/**
 * Animations & Transitions
 * Smooth animations for better UX
 */

/* ============================================
   FADE ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ============================================
   SCALE ANIMATIONS
   ============================================ */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* ============================================
   SLIDE ANIMATIONS
   ============================================ */
@keyframes slideInLeft {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
    }
    to {
        transform: translateX(0);
    }
}

@keyframes slideDown {
    from {
        max-height: 0;
        opacity: 0;
    }
    to {
        max-height: 500px;
        opacity: 1;
    }
}

/* ============================================
   ROTATE ANIMATIONS
   ============================================ */
@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

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

/* ============================================
   LOADING ANIMATIONS
   ============================================ */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.skeleton {
    animation: shimmer 2s infinite;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 1000px 100%;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.fade-in-down {
    animation: fadeInDown 0.6s ease-out;
}

.fade-in-left {
    animation: fadeInLeft 0.6s ease-out;
}

.fade-in-right {
    animation: fadeInRight 0.6s ease-out;
}

.scale-in {
    animation: scaleIn 0.3s ease-out;
}

.pulse {
    animation: pulse 2s infinite;
}

.bounce {
    animation: bounce 1s infinite;
}

.slide-in-left {
    animation: slideInLeft 0.4s ease-out;
}

.slide-in-right {
    animation: slideInRight 0.4s ease-out;
}

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

.shake {
    animation: shake 0.5s;
}

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

/* ============================================
   TRANSITION UTILITIES
   ============================================ */
.transition-all {
    transition: all 0.3s ease;
}

.transition-fast {
    transition: all 0.15s ease;
}

.transition-slow {
    transition: all 0.5s ease;
}

/* ============================================
   HOVER EFFECTS
   ============================================ */
.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.hover-scale {
    transition: transform 0.3s ease;
}

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

.hover-brightness {
    transition: filter 0.3s ease;
}

.hover-brightness:hover {
    filter: brightness(1.1);
}

.hover-glow {
    transition: box-shadow 0.3s ease;
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.5);
}

/* ============================================
   CARD ANIMATIONS
   ============================================ */
.card {
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

.card-image {
    overflow: hidden;
}

.card-image img {
    transition: transform 0.5s ease;
}

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

/* ============================================
   BUTTON ANIMATIONS
   ============================================ */
.btn {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    transition: background 0.3s ease, transform 0.2s ease;
}

.btn-primary:hover {
    background: #2563eb;
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: translateY(0);
}

/* ============================================
   MODAL ANIMATIONS
   ============================================ */
.modal {
    animation: fadeIn 0.3s ease-out;
}

.modal-content {
    animation: scaleIn 0.3s ease-out;
}

.modal.closing {
    animation: fadeIn 0.3s ease-out reverse;
}

.modal.closing .modal-content {
    animation: scaleIn 0.3s ease-out reverse;
}

/* ============================================
   NOTIFICATION ANIMATIONS
   ============================================ */
.notification {
    animation: slideInRight 0.4s ease-out;
}

.notification.removing {
    animation: fadeInRight 0.3s ease-out reverse;
}

/* ============================================
   PROGRESS BAR ANIMATIONS
   ============================================ */
@keyframes progressFill {
    from {
        width: 0;
    }
}

.progress-bar {
    animation: progressFill 1s ease-out;
}

@keyframes progressPulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.progress-bar-animated {
    animation: progressPulse 1.5s infinite;
}

/* ============================================
   STAGGERED ANIMATIONS
   ============================================ */
.stagger-item {
    opacity: 0;
    animation: fadeInUp 0.6s ease-out forwards;
}

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

/* ============================================
   PAGE TRANSITIONS
   ============================================ */
.page-enter {
    animation: fadeInUp 0.5s ease-out;
}

.page-exit {
    animation: fadeIn 0.3s ease-out reverse;
}

/* ============================================
   TOOLTIP ANIMATIONS
   ============================================ */
.tooltip {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: none;
}

.tooltip.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

/* ============================================
   ACCORDION ANIMATIONS
   ============================================ */
.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.accordion-content.active {
    max-height: 1000px;
}

.accordion-icon {
    transition: transform 0.3s ease;
}

.accordion-content.active .accordion-icon {
    transform: rotate(180deg);
}

/* ============================================
   LOADING STATES
   ============================================ */
.loading-dots::after {
    content: '';
    animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
    0%, 20% {
        content: '';
    }
    40% {
        content: '.';
    }
    60% {
        content: '..';
    }
    80%, 100% {
        content: '...';
    }
}

.spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid #3b82f6;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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