/* Modern FQDN Tool Styles */

/* CSS Custom Properties (Variables) */
:root {
    /* Color Palette */
    --color-primary: #3b82f6;
    --color-primary-hover: #2563eb;
    --color-primary-light: #60a5fa;
    --color-primary-dark: #1e40af;
    
    --color-secondary: #10b981;
    --color-secondary-hover: #059669;
    --color-secondary-light: #34d399;
    
    --color-success: #10b981;
    --color-success-bg: #064e3b;
    --color-success-hover: #065f46;
    --color-success-border: #10b981;
    
    --color-danger: #ef4444;
    --color-danger-bg: #7f1d1d;
    --color-danger-hover: #991b1b;
    --color-danger-border: #ef4444;
    
    --color-warning: #f59e0b;
    --color-info: #3b82f6;
    
    /* Background Colors */
    --bg-primary: #0f1419;
    --bg-secondary: #1a1f2e;
    --bg-tertiary: #1e293b;
    --bg-quaternary: #0f172a;
    --bg-card: #1e293b;
    --bg-overlay: rgba(0, 0, 0, 0.7);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #e2e8f0;
    --text-muted: #94a3b8;
    --text-light: #cbd5e1;
    --text-dark: #333333;
    
    /* Border Colors */
    --border-primary: #334155;
    --border-secondary: #475569;
    --border-light: #64748b;
    --border-focus: var(--color-primary);
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 20px;
    --spacing-2xl: 24px;
    --spacing-3xl: 30px;
    --spacing-4xl: 40px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 10px;
    --radius-2xl: 12px;
    --radius-3xl: 15px;
    --radius-full: 50%;
    --radius-pill: 999px;
    
    /* Font Sizes */
    --font-xs: 10px;
    --font-sm: 12px;
    --font-base: 14px;
    --font-lg: 16px;
    --font-xl: 18px;
    --font-2xl: 1.5rem;
    --font-3xl: 2rem;
    --font-4xl: 2.5rem;
    
    /* Font Weights */
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    
    /* Line Heights */
    --line-height-tight: 1.2;
    --line-height-normal: 1.4;
    --line-height-relaxed: 1.6;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.3);
    
    /* Z-Index */
    --z-dropdown: 1000;
    --z-modal: 1000;
    --z-tooltip: 1000;
    
    /* Breakpoints */
    --breakpoint-sm: 480px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1200px;
    
    /* Layout */
    --container-max-width: 1200px;
    --header-padding: var(--spacing-3xl);
    --content-padding: var(--spacing-3xl);
    
    /* Form Elements */
    --input-padding: var(--spacing-md) var(--spacing-lg);
    --input-border-width: 2px;
    --button-padding: var(--spacing-md) var(--spacing-3xl);
    
    /* Table */
    --table-cell-padding: var(--spacing-md);
    --table-border-width: 1px;
    
    /* Simplified Color System */
    /* Red - Character modifications */
    --red: #7f1d1d;
    --red-hover: #991b1b;
    --red-light: #fca5a5;
    --red-border: #dc2626;
    
    /* Orange - Letter operations */
    --orange: #7c2d12;
    --orange-hover: #9a3412;
    --orange-light: #fed7aa;
    --orange-border: #ea580c;
    
    /* Green - Additions/substitutions */
    --green: #365314;
    --green-hover: #166534;
    --green-light: #bbf7d0;
    --green-border: #16a34a;
    
    /* Blue - Transpositions/phonetic */
    --blue: #1e3a8a;
    --blue-hover: #1e40af;
    --blue-light: #93c5fd;
    --blue-border: #2563eb;
    
    /* Purple - Vowel operations */
    --purple: #581c87;
    --purple-hover: #6b21a8;
    --purple-light: #d8b4fe;
    --purple-border: #9333ea;
    
    /* Pink - IDN/confusable */
    --pink: #be185d;
    --pink-hover: #9d174d;
    --pink-light: #f9a8d4;
    --pink-border: #e11d48;
    
    /* Teal - Hyphenation/affix */
    --teal: #0f766e;
    --teal-hover: #134e4a;
    --teal-light: #5eead4;
    --teal-border: #0d9488;
    
