:root {
  --primary-color: #4A90E2;
  --secondary-color: #50E3C2;
  --accent-color: #FF7F50;
  --background-color: #F5F5F5;
  --text-color: #333;
  --text-light: #666;
  --border-radius: 10px;
  --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  --transition-time: 0.3s ease-in-out;
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'Roboto', sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
  margin: 0;
  padding: 0;
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text-color);
  margin-bottom: 15px;
}

p {
  margin-bottom: 15px;
  color: var(--text-light);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.button, button, .btn {
  background-color: var(--primary-color);
  color: #fff;
  padding: 10px 20px;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: 16px;
  transition: background-color var(--transition-time);
}

.button:hover, button:hover, .btn:hover {
  background-color: #3b7dc4;
}

input, textarea, select {
  width: 100%;
  padding: 10px;
  margin-bottom: 15px;
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  transition: border-color var(--transition-time), box-shadow var(--transition-time);
}

input:focus, textarea:focus, select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 8px rgba(74, 144, 226, 0.3);
}

.table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 20px;
}

.table th, .table td {
  padding: 15px;
  text-align: left;
  border-bottom: 1px solid #ddd;
}

.table th {
  background-color: var(--primary-color);
  color: #fff;
}

.table tr:nth-child(even) {
  background-color: #f9f9f9;
}

.card {
  background-color: #fff;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  padding: 20px;
  margin-bottom: 20px;
  transition: transform var(--transition-time), box-shadow var(--transition-time);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.header {
  background-color: var(--primary-color);
  color: #fff;
  padding: 20px;
  text-align: center;
  border-radius: var(--border-radius);
  margin-bottom: 20px;
}

@media (max-width: 768px) {
  .container {
    padding: 15px;
  }

  .button, button, .btn {
    width: 100%;
  }

  input, textarea, select {
    padding: 8px;
  }

  .table th, .table td {
    padding: 10px;
  }
}

/* Chat Container */
.chat-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 320px;
  border: 1px solid #ccc;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow);
  background-color: #fff;
}

.chat-header {
  background-color: var(--primary-color);
  color: #fff;
  padding: 15px;
  font-weight: bold;
  position: relative;
  border-bottom: 1px solid #ddd;
}

.close-btn {
  position: absolute;
  top: 50%;
  right: 15px;
  transform: translateY(-50%);
  cursor: pointer;
}

.chat-box {
  max-height: 350px;
  overflow-y: auto;
  padding: 15px;
  background-color: #fafafa;
}

.message {
  margin-bottom: 15px;
  padding: 12px 15px;
  border-radius: var(--border-radius);
}

.bot-message {
  background-color: #f2f2f2;
}

.chat-form {
  display: flex;
  background-color: #f9f9f9;
  padding: 15px;
}

.chat-form input[type="text"] {
  flex: 1;
  border: 1px solid #ddd;
  padding: 12px;
  border-radius: var(--border-radius) 0 0 var(--border-radius);
}

.chat-form button {
  border: none;
  background-color: var(--primary-color);
  color: #fff;
  padding: 12px 15px;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
  cursor: pointer;
}

/* Additional buttons and forms */
.search-button {
  background-color: var(--primary-color);
  color: #fff;
  border: none;
  border-radius: var(--border-radius);
  padding: 12px 24px;
  cursor: pointer;
  text-transform: uppercase;
  transition: background-color var(--transition-time);
}

.search-button:hover {
  background-color: #3b7dc4;
}

.upload-form, .upload-form2 {
  margin-bottom: 20px;
  background-color: #fff;
  padding: 20px;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

/* Progress Container */
.progress-container {
  width: 100%;
  background-color: #f3f3f3;
  border-radius: var(--border-radius);
  margin-bottom: 20px;
}

.progress-bar {
  width: 70%; /* This can be dynamically adjusted */
  height: 25px;
  background-color: var(--primary-color);
  border-radius: var(--border-radius);
  transition: width 0.4s ease;
}

