conception-assistant/assets/css/style.css

/* Variables CSS */
:root {
  --primary-color: #2c3e50;
  --secondary-color: #3498db;
  --accent-color: #e74c3c;
  --success-color: #27ae60;
  --warning-color: #f39c12;
  --background-color: #ecf0f1;
  --surface-color: #ffffff;
  --text-color: #2c3e50;
  --text-light: #7f8c8d;
  --border-color: #bdc3c7;
  --shadow: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-hover: 0 4px 8px rgba(0,0,0,0.15);
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

/* Mode sombre */
body.dark-theme {
  --primary-color: #ecf0f1;
  --secondary-color: #3498db;
  --background-color: #1a1a1a;
  --surface-color: #2c2c2c;
  --text-color: #ecf0f1;
  --text-light: #95a5a6;
  --border-color: #34495e;
}

/* Reset et base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--background-color);
  transition: var(--transition);
}

/* Layout principal */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header professionnel */
header {
  background: var(--surface-color);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

header > div {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.2rem;
  max-width: 1400px;
  margin: 0 auto;
}

header h1 {
  color: var(--primary-color);
  font-size: 2.2rem;
  font-weight: 600;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-align: center;
  letter-spacing: -0.5px;
}

header h1::before {
  content: "📝";
  font-size: 2.4rem;
}

/* Panneaux latéraux rétractables */
.side-panel {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-hover);
  z-index: 1000;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(10px);
}

/* Panneau gauche - Configuration */
.left-panel {
  left: -320px;
  width: 320px;
  border-left: none;
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}

.left-panel.open {
  transform: translateY(-50%) translateX(320px);
}

/* Panneau droit - Navigation */
.right-panel {
  right: -320px;
  width: 320px;
  border-right: none;
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}

.right-panel.open {
  transform: translateY(-50%) translateX(-320px);
}

/* Contenu des panneaux */
.panel-content {
  padding: 2rem;
}

.panel-header {
  margin: 0 0 1.5rem 0;
  color: var(--primary-color);
  font-size: 1.2rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 1rem;
}

/* Flèches d'ouverture */
.panel-toggle {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 80px;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--text-color);
  transition: all 0.3s ease;
  box-shadow: var(--shadow);
  z-index: 1001;
}

.left-panel .panel-toggle {
  right: -40px;
  border-left: none;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.right-panel .panel-toggle {
  left: -40px;
  border-right: none;
  border-radius: var(--border-radius) 0 0 var(--border-radius);
}

.panel-toggle:hover {
  background: var(--secondary-color);
  color: white;
  transform: translateY(-50%) scale(1.05);
  box-shadow: var(--shadow-hover);
}

.panel-toggle:active {
  transform: translateY(-50%) scale(0.95);
}

/* Rotation de la flèche selon l'état */
.left-panel .panel-toggle .arrow {
  transition: transform 0.3s ease;
}

.left-panel.open .panel-toggle .arrow {
  transform: rotate(180deg);
}

.right-panel .panel-toggle .arrow {
  transition: transform 0.3s ease;
}

.right-panel.open .panel-toggle .arrow {
  transform: rotate(180deg);
}

/* Styles pour le formulaire de templates */
.template-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.9rem;
  color: var(--text-light);
  font-weight: 500;
}

.form-group select {
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background: var(--surface-color);
  color: var(--text-color);
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
}

.form-group select:hover:not(:disabled) {
  border-color: var(--secondary-color);
}

.form-group select:focus {
  outline: none;
  border-color: var(--secondary-color);
  box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.form-group select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background: var(--background-color);
}


.form-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.form-actions button {
  flex: 1;
  min-width: 120px;
}

/* Styles spécifiques au panneau de navigation */
.nav-section {
  margin-bottom: 2rem;
}

.nav-section h4 {
  margin: 0 0 1rem 0;
  font-size: 0.95rem;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.nav-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.nav-btn {
  width: 100%;
  padding: 1rem 1.5rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background: transparent;
  color: var(--text-color);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.9rem;
  text-align: left;
}

