.stats-progress-container {
    width: 100%;
    height: 8px;
    background-color: rgba(0, 0, 0, 0.05);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 10px;
}

.dark-mode .stats-progress-container {
    background-color: rgba(255, 255, 255, 0.1);
}

.stats-progress-bar {
    height: 100%;
    width: 0%;
    background-color: var(--secondary-color);
    border-radius: 4px;
    transition: width 0.3s ease;
}.date-picker-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.date-input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.date-input-group i {
    position: absolute;
    left: 10px;
    color: var(--secondary-color);
    pointer-events: none;
}

.date-input {
    width: 100%;
    padding: 10px 10px 10px 35px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--card-color);
    color: var(--text-color);
    font-family: inherit;
    transition: var(--transition);
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg fill='%233498db' height='24' viewBox='0 0 24 24' width='24' xmlns='http://www.w3.org/2000/svg'><path d='M7 10l5 5 5-5z'/><path d='M0 0h24v24H0z' fill='none'/></svg>");
    background-repeat: no-repeat;
    background-position: right 8px center;
}

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

/* Custom calendar styling */
input[type="date"]::-webkit-calendar-picker-indicator {
    background-color: var(--card-color);
    padding: 5px;
    cursor: pointer;
    border-radius: 3px;
    filter: invert(0.5) sepia(1) saturate(5) hue-rotate(175deg);
}

.dark-mode input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(0.8);
}:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --background-color: #f5f7fa;
    --card-color: #ffffff;
    --text-color: #2c3e50;
    --border-color: #eaeaea;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --success-color: #2ecc71;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --info-color: #3498db;
}

/* Dark mode variables */
.dark-mode {
    --primary-color: #1a2639;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --background-color: #121212;
    --card-color: #1e1e1e;
    --text-color: #e0e0e0;
    --border-color: #333;
}

/* General Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s ease;
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
}

/* Header Styles */
header {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--box-shadow);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo h1 {
    margin: 0;
    font-size: 1.5rem;
}

.logo i {
    font-size: 1.5rem;
}

.theme-toggle {
    cursor: pointer;
    font-size: 1.2rem;
}

/* Search Container Styles */
.search-container {
    background-color: var(--card-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.search-form {
    display: flex;
    gap: 10px;
}

.search-input {
    flex: 1;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--card-color);
    color: var(--text-color);
}

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

.search-button {
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    padding: 12px 20px;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.search-button:hover {
    background-color: #2980b9;
}

.advanced-search-toggle {
    background: none;
    border: none;
    color: var(--secondary-color);
    cursor: pointer;
    margin-top: 15px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition);
}

.advanced-search-toggle:hover {
    color: #2980b9;
}

.advanced-search {
    margin-top: 1rem;
    height: 0;
    overflow: hidden;
    transition: height 0.3s ease-out;
}

.advanced-search.active {
    height: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    margin-top: 1rem;
}

.advanced-options {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.option-group {
    display: flex;
    flex-direction: column;
}

.option-group label {
    font-weight: 500;
    margin-bottom: 8px;
}

.option-group select, .option-group input:not([type="range"]) {
    padding: 8px 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--card-color);
    color: var(--text-color);
}

.option-group input[type="range"] {
    margin-bottom: 8px;
}

/* Main Content Styles */
.main-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 2rem;
    margin: 2rem 0;
}

.sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.filters-card, .stats-card {
    background-color: var(--card-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.filters-card h3, .stats-card h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-group {
    margin-bottom: 1rem;
}

.filter-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 0.5rem;
}

.tag {
    background-color: rgba(52, 152, 219, 0.1);
    color: var(--secondary-color);
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

.tag:hover {
    background-color: var(--secondary-color);
    color: white;
}

.tag.active {
    background-color: var(--secondary-color);
    color: white;
    border-color: var(--secondary-color);
}

.stats-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.stats-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

/* Results Styles */
.results-container {
    background-color: var(--card-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.results-count {
    font-weight: 500;
}

.sort-options {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sort-label {
    font-size: 0.9rem;
}

.sort-select {
    padding: 5px 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--card-color);
    color: var(--text-color);
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.result-card {
    background-color: var(--card-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}

.result-card:hover {
    box-shadow: var(--box-shadow);
    transform: translateY(-3px);
}

.result-title {
    margin-top: 0;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
    color: var(--secondary-color);
}

.result-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 0.5rem;
    font-size: 0.8rem;
    color: #7f8c8d;
}

.result-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.result-preview {
    margin-top: 1rem;
    font-size: 0.9rem;
    overflow: hidden;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    line-clamp: 3;
}

.relevance-score {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: 20px;
    padding: 3px 8px;
    font-size: 0.7rem;
    font-weight: 500;
}

.pagination {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 2rem;
    gap: 5px;
    max-width: 100%;
    overflow-x: auto;
    padding-bottom: 5px;
}

.pagination button {
    background-color: var(--card-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 8px 12px;
    cursor: pointer;
    transition: var(--transition);
    min-width: 40px;
    flex: 0 0 auto;
}