    /* RGBA Colors for overlays and transparency */
    --overlay-primary: rgba(59, 130, 246, 0.1);
    --overlay-primary-hover: rgba(59, 130, 246, 0.15);
    --overlay-secondary: rgba(16, 185, 129, 0.1);
    --overlay-secondary-focus: rgba(16, 185, 129, 0.2);
    --overlay-danger: rgba(239, 68, 68, 0.1);
    --overlay-white: rgba(255, 255, 255, 0.1);
    --overlay-white-light: rgba(255, 255, 255, 0.05);
    --overlay-white-border: rgba(255, 255, 255, 0.2);
    --overlay-dark: rgba(0, 0, 0, 0.7);
    --overlay-dark-light: rgba(0, 0, 0, 0.1);
}

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

/* Preview loading animation */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Preview row styling */
tr.taken {
    transition: background-color 0.2s ease;
}

tr.taken:hover {
    background-color: var(--overlay-primary);
}

tr.taken:focus {
    background-color: var(--overlay-primary-hover);
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.preview-icon {
    transition: opacity 0.2s ease;
}

tr.taken:hover .preview-icon {
    opacity: 1;
}

/* Sort and Filter Styles */
.sortable {
    transition: background-color 0.2s ease;
}

.sortable:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.sort-indicator {
    font-size: var(--font-sm);
    margin-left: 5px;
    opacity: 0.7;
    transition: opacity 0.2s ease;
}

.sortable:hover .sort-indicator {
    opacity: 1;
}

/* Filter Controls */
.filter-controls {
    display: none;
    margin: 15px 0;
    transition: all 0.3s ease;
}

/* Show filter controls when they have the 'open' attribute or when results are available */
.filter-controls[open] {
    display: block;
}

/* Show filter controls when results are available (controlled by JavaScript) */
.filter-controls.show-filters {
    display: block;
}

.filter-summary {
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    cursor: pointer;
    font-weight: var(--font-semibold);
    font-size: var(--font-lg);
    user-select: none;
    transition: var(--transition-fast);
    color: var(--text-primary);
    border: var(--table-border-width) solid var(--border-primary);
    list-style: none;
    outline: none;
}

.filter-summary::-webkit-details-marker {
    display: none;
}

.filter-summary::before {
    content: '▶';
    margin-right: var(--spacing-sm);
    transition: var(--transition-fast);
}

.filter-controls[open] .filter-summary::before {
    transform: rotate(90deg);
}

.filter-summary:hover {
    background-color: var(--border-primary);
}

.filter-content {
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    border: var(--table-border-width) solid var(--border-primary);
    border-top: none;
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-sm);
}

.filter-field {
    display: flex;
    flex-direction: column;
}

.filter-label {
    display: block;
    font-size: var(--font-sm);
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
    font-weight: var(--font-medium);
}

.filter-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: var(--table-border-width) solid var(--border-secondary);
    border-radius: var(--radius-md);
    background-color: var(--bg-quaternary);
    color: var(--text-primary);
    font-size: var(--font-base);
    transition: var(--transition-fast);
}

.filter-input:focus {
    outline: none;
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 2px var(--overlay-secondary-focus);
}

.filter-input::placeholder {
    color: var(--border-light);
}

.filter-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: var(--table-border-width) solid var(--border-secondary);
    border-radius: var(--radius-md);
    background-color: var(--bg-quaternary);
    color: var(--text-primary);
    font-size: var(--font-base);
    min-height: 80px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.filter-select:focus {
    outline: none;
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 2px var(--overlay-secondary-focus);
}

.filter-select option {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--bg-quaternary);
    color: var(--text-primary);
}

.filter-select option:checked {
    background-color: var(--color-secondary);
    color: var(--text-primary);
}

.filter-help {
    font-size: var(--font-xs);
    color: var(--border-light);
    margin-top: 4px;
    font-style: italic;
}

.filter-operators-help {
    background: var(--bg-secondary);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius-md);
    padding: 12px;
    margin: 15px 0;
    font-size: 13px;
    line-height: 1.4;
}

.filter-operators-help code {
    background: var(--border-secondary);
    padding: var(--spacing-xs) var(--spacing-xs);
    border-radius: var(--radius-sm);
    font-family: 'Courier New', monospace;
    font-size: var(--font-sm);
    color: var(--text-secondary);
}