.nav-btn:hover {
  background: var(--background-color);
  border-color: var(--secondary-color);
  color: var(--secondary-color);
  transform: translateX(5px);
}

.nav-btn .icon {
  font-size: 1.2rem;
  width: 24px;
  text-align: center;
}

/* File input dans le panneau */
.panel-file-input {
  width: 100%;
  padding: 1rem 1.5rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background: transparent;
  color: var(--text-color);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.9rem;
  text-align: left;
  overflow: hidden;
}

.panel-file-input:hover {
  background: var(--background-color);
  border-color: var(--warning-color);
  color: var(--warning-color);
  transform: translateX(5px);
}

.panel-file-input .icon {
  font-size: 1.2rem;
  width: 24px;
  text-align: center;
}

/* Animation d'overlay quand les panneaux sont ouverts */
.panel-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.1);
  z-index: 89;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  backdrop-filter: blur(2px);
}

.panel-overlay.active {
  opacity: 1;
  visibility: visible;
}


/* Responsive design */
@media (max-width: 768px) {
  .side-panel {
    width: 280px;
    top: 60%;
  }

  .left-panel {
    left: -280px;
  }

  .left-panel.open {
    transform: translateY(-60%) translateX(280px);
  }

  .right-panel {
    right: -280px;
  }

  .right-panel.open {
    transform: translateY(-60%) translateX(-280px);
  }

  .panel-content {
    padding: 1.5rem;
  }

  .panel-toggle {
    width: 35px;
    height: 70px;
    font-size: 1rem;
  }

  header h1 {
    font-size: 1.8rem;
  }

  header h1::before {
    font-size: 2rem;
  }

  header > div {
    padding: 1.5rem;
  }

  main {
    grid-template-columns: 1fr;
    padding: 1rem;
  }

  /* Sections déjà en mode normal */
}

@media (max-width: 480px) {
  .side-panel {
    width: calc(100vw - 40px);
    left: -100vw;
    right: -100vw;
  }

  .left-panel.open {
    transform: translateY(-60%) translateX(calc(100vw - 20px));
  }

  .right-panel.open {
    transform: translateY(-60%) translateX(calc(-100vw + 20px));
  }
}

/* Boutons */
button, .btn {
  padding: 0.6rem 1.2rem;
  border: none;
  border-radius: 25px;
  background: var(--secondary-color);
  color: white;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

button:hover, .btn:hover {
  background: #2980b9;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  transform: translateY(-2px);
}

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

/* Boutons dans le header */
header button, header .btn {
  background: rgba(255,255,255,0.9);
  color: var(--primary-color);
  border: 1px solid rgba(255,255,255,0.3);
  backdrop-filter: blur(10px);
}

header button:hover, header .btn:hover {
  background: white;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  color: var(--secondary-color);
}

button.secondary {
  background: var(--surface-color);
  color: var(--text-color);
  border: 1px solid var(--border-color);
}

button.secondary:hover {
  background: var(--background-color);
  color: var(--secondary-color);
  border-color: var(--secondary-color);
}

button.danger {
  background: var(--accent-color);
}

button.danger:hover {
  background: #c0392b;
}


button.success {
  background: var(--success-color);
}

button.success:hover {
  background: #229954;
}

/* Input file personnalisé */
.file-input-label {
  padding: 0.6rem 1.2rem;
  border-radius: var(--border-radius);
  background: var(--warning-color);
  color: white;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.file-input-label:hover {
  background: #e67e22;
  box-shadow: var(--shadow-hover);
  transform: translateY(-1px);
}

/* Main content */
main {
  display: grid;
  grid-template-columns: 300px 1fr 350px;
  gap: 2rem;
  padding: 2rem;
  max-width: 1400px;
  margin: 0 auto;
  min-height: calc(100vh - 140px);
}

@media (max-width: 1200px) {
  main {
    grid-template-columns: 250px 1fr;
    gap: 1.5rem;
  }

  #ai-assistant {
    grid-column: 1 / -1;
    margin-top: 2rem;
  }
}

@media (max-width: 768px) {
  main {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 1rem;
  }
}

