/* Loader Universal - Laboratório São Bento */

/* Overlay que cobre toda a página */
.universal-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    backdrop-filter: blur(2px);
    transition: opacity 0.3s ease-out, visibility 0.3s ease-out;
}

/* Estado oculto do loader */
.universal-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

/* Container do spinner */
.loader-spinner {
    width: 50px;
    height: 50px;
    position: relative;
}

/* Spinner principal */
.loader-spinner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 3px solid rgba(84, 207, 170, 0.2);
    border-top: 3px solid #54CFAA;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Animação de rotação */
@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* Variação com pulso para maior elegância */
.loader-spinner::after {
    content: '';
    position: absolute;
    top: 6px;
    left: 6px;
    width: calc(100% - 12px);
    height: calc(100% - 12px);
    border: 2px solid transparent;
    border-top: 2px solid rgba(84, 207, 170, 0.6);
    border-radius: 50%;
    animation: spin 1.5s linear infinite reverse;
}

/* Animação de entrada suave */
.universal-loader.show {
    animation: fadeIn 0.3s ease-out;
}

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

/* Responsividade */
@media (max-width: 768px) {
    .loader-spinner {
        width: 40px;
        height: 40px;
    }
}

/* Modo escuro (opcional) */
@media (prefers-color-scheme: dark) {
    .universal-loader {
        background-color: rgba(17, 24, 39, 0.95);
    }
}