.filter-actions {
    margin-top: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.clear-filters-btn {
    padding: 8px 16px;
    background: var(--border-secondary);
    color: var(--text-primary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: var(--font-base);
    font-weight: 500;
    transition: background-color 0.2s ease;
}

.clear-filters-btn:hover {
    background: var(--border-light);
}

.filtered-count {
    font-size: var(--font-sm);
    color: var(--text-muted);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: var(--line-height-relaxed);
    color: var(--text-primary);
    background: var(--bg-primary);
    min-height: 100vh;
    min-width: 400px;
}

#app {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: var(--spacing-xl);
}

/* Header */
.header {
    background: var(--bg-secondary);
    border-radius: var(--radius-3xl);
    padding: var(--header-padding);
    margin-bottom: var(--spacing-3xl);
    box-shadow: var(--shadow-lg);
    border: var(--table-border-width) solid var(--border-primary);
}

.title {
    color: var(--text-primary);
    font-size: var(--font-4xl);
    font-weight: var(--font-bold);
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    text-shadow: var(--shadow-sm);
}

.title a {
    text-decoration: none;
    color: inherit;
}

/* Search Form */
.search-form {
    background: var(--bg-tertiary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-md);
    border: var(--table-border-width) solid var(--border-primary);
}

.form-group {
    margin-bottom: var(--spacing-xl);
}

.form-group label {
    display: block;
    font-weight: var(--font-semibold);
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.form-group input[type="text"] {
    width: 100%;
    padding: var(--input-padding);
    border: var(--input-border-width) solid var(--border-secondary);
    border-radius: var(--radius-lg);
    font-size: var(--font-lg);
    transition: var(--transition-normal);
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.form-group input[type="text"]:focus {
    outline: var(--input-border-width) solid var(--color-primary);
    outline-offset: var(--input-border-width);
    border-color: var(--color-primary);
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-weight: var(--font-medium);
}

.checkbox-label input[type="checkbox"] {
    margin-right: var(--spacing-sm);
    transform: scale(1.2);
}

.btn-primary {
    background: var(--color-primary);
    color: var(--text-primary);
    border: var(--input-border-width) solid var(--color-primary);
    padding: var(--button-padding);
    border-radius: var(--radius-lg);
    font-size: var(--font-lg);
    font-weight: var(--font-semibold);
    cursor: pointer;
    transition: var(--transition-fast);
    width: 100%;
}

.btn-primary:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary:focus {
    outline: var(--input-border-width) solid var(--color-primary-light);
    outline-offset: var(--input-border-width);
}

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

/* Content */
.content {
    background: var(--bg-tertiary);
    border-radius: var(--radius-3xl);
    padding: var(--content-padding);
    box-shadow: var(--shadow-lg);
    border: var(--table-border-width) solid var(--border-primary);
}

.info-panel {
    background: var(--bg-quaternary);
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-3xl);
    border: var(--table-border-width) solid var(--border-primary);
}

.info-panel p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-light);
}

.info-panel p:last-child {
    margin-bottom: 0;
}

/* Results */
.results-container {
    position: relative;
}

.loader {
    text-align: center;
    padding: var(--spacing-4xl);
    background: var(--bg-quaternary);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-xl);
    border: var(--table-border-width) solid var(--border-primary);
}

.spinner {
    width: var(--spacing-4xl);
    height: var(--spacing-4xl);
    border: 4px solid var(--border-secondary);
    border-top: 4px solid var(--color-primary);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-xl);
}

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

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-secondary);
}

.results-header h2 {
    color: var(--text-primary);
    font-size: var(--font-2xl);
}

.stats {
    background: var(--color-primary);
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-pill);
    font-weight: var(--font-semibold);
    font-size: var(--font-sm);
    border: var(--input-border-width) solid var(--color-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.download-btn {
    background: var(--color-secondary);
    color: var(--text-primary);
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-pill);
    font-weight: var(--font-semibold);
    font-size: var(--font-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    border: var(--input-border-width) solid var(--color-secondary);
}

.download-btn:hover {
    background: var(--color-secondary-hover);
    border-color: var(--color-secondary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

/* Run Info Chips */
.run-info {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 12px 0 0 0;
}

.run-info .chip {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--bg-secondary);
    color: var(--text-dark); 
    border: var(--table-border-width) solid var(--border-primary);
    border-radius: 999px;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.85rem;
    line-height: 1;
}

.run-info .chip .chip-icon {
    display: inline-flex;
    width: var(--spacing-lg);
    height: var(--spacing-lg);
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--border-primary);
    color: var(--text-dark);
    font-weight: 700;
    font-size: var(--font-xs);
}

/* Timing Display */
.timing-display {
    background: transparent;
    border: none;
    padding: 10px 0;
    margin: 15px 0 0 0;
    text-align: center;
    animation: fadeIn 0.3s ease;
    opacity: 0.7;
}

.timing-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: nowrap;
}

.timing-label {
    color: #999;
    font-weight: 400;
    font-size: 0.85rem;
}

.timing-value {
    background: #e9ecef;
    color: #6c757d;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-2xl);
    font-weight: 500;
    font-size: 0.8rem;
    border: 1px solid #dee2e6;
}

/* Table */
.table-container {
    overflow-x: auto;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-tertiary);
    border: var(--table-border-width) solid var(--border-primary);
}

th {
    background: var(--bg-tertiary);
    padding: var(--spacing-md);
    text-align: left;
    font-weight: var(--font-semibold);
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border-secondary);
}

td {
    padding: var(--table-cell-padding);
    border-bottom: var(--table-border-width) solid var(--border-secondary);
    vertical-align: top;
    color: var(--text-primary);
}

tr.available {
    background: var(--color-success-bg);
    color: var(--color-success);
    border-left: 3px solid var(--color-success-border);
}

tr.available:hover {
    background: var(--color-success-hover);
}

tr.taken {
    background: var(--color-danger-bg);
    color: #f87171;
    border-left: 3px solid var(--color-danger-border);
}

tr.taken:hover {
    background: var(--color-danger-hover);
}

/* Removed alternating colors for original domains */

tr:hover {
    background: var(--bg-tertiary);
}

/* Variation tooltips */
.variation-tooltip {
    position: relative;
}

.variation-tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--text-dark);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-sm);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
    z-index: 1000;
    pointer-events: none;
    max-width: 300px;
    white-space: normal;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.variation-tooltip::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(100%);
    border: 5px solid transparent;
    border-top-color: var(--text-dark);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
    z-index: 1000;
    pointer-events: none;
}

.variation-tooltip:hover::after,
.variation-tooltip:hover::before {
    opacity: 1;
    visibility: visible;
}

/* Disabled button styling */
button[type="submit"]:disabled {
    background: var(--border-secondary) !important;
    color: var(--text-muted) !important;
    cursor: not-allowed !important;
    opacity: 0.6 !important;
    border-color: var(--border-secondary) !important;
}

button[type="submit"]:disabled:hover {
    background: var(--border-secondary) !important;
    color: var(--text-muted) !important;
    transform: none !important;
    box-shadow: none !important;
}

/* Responsive */
@media (max-width: 768px) {
    #app {
        padding: var(--spacing-sm);
    }
    
    .header {
        padding: var(--spacing-xl);
    }
    
    .title {
        font-size: var(--font-3xl);
    }
    
    .content {
        padding: var(--spacing-xl);
    }
    
    .results-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    table {
        font-size: var(--font-sm);
    }
    
    th, td {
        padding: var(--spacing-sm) var(--spacing-xs);
    }
    
    .timing-info {
        flex-direction: row;
        gap: var(--spacing-xs);
    }
    
    .timing-display {
        margin: var(--spacing-sm) 0 0 0;
        padding: var(--spacing-sm) 0;
    }
    
    .timing-label {
        font-size: var(--font-xs);
    }
    
    .timing-value {
        font-size: var(--font-xs);
        padding: var(--spacing-xs) var(--spacing-xs);
    }
}

/* Loading animation */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

tr {
    animation: fadeIn 0.3s ease;
}

/* Error Overlay */
.error-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--overlay-dark);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.error-modal {
    background: white;
    border-radius: 15px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    animation: slideIn 0.3s ease;
}

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

.error-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    border-bottom: 1px solid #e1e5e9;
    background: #f8f9fa;
    border-radius: 15px 15px 0 0;
}

.error-header h3 {
    margin: 0;
    color: #dc3545;
    font-size: 1.3rem;
}

.close-btn {
    background: none;
    border: none;
    font-size: 24px;
    color: #666;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.2s ease;
}

.close-btn:hover {
    background-color: #f0f0f0;
}

.error-content {
    padding: 25px;
}

.error-content p {
    margin: 0 0 20px 0;
    color: #333;
    font-size: 1.1rem;
    line-height: 1.5;
}

.error-details {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.error-details h4 {
    margin: 0 0 10px 0;
    color: #555;
    font-size: 1rem;
}

.error-details ul {
    margin: 0;
    padding-left: 20px;
    color: #666;
}

.error-details li {
    margin-bottom: 5px;
}

.error-footer {
    padding: 20px 25px;
    border-top: 1px solid #e1e5e9;
    text-align: right;
    background: #f8f9fa;
    border-radius: 0 0 15px 15px;
}

.error-footer .btn-primary {
    width: auto;
    padding: 10px 20px;
    margin: 0;
}

/* Responsive error modal */
@media (max-width: 768px) {
    .error-modal {
        width: 95%;
        margin: 20px;
    }
    
    .error-header,
    .error-content,
    .error-footer {
        padding: 15px;
    }
}

/* Enhanced variation options styling */
#variation-options {
    background: #1e293b;
    border-radius: 8px;
    padding: 15px;
    border: 1px solid #334155;
    margin-top: 15px;
}

#variation-options > div[style*="grid-template-columns"] {
    display: grid !important;
    grid-template-columns: repeat(4, 1fr) !important;
    gap: 8px !important;
    margin-top: 12px !important;
}

/* Responsive grid for variation options */
@media (max-width: 1024px) {
    #variation-options > div[style*="grid-template-columns"] {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

@media (max-width: 768px) {
    #variation-options > div[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
    }
}

.variation-tooltip {
    position: relative;
    transition: all 0.2s ease;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
}

.variation-tooltip:hover {
    background: var(--overlay-primary);
}

.variation-tooltip[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: #0f172a;
    color: var(--text-primary);
    padding: 12px 16px;
    border-radius: 8px;
    font-size: var(--font-base);
    white-space: nowrap;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    border: 2px solid #3b82f6;
    min-width: 300px;
    max-width: 500px;
    white-space: normal;
    text-align: left;
    line-height: 1.5;
}

.variation-tooltip[data-tooltip]:hover::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(100%);
    border: 5px solid transparent;
    border-top-color: #0f172a;
    z-index: 1000;
}

/* Variation limit warning */
#variation-limit-warning {
    background: var(--overlay-danger);
    border: var(--table-border-width) solid var(--color-danger);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    margin-top: 10px;
    font-size: var(--font-base);
    font-weight: 500;
}

/* Variation chips styling */
.variations .chip {
    background: var(--overlay-primary);
    border: var(--table-border-width) solid var(--color-primary);
    color: var(--color-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-sm);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.variations .chip .chip-icon {
    font-weight: bold;
}

/* Variation row styling - different colors for each variation type */
/* Red - Character modifications */
tr.variation_single_bit {
    background: var(--red) !important;
    color: var(--red-light) !important;
    border-left: 3px solid var(--red-border) !important;
}

/* Orange - Letter operations */
tr.variation_double_letter,
tr.variation_missing_letter,
tr.variation_keyboard_typo,
tr.variation_leetspeak,
tr.variation_dehyphenation {
    background: var(--orange) !important;
    color: var(--orange-light) !important;
    border-left: 3px solid var(--orange-border) !important;
}

/* Green - Additions/substitutions */
tr.variation_extra_letter,
tr.variation_number_substitution,
tr.variation_affix {
    background: var(--green) !important;
    color: var(--green-light) !important;
    border-left: 3px solid var(--green-border) !important;
}

/* Blue - Transpositions/phonetic */
tr.variation_transpose,
tr.variation_phonetic,
tr.variation_vowel_drop {
    background: var(--blue) !important;
    color: var(--blue-light) !important;
    border-left: 3px solid var(--blue-border) !important;
}

/* Purple - Vowel operations */
tr.variation_vowel_swap,
tr.variation_suffix_prefix {
    background: var(--purple) !important;
    color: var(--purple-light) !important;
    border-left: 3px solid var(--purple-border) !important;
}

/* Pink - IDN/confusable */
tr.variation_idn_homograph,
tr.variation_context_aware {
    background: var(--pink) !important;
    color: var(--pink-light) !important;
    border-left: 3px solid var(--pink-border) !important;
}

/* Teal - Hyphenation/affix */
tr.variation_hyphenation,
tr.variation_multi_char_confusable {
    background: var(--teal) !important;
    color: var(--teal-light) !important;
    border-left: 3px solid var(--teal-border) !important;
}

/* All individual variation styles are now consolidated above */

/* Hover effects for variation rows */
tr.variation_single_bit:hover {
    background: var(--red-hover) !important;
}

tr.variation_double_letter:hover,
tr.variation_missing_letter:hover,
tr.variation_keyboard_typo:hover,
tr.variation_leetspeak:hover,
tr.variation_dehyphenation:hover {
    background: var(--orange-hover) !important;
}

tr.variation_extra_letter:hover,
tr.variation_number_substitution:hover,
tr.variation_affix:hover {
    background: var(--green-hover) !important;
}

tr.variation_transpose:hover,
tr.variation_phonetic:hover,
tr.variation_vowel_drop:hover {
    background: var(--blue-hover) !important;
}

tr.variation_vowel_swap:hover,
tr.variation_suffix_prefix:hover {
    background: var(--purple-hover) !important;
}

tr.variation_idn_homograph:hover,
tr.variation_context_aware:hover {
    background: var(--pink-hover) !important;
}

tr.variation_hyphenation:hover,
tr.variation_multi_char_confusable:hover {
    background: var(--teal-hover) !important;
}

/* All old individual hover effects are now consolidated above */

/* All numbered variation styles removed - using simplified color themes above */

/* Multi-domain color schemes - using existing color variables */
/* Domain 0 - Red theme */
tr.domain_0 {
    background: var(--red) !important;
    color: var(--red-light) !important;
    border-left: 3px solid var(--red-border) !important;
}

tr.domain_0:hover {
    background: var(--red-hover) !important;
}

/* Domain 1 - Orange theme */
tr.domain_1 {
    background: var(--orange) !important;
    color: var(--orange-light) !important;
    border-left: 3px solid var(--orange-border) !important;
}

tr.domain_1:hover {
    background: var(--orange-hover) !important;
}

/* Domain 2 - Green theme */
tr.domain_2 {
    background: var(--green) !important;
    color: var(--green-light) !important;
    border-left: 3px solid var(--green-border) !important;
}

tr.domain_2:hover {
    background: var(--green-hover) !important;
}

/* Domain 3 - Blue theme */
tr.domain_3 {
    background: var(--blue) !important;
    color: var(--blue-light) !important;
    border-left: 3px solid var(--blue-border) !important;
}

tr.domain_3:hover {
    background: var(--blue-hover) !important;
}

/* Domain 4 - Purple theme */
tr.domain_4 {
    background: var(--purple) !important;
    color: var(--purple-light) !important;
    border-left: 3px solid var(--purple-border) !important;
}

tr.domain_4:hover {
    background: var(--purple-hover) !important;
}

/* Domain 5 - Pink theme */
tr.domain_5 {
    background: var(--pink) !important;
    color: var(--pink-light) !important;
    border-left: 3px solid var(--pink-border) !important;
}

tr.domain_5:hover {
    background: var(--pink-hover) !important;
}

/* Services column styling */
#services-header {
    text-align: right !important;
    width: 192px;
    min-width: 192px;
    max-width: 192px;
    padding-right: var(--spacing-md) !important;
}

/* Services header with class */
th.services-header {
    text-align: right !important;
    width: 192px;
    min-width: 192px;
    max-width: 192px;
    padding-right: var(--spacing-md) !important;
}

/* Services column data cells */
.services-cell {
    text-align: right;
    width: 192px;
    min-width: 192px;
    max-width: 192px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding-right: var(--spacing-md);
}

/* Rate Limit Counter */
#rate-limit-counter {
    position: unset;
    bottom: var(--spacing-sm);
    right: var(--spacing-sm);
    background: var(--bg-overlay);
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-sm);
    font-family: monospace;
    z-index: var(--z-tooltip);
    display: none;
    max-width: 200px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

#rate-limit-reset {
    font-size: var(--font-xs);
    opacity: 0.8;
    margin-top: var(--spacing-xs);
}

#sub-frame-error-details {
    margin: 0 var(--spacing-sm);
    text-align: center;
    color: var(--text-dark);
    font-size: x-large;
}

/* Variations Selection Styles */
.variations {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-lg);
    background: var(--overlay-white-light);
    border: var(--table-border-width) solid var(--overlay-white);
    border-radius: var(--radius-lg);
    display: none;
    backdrop-filter: blur(10px);
}

.variations-header {
    margin-bottom: var(--spacing-md);
    font-size: var(--font-base);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
}

.variations-tip {
    margin: var(--spacing-sm) 0;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(74, 144, 226, 0.1);
    border: var(--table-border-width) solid rgba(74, 144, 226, 0.3);
    border-radius: var(--radius-sm);
    font-size: var(--font-sm);
    color: var(--text-muted);
}

.variations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.variation-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    border: var(--table-border-width) solid var(--overlay-white);
    border-radius: var(--radius-md);
    background: var(--overlay-white-light);
    transition: var(--transition-fast);
    cursor: pointer;
    min-height: auto;
    overflow: auto;
}

.variation-item:hover {
    border-color: rgba(74, 144, 226, 0.5);
    background: rgba(74, 144, 226, 0.1);
}

.variation-item.selected {
    border-color: var(--color-primary);
    background: rgba(74, 144, 226, 0.15);
    box-shadow: 0 0 0 1px rgba(74, 144, 226, 0.3);
}

.variation-item.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    background: rgba(255, 255, 255, 0.02);
}

.variation-item.edited {
    border-color: var(--color-secondary);
    background: var(--overlay-secondary);
    cursor: default;
}

.variation-item.edited.selected {
    cursor: not-allowed;
    opacity: 0.9;
}

.variation-item.invalid {
    border-color: #ef4444;
    background: var(--overlay-danger);
}

/* Selection indicator - now just a visual indicator */
.variation-item::before {
    content: '';
    position: absolute;
    top: 4px;
    right: 4px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: transparent;
    border: 2px solid transparent;
    transition: all 0.2s ease;
    pointer-events: none;
}

.variation-item.selected::before {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.variation-item.disabled::before {
    opacity: 0.4;
}

.variation-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: var(--table-border-width) solid var(--overlay-white-border);
    border-radius: var(--radius-sm);
    font-size: var(--font-sm);
    background: var(--overlay-white);
    color: var(--text-secondary);
    transition: var(--transition-fast);
    box-sizing: border-box;
}

.variation-input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 0 0 2px rgba(74, 144, 226, 0.2);
}

.variation-input::placeholder {
    color: var(--text-muted);
}

.variation-item.edited .variation-input {
    border-color: var(--color-secondary);
    background: var(--overlay-secondary);
}

.variation-item.invalid .variation-input {
    border-color: var(--color-danger);
    background: var(--overlay-danger);
}

.edit-indicator {
    font-size: var(--font-xs);
    font-weight: 500;
    opacity: 0;
    transition: opacity 0.2s ease;
    min-width: 50px;
    text-align: right;
    flex-shrink: 0;
}

.variation-item.edited .edit-indicator {
    opacity: 1;
    color: var(--color-secondary);
}

.variation-item.invalid .edit-indicator {
    opacity: 1;
    color: var(--color-danger);
}

.variations-actions {
    margin-top: 12px;
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.variations-actions .btn-primary {
    margin-right: 0;
    font-size: 13px;
    padding: 8px 16px;
}

.variations-actions .btn-secondary {
    font-size: 13px;
    padding: 8px 16px;
}

/* Responsive design for variations */
@media (max-width: 768px) {
    .variations {
        margin: 12px 0;
        padding: 12px;
    }
    