/* Modal Backdrop */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 999;
}

/* Dark Theme Specific */
.dark-theme .header {
  background-color: #333;
}

.dark-theme .progress-bar {
  background-color: #444;
}

.dark-theme .btn-cancel {
  background-color: #e74c3c;
  color: #fff;
}

.dark-theme body {
  background-color: #2c2c2c;
  color: #ccc;
}

/* Search Select */
.search-select {
  padding: 10px;
  width: 100%;
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  margin-bottom: 20px;
  background-color: #fff;
  transition: border-color var(--transition-time);
}

.search-select:focus {
  border-color: var(--primary-color);
}

/* Adjusting Spacing and Layout for Consistency */
.container {
  padding: 30px;
}

.header, .card, .chat-container, .modal-backdrop {
  margin-bottom: 20px;
}

button, .btn, .search-button {
  margin-bottom: 15px;
}

@media (max-width: 768px) {
  .header {
    text-align: center;
    padding: 15px;
  }
  
  .container {
    padding: 15px;
  }

  .progress-bar {
    height: 20px;
  }
}

/* Menu Adjustments */
.menu {
  display: flex;
  justify-content: center; /* Centering the menu */
  padding: 15px;
  background-color: var(--primary-color);
  color: white;
  position: relative;
  z-index: 1000;
}

.menu-item {
  margin: 0 15px;
  list-style: none;
}

.menu a {
  color: white;
  text-decoration: none;
  font-weight: bold;
  transition: color var(--transition-time);
}

.menu a:hover {
  color: var(--accent-color);
}

/* Ensuring the container is not overlapped by the menu */
.container {
  margin-top: 100px; /* Adding top margin to ensure no overlap with menu */
  padding: 30px;
  background-color: var(--background-color);
  box-shadow: var(--box-shadow);
  border-radius: var(--border-radius);
}

/* Responsive adjustments for menu */
@media (max-width: 768px) {
  .menu {
    flex-direction: column;
    align-items: center;
  }

  .container {
    margin-top: 120px; /* Adjust top margin for mobile */
    padding: 20px;
  }

  .menu-item {
    margin: 10px 0;
  }
}

/* Progress Container */
.progress-container {
  width: 100%;
  background-color: #f3f3f3;
  border-radius: var(--border-radius);
  margin-bottom: 20px;
}

.progress-bar {
  width: 70%;
  height: 25px;
  background-color: var(--primary-color);
  border-radius: var(--border-radius);
  transition: width 0.4s ease;
}

/* Modal Backdrop */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 999;
}

/* Success Message */
.success-message {
  color: #28a745;
  background-color: #d4edda;
  border-color: #c3e6cb;
  padding: 10px;
  border-radius: var(--border-radius);
}

/* Spinner Border */
.spinner-border {
  width: 3rem;
  height: 3rem;
  border: 0.25em solid #f3f3f3;
  border-right-color: var(--primary-color);
  border-radius: 50%;
  animation: spinner-border 0.75s linear infinite;
}

/* Sidebar */
.sidebar {
  width: 250px;
  background-color: #343a40;
  color: white;
  position: fixed;
  top: 0;
  left: 0;
  height: 100%;
  padding: 15px;
}

/* Search Button */
.search-button {
  background-color: var(--primary-color);
  color: #fff;
  border: none;
  border-radius: var(--border-radius);
  padding: 12px 24px;
  cursor: pointer;
  text-transform: uppercase;
  transition: background-color var(--transition-time);
}

.search-button:hover {
  background-color: #3b7dc4;
}

/* Upload Form */
.upload-form {
  margin-bottom: 20px;
  background-color: #fff;
  padding: 20px;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

/* Welcome Message */
.welcome-message {
  font-size: 1.5em;
  color: var(--primary-color);
  margin-bottom: 20px;
}

/* Table Container */
.table-container {
  width: 100%;
  overflow-x: auto;
}

.table-responsive {
  display: block;
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* Centering the login form and other important containers */
.login-container, .form-container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh; /* Full viewport height to center vertically */
  padding: 20px;
}

