/* Animaciones y transiciones */

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

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

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

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Header transition */
.header {
    transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

/* Button animations */
.btn {
    transition: all var(--transition-fast);
}

.btn:hover {
    transform: translateY(-2px);
}

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

/* Card hover effects */
.category-card,
.comparative-card,
.article-card {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.category-card:hover,
.comparative-card:hover,
.article-card:hover {
    transform: translateY(-6px);
}

/* Reveal animation - applied via JS */
.reveal-element {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

/* Smooth scroll reveal for staggered elements */
.reveal-element.delay-1 {
    transition-delay: 100ms;
}

.reveal-element.delay-2 {
    transition-delay: 200ms;
}

.reveal-element.delay-3 {
    transition-delay: 300ms;
}

.reveal-element.delay-4 {
    transition-delay: 400ms;
}

/* Navbar toggle animation */
.nav__toggle {
    transition: transform var(--transition-fast);
}

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

.nav__toggle span {
    transition: all var(--transition-fast);
}

.nav__toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.nav__toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Category card icon animation */
.category-card__icon {
    transition: transform var(--transition-fast);
}

.category-card:hover .category-card__icon {
    transform: scale(1.1);
}

/* Image hover zoom effect */
.comparative-card__image,
.article-card__image {
    overflow: hidden;
}

.comparative-card__image svg,
.article-card__image svg {
    transition: transform var(--transition-slow);
}

.comparative-card:hover .comparative-card__image svg,
.article-card:hover .article-card__image svg {
    transform: scale(1.05);
}

/* Toast slide animation */
.toast {
    animation: slideInRight 0.4s ease forwards;
}

.toast.hide {
    animation: fadeOut 0.3s ease forwards;
}

/* Underline animation for links */
.nav__link,
.category-card__link,
.footer__column a {
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

.nav__link:hover::after {
    width: 100%;
}

/* Trust icon animation */
.trust__icon {
    transition: transform var(--transition-base);
}

.trust__item:hover .trust__icon {
    transform: scale(1.1);
}

/* Footer social icon rotation */
.social-link {
    transition: all var(--transition-fast);
}

.social-link:hover {
    transform: translateY(-3px);
}

/* Focus states for accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Loading skeleton animation (placeholder for future use) */
@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

.skeleton {
    background: linear-gradient(90deg, #e0d9d2 25%, #f0ebe6 50%, #e0d9d2 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

/* Smooth height transitions for accordions or mobile menu */
.nav__menu {
    transition: transform var(--transition-base), opacity var(--transition-base);
}

/* Micro-interaction: button ripple effect (CSS only) */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
}

.btn:active::after {
    width: 200px;
    height: 200px;
    transition: 0s;
}

/* Hover underline animation for section titles */
.section-title {
    position: relative;
    display: inline-block;
}

/* Not used in current design but available for future enhancement */

/* Smooth color transitions */
.category-card,
.comparative-card,
.article-card,
.testimonial {
    background-color: var(--color-bg-secondary);
    transition: background-color var(--transition-fast);
}

/* Prevent animation on page load for elements that should appear immediately */
.no-animation {
    transition: none !important;
    animation: none !important;
}

/* Print styles */
@media print {
    .header,
    .newsletter,
    .final-cta,
    .toast {
        display: none;
    }

    body {
        background-color: white;
        color: black;
    }

    section {
        page-break-inside: avoid;
    }
}