/* Base styles */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(#bbbbbb, white);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    backdrop-filter: blur(2px);
}

.loading-container {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    min-width: 200px;
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.circular-progress {
    position: relative;
    width: 50px;
    height: 50px;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #1d2a80;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-text {
    color: #333;
    font-size: 16px;
    font-weight: 500;
    text-align: center;
    margin: 0;
}

/* Variações de tamanho */
.loading-overlay.small .circular-progress {
    width: 30px;
    height: 30px;
}

.loading-overlay.small .spinner {
    width: 30px;
    height: 30px;
    border-width: 3px;
}

.loading-overlay.small .loading-container {
    padding: 20px;
    gap: 15px;
    min-width: 150px;
}

.loading-overlay.small .loading-text {
    font-size: 14px;
}

.loading-overlay.large .circular-progress {
    width: 70px;
    height: 70px;
}

.loading-overlay.large .spinner {
    width: 70px;
    height: 70px;
    border-width: 5px;
}

.loading-overlay.large .loading-container {
    padding: 40px;
    gap: 25px;
    min-width: 250px;
}

.loading-overlay.large .loading-text {
    font-size: 18px;
}

/* Variação inline (para uso dentro de elementos) */
.loading-overlay.inline {
    position: relative;
    background: transparent;
    backdrop-filter: none;
    height: auto;
    width: auto;
    z-index: auto;
}

.loading-overlay.inline .loading-container {
    background: linear-gradient(#bbbbbb, white);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    padding: 20px;
    min-width: auto;
    border: 1px solid #e0e0e0;
}

/* Cores do spinner */
.loading-overlay.primary .spinner {
    border-top-color: #1d2a80;
}

.loading-overlay.success .spinner {
    border-top-color: #28a745;
}

.loading-overlay.warning .spinner {
    border-top-color: #ffc107;
}

.loading-overlay.danger .spinner {
    border-top-color: #dc3545;
}

.loading-overlay.info .spinner {
    border-top-color: #17a2b8;
}

/* Loading para botões */
.btn-loading {
    position: relative;
    pointer-events: none;
}

.btn-loading .btn-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin-right: 8px;
}

/* Loading para inputs */
.input-loading {
    position: relative;
}

.input-loading::after {
    content: '';
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #1d2a80;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Responsivo */
@media (max-width: 480px) {
    .loading-container {
        margin: 20px;
        padding: 25px;
    }
    
    .loading-text {
        font-size: 15px;
    }
    
    .loading-overlay.small .loading-container {
        padding: 15px;
        margin: 15px;
    }
}