body {
    opacity: 0;
    transition: opacity 0.3s ease;
}
body.loaded {
    opacity: 1;
}
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: #1e6fa8;
    color: white;
    padding: 0.5rem 1rem;
    text-decoration: none;
    z-index: 100;
}
.skip-link:focus {
    top: 0;
}

/* Loading Skeletons e Empty States */
.loading-skeleton {
    background: linear-gradient(90deg, rgba(255,255,255,0.1) 25%, rgba(255,255,255,0.2) 50%, rgba(255,255,255,0.1) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: 4px;
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.testimonial-skeleton {
    opacity: 0.6;
}

.testimonial-skeleton .skeleton-rating,
.testimonial-skeleton .skeleton-text,
.testimonial-skeleton .skeleton-author {
    height: 1rem;
    background: rgba(255,255,255,0.1);
    border-radius: 4px;
    margin-bottom: 0.75rem;
}

.testimonial-skeleton .skeleton-rating {
    width: 120px;
}

.testimonial-skeleton .skeleton-text {
    width: 100%;
}

.testimonial-skeleton .skeleton-text.short {
    width: 70%;
}

.testimonial-skeleton .skeleton-author {
    width: 150px;
    height: 0.875rem;
}

.testimonials-empty-state,
.testimonials-error-state {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-secondary);
}

.testimonials-empty-state p,
.testimonials-error-state p {
    margin-bottom: 0.5rem;
}

.empty-state-subtitle {
    font-size: 0.875rem;
    opacity: 0.7;
}

.retry-button {
    margin-top: 1rem;
    padding: 0.75rem 1.5rem;
    background: var(--cyan-bright);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: transform 0.2s ease, background-color 0.2s ease;
}

.retry-button:hover {
    transform: translateY(-2px);
    background: #3498db;
}

.error-message {
    display: none;
    color: #ef4444;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.error-message.show {
    display: block;
}

.form-group input:invalid:not(:placeholder-shown),
.form-group textarea:invalid:not(:placeholder-shown) {
    border-color: #ef4444;
}

.form-group input:valid:not(:placeholder-shown),
.form-group textarea:valid:not(:placeholder-shown) {
    border-color: #10b981;
}

.icon-svg {
    width: 1em;
    height: 1em;
    vertical-align: middle;
    display: inline-block;
}

.menu-toggle .icon-svg {
    width: 24px;
    height: 24px;
}

.stat-icon .icon-svg {
    width: 1em;
    height: 1em;
}

[data-theme="dark"] .icon-svg {
    filter: invert(1);
}