/* ============================================
   Image to ASCII Art Converter - Stylesheet
   Tool prefix: ita-
   Primary: #3399cc (--color-2 blue)
   Loads AFTER custom_styles.css
   ============================================ */

/* Tool-scoped color override */
.ita-wrap {
    --primary: #3399cc;
    --primary-light: #dbeafe;
    --primary-dark: #2271a3;
    --accent: #3399cc;
    --success: #339966;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --danger: #e64e4e;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    --ascii-bg: #1a1a2e;
    --ascii-text: #00ff88;
    --ascii-bg-light: #f8fafc;
    --ascii-text-light: #1e293b;
}

[data-theme="dark"] .ita-wrap {
    --primary: #5bb3e0;
    --primary-light: #1e3a52;
    --primary-dark: #7bc7ea;
    --ascii-bg: #0a0a1a;
    --ascii-bg-light: #1e293b;
    --ascii-text-light: #e2e8f0;
}

/* Wrap the tool sections */
.ita-wrap {
    color: var(--text);
}

/* ============================================
   HEADER OVERRIDES
   ============================================ */

/* Override gradient text with solid color */
.ita-wrap .tool-title {
    color: var(--primary) !important;
    background: none !important;
    -webkit-background-clip: unset !important;
    -webkit-text-fill-color: unset !important;
    background-clip: unset !important;
}

/* Solid icon wrapper - no gradient */
.ita-wrap .tool-icon-wrapper {
    background: var(--primary) !important;
    box-shadow: 0 4px 14px rgba(51, 153, 204, 0.3) !important;
}

/* Description max-width */
.ita-wrap .tool-description {
    max-width: 800px;
}

/* ============================================
   TOOL MAIN AREA
   Override overflow:hidden from custom_styles
   so scrollable panels inside work correctly
   ============================================ */
.ita-wrap .tool-main {
    overflow: visible !important;
    background: var(--bg-elevated);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
}

/* ============================================
   UPLOAD SECTION
   ============================================ */
.ita-upload-section {
    padding: 3rem;
}

.ita-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 4rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--bg-elevated);
    position: relative;
    overflow: hidden;
}

[data-theme="dark"] .ita-upload-area {
    background: var(--card-bg);
}

.ita-upload-area:hover,
.ita-upload-area.dragover {
    border-color: var(--primary);
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.ita-upload-content {
    position: relative;
    z-index: 1;
}

.ita-upload-icon {
    color: var(--primary);
    margin-bottom: 1.5rem;
    transition: transform 0.3s ease;
}

.ita-upload-area:hover .ita-upload-icon {
    transform: translateY(-5px);
}

.ita-upload-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 0.5rem;
}

.ita-upload-subtitle {
    color: var(--text-secondary);
    margin: 0 0 1rem;
    font-size: 1rem;
}

.ita-upload-hint {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--primary-light);
    color: var(--primary-dark);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
}

[data-theme="dark"] .ita-upload-hint {
    color: var(--primary);
}

.ita-upload-hint i,
.ita-upload-hint svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

/* ============================================
   EDITOR SECTION
   ============================================ */
.ita-editor-section {
    padding: 0;
    animation: ita-fadeIn 0.4s ease;
}

@keyframes ita-fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ============================================
   PREVIEW AREA
   ============================================ */
.ita-preview-area {
    padding: 1.5rem;
    background: var(--card-secondary);
    border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] .ita-preview-area {
    background: var(--card-bg);
}

.ita-preview-panels {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 1.5rem;
    min-height: 400px;
}

.ita-preview-panel {
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.ita-preview-panel .ita-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: var(--primary-light);
    border-bottom: 1px solid var(--border-color);
}

.ita-preview-panel .ita-panel-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text);
    margin: 0;
}

.ita-preview-panel .ita-panel-header h3 svg,
.ita-preview-panel .ita-panel-header h3 i {
    color: var(--primary);
    width: 18px;
    height: 18px;
}

.ita-image-info {
    font-size: 0.8rem;
    color: var(--text-muted);
    background: var(--bg-elevated);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
}

.ita-panel-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    overflow: hidden;
    min-height: 0;
}

/* Checkerboard for original image */
.ita-original-panel .ita-panel-content {
    background-color: #f0f0f0;
    background-image:
        linear-gradient(45deg, #e0e0e0 25%, transparent 25%),
        linear-gradient(-45deg, #e0e0e0 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #e0e0e0 75%),
        linear-gradient(-45deg, transparent 75%, #e0e0e0 75%);
    background-size: 16px 16px;
    background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
}

