/* Color Variables - Centralized color system */
:root {
    /* Primary palette */
    --primary: #2c3e50;
    --primary-light: #3a506e;
    --primary-dark: #1e2b38;
    
    /* Secondary palette */
    --secondary: #34495e;
    
    /* Accent colors */
    --accent: #3498db;
    --accent-light: #5faee3;
    --accent-dark: #2980b9;
    
    /* Status colors */
    --success: #2ecc71;
    --success-light: #4dd787;
    --success-dark: #25a25a;
    --warning: #f39c12;
    --warning-light: #f5b041;
    --warning-dark: #d68910;
    --danger: #e74c3c;
    --danger-light: #ec7063;
    --danger-dark: #cb4335;
    
    /* Neutral colors */
    --white: #ffffff;
    --light: #ecf0f1;
    --light-hover: #dde4e6;
    --medium-gray: #95a5a6;
    --gray: #95a5a6;
    --dark: #2c3e50;
    --black: #000000;
    
    /* Border and background colors */
    --border: #ddd;
    --border-dark: #ccc;
    --body-text-color: #333;
    --body-bg-color: #f8f9fa;
    --light-gray: #f5f5f5;
    
    /* Table colors */
    --table-stripe: #f6f9fa;
    --table-hover: #e2e8ea;
    
    /* Footer colors */
    --footer-bg: #212121;
    --footer-text: #bbb;
    --footer-link-hover: #6200ea;
    
    /* Scrollbar colors */
    --scrollbar-thumb: #0070f3;
    --scrollbar-track: #ededed;
    
    /* Green shades */
    --darkest-green: #29712d;
    --dark-green: #2E7D32;
    --light-green: #E8F5E9;
    
    /* Error and validation colors */
    --error-red: #D32F2F;
    
    /* Team color */
    --team-role-color: #4a90e2;
    
    /* Category colors */
    --category-variable-color: #ffdd55;     /* Yellow */
    --category-analysis-color: #5555ff;     /* Blue */
    --category-cell-color: #55cc55;         /* Green */
    --category-study-color: #ff9933;        /* Orange */
    --category-endpoint-color: #aa55ff;     /* Purple */
    
    /* Font variables */
    --font-family: 'Arial', sans-serif;
    --font-size-small: 0.875rem;
    --font-size-normal: 1rem;
    --font-size-medium: 1.2rem;
    --font-size-large: 1.5rem;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 600;
    --font-weight-extra-bold: 700;
}

/* Global Styles */
* { 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box; 
    font-family: var(--font-family);
}

html {
    scroll-behavior: smooth;
}

body {
    line-height: 1.6;
    color: var(--body-text-color);
    background-color: var(--body-bg-color);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Well container - commonly used in tabs */
.well {
    min-height: 20px;
    padding: 19px;
    margin-bottom: 20px;
    background-color: var(--light-gray);
    border: 1px solid var(--border);
    border-radius: 4px;
    box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.05);
    width: 100%;
}

/* Tab navigation styling - used across tabs */
.tab-content {
    display: none;
}

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

.tab-nav {
    display: flex;
    border-bottom: 1px solid var(--border);
    margin-bottom: 20px;
}

.tab-link {
    padding: 10px 15px;
    cursor: pointer;
    margin-bottom: -1px;
    border: 1px solid transparent;
    border-top-left-radius: 0.25rem;
    border-top-right-radius: 0.25rem;
    color: var(--accent);
}

.tab-link.active {
    color: var(--dark);
    background-color: var(--white);
    border-color: var(--border) var(--border) var(--white);
}

.tab-link:hover:not(.active) {
    border-color: var(--light) var(--light) var(--border);
    background-color: var(--light);
}

/* Common Form Elements */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 5px;
    font-weight: var(--font-weight-bold);
    color: var(--dark);
}

.form-select,
.form-input,
.form-textarea {
    width: 100%;
    padding: 8px;
    border-radius: 4px;
    border: 1px solid var(--border);
    font-size: var(--font-size-normal);
}

.form-select:focus,
.form-input:focus,
.form-textarea:focus {
    border-color: var(--accent);
    outline: none;
}

/* Common Checkbox Container Styling */
.checkbox-container {
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 10px;
    margin-top: 5px;
    background-color: var(--white);
}

.checkbox-item {
    display: flex;
    align-items: center;
    margin-bottom: 8px;
    padding: 5px;
}

.checkbox-item:nth-child(odd) {
    background-color: var(--white);
}

.checkbox-item:nth-child(even) {
    background-color: #f0f0f0;
}

.checkbox-item label {
    order: 1;
    font-weight: normal;
    margin: 0;
    flex-grow: 1;
}