.login-form, .form-container form {
  background-color: #fff;
  padding: 40px;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  max-width: 400px;
  width: 100%;
}

.form-group {
  margin-bottom: 20px;
}

.form-group input {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  transition: border-color var(--transition-time), box-shadow var(--transition-time);
}

.form-group input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 8px rgba(74, 144, 226, 0.3);
}

/* Ensuring that the container stays centered on smaller screens */
@media (max-width: 768px) {
  .login-container, .form-container {
    height: auto;
    padding: 20px;
  }

  .login-form, .form-container form {
    padding: 20px;
  }
}

/* Error Message */
.error-message {
  color: #dc3545;
  background-color: #f8d7da;
  border-color: #f5c6cb;
  padding: 15px;
  border-radius: var(--border-radius);
  margin-bottom: 20px;
  box-shadow: var(--box-shadow);
}

/* Database Connection Message */
.db-connection-message {
  color: #28a745;
  background-color: #d4edda;
  border-color: #c3e6cb;
  padding: 15px;
  border-radius: var(--border-radius);
  margin-bottom: 20px;
  box-shadow: var(--box-shadow);
}

/* Form Styling */
form {
  background-color: #fff;
  padding: 30px;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

input[type="text"], input[type="password"], select {
  width: 100%;
  padding: 10px;
  margin-bottom: 15px;
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  transition: border-color var(--transition-time), box-shadow var(--transition-time);
}

input[type="text"]:focus, input[type="password"]:focus, select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 8px rgba(74, 144, 226, 0.3);
}

/* Submit Button */
button[type="submit"] {
  background-color: var(--primary-color);
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: background-color var(--transition-time);
}

button[type="submit"]:hover {
  background-color: #3b7dc4;
}

/* Ensuring all forms are centered on the page */
form {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  margin: 0 auto; /* Ensure the form is centered */
  max-width: 400px; /* Limit the form width for smaller screens */
  width: 100%;
  padding: 30px;
  background-color: #fff;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

/* Styling form groups */
.form-group {
  width: 100%; /* Make sure each form group takes up full width */
  margin-bottom: 20px;
}

.form-group input, 
.form-group select, 
.form-group textarea {
  width: 100%; /* Input fields also take up full width */
  padding: 10px;
  margin-bottom: 15px;
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  transition: border-color var(--transition-time), box-shadow var(--transition-time);
}

.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 8px rgba(74, 144, 226, 0.3);
}

/* Centering submit buttons */
button[type="submit"] {
  display: inline-block;
  background-color: var(--primary-color);
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: background-color var(--transition-time);
  margin-top: 15px;
}

button[type="submit"]:hover {
  background-color: #3b7dc4;
}

/* Additional centering adjustments for mobile screens */
@media (max-width: 768px) {
  form {
    padding: 20px;
  }
}

/* Ensuring all forms are centered both horizontally and vertically */
form {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  margin: 0 auto;
  max-width: 400px;
  width: 100%;
  padding: 30px;
  background-color: #fff;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  min-height: 100vh; /* Ensure the form takes the full viewport height */
}

.form-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh; /* Full viewport height to vertically center the form */
  padding: 20px;
}

.form-group {
  width: 100%;
  margin-bottom: 20px;
}

.form-group input, 
.form-group select, 
.form-group textarea {
  width: 100%;
  padding: 10px;
  margin-bottom: 15px;
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  transition: border-color var(--transition-time), box-shadow var(--transition-time);
}

.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 8px rgba(74, 144, 226, 0.3);
}

button[type="submit"] {
  background-color: var(--primary-color);
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: background-color var(--transition-time);
  margin-top: 15px;
}

button[type="submit"]:hover {
  background-color: #3b7dc4;
}

/* Centering adjustments for mobile screens */
@media (max-width: 768px) {
  form {
    padding: 20px;
  }

  .form-container {
    padding: 20px;
  }
}