html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
}

/* Loading overlay para procesamiento de archivos grandes */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 9999;
    justify-content: center;
    align-items: center;
}

.loading-overlay.active {
    display: flex;
}

.loading-content {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    min-width: 300px;
}

.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #5499C7;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

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

.progress-bar-container {
    width: 100%;
    height: 25px;
    background-color: #f0f0f0;
    border-radius: 12px;
    overflow: hidden;
    margin: 20px 0 10px;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #5499C7, #2980B9);
    width: 0%;
    transition: width 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 12px;
}

.loading-text {
    color: #333;
    margin-top: 10px;
    font-size: 14px;
}

.file-size-info {
    color: #666;
    font-size: 12px;
    margin-top: 5px;
}