 0.75rem; }
.m-4 { margin: 1rem; }
.m-5 { margin: 1.25rem; }
.m-6 { margin: 1.5rem; }
.m-8 { margin: 2rem; }
.m-auto { margin: auto; }

/* Margin - X Axis */
.mx-0 { margin-left: 0; margin-right: 0; }
.mx-1 { margin-left: 0.25rem; margin-right: 0.25rem; }
.mx-2 { margin-left: 0.5rem; margin-right: 0.5rem; }
.mx-3 { margin-left: 0.75rem; margin-right: 0.75rem; }
.mx-4 { margin-left: 1rem; margin-right: 1rem; }
.mx-5 { margin-left: 1.25rem; margin-right: 1.25rem; }
.mx-6 { margin-left: 1.5rem; margin-right: 1.5rem; }
.mx-8 { margin-left: 2rem; margin-right: 2rem; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* Margin - Y Axis */
.my-0 { margin-top: 0; margin-bottom: 0; }
.my-1 { margin-top: 0.25rem; margin-bottom: 0.25rem; }
.my-2 { margin-top: 0.5rem; margin-bottom: 0.5rem; }
.my-3 { margin-top: 0.75rem; margin-bottom: 0.75rem; }
.my-4 { margin-top: 1rem; margin-bottom: 1rem; }
.my-5 { margin-top: 1.25rem; margin-bottom: 1.25rem; }
.my-6 { margin-top: 1.5rem; margin-bottom: 1.5rem; }
.my-8 { margin-top: 2rem; margin-bottom: 2rem; }

/* Margin - Individual Sides */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-5 { margin-top: 1.25rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.mt-10 { margin-top: 2.5rem; }

.mr-0 { margin-right: 0; }
.mr-1 { margin-right: 0.25rem; }
.mr-2 { margin-right: 0.5rem; }
.mr-3 { margin-right: 0.75rem; }
.mr-4 { margin-right: 1rem; }
.mr-5 { margin-right: 1.25rem; }
.mr-6 { margin-right: 1.5rem; }
.mr-8 { margin-right: 2rem; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-5 { margin-bottom: 1.25rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-10 { margin-bottom: 2.5rem; }

.ml-0 { margin-left: 0; }
.ml-1 { margin-left: 0.25rem; }
.ml-2 { margin-left: 0.5rem; }
.ml-3 { margin-left: 0.75rem; }
.ml-4 { margin-left: 1rem; }
.ml-5 { margin-left: 1.25rem; }
.ml-6 { margin-left: 1.5rem; }
.ml-8 { margin-left: 2rem; }

/* Negative Margins (for overlaps) */
.-mt-1 { margin-top: -0.25rem; }
.-mt-2 { margin-top: -0.5rem; }
.-mb-1 { margin-bottom: -0.25rem; }
.-mb-2 { margin-bottom: -0.5rem; }

/* Gap (for flexbox/grid) */
.gap-0 { gap: 0; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-5 { gap: 1.25rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }

/* =============================================================================
   FLEXBOX UTILITIES
   ============================================================================= */

.flex { display: flex; }
.inline-flex { display: inline-flex; }

/* Flex Direction */
.flex-row { flex-direction: row; }
.flex-row-reverse { flex-direction: row-reverse; }
.flex-col { flex-direction: column; }
.flex-col-reverse { flex-direction: column-reverse; }

/* Flex Wrap */
.flex-wrap { flex-wrap: wrap; }
.flex-wrap-reverse { flex-wrap: wrap-reverse; }
.flex-nowrap { flex-wrap: nowrap; }

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

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

/* Align Self */
.self-auto { align-self: auto; }
.self-start { align-self: flex-start; }
.self-end { align-self: flex-end; }
.self-center { align-self: center; }
.self-stretch { align-self: stretch; }

/* Flex Grow/Shrink */
.flex-1 { flex: 1 1 0%; }
.flex-auto { flex: 1 1 auto; }
.flex-initial { flex: 0 1 auto; }
.flex-none { flex: none; }

.flex-grow { flex-grow: 1; }
.flex-grow-0 { flex-grow: 0; }
.flex-shrink { flex-shrink: 1; }
.flex-shrink-0 { flex-shrink: 0; }

/* =============================================================================
   GRID UTILITIES
   ============================================================================= */

.grid { display: grid; }
.inline-grid { display: inline-grid; }

/* Grid Template Columns */
.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)); }
.grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }

/* Grid Template Rows */
.grid-rows-1 { grid-template-rows: repeat(1, minmax(0, 1fr)); }
.grid-rows-2 { grid-template-rows: repeat(2, minmax(0, 1fr)); }
.grid-rows-3 { grid-template-rows: repeat(3, minmax(0, 1fr)); }
.grid-rows-4 { grid-template-rows: repeat(4, minmax(0, 1fr)); }

/* Grid Auto Flow */
.grid-flow-row { grid-auto-flow: row; }
.grid-flow-col { grid-auto-flow: column; }

/* =============================================================================
   SIZING UTILITIES
   ============================================================================= */

/* Width */
.w-auto { width: auto; }
.w-full { width: 100%; }
.w-screen { width: 100vw; }
.w-1\/2 { width: 50%; }
.w-1\/3 { width: 33.333333%; }
.w-2\/3 { width: 66.666667%; }
.w-1\/4 { width: 25%; }
.w-3\/4 { width: 75%; }

/* Max Width */
.max-w-none { max-width: none; }
.max-w-xs { max-width: 20rem; }     /* 320px */
.max-w-sm { max-width: 24rem; }     /* 384px */
.max-w-md { max-width: 28rem; }     /* 448px */
.max-w-lg { max-width: 32rem; }     /* 512px */
.max-w-xl { max-width: 36rem; }     /* 576px */
.max-w-2xl { max-width: 42rem; }    /* 672px */
.max-w-3xl { max-width: 48rem; }    /* 768px */
.max-w-4xl { max-width: 56rem; }    /* 896px */
.max-w-full { max-width: 100%; }

/* Min Width */
.min-w-0 { min-width: 0; }
.min-w-full { min-width: 100%; }

/* Height */
.h-auto { height: auto; }
.h-full { height: 100%; }
.h-screen { height: 100vh; }

/* Max Height */
.max-h-full { max-height: 100%; }
.max-h-screen { max-height: 100vh; }

/* Min Height */
.min-h-0 { min-height: 0; }
.min-h-full { min-height: 100%; }
.min-h-screen { min-height: 100vh; }

/* =============================================================================
   DISPLAY UTILITIES
   ============================================================================= */

.block { display: block; }
.inline-block { display: inline-block; }
.inline { display: inline; }
.hidden { display: none; }

/* =============================================================================
   POSITION UTILITIES
   ============================================================================= */

.static { position: static; }
.fixed { position: fixed; }
.absolute { position: absolute; }
.relative { position: relative; }
.sticky { position: sticky; }

/* Positioning (top/right/bottom/left) */
.inset-0 { top: 0; right: 0; bottom: 0; left: 0; }
.top-0 { top: 0; }
.right-0 { right: 0; }
.bottom-0 { bottom: 0; }
.left-0 { left: 0; }

/* Z-Index */
.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; }
.z-auto { z-index: auto; }

/* =============================================================================
   BORDER UTILITIES
   ============================================================================= */

/* Border Width */
.border { border: 1px solid var(--border-primary); }
.border-0 { border: 0; }
.border-2 { border: 2px solid var(--border-primary); }
.border-t { border-top: 1px solid var(--border-primary); }
.border-r { border-right: 1px solid var(--border-primary); }
.border-b { border-bottom: 1px solid var(--border-primary); }
.border-l { border-left: 1px solid var(--border-primary); }

/* Border Radius */
.rounded-none { border-radius: 0; }
.rounded-sm { border-radius: 0.125rem; }    /* 2px */
.rounded { border-radius: 0.25rem; }        /* 4px */
.rounded-md { border-radius: 0.375rem; }    /* 6px */
.rounded-lg { border-radius: 0.5rem; }      /* 8px */
.rounded-xl { border-radius: 0.75rem; }     /* 12px */
.rounded-2xl { border-radius: 1rem; }       /* 16px */
.rounded-full { border-radius: 9999px; }

/* =============================================================================
   TRANSITION UTILITIES
   ============================================================================= */

.transition-none { transition: none; }
.transition-all { transition: all 0.3s; }
.transition-colors { transition: color 0.3s, background-color 0.3s, border-color 0.3s; }
.transition-opacity { transition: opacity 0.3s; }
.transition-transform { transition: transform 0.3s; }

/* =============================================================================
   OVERFLOW UTILITIES
   ============================================================================= */

.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; }

/* =============================================================================
   OPACITY UTILITIES
   ============================================================================= */

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

/* =============================================================================
   CURSOR UTILITIES
   ============================================================================= */

.cursor-auto { cursor: auto; }
.cursor-pointer { cursor: pointer; }
.cursor-not-allowed { cursor: not-allowed; }
.cursor-move { cursor: move; }

/* =============================================================================
   POINTER EVENTS
   ============================================================================= */