.checkbox-item input[type="checkbox"],
.checkbox-item input[type="radio"] {
    order: 2;
    margin-left: 5px;
}

/* Selection Summary */
.selection-summary {
    margin-top: 15px;
    font-weight: var(--font-weight-bold);
    color: var(--accent);
}

/* Button Styling */
.btn {
    display: inline-block;
    background-color: var(--accent);
    color: var(--white);
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: var(--font-size-normal);
    font-weight: var(--font-weight-medium);
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: var(--accent-dark);
}

.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary-dark);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
}

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

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

.btn:disabled {
    background-color: var(--gray);
    cursor: not-allowed;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 0.875rem;
}

.btn-link {
    color: var(--accent);
    background: none;
    border: none;
    padding: 0;
    text-decoration: underline;
}

.btn-link:hover {
    color: var(--accent-dark);
    background: none;
}

.reset-button {
    background-color: #f0f0f0;
    border: 1px solid var(--border-dark);
    border-radius: 3px;
    color: var(--dark);
    cursor: pointer;
    font-size: 12px;
    margin-left: 10px;
    padding: 2px 8px;
    transition: all 0.2s ease;
}

.reset-button:hover {
    background-color: #e0e0e0;
    border-color: #999;
}

/* Submit button container */
.submit-container {
    margin: 20px 0;
    text-align: center;
}

/* Compact Data-Dense Table Style */
.table-container {
    height: 60vh;
    overflow-y: auto;
    overflow-x: auto;
    border: 1px solid var(--border);
    margin-bottom: 20px;
}

.table-compact {
    border-collapse: collapse;
    width: 100%;
    font-size: var(--font-size-small);
}

.table-compact thead th {
    background-color: var(--primary);
    color: var(--light);
    font-weight: var(--font-weight-bold);
    padding: 8px 12px;
    border-bottom: 2px solid var(--primary-dark);
    text-align: left;
    white-space: nowrap;
}

.table-compact tbody td {
    padding: 6px 12px;
    border-bottom: 1px solid var(--border);
}

.table-compact tbody tr:hover {
    background-color: var(--table-hover);
}

/* Result display styling */
.result-display {
    margin-top: 30px;
}

.result-display h3 {
    margin-bottom: 15px;
    font-size: var(--font-size-medium);
    font-weight: var(--font-weight-bold);
}

.result-pre {
    background-color: var(--white);
    padding: 10px;
    border-radius: 4px;
    overflow-x: auto;
    border: 1px solid var(--border);
    font-family: Menlo, Consolas, monospace;
}

/* Toggle button styling */
.toggle-button {
    background-color: var(--gray);
    color: var(--light);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 8px 12px;
    margin: 0 5px;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.toggle-button.active {
    background-color: var(--accent-dark);
    color: var(--light);
}

.toggle-button:disabled {
    background-color: #e0e0e0;
    color: #aaa;
    border-color: #ccc;
    cursor: not-allowed;
}

/* Upload area styling */
.upload-area {
    border: 2px dashed var(--border);
    border-radius: 4px;
    padding: 20px;
    text-align: center;
    background-color: var(--light);
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-area:hover {
    border-color: var(--dark-green);
    background-color: var(--light-green);
}

/* Status message styling */
.status-message {
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 4px;
    font-weight: var(--font-weight-bold);
}

.status-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.status-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Flexbox utilities */
.flex-row {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 20px;
}

.flex-column {
    flex: 1;
}

/* Utility classes */
.hidden {
    display: none;
}

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

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }

/* DataTables customization */
.dataTables_wrapper .dataTables_length, 
.dataTables_wrapper .dataTables_filter, 
.dataTables_wrapper .dataTables_info, 
.dataTables_wrapper .dataTables_processing, 
.dataTables_wrapper .dataTables_paginate {
    font-size: var(--font-size-small);
    color: var(--dark);
}

.dataTables_wrapper .dataTables_paginate {
    padding-top: 0.5em;
}

.dataTables_wrapper .dataTables_paginate .paginate_button {
    padding: 0.25em 0.75em;
}

/* DataTable pagination customization */
.dataTables_wrapper .dataTables_paginate .paginate_button {
    text-decoration: none !important;
    cursor: pointer;
    color: var(--dark) !important;
    background: var(--light);
    box-shadow: none;
    border: 1px solid transparent;
}

.dataTables_wrapper .dataTables_paginate .paginate_button:hover {
    color: var(--light) !important;
    background: var(--primary-light);
    border: 1px solid transparent;
}