.pagination button:hover, .pagination button.active {
    background-color: var(--secondary-color);
    color: white;
    border-color: var(--secondary-color);
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.loader {
    display: none;
    margin: 2rem auto;
    width: 50px;
    height: 50px;
    border: 5px solid rgba(52, 152, 219, 0.2);
    border-radius: 50%;
    border-top-color: var(--secondary-color);
    animation: spin 1s linear infinite;
}

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

.status-message {
    display: none;
    text-align: center;
    padding: 1.5rem;
    color: #7f8c8d;
    white-space: pre-line;
    font-family: monospace;
    font-size: 0.9rem;
    background-color: var(--card-color);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    max-height: 120px;
    overflow-y: auto;
}

/* Visualization Styles */
.visualization-section {
    margin: 2rem 0;
}

.visualization-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1rem;
}

.viz-tab {
    padding: 0.8rem 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 2px solid transparent;
    display: flex;
    align-items: center;
    gap: 8px;
}

.viz-tab.active {
    border-bottom-color: var(--secondary-color);
    color: var(--secondary-color);
}

.viz-content {
    display: none;
    background-color: var(--card-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    max-height: 450px;
    overflow: hidden;
}

.viz-content.active {
    display: block;
}

.chart-container {
    width: 100%;
    height: 350px;
    max-height: 350px;
    margin-top: 1rem;
    position: relative;
    overflow: hidden;
}

.term-frequency-chart, .document-relevance-chart {
    width: 100% !important;
    height: 100% !important;
    max-height: 350px;
}

@media (max-width: 768px) {
    .chart-container {
        height: 300px;
    }
    
    .viz-content {
        max-height: 400px;
        padding: 1rem;
    }
    
    .viz-content h3 {
        font-size: 1.2rem;
        margin-bottom: 0.5rem;
    }
}

/* Modal Styles */
.document-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.document-modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--card-color);
    border-radius: var(--border-radius);
    width: 100%;
    max-width: 900px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

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

.modal-title {
    margin: 0;
    font-size: 1.5rem;
}

.close-modal {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
}

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

.document-content-wrapper {
    max-height: 50vh;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin: 1.5rem 0;
}

.document-content {
    font-family: monospace;
    white-space: pre-wrap;
    line-height: 1.5;
    padding: 1rem;
    background-color: rgba(0, 0, 0, 0.03);
    color: var(--text-color);
}

.dark-mode .document-content {
    background-color: rgba(255, 255, 255, 0.05);
}

.document-meta {
    margin-bottom: 1rem;
}

.document-meta-item {
    display: flex;
    margin-bottom: 0.5rem;
}

.document-meta-item strong {
    width: 120px;
    font-weight: 500;
}

.highlight {
    background-color: rgba(231, 76, 60, 0.2);
    padding: 0 2px;
    border-radius: 2px;
}

.similar-documents {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.similar-documents h4 {
    margin-top: 0;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.similar-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.similar-item {
    background-color: rgba(0, 0, 0, 0.03);
    padding: 8px 12px;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

.dark-mode .similar-item {
    background-color: rgba(255, 255, 255, 0.05);
}

.similar-item:hover {
    background-color: var(--secondary-color);
    color: white;
}

.modal-footer {
    display: flex;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
}

.btn-prev-doc, .btn-next-doc {
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    padding: 8px 16px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-prev-doc:hover, .btn-next-doc:hover {
    background-color: #2980b9;
}

.btn-prev-doc:disabled, .btn-next-doc:disabled {
    background-color: #95a5a6;
    cursor: not-allowed;
}

/* Footer Styles */
footer {
    background-color: var(--primary-color);
    color: white;
    padding: 1.5rem 0;
    margin-top: 3rem;
    text-align: center;
}

/* Responsive Styles */
@media (max-width: 900px) {
    .main-content {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1.5rem;
    }

    .filters-card, .stats-card {
        margin-bottom: 0;
    }
    
    .visualization-tabs {
        overflow-x: auto;
        white-space: nowrap;
        padding-bottom: 5px;
        margin-bottom: 0.5rem;
    }
    
    .viz-tab {
        display: inline-flex;
        white-space: nowrap;
    }
}

@media (max-width: 768px) {
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .visualization-section {
        margin: 1.5rem 0;
    }
    
    .search-button {
        padding: 10px 15px;
    }
    
    .logo h1 {
        font-size: 1.2rem;
    }
    
    .modal-content {
        width: 95%;
        max-width: 95%;
    }
    
    .document-content {
        font-size: 0.85rem;
    }
}

@media (max-width: 600px) {
    .search-form {
        flex-direction: column;
    }

    .search-button {
        width: 100%;
        justify-content: center;
        margin-top: 10px;
    }

    .results-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .sidebar {
        display: block;
    }

    .filters-card, .stats-card {
        margin-bottom: 1.5rem;
    }

    .advanced-options {
        grid-template-columns: 1fr;
    }
    
    .viz-tab {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
    
    .option-group select, .option-group input:not([type="range"]), .sort-select {
        font-size: 0.9rem;
    }
    
    .modal-title {
        font-size: 1.2rem;
    }
    
    .btn-prev-doc, .btn-next-doc {
        padding: 6px 10px;
        font-size: 0.9rem;
    }
}