/* Sections */
section {
  background: var(--surface-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

section h2 {
  background: var(--secondary-color);
  color: white;
  padding: 1rem 1.5rem;
  margin: 0;
  font-size: 1.2rem;
  font-weight: 600;
}

/* Table des matières */
#table-of-contents {
  /* Comportement normal de scroll */
}

#toc-nav {
  padding: 1.5rem;
}

#toc-nav ul {
  list-style: none;
}

#toc-nav li {
  margin-bottom: 0.5rem;
}

#toc-nav a {
  color: var(--text-color);
  text-decoration: none;
  padding: 0.3rem 0.5rem;
  border-radius: 4px;
  display: block;
  transition: var(--transition);
  font-size: 0.9rem;
}

#toc-nav a:hover {
  background: var(--background-color);
  color: var(--secondary-color);
}

#toc-nav ul ul {
  margin-left: 1rem;
  margin-top: 0.5rem;
}

#toc-nav ul ul a {
  font-size: 0.85rem;
  color: var(--text-light);
}

/* Zone d'écriture */
#design-journal {
  min-height: 600px;
}

#journal-editor {
  min-height: 500px;
  padding: 2rem;
  font-size: 1rem;
  line-height: 1.8;
  outline: none;
  border: none;
  background: var(--surface-color);
  color: var(--text-color);
  resize: vertical;
  white-space: pre-wrap;
  word-wrap: break-word;
  overflow-wrap: break-word;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

#journal-editor:focus {
  background: var(--background-color);
}

#journal-editor:empty::before {
  content: "Commencez à écrire votre journal de conception...\A\A# Titre de votre projet\A\A## Contexte et objectifs\A\ADécrivez ici le contexte de votre projet...\A\A## Architecture\A\A### Composants principaux\A\A### Technologies utilisées\A\A## Décisions de conception\A\A### Décision 1\A\A**Problème :**\A**Options considérées :**\A**Décision :**\A**Justification :**\A\A## Prochaines étapes\A\A- [ ] Tâche 1\A- [ ] Tâche 2";
  color: var(--text-light);
  font-style: italic;
  white-space: pre-wrap;
  pointer-events: none;
}

#journal-editor p {
  margin-bottom: 1rem;
}

#journal-editor h1, #journal-editor h2, #journal-editor h3 {
  color: var(--primary-color);
  margin: 1.5rem 0 1rem 0;
}

#journal-editor h1 {
  font-size: 2rem;
  border-bottom: 3px solid var(--secondary-color);
  padding-bottom: 0.5rem;
}

#journal-editor h2 {
  font-size: 1.6rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.3rem;
}

#journal-editor h3 {
  font-size: 1.3rem;
  color: var(--secondary-color);
}

/* Assistant IA */
#ai-assistant {
  display: flex;
  flex-direction: column;
  /* Comportement normal de scroll */
}

/* Styles pour "Coming Soon" */
.ai-coming-soon {
  padding: 1.5rem;
  background: linear-gradient(135deg, var(--background-color), var(--surface-color));
}

.coming-soon-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--warning-color), #f39c12);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  box-shadow: 0 2px 8px rgba(243, 156, 18, 0.3);
  animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
  from { box-shadow: 0 2px 8px rgba(243, 156, 18, 0.3); }
  to { box-shadow: 0 4px 16px rgba(243, 156, 18, 0.5); }
}

.badge-icon {
  font-size: 1rem;
  animation: bounce 1s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-2px); }
}

.ai-preview h3 {
  color: var(--primary-color);
  font-size: 1rem;
  margin: 0 0 1rem 0;
  font-weight: 600;
}

.ai-features-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem 0;
}

.ai-features-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.9rem;
  line-height: 1.4;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.ai-features-list li:last-child {
  border-bottom: none;
}

.ai-tech-stack {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1rem;
  margin-top: 1rem;
}

.ai-tech-stack p {
  margin: 0.25rem 0;
  font-size: 0.85rem;
  color: var(--text-light);
}

.ai-tech-stack strong {
  color: var(--primary-color);
}

#ai-assistant-feedback {
  flex: 1;
  padding: 1.5rem;
  border-top: 1px solid var(--border-color);
  background: var(--background-color);
  overflow-y: auto;
  min-height: 200px;
}