.dataTables_wrapper .dataTables_paginate .paginate_button:active {
    outline: none;
    background: var(--primary);
    border: 1px solid transparent;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.current, 
.dataTables_wrapper .dataTables_paginate .paginate_button.current:hover {
    color: var(--light) !important;
    background: var(--accent);
    border: 1px solid transparent;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.disabled, 
.dataTables_wrapper .dataTables_paginate .paginate_button.disabled:hover, 
.dataTables_wrapper .dataTables_paginate .paginate_button.disabled:active {
    cursor: default;
    color: var(--gray) !important;
    background: var(--light);
    border: 1px solid transparent;
}

/* DataTable buttons customization */
button.dt-button,
div.dt-button,
a.dt-button {
    border: 1px solid transparent;
    cursor: pointer;
    color: var(--light);
    background: var(--accent);
    box-shadow: none;
}

button.dt-button:hover:not(.disabled),
div.dt-button:hover:not(.disabled),
a.dt-button:hover:not(.disabled) {
    text-decoration: none;
    border: 1px solid transparent;
    background: var(--accent-dark);
}

/* DataTable button collection styling */
div.dt-button-collection button.dt-button:not(.disabled),
div.dt-button-collection div.dt-button:not(.disabled),
div.dt-button-collection a.dt-button:not(.disabled) {
    background: var(--light);
    color: var(--dark);
    box-shadow: none;
    border: 1px solid var(--border);
}

div.dt-button-collection button.dt-button:hover:not(.disabled),
div.dt-button-collection div.dt-button:hover:not(.disabled),
div.dt-button-collection a.dt-button:hover:not(.disabled) {
    background: var(--primary-light);
    color: var(--light);
    box-shadow: none;
    border: 1px solid var(--border);
}

div.dt-button-collection button.dt-button:active:not(.disabled),
div.dt-button-collection div.dt-button:active:not(.disabled),
div.dt-button-collection a.dt-button:active:not(.disabled) {
    background: var(--accent);
    color: var(--light);
    box-shadow: none;
    border: 1px solid var(--border);
}

div.dt-button-collection button.dt-button:active:not(.disabled):hover:not(.disabled),
div.dt-button-collection div.dt-button:active:not(.disabled):hover:not(.disabled),
div.dt-button-collection a.dt-button:active:not(.disabled):hover:not(.disabled) {
    background: var(--accent-dark);
    box-shadow: none;
    border: 1px solid var(--border);
}

/* CATEGORY ROW */
/* Category row styling */
.category-row {
    font-weight: bold;
    text-align: center;
    border-bottom: 2px solid var(--border);
}

/* Apply colors to the different categories */
.category-variable {
    background-color: var(--category-variable-color) !important;
    color: var(--black);
}

.category-analysis {
    background-color: var(--category-analysis-color) !important;
    color: var(--white);
}

.category-cell {
    background-color: var(--category-cell-color) !important;
    color: var(--black);
}

.category-study {
    background-color: var(--category-study-color) !important;
    color: var(--black);
}

.category-endpoint {
    background-color: var(--category-endpoint-color) !important;
    color: var(--white);
}

/* Different category color indicators */
.category-indicator {
    display: inline-block;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    margin-right: 8px;
    vertical-align: middle;
}

.category-variable-indicator {
    background-color: var(--category-variable-color);
}

.category-analysis-indicator {
    background-color: var(--category-analysis-color);
}

.category-cell-indicator {
    background-color: var(--category-cell-color);
}

.category-study-indicator {
    background-color: var(--category-study-color);
}

.category-endpoint-indicator {
    background-color: var(--category-endpoint-color);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .flex-row {
        flex-direction: column;
    }
    
    .flex-column {
        width: 100%;
    }
    
    .tab-nav {
        flex-direction: column;
    }
    
    .tab-link {
        border-radius: 0;
    }
    
    .tab-link.active {
        border-color: var(--border);
    }
    
    .form-row {
        flex-direction: column;
    }
    
    .form-group {
        margin-bottom: 1rem;
    }
}

/* Print styles */
@media print {
    .tab-nav, 
    .form-row, 
    .btn, 
    .dataTables_length, 
    .dataTables_filter, 
    .dataTables_paginate {
        display: none !important;
    }
    
    .tab-content {
        display: block !important;
    }
    
    .well {
        border: none;
        box-shadow: none;
        padding: 0;
    }
    
    table {
        width: 100% !important;
        border-collapse: collapse !important;
    }
    
    table td, 
    table th {
        background-color: #fff !important;
        border: 1px solid var(--border) !important;
    }
}