/* Additional responsive fixes for small devices */
@media screen and (max-width: 576px) {
    /* Container padding adjustment for smaller screens */
    .container {
      padding: 0 10px;
    }
    
    /* Search container adjustments */
    .search-container {
      padding: 1rem;
      margin: 1rem 0;
    }
    
    /* Results container */
    .results-container {
      padding: 1rem;
      overflow-x: hidden;
    }
    
    /* Result cards */
    .result-card {
      padding: 1rem;
      width: 100%;
      min-width: 0;
      box-sizing: border-box;
    }
    
    /* Filter and stats cards */
    .filters-card, .stats-card {
      padding: 1rem;
      margin-bottom: 1rem;
      overflow-x: hidden;
      width: 100%;
      min-width: 0;
      box-sizing: border-box;
    }
    
    /* Tag cloud */
    .tag-cloud {
      max-width: 100%;
      flex-wrap: wrap;
    }
    
    .tag {
      margin-bottom: 5px;
      font-size: 0.8rem;
      max-width: 100%;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    
    /* Charts */
    .chart-container {
      height: 250px;
    }
    
    /* Visualization section */
    .visualization-section {
      margin: 1rem 0;
    }
    
    .viz-content {
      padding: 1rem;
      max-height: 350px;
    }
    
    /* Fix for the visualization tabs */
    .visualization-tabs {
      flex-wrap: wrap;
    }
    
    .viz-tab {
      flex: 1 0 auto;
      padding: 0.5rem;
      font-size: 0.8rem;
      text-align: center;
    }
    
    /* Status message */
    .status-message {
      padding: 1rem;
      font-size: 0.8rem;
      max-height: 100px;
    }
    
    /* Results header */
    .results-header {
      flex-direction: column;
      align-items: flex-start;
    }
    
    .sort-options {
      margin-top: 0.5rem;
      width: 100%;
    }
    
    .sort-select {
      width: 100%;
    }
    
    /* Document modal for smaller screens */
    .modal-content {
      width: 95%;
      max-width: 95%;
      max-height: 80vh;
    }
    
    .modal-header {
      padding: 1rem;
    }
    
    .modal-body {
      padding: 1rem;
    }
    
    .modal-title {
      font-size: 1.2rem;
    }
    
    .document-content-wrapper {
      max-height: 40vh;
    }
    
    /* Force table-based content to be scrollable horizontally */
    .document-content {
      font-size: 0.8rem;
      overflow-x: auto;
      white-space: pre-wrap;
      word-break: break-word;
    }
    
    /* Fix for date pickers */
    .date-input-group {
      width: 100%;
    }
    
    .date-input {
      font-size: 0.9rem;
      padding: 8px 8px 8px 30px;
    }
  }
  
  /* Extra small screens like Galaxy S8 (360px width) */
  @media screen and (max-width: 375px) {
    /* Additional fixes for extremely small screens */
    .search-button {
      padding: 8px 12px;
      font-size: 0.9rem;
    }
    
    .search-input {
      padding: 8px 10px;
      font-size: 0.9rem;
    }
    
    .logo h1 {
      font-size: 1rem;
    }
    
    .chart-container {
      height: 200px;
    }
    
    /* Make sure visualization tabs fit */
    .viz-tab {
      padding: 0.4rem;
      font-size: 0.75rem;
    }
    
    /* Fixed width issues */
    .main-content,
    .sidebar,
    .results-section,
    .results-container,
    .filters-card,
    .stats-card,
    .visualization-section,
    .viz-content {
      width: 100%;
      max-width: 100%;
      min-width: 0;
      box-sizing: border-box;
      margin-left: 0;
      margin-right: 0;
      padding-left: 10px;
      padding-right: 10px;
    }
    
    /* Ensure tables and pre blocks don't overflow */
    table, pre {
      max-width: 100%;
      overflow-x: auto;
      display: block;
    }
    
    /* Reduce margins in result cards */
    .result-meta {
      gap: 8px;
      font-size: 0.7rem;
    }
    
    .result-title {
      font-size: 1rem;
    }
    
    /* Improve header layout on tiny screens */
    .header-content {
      flex-direction: column;
      align-items: flex-start;
      gap: 0.5rem;
    }
    
    .theme-toggle {
      align-self: flex-end;
      margin-top: -25px;
    }
  }
  
  /* Fix for screens where chart labels may be unreadable */
  @media screen and (max-width: 480px) {
    /* Adjust chart options for very small screens */
    .term-frequency-chart,
    .document-relevance-chart {
      font-size: 8px !important;
    }
  }
  
  footer a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  position: relative;
  transition: all 0.3s ease;
}

footer a:hover {
  color: #3498db;
  text-decoration: none;
}

footer a:after {
  content: '';
  position: absolute;
  width: 0;
  height: 1px;
  bottom: -2px;
  left: 0;
  background-color: #3498db;
  transition: width 0.3s ease;
}

footer a:hover:after {
  width: 100%;
}

footer p i {
  font-style: italic;
  opacity: 0.9;
}