/* Number Sequence Calculator Styles */

/* Sequence Display Styles */
.sequence-display {
    background-color: var(--card-background);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
    line-height: 1.8;
    max-height: 200px;
    overflow-y: auto;
    margin-top: 10px;
    word-wrap: break-word;
}

.sequence-number {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 4px 8px;
    margin: 2px 4px;
    border-radius: 4px;
    font-weight: bold;
}

.sequence-number.missing {
    background-color: var(--warning-color, #ff9800);
    color: white;
}

.sequence-number.generated {
    background-color: var(--success-color, #4caf50);
    color: white;
}

.sequence-number.pattern-highlight {
    background-color: var(--accent-color, #2196f3);
    color: white;
    box-shadow: 0 0 8px rgba(33, 150, 243, 0.5);
}

/* Form Enhancements */
.checkbox-group {
    display: flex;
    align-items: center;
    margin: 10px 0;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    font-weight: normal;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    margin-right: 8px;
    transform: scale(1.2);
}

/* Results Grid Enhancements */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.result-item {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.result-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.result-item h4 {
    color: var(--primary-color);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 8px;
    margin-bottom: 15px;
}

/* Formula Display */
#formulaDisplay {
    background-color: var(--code-background, #f5f5f5);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--code-color, #d63384);
    text-align: center;
}

/* Pattern Type Display */
#patternType {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary-color);
    text-transform: capitalize;
    background-color: var(--light-background, #f8f9fa);
    padding: 10px;
    border-radius: 6px;
    text-align: center;
}

/* Statistics Display */
#statisticsDisplay {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 10px;
}

.stat-item {
    background-color: var(--light-background, #f8f9fa);
    padding: 8px;
    border-radius: 4px;
    text-align: center;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted, #666);
    display: block;
}

.stat-value {
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--primary-color);
}

/* Export Section */
.export-section {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

.export-section button {
    min-width: 140px;
}

/* Pattern Explanation Styling */
#explanationDisplay {
    line-height: 1.6;
    background-color: var(--info-background, #e3f2fd);
    border: 1px solid var(--info-border, #2196f3);
    border-radius: 6px;
    padding: 15px;
}

/* Missing Terms Display */
#missingTermsDisplay {
    font-family: 'Courier New', monospace;
    background-color: var(--warning-background, #fff3e0);
    border: 1px solid var(--warning-border, #ff9800);
    border-radius: 6px;
    padding: 12px;
    font-weight: bold;
}

/* Generation Options Toggle */
#generationOptions {
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
        padding: 0;
    }
    to {
        opacity: 1;
        max-height: 300px;
        padding: 15px;
    }
}

/* Input Field Enhancements */
#sequenceInput {
    font-family: 'Courier New', monospace;
    font-size: 1rem;
    padding: 12px;
}

#sequenceInput:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb, 74, 144, 226), 0.1);
}

/* Small Helper Text */
small {
    display: block;
    margin-top: 5px;
    color: var(--text-muted, #666);
    font-style: italic;
}

/* Button Groups */
.form-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 25px;
}

.form-actions button {
    min-width: 140px;
}

/* Error Messages Enhancement */
.error-messages {
    background-color: var(--error-background, #ffebee);
    border: 1px solid var(--error-border, #f44336);
    color: var(--error-color, #d32f2f);
    border-radius: 6px;
    padding: 12px;
    margin-bottom: 20px;
}

.error-messages ul {
    margin: 0;
    padding-left: 20px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .results-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .form-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .form-actions button {
        width: 100%;
        min-width: auto;
    }
    
    .export-section {
        flex-direction: column;
        align-items: stretch;
    }
    
    .export-section button {
        width: 100%;
        min-width: auto;
    }
    
    .sequence-display {
        font-size: 1rem;
        padding: 12px;
    }
    
    .sequence-number {
        padding: 3px 6px;
        margin: 1px 2px;
        font-size: 0.9rem;
    }
    
    #statisticsDisplay {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .sequence-display {
        font-size: 0.9rem;
        padding: 10px;
    }
    
    .sequence-number {
        padding: 2px 4px;
        margin: 1px;
        font-size: 0.8rem;
    }
    
    #statisticsDisplay {
        grid-template-columns: 1fr;
    }
    
    .stat-item {
        padding: 6px;
    }
}

/* Dark Mode Specific Adjustments */
@media (prefers-color-scheme: dark) {
    .sequence-display {
        background-color: var(--dark-card-background);
        border-color: var(--dark-border-color);
    }
    
    #formulaDisplay {
        background-color: var(--dark-code-background);
        color: var(--dark-code-color);
    }
    
    .stat-item {
        background-color: var(--dark-light-background);
    }
}

/* Focus States for Accessibility */
.sequence-number:focus,
button:focus,
input:focus,
select:focus {
    outline: 2px solid var(--focus-color, #2196f3);
    outline-offset: 2px;
}

/* Loading State */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

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

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Print Styles */
@media print {
    .form-actions,
    .export-section,
    .calculator-form {
        display: none;
    }
    
    .results-section {
        display: block !important;
    }
    
    .sequence-display {
        border: 1px solid #000;
        font-size: 12pt;
    }
    
    .sequence-number {
        background-color: #f0f0f0 !important;
        color: #000 !important;
        border: 1px solid #000;
    }
}