/* =========================================
   UTILITIES.CSS - Utility Classes & Animations
   ========================================= */

/* ===== ANIMATIONS ===== */

/* Keyframes */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideLeft {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideRight {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ===== SCROLL REVEAL ===== */

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s var(--ease-smooth),
                transform 0.8s var(--ease-smooth);
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered Animation Delays */
.reveal:nth-child(1) {
    transition-delay: 0.1s;
}

.reveal:nth-child(2) {
    transition-delay: 0.2s;
}

.reveal:nth-child(3) {
    transition-delay: 0.3s;
}

.reveal:nth-child(4) {
    transition-delay: 0.4s;
}

.reveal:nth-child(5) {
    transition-delay: 0.5s;
}

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

.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

.flex {
    display: flex;
}

.grid {
    display: grid;
}

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

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

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.flex-col {
    flex-direction: column;
}

.flex-wrap {
    flex-wrap: wrap;
}

.items-center {
    align-items: center;
}

.items-start {
    align-items: flex-start;
}

.items-end {
    align-items: flex-end;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.justify-end {
    justify-content: flex-end;
}

/* ===== SPACING UTILITIES ===== */

/* Margin */
.m-0 { margin: 0; }
.mt-0 { margin-top: 0; }
.mr-0 { margin-right: 0; }
.mb-0 { margin-bottom: 0; }
.ml-0 { margin-left: 0; }

.m-auto { margin: auto; }
.mx-auto { margin-left: auto; margin-right: auto; }
.my-auto { margin-top: auto; margin-bottom: auto; }

/* Padding */
.p-0 { padding: 0; }
.pt-0 { padding-top: 0; }
.pr-0 { padding-right: 0; }
.pb-0 { padding-bottom: 0; }
.pl-0 { padding-left: 0; }

/* ===== TEXT UTILITIES ===== */

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

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

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

.text-uppercase {
    text-transform: uppercase;
}

.text-lowercase {
    text-transform: lowercase;
}

.text-capitalize {
    text-transform: capitalize;
}

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ===== COLOR UTILITIES ===== */

.text-primary {
    color: var(--text-primary);
}

.text-secondary {
    color: var(--text-secondary);
}

.text-tertiary {
    color: var(--text-tertiary);
}

.text-accent {
    color: var(--accent-blue);
}

.bg-primary {
    background-color: var(--bg-primary);
}

.bg-secondary {
    background-color: var(--bg-secondary);
}

.bg-tertiary {
    background-color: var(--bg-tertiary);
}

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

.relative {
    position: relative;
}

.absolute {
    position: absolute;
}

.fixed {
    position: fixed;
}

.sticky {
    position: sticky;
}

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

.overflow-hidden {
    overflow: hidden;
}

.overflow-auto {
    overflow: auto;
}

.overflow-scroll {
    overflow: scroll;
}

.overflow-x-hidden {
    overflow-x: hidden;
}

.overflow-y-auto {
    overflow-y: auto;
}

/* ===== WIDTH UTILITIES ===== */

.w-full {
    width: 100%;
}

.w-auto {
    width: auto;
}

.w-fit {
    width: fit-content;
}

.max-w-full {
    max-width: 100%;
}

/* ===== HEIGHT UTILITIES ===== */

.h-full {
    height: 100%;
}

.h-screen {
    height: 100vh;
}

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

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

.border {
    border: 1px solid var(--border-color);
}

.border-t {
    border-top: 1px solid var(--border-color);
}

.border-r {
    border-right: 1px solid var(--border-color);
}

.border-b {
    border-bottom: 1px solid var(--border-color);
}

.border-l {
    border-left: 1px solid var(--border-color);
}

.border-none {
    border: none;
}

.rounded {
    border-radius: var(--border-radius-md);
}

.rounded-lg {
    border-radius: var(--border-radius-lg);
}

.rounded-xl {
    border-radius: var(--border-radius-xl);
}

.rounded-full {
    border-radius: var(--border-radius-full);
}

/* ===== SHADOW UTILITIES ===== */

.shadow-sm {
    box-shadow: var(--shadow-sm);
}

.shadow {
    box-shadow: var(--shadow-md);
}

.shadow-lg {
    box-shadow: var(--shadow-lg);
}

.shadow-xl {
    box-shadow: var(--shadow-xl);
}

.shadow-none {
    box-shadow: none;
}

/* ===== 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; }

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

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

.pointer-events-auto {
    pointer-events: auto;
}

.cursor-pointer {
    cursor: pointer;
}

.cursor-not-allowed {
    cursor: not-allowed;
}

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

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

.select-auto {
    user-select: auto;
}

.select-all {
    user-select: all;
}

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

.transition {
    transition: var(--transition-base);
}

.transition-fast {
    transition: var(--transition-fast);
}

.transition-slow {
    transition: var(--transition-slow);
}

.transition-none {
    transition: none;
}

/* ===== TRANSFORM UTILITIES ===== */

.transform {
    transform: translateZ(0);
}

.scale-90 {
    transform: scale(0.9);
}

.scale-95 {
    transform: scale(0.95);
}

.scale-100 {
    transform: scale(1);
}

.scale-105 {
    transform: scale(1.05);
}

.scale-110 {
    transform: scale(1.1);
}

/* ===== ACCESSIBILITY ===== */

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

/* Focus Visible */
.focus-visible:focus-visible {
    outline: 2px solid var(--accent-blue);
    outline-offset: 2px;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--accent-blue);
    color: white;
    padding: var(--space-sm) var(--space-md);
    z-index: var(--z-toast);
    text-decoration: none;
    border-radius: var(--border-radius-md);
}

.skip-link:focus {
    top: var(--space-sm);
}

/* ===== CUSTOM UTILITIES ===== */

/* Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Blur Background */
.blur-bg {
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
}

/* Smooth Scroll */
.smooth-scroll {
    scroll-behavior: smooth;
}

/* No Scrollbar */
.no-scrollbar {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

.no-scrollbar::-webkit-scrollbar {
    display: none;
}

/* Hardware Acceleration */
.gpu {
    transform: translateZ(0);
    will-change: transform;
}

/* ===== RESPONSIVE UTILITIES ===== */

/* Show/Hide on Mobile */
@media (max-width: 767px) {
    .hide-mobile {
        display: none !important;
    }
}

@media (min-width: 768px) {
    .show-mobile {
        display: none !important;
    }
}

/* Show/Hide on Desktop */
@media (max-width: 1023px) {
    .hide-tablet {
        display: none !important;
    }
}

@media (min-width: 1024px) {
    .show-tablet {
        display: none !important;
    }
    
    .hide-desktop {
        display: none !important;
    }
}

/* ===== PRINT UTILITIES ===== */

@media print {
    .no-print {
        display: none !important;
    }
    
    .print-break-before {
        page-break-before: always;
    }
    
    .print-break-after {
        page-break-after: always;
    }
    
    .print-break-inside-avoid {
        page-break-inside: avoid;
    }
}

/* ===== REDUCED MOTION ===== */

@media (prefers-reduced-motion: reduce) {
    .reveal {
        transition: none;
        opacity: 1;
        transform: none;
    }
    
    .transition,
    .transition-fast,
    .transition-slow {
        transition: none;
    }
}