/**
 * Animations & Transitions
 * Version 2.0 - Smooth & Modern Effects
 */

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

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

/* Fade In Up */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Fade In Down */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Fade In Left */
@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Fade In Right */
@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* Bounce In */
@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        transform: scale(1);
    }
}

/* Slide In Up */
@keyframes slideInUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Pulse */
@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

/* Shake */
@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-5px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(5px);
    }
}

/* Rotate In */
@keyframes rotateIn {
    from {
        opacity: 0;
        transform: rotate(-200deg);
    }
    to {
        opacity: 1;
        transform: rotate(0);
    }
}

/* Shimmer (Loading Effect) */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* Gradient Animation */
@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* Float */
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

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

/* ========================================
   ANIMATION CLASSES
   ======================================== */

/* Fade Animations */
.animate-fade-in {
    animation: fadeIn 0.6s ease-out;
}

.animate-fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

.animate-fade-in-down {
    animation: fadeInDown 0.8s ease-out;
}

.animate-fade-in-left {
    animation: fadeInLeft 0.8s ease-out;
}

.animate-fade-in-right {
    animation: fadeInRight 0.8s ease-out;
}

/* Scale Animations */
.animate-scale-in {
    animation: scaleIn 0.5s ease-out;
}

.animate-bounce-in {
    animation: bounceIn 0.8s ease-out;
}

/* Slide Animations */
.animate-slide-in-up {
    animation: slideInUp 0.6s ease-out;
}

/* Continuous Animations */
.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

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

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

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

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

.scroll-reveal-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.scroll-reveal-left.revealed {
    opacity: 1;
    transform: translateX(0);
}

.scroll-reveal-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.scroll-reveal-right.revealed {
    opacity: 1;
    transform: translateX(0);
}

.scroll-reveal-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.scroll-reveal-scale.revealed {
    opacity: 1;
    transform: scale(1);
}

/* ========================================
   HOVER EFFECTS
   ======================================== */

/* Card Hover */
.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

/* Image Zoom */
.hover-zoom {
    overflow: hidden;
}

.hover-zoom img {
    transition: transform 0.5s ease;
}

.hover-zoom:hover img {
    transform: scale(1.1);
}

/* Glow Effect */
.hover-glow {
    transition: box-shadow 0.3s ease;
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(0, 123, 255, 0.5);
}

/* Shine Effect */
.hover-shine {
    position: relative;
    overflow: hidden;
}

.hover-shine::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    transition: left 0.5s ease;
}

.hover-shine:hover::before {
    left: 100%;
}

/* Underline Effect */
.hover-underline {
    position: relative;
    text-decoration: none;
}

.hover-underline::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color, #007bff);
    transition: width 0.3s ease;
}

.hover-underline:hover::after {
    width: 100%;
}

/* Button Ripple Effect */
.btn-ripple {
    position: relative;
    overflow: hidden;
}

.btn-ripple::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-ripple:active::after {
    width: 300px;
    height: 300px;
}

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

/* Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-top-color: var(--primary-color, #007bff);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.spinner-sm {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

.spinner-lg {
    width: 60px;
    height: 60px;
    border-width: 6px;
}

/* Dots Loading */
.loading-dots {
    display: inline-flex;
    gap: 8px;
}

.loading-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--primary-color, #007bff);
    animation: pulse 1.4s ease-in-out infinite;
}

.loading-dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.loading-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(
        90deg,
        #f0f0f0 25%,
        #e0e0e0 50%,
        #f0f0f0 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 4px;
}

.skeleton-text {
    height: 16px;
    margin-bottom: 8px;
}

.skeleton-title {
    height: 24px;
    width: 60%;
    margin-bottom: 12px;
}

.skeleton-image {
    height: 200px;
    width: 100%;
}

/* ========================================
   PAGE TRANSITIONS
   ======================================== */

/* Page Load Animation */
.page-enter {
    animation: fadeInUp 0.6s ease-out;
}

/* Section Transitions */
.section-transition {
    transition: all 0.5s ease;
}

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

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

/* Navbar Slide Down */
.navbar-slide-down {
    animation: fadeInDown 0.5s ease-out;
}

/* Navbar Link Hover */
.navbar-nav .nav-link {
    position: relative;
    transition: color 0.3s ease;
}

.navbar-nav .nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--primary-color, #007bff);
    transition: width 0.3s ease, left 0.3s ease;
}

.navbar-nav .nav-link:hover::before,
.navbar-nav .nav-link.active::before {
    width: 100%;
    left: 0;
}

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

/* Card Entrance */
.card-animate {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease-out forwards;
}

.card-animate:nth-child(1) { animation-delay: 0.1s; }
.card-animate:nth-child(2) { animation-delay: 0.2s; }
.card-animate:nth-child(3) { animation-delay: 0.3s; }
.card-animate:nth-child(4) { animation-delay: 0.4s; }
.card-animate:nth-child(5) { animation-delay: 0.5s; }
.card-animate:nth-child(6) { animation-delay: 0.6s; }

/* Card Flip */
.card-flip {
    perspective: 1000px;
}

.card-flip-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.card-flip:hover .card-flip-inner {
    transform: rotateY(180deg);
}

.card-flip-front,
.card-flip-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
}

.card-flip-back {
    transform: rotateY(180deg);
}

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

/* Button Bounce */
.btn-bounce:hover {
    animation: pulse 0.5s ease;
}

/* Button Slide */
.btn-slide {
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    transition: left 0.3s ease;
    z-index: -1;
}

.btn-slide:hover::before {
    left: 0;
}

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

/* Input Focus */
.form-control {
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color, #007bff);
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

/* Label Float */
.form-floating label {
    transition: all 0.3s ease;
}

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

/* Modal Fade In */
.modal.fade .modal-dialog {
    transition: transform 0.3s ease-out;
    transform: scale(0.9);
}

.modal.show .modal-dialog {
    transform: scale(1);
}

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

/* Gallery Item Hover */
.gallery-item {
    position: relative;
    overflow: hidden;
}

.gallery-item img {
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.15);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

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

/* Social Icons */
.social-icons a {
    transition: all 0.3s ease;
}

.social-icons a:hover {
    transform: translateY(-3px) scale(1.1);
}

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

/* Transition Speeds */
.transition-fast { transition: all 0.15s ease; }
.transition-normal { transition: all 0.3s ease; }
.transition-slow { transition: all 0.5s ease; }

/* Delays */
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }

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

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ========================================
   PERFORMANCE OPTIMIZATIONS
   ======================================== */

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

/* Smooth Rendering */
.smooth-render {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}