/* ================================
   Global Loading Spinner Overlay
   ================================ */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(255,255,255,0.3);
    backdrop-filter: blur(2px);
    z-index: 9999;
    display: none;
    justify-content: center;
    align-items: center;
}

.loader-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.loader-spinner {
    width: 60px;
    height: 60px;
    border: 6px solid rgba(0,0,0,0.1);
    border-top-color: #4A90E2;
    border-radius: 50%;
    animation: spin .8s linear infinite;
}

.loader-text {
    margin-top: 12px;
    color: #333;
    font-weight: 500;
    display: none;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ================================
   Linear Progress Bar
   ================================ */
.progress-container {
    width: 100%;
    background: #e6e6e6;
    border-radius: 8px;
    height: 10px;
    overflow: hidden;
    display: none;
    margin-top: 10px;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #4A90E2, #6FC3DF);
    transition: width .3s ease;
}