/**
 * OCR Application - Custom Styles
 * 
 * Custom CSS for enhancing the user interface beyond Bootstrap
 * defaults.
 * 
 * @package OCR_Application
 * @version 1.0.0
 */

/* Root Variables */
:root {
  --primary-color: #0d6efd;
  --success-color: #198754;
  --danger-color: #dc3545;
  --light-grey: #f8f9fa;
  --border-color: #dee2e6;
  --transition-speed: 0.3s;
}


/* General Styles */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, 
    "Helvetica Neue", Arial, sans-serif;
  background-color: #f5f7fa;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}


/* Drop Zone Styles */
.drop-zone {
  border: 3px dashed var(--border-color);
  border-radius: 12px;
  background-color: var(--light-grey);
  transition: all var(--transition-speed) ease;
  cursor: pointer;
}

.drop-zone:hover {
  border-color: var(--primary-color);
  background-color: #e7f1ff;
}

.drop-zone.drag-over {
  border-color: var(--primary-color);
  background-color: #e7f1ff;
  transform: scale(1.02);
  box-shadow: 0 4px 12px rgba(13, 110, 253, 0.2);
}

.drop-zone i {
  display: block;
}


/* Preview Container */
.preview-container {
  position: relative;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  padding: 15px;
  background-color: white;
}

.preview-container img {
  max-height: 400px;
  width: auto;
  margin: 0 auto;
  display: block;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}


/* Card Enhancements */
.card {
  border: none;
  transition: transform var(--transition-speed) ease,
    box-shadow var(--transition-speed) ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1) !important;
}

.card-header {
  border-bottom: none;
  font-weight: 600;
}


/* Textarea Styles */
#extractedText {
  font-family: "Courier New", Courier, monospace;
  font-size: 14px;
  line-height: 1.6;
  resize: vertical;
  border: 2px solid var(--border-color);
  border-radius: 6px;
  padding: 12px;
}

#extractedText:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
  outline: none;
}


/* Button Enhancements */
.btn {
  font-weight: 500;
  transition: all var(--transition-speed) ease;
  border-radius: 6px;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.btn:active {
  transform: translateY(0);
}

.btn-lg {
  padding: 12px 24px;
  font-size: 1.1rem;
}


/* Loading Indicator */
#loadingIndicator {
  padding: 30px 0;
}

.spinner-border {
  width: 3rem;
  height: 3rem;
  border-width: 0.3em;
}


/* Toast Message */
.toast-message {
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}


/* Alert Enhancements */
.alert {
  border-radius: 8px;
  border: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}


/* Badge Styles */
.badge {
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 6px;
}


/* Footer */
footer {
  border-top: 1px solid var(--border-color);
  margin-top: auto;
}


/* Responsive Adjustments */
@media (max-width: 768px) {
  .drop-zone {
    padding: 30px 20px !important;
  }

  .drop-zone i {
    font-size: 2rem !important;
  }

  .preview-container img {
    max-height: 300px;
  }

  #extractedText {
    font-size: 13px;
  }

  .btn-lg {
    font-size: 1rem;
    padding: 10px 20px;
  }
}


/* Accessibility */
.btn:focus,
input:focus,
textarea:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}


/* Utility Classes */
.text-centre {
  text-align: centre !important;
}

.justify-content-centre {
  justify-content: centre !important;
}


/* Print Styles */
@media print {
  .navbar,
  .card-header,
  .btn,
  footer {
    display: none;
  }

  #extractedText {
    border: 1px solid #000;
    font-size: 12pt;
  }
}