.feedback-message {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1rem;
  margin-bottom: 1rem;
  font-size: 0.9rem;
  line-height: 1.5;
}

.coming-soon-message {
  background: linear-gradient(135deg, var(--surface-color), var(--background-color));
  border: 2px dashed var(--warning-color);
  text-align: center;
}

.feedback-message.loading {
  background: var(--background-color);
  border-color: var(--secondary-color);
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* Footer */
footer {
  background: var(--secondary-color);
  color: white;
  text-align: center;
  padding: 2rem;
  margin-top: 3rem;
}

footer a {
  color: white;
  text-decoration: underline;
}

footer a:hover {
  color: var(--secondary-color);
}

/* états de chargement */
.loading {
  position: relative;
  opacity: 0.7;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--border-color);
  border-top: 2px solid var(--secondary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Notifications */
.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 1rem 1.5rem;
  background: var(--success-color);
  color: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-hover);
  z-index: 1000;
  transform: translateX(400px);
  transition: var(--transition);
}

.notification.show {
  transform: translateX(0);
}

.notification.error {
  background: var(--accent-color);
}

.notification.warning {
  background: var(--warning-color);
}

/* Responsive design */
@media (max-width: 768px) {
  header > div {
    flex-direction: column;
    gap: 1rem;
  }

  .header-controls {
    flex-wrap: wrap;
    justify-content: center;
  }

  nav {
    flex-wrap: wrap;
    justify-content: center;
  }

  button, .btn {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
  }
}

/* Scrollbars personnalisées */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--background-color);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-light);
}

/* Sélection de texte */
::selection {
  background: var(--secondary-color);
  color: white;
}

/* Focus outline */
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--secondary-color);
  outline-offset: 2px;
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  backdrop-filter: blur(5px);
}

.modal-content {
  background: var(--surface-color);
  border-radius: var(--border-radius);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  width: 90%;
  max-width: 600px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-color);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  background: var(--background-color);
  border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.modal-header h3 {
  margin: 0;
  color: var(--primary-color);
  font-size: 1.2rem;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-light);
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: var(--transition);
  padding: 0;
}

.modal-close:hover {
  background: var(--accent-color);
  color: white;
  transform: scale(1.1);
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  flex: 1;
}

.journal-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.journal-item-container {
  margin-bottom: 0;
}

.journal-item {
  width: 100%;
  text-align: left;
  padding: 1rem;
  transition: var(--transition);
  border: 1px solid var(--border-color);
  background: var(--surface-color);
}

.journal-item:hover {
  border-color: var(--secondary-color);
  background: var(--surface-color);
  transform: translateY(-1px);
  box-shadow: var(--shadow-hover);
}

.journal-preview {
  display: flex;
  flex-direction: column;
}

.journal-preview strong {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
  display: block;
}

.journal-preview div {
  font-size: 0.85rem;
  color: var(--text-light);
  white-space: pre-wrap;
  line-height: 1.4;
}

/* Animation d'apparition du modal */
.modal-overlay.show {
  animation: modalFadeIn 0.3s ease-out;
}

.modal-overlay.show .modal-content {
  animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

/* Responsive modal */
@media (max-width: 768px) {
  .modal-content {
    width: 95%;
    max-height: 90vh;
    margin: 1rem;
  }

  .modal-header, .modal-body {
    padding: 1rem;
  }

  .modal-header h3 {
    font-size: 1.1rem;
  }
}

/* Bouton Scroll to Top */
.scroll-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: var(--secondary-color);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
  z-index: 1500;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.scroll-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-to-top:hover {
  background: var(--primary-color);
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
}

.scroll-to-top:active {
  transform: translateY(0) scale(0.95);
}

/* Responsive scroll to top */
@media (max-width: 768px) {
  .scroll-to-top {
    bottom: 1rem;
    right: 1rem;
    width: 45px;
    height: 45px;
    font-size: 1rem;
  }
}

/* Utilitaires */
.hidden {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.text-center {
  text-align: center;
}

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }