/* ==========================================================================
   Harvard Reference Generator - Tool-Specific Styles
   
   IMPORTANT: The design system already provides:
   - All colors via CSS variables
   - Nav, hero, buttons, inputs, file upload zones
   - Section spacing and layout
   
   DO NOT:
   - Add background colors to .input-section or .output-section
   - Add borders to sections
   - Add padding to sections (use input-group for internal spacing)
   - Override design system colors
   ========================================================================== */

/* === PRO HEADERS === */
.pro-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.pro-header h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 600;
}

/* === PREVIEW CONTAINERS === */
.preview-container {
    min-height: 200px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-empty {
    text-align: center;
    color: var(--text-tertiary);
}

.preview-empty p {
    font-size: 14px;
    margin: 0;
}

/* === TEXT INPUT AREA === */
.text-input-area {
    margin-top: var(--space-lg);
}

.text-input-area label {
    display: block;
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}

/* === LOOKUP ROW === */
.lookup-row {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

.lookup-row .text-input {
    flex: 1;
}

.lookup-row .button-secondary {
    flex-shrink: 0;
}

.input-help {
    font-size: 13px;
    color: var(--text-tertiary);
    margin-top: var(--space-sm);
    margin-bottom: 0;
}

/* === DYNAMIC FORM FIELDS === */
.form-fields {
    margin-top: var(--space-lg);
}

.field-row {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.field-group {
    flex: 1;
}

.field-group label {
    display: block;
    margin-bottom: var(--space-xs);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}

.required {
    color: var(--color-error, #ef4444);
}

/* === SCAN RESULTS === */
.scan-results h4 {
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.scan-highlight-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    width: 100%;
}

.highlight-item {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    border-left: 4px solid var(--color-primary);
}

.highlight-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm);
}

.highlight-type {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 4px 8px;
    border-radius: 4px;
    background: var(--color-primary);
    color: white;
}

.highlight-number {
    font-size: 12px;
    color: var(--text-tertiary);
    font-weight: 500;
}

.highlight-text {
    font-size: 14px;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    line-height: 1.5;
    font-style: italic;
    font-weight: 600;
}

.highlight-context {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
    padding: var(--space-sm);
    background: var(--bg-tertiary);
    border-radius: 4px;
    border-left: 3px solid var(--border-default);
    font-family: var(--font-mono, 'SF Mono', 'Monaco', 'Cascadia Code', monospace);
    line-height: 1.4;
}

.highlight-suggestion {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* === RESULT TABS === */
.result-tabs {
    display: flex;
    margin-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border-default);
}

.tab-button {
    background: none;
    border: none;
    padding: var(--space-md) var(--space-lg);
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s ease;
    font-size: 14px;
    font-weight: 500;
}

.tab-button:hover {
    color: var(--text-primary);
}

.tab-button.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.tab-content {
    display: none;
}

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

/* === CITATION EXAMPLES === */
.citation-examples {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    width: 100%;
    padding: var(--space-lg);
}

.citation-type h5 {
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.citation-output {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    font-family: 'Courier New', monospace;
    font-size: 13px;
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
}

.citation-output .preview-empty {
    color: var(--text-tertiary);
    font-family: var(--font-ui);
    font-style: italic;
}

/* === ACTION BUTTONS === */
.action-buttons {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.action-buttons .button-secondary,
.action-buttons .button-download {
    flex: 1;
}

/* === BIBLIOGRAPHY === */
.bibliography-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    width: 100%;
}

.bibliography-item {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    border-left: 3px solid var(--color-success);
}

.bibliography-text {
    font-size: 14px;
    color: var(--text-primary);
    line-height: 1.5;
    margin: 0;
}

/* === EXAMPLES SECTION === */
.examples-section {
    margin-top: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-subtle);
}

.examples-section h4 {
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: var(--space-lg);
}

.example-grid {
    display: grid;
    gap: var(--space-lg);
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.example-item {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    border: 1px solid var(--border-subtle);
}

.example-item h5 {
    color: var(--color-primary);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.example-item p {
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

.example-item em {
    font-style: italic;
}

/* === PRO FEATURES === */
.pro-features {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.pro-features .button-secondary {
    flex: 1;
}

/* === ERROR STATES === */
.input-error {
    color: var(--color-error, #ef4444);
    font-size: 13px;
    margin-top: var(--space-xs);
}

.input-group.has-error .text-input,
.input-group.has-error .text-area,
.input-group.has-error .file-upload-zone {
    border-color: var(--color-error, #ef4444);
}

/* === LOADING STATES === */
.button-primary.is-loading .button-text,
.button-secondary.is-loading .button-text {
    visibility: hidden;
}

.button-primary.is-loading .button-spinner,
.button-secondary.is-loading .button-spinner {
    display: block;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.button-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.button-primary,
.button-secondary {
    position: relative;
}

/* === HIDDEN FORM FIELDS === */
.form-fields:not(.book-fields) {
    display: none;
}

.form-fields.journal-fields,
.form-fields.website-fields,
.form-fields.newspaper-fields,
.form-fields.thesis-fields,
.form-fields.report-fields {
    display: none;
}

.form-fields.active {
    display: block;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .field-row {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .lookup-row {
        flex-direction: column;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .pro-features {
        flex-direction: column;
    }
    
    .example-grid {
        grid-template-columns: 1fr;
    }
    
    .result-tabs {
        justify-content: stretch;
    }
    
    .tab-button {
        flex: 1;
        text-align: center;
    }
}