/* ==========================================
   LOADING OVERLAY - SISTEMA GENÉRICO
   ========================================== */

/* Overlay principal */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(3px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Estado ativo */
.loading-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Container do loading */
.loading-container {
    background: var(--bg-secondary, #ffffff);
    border-radius: 12px;
    padding: 2.5rem;
    text-align: center;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    border: 1px solid var(--border-color, #e9ecef);
    min-width: 280px;
    max-width: 400px;
    transform: translateY(-20px) scale(0.95);
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.loading-overlay.active .loading-container {
    transform: translateY(0) scale(1);
}

/* Spinner animado - CORRIGIDO PARA CENTRALIZAÇÃO E TEMA DARK */
.loading-spinner {
    width: 48px;
    height: 48px;
    margin: 0 auto 1.5rem;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loading-spinner::before,
.loading-spinner::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 3px solid transparent;
    border-top: 3px solid var(--primary-color, #0d6efd);
    border-right: 3px solid var(--primary-color, #0d6efd);
    animation: loading-spin 1.2s linear infinite;
}

.loading-spinner::after {
    border-top: 3px solid transparent;
    border-right: 3px solid transparent;
    border-bottom: 3px solid var(--primary-color, #0d6efd);
    border-left: 3px solid var(--primary-color, #0d6efd);
    animation-direction: reverse;
    animation-duration: 1.5s;
}

@keyframes loading-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Texto do loading */
.loading-text {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary, #212529);
    margin: 0;
    margin-bottom: 0.5rem;
}

.loading-description {
    font-size: 0.875rem;
    color: var(--text-secondary, #6c757d);
    margin: 0;
    line-height: 1.4;
}

/* Tema Dark - CORRIGIDO */
[data-theme="dark"] .loading-overlay {
    background: rgba(0, 0, 0, 0.8);
}

[data-theme="dark"] .loading-container {
    background: var(--bg-secondary, #1a1d23);
    border-color: var(--border-color, #2d3238);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .loading-text {
    color: var(--text-primary, #e9ecef);
}

[data-theme="dark"] .loading-description {
    color: var(--text-secondary, #adb5bd);
}

/* CORREÇÃO DO TEMA DARK - Spinner ::before */
[data-theme="dark"] .loading-spinner::before {
    border-top-color: var(--primary-color, #74b9ff);
    border-right-color: var(--primary-color, #74b9ff);
}

/* CORREÇÃO DO TEMA DARK - Spinner ::after */
[data-theme="dark"] .loading-spinner::after {
    border-bottom-color: var(--primary-color, #74b9ff);
    border-left-color: var(--primary-color, #74b9ff);
}

/* Variantes de tamanho */
.loading-overlay.small .loading-container {
    padding: 1.5rem;
    min-width: 200px;
}

.loading-overlay.small .loading-spinner {
    width: 32px;
    height: 32px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loading-overlay.small .loading-spinner::before,
.loading-overlay.small .loading-spinner::after {
    border-width: 2px;
}

.loading-overlay.small .loading-text {
    font-size: 1rem;
}

.loading-overlay.large .loading-container {
    padding: 3rem;
    min-width: 320px;
}

.loading-overlay.large .loading-spinner {
    width: 64px;
    height: 64px;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loading-overlay.large .loading-spinner::before,
.loading-overlay.large .loading-spinner::after {
    border-width: 4px;
}

.loading-overlay.large .loading-text {
    font-size: 1.25rem;
}

.loading-overlay.large .loading-description {
    font-size: 1rem;
}

/* Animação de entrada suave */
.loading-overlay {
    animation: fadeIn 0.3s ease-out;
}

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

.loading-overlay.active .loading-container {
    animation: slideIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes slideIn {
    from {
        transform: translateY(-20px) scale(0.95);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

/* Responsividade */
@media (max-width: 768px) {
    .loading-container {
        margin: 1rem;
        padding: 2rem;
        min-width: calc(100vw - 2rem);
        max-width: calc(100vw - 2rem);
    }

    .loading-spinner {
        width: 40px;
        height: 40px;
        margin-bottom: 1.25rem;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .loading-text {
        font-size: 1rem;
    }

    .loading-description {
        font-size: 0.8rem;
    }
}

/* Desabilitar interações na página durante loading */
.loading-overlay.active ~ * {
    pointer-events: none !important;
}

/* Permitir scroll apenas no overlay para mobile */
@media (max-width: 768px) {
    .loading-overlay.active {
        overflow-y: auto;
    }

    .loading-container {
        margin: 2rem 1rem;
        align-self: flex-start;
    }
}