/* ==========================================
   LUNAVIE - ANIMATION STYLESHEET
   Premium micro-interactions & motion
   ========================================== */

/* === SCROLL REVEAL ANIMATIONS === */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Staggered delays for sequential reveals */
.reveal:nth-child(1) { transition-delay: 0s; }
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal:nth-child(4) { transition-delay: 0.3s; }
.reveal:nth-child(5) { transition-delay: 0.4s; }

/* === STAGGERED TEXT ANIMATION === */
.stagger-text span {
    display: block;
    opacity: 0;
    transform: translateY(20px);
    animation: textReveal 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.stagger-text span:nth-child(1) {
    animation-delay: 0.1s;
}

.stagger-text span:nth-child(2) {
    animation-delay: 0.3s;
}

@keyframes textReveal {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* === BUTTON ANIMATIONS === */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

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

/* Add to cart pulse feedback */
@keyframes cartPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

.cart-icon.pulse {
    animation: cartPulse 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Button press effect */
.btn:active {
    transform: scale(0.97);
}

/* === PRODUCT CARD ANIMATIONS === */
.product-card {
    position: relative;
}

.product-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.16);
    transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.product-card:hover::after {
    opacity: 1;
}

/* Product image zoom */
.product-image-wrapper {
    overflow: hidden;
}

.product-image {
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.product-card:hover .product-image {
    transform: scale(1.08);
}

/* === NAVIGATION ANIMATIONS === */
.nav-menu a {
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-accent, #C9A961);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

/* Mobile menu slide-in */
@keyframes slideInRight {
    from {
        transform: translateX(100%);
    }
    to {
        transform: translateX(0);
    }
}

.nav-menu.active {
    animation: slideInRight 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Mobile toggle animation */
.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* === CART ANIMATIONS === */
.cart-item {
    animation: slideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Remove item animation */
.cart-item.removing {
    animation: slideOut 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes slideOut {
    to {
        opacity: 0;
        transform: translateX(20px);
    }
}

/* === FORM INPUT ANIMATIONS === */
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    transform: scale(1.01);
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

/* === SMOOTH SCROLL BEHAVIOR === */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

/* === HOVER LIFT EFFECT === */
.hover-lift {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

/* === FADE IN ANIMATIONS === */
.fade-in {
    animation: fadeIn 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* === NOTIFICATION ANIMATIONS === */
@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.notification {
    animation: slideDown 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === QUANTITY BUTTON FEEDBACK === */
.quantity-btn:active {
    transform: scale(0.9);
}

/* === LINK ARROW ANIMATION === */
.link-arrow::after {
    content: '→';
    display: inline-block;
    margin-left: 0.5rem;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.link-arrow:hover::after {
    transform: translateX(4px);
}

/* === SKELETON LOADING === */
@keyframes shimmer {
    0% {
        background-position: -468px 0;
    }
    100% {
        background-position: 468px 0;
    }
}

.skeleton {
    background: linear-gradient(to right, #f0f0f0 8%, #e0e0e0 18%, #f0f0f0 33%);
    background-size: 800px 100px;
    animation: shimmer 1.2s ease-in-out infinite;
}

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