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

/* =============================================================================
   USER SELECT
   ============================================================================= */

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

/* =============================================================================
   VISIBILITY
   ============================================================================= */

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

/* =============================================================================
   OBJECT FIT (for images)
   ============================================================================= */

.object-contain { object-fit: contain; }
.object-cover { object-fit: cover; }
.object-fill { object-fit: fill; }
.object-none { object-fit: none; }

/* =============================================================================
   WHITESPACE
   ============================================================================= */

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

/* =============================================================================
   WORD BREAK
   ============================================================================= */

.break-normal { overflow-wrap: normal; word-break: normal; }
.break-words { overflow-wrap: break-word; }
.break-all { word-break: break-all; }

/* Additional Width/Height Utilities */
.min-w-40 { min-width: 40px; }
.min-w-100 { min-width: 100px; }
.min-w-150 { min-width: 150px; }
.min-w-250 { min-width: 250px; }
.w-150 { width: 150px; }
.h-5 { height: 5px; }
.h-8 { height: 8px; }
.h-20 { height: 20px; }
.h-25 { height: 25px; }
.h-400 { height: 400px; }
.min-h-200 { min-height: 200px; }
.min-h-400 { min-height: 400px; }
.min-h-40 { min-height: 40px; }

/* Grid Template Utilities */
.grid-3col-auto {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
}

.col-span-full {
    grid-column: 1 / -1;
}

/* Border Width Utilities */
.border-l-3 { border-left-width: 3px; }
.border-l-4 { border-left-width: 4px; }

/* Font Utilities */
.font-inherit { font-family: inherit; }
.font-mono { font-family: monospace; }

/* Transition Utilities */
.transition-width {
    transition: width 0.3s ease;
}

/* Display Grid */
.d-grid { display: grid; }
.d-flex { display: flex; }

/* Grid Auto Fill (for responsive grids) */
.grid-auto-fill {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

/* Margin/Padding Edge Aliases (Bootstrap-compatible) */
.me-2 { margin-right: 0.5rem; }
.ms-2 { margin-left: 0.5rem; }
.ms-4 { margin-left: 1rem; }

/* Progress Size Variants */
.progress-sm {
    width: 100px;
}

/* ===========================
   ANIMATIONS & TRANSITIONS
   =========================== */

/* Fade in animation - entrance effect */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn var(--transition-base) ease-out;
}

/* Fade in variants - different directions */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp var(--transition-slow) ease-out;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-down {
    animation: fadeInDown var(--transition-slow) ease-out;
}

/* Pulse animation - subtle attention grabber */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Progress pulse - loading indicator */
@keyframes progressPulse {
    0%, 100% {
        transform: translateX(0);
        opacity: 0.6;
    }
    50% {
        transform: translateX(250%);
        opacity: 1;
    }
}

.progress-pulse {
    animation: progressPulse 1.5s ease-in-out infinite;
}

/* Spin animation - loading spinners */
@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.spin {
    animation: spin 1s linear infinite;
}

/* Bounce animation - playful attention */
@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.bounce {
    animation: bounce 0.6s ease-in-out infinite;
}

/* Shake animation - error feedback */
@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-10px);
    }
    75% {
        transform: translateX(10px);
    }
}

.shake {
    animation: shake 0.4s ease-in-out;
}

/* Slide in from right - sidebar/panel entrance */
@keyframes slideInRight {
    from {
        transform: translateX(100%);
    }
    to {
        transform: translateX(0);
    }
}

.slide-in-right {
    animation: slideInRight var(--transition-slow) ease-out;
}

/* Slide in from left */
@keyframes slideInLeft {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

.slide-in-left {
    animation: slideInLeft var(--transition-slow) ease-out;
}

/* Scale in - modal/popup entrance */
@keyframes scaleIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.scale-in {
    animation: scaleIn var(--transition-fast) ease-out;
}

/* Delayed animations - for sequential reveals */
.delay-1 { animation-delay: 100ms; }
.delay-2 { animation-delay: 200ms; }
.delay-3 { animation-delay: 300ms; }
.delay-4 { animation-delay: 400ms; }
.delay-5 { animation-delay: 500ms; }

/* Animation durations */
.duration-fast { animation-duration: var(--transition-fast); }
.duration-base { animation-duration: var(--transition-base); }
.duration-slow { animation-duration: var(--transition-slow); }

/* Animation fill modes */
.fill-forwards { animation-fill-mode: forwards; }
.fill-backwards { animation-fill-mode: backwards; }
.fill-both { animation-fill-mode: both; }

/* Accessibility - Respect reduced-motion preference */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}