    .variations-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xs);
    }
    
    .variation-item {
        padding: 6px;
        min-height: 36px;
    }
    
    .variation-input {
        font-size: var(--font-sm);
        padding: 5px 6px;
    }
    
    .variations-actions {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-xs);
    }
    
    .variations-actions .btn-primary,
    .variations-actions .btn-secondary {
        width: 100%;
        margin-right: 0;
        font-size: var(--font-sm);
        padding: 6px 12px;
    }
}

@media (max-width: 600px) {
    .variations-grid {
        display: inline-block;
        width: 100%;
    }
    
    .variation-item {
        display: inline-block;
        width: calc(50% - 4px);
        margin: 2px;
        vertical-align: top;
    }
}

@media (max-width: 480px) {
    .variations-grid {
        display: block;
    }
    
    .variation-item {
        display: block;
        width: 100%;
        margin: 2px 0;
    }
    
    .variation-input {
        width: 100%;
    }
}

/* Focus styles for accessibility */
.variation-item:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.variation-item:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

/* Form Legend Styles */
.legend {
    margin-top: 10px;
    display: none;
    font-size: var(--font-sm);
    font-style: italic;
}

#services-legend {
    font-style: normal;
}

.services-grid {
    margin-top: var(--spacing-sm);
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
}

.service-item {
    font-size: var(--font-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* Variation Options Styles */
.variation-options {
    margin-top: 10px;
    display: none;
}

.variation-info {
    background: var(--color-primary);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    padding: 12px;
    margin: 10px 0;
    font-size: 13px;
}


.variation-tooltip {
    font-size: var(--font-base);
    margin: 0;
    cursor: help;
}

.ai-variations-info {
    margin-top: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    background-color: var(--bg-quaternary);
    border: var(--table-border-width) solid var(--color-primary);
    border-radius: var(--radius-sm);
}

.ai-variation-label {
    font-weight: bold;
    color: var(--color-primary);
}

.variation-warning {
    font-size: var(--font-sm);
    font-style: italic;
}

.variation-limit-warning {
    color: var(--color-danger);
    margin-top: 5px;
    display: none;
}

/* Title Link */
.title-link {
    color: white;
}

/* Current Variation */
.current-variation {
    display: none;
    margin-top: var(--spacing-sm);
    font-size: var(--font-base);
    color: var(--text-muted);
    font-style: italic;
}

/* Variation Progress */
.variation-progress {
    display: none;
    margin-top: var(--spacing-sm);
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.variation-progress > div {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.variation-chip {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-2xl);
    font-size: var(--font-sm);
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid transparent;
    display: inline-block;
    margin: 2px;
}

.variation-chip.pending {
    background: var(--overlay-white);
    color: var(--text-secondary);
    border-color: rgba(255, 255, 255, 0.2);
}

.variation-chip.current {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.3);
    animation: currentPulse 2s ease-in-out infinite;
}

@keyframes currentPulse {
    0% { 
        box-shadow: 0 0 0 1px rgba(16, 185, 129, 0.3);
    }
    50% { 
        box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.6);
    }
    100% { 
        box-shadow: 0 0 0 1px rgba(16, 185, 129, 0.3);
    }
}

.variation-chip.completed {
    background: var(--color-secondary);
    color: var(--text-primary);
    border-color: var(--color-secondary);
    opacity: 1;
}

/* Table Headers */
.sortable {
    cursor: pointer;
    user-select: none;
}

#registrar-header,
#registrant-header {
    visibility: hidden;
}

#services-header {
    display: none;
}

/* Hidden Elements */
#loader,
#run-info,
#timing-display,
#error-overlay {
    display: none;
}

/* Download CSV button - hidden by default, shown when results are available */
#download-csv {
    display: none;
}

/* About Section */
.about-section {
    margin-top: 30px;
    padding: 20px;
    text-align: center;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: var(--table-border-width) solid var(--border-primary);
    opacity: 0.9;
}

.about-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-sm);
    font-weight: var(--font-medium);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    border: var(--table-border-width) solid var(--border-secondary);
    background: var(--bg-tertiary);
    transition: var(--transition-fast);
    display: inline-block;
}

.about-link:hover {
    color: var(--text-primary);
    background: var(--border-primary);
    border-color: var(--border-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}