[data-theme="dark"] .ita-original-panel .ita-panel-content {
    background-color: #1a1a2e;
    background-image:
        linear-gradient(45deg, #2a2a3e 25%, transparent 25%),
        linear-gradient(-45deg, #2a2a3e 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #2a2a3e 75%),
        linear-gradient(-45deg, transparent 75%, #2a2a3e 75%);
}

#originalImage {
    max-width: 100%;
    max-height: 350px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

/* ASCII panel */
.ita-ascii-panel .ita-panel-content {
    padding: 0;
    overflow: auto;
    align-items: flex-start;
    justify-content: flex-start;
}

.ita-ascii-content {
    width: 100%;
    height: 100%;
    min-height: 350px;
    overflow: auto;
    background: var(--ascii-bg);
    transition: background-color 0.3s ease;
}

.ita-ascii-content.ita-light-bg {
    background: var(--ascii-bg-light);
}

.ita-ascii-art {
    margin: 0;
    padding: 1rem;
    font-family: 'Courier New', 'Consolas', 'Monaco', monospace;
    font-size: 6px;
    line-height: 1;
    letter-spacing: 0;
    white-space: pre;
    color: var(--ascii-text);
    transition: color 0.3s ease, font-size 0.2s ease;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.ita-ascii-content.ita-light-bg .ita-ascii-art {
    color: var(--ascii-text-light);
}

/* ASCII panel header actions */
.ita-ascii-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.ita-btn-icon {
    width: 28px;
    height: 28px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-elevated);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.ita-btn-icon:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.ita-zoom-level {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    min-width: 40px;
    text-align: center;
}

.ita-ascii-info {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--primary);
    background: var(--primary-light);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    margin-right: 0.5rem;
    white-space: nowrap;
}

.ita-ascii-info:empty {
    display: none;
}

/* ============================================
   SETTINGS PANEL
   ============================================ */
.ita-settings-panel {
    padding: 1.5rem 2rem;
}

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

.ita-settings-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text);
    margin: 0;
}

.ita-settings-header h3 svg,
.ita-settings-header h3 i {
    color: var(--primary);
    width: 20px;
    height: 20px;
}

.ita-btn-reset {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    background: none;
    border: none;
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.ita-btn-reset:hover {
    background: var(--primary-light);
}

/* Settings grid */
.ita-settings-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 2rem;
}

@media (max-width: 700px) {
    .ita-settings-grid {
        grid-template-columns: 1fr;
    }
}

.ita-settings-section {
    margin-bottom: 1.5rem;
}

.ita-settings-section:last-child {
    margin-bottom: 0;
}

.ita-section-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px dashed var(--border-color);
}

.ita-section-title svg,
.ita-section-title i {
    color: var(--primary);
    width: 16px;
    height: 16px;
}

.ita-setting-row {
    margin-bottom: 1rem;
}

.ita-setting-row:last-child {
    margin-bottom: 0;
}

.ita-setting-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.5rem;
}

.ita-setting-label svg,
.ita-setting-label i {
    color: var(--primary);
    width: 16px;
    height: 16px;
}

.ita-hint-icon {
    display: inline-flex;
    align-items: center;
    margin-left: 0.25rem;
    color: var(--text-muted);
    cursor: help;
}

.ita-hint-icon:hover {
    color: var(--primary);
}

.ita-setting-hint {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Sliders */
.ita-slider-row {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.ita-slider {
    flex: 1;
    width: 100%;
    height: 6px;
    border-radius: var(--radius-full);
    background: var(--primary-light);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}

.ita-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: white;
    border: 3px solid var(--primary);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
}

.ita-slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

.ita-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: white;
    border: 3px solid var(--primary);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.ita-slider-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.ita-value-display {
    min-width: 50px;
    padding: 0.35rem 0.6rem;
    background: var(--primary);
    color: white;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.82rem;
    text-align: center;
}

/* Dropdown */
.ita-dropdown {
    width: 100%;
    padding: 0.65rem 2rem 0.65rem 0.9rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: var(--bg-elevated);
    color: var(--text);
    font-size: 0.9rem;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%233399cc' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 15px;
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.ita-dropdown:hover,
.ita-dropdown:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(51, 153, 204, 0.15);
}

/* Text input */
.ita-text-input {
    width: 100%;
    padding: 0.65rem 0.9rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: var(--bg-elevated);
    color: var(--text);
    font-size: 0.9rem;
    font-family: 'Courier New', monospace;
    transition: border-color 0.2s ease;
}

.ita-text-input:hover,
.ita-text-input:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(51, 153, 204, 0.15);
}

/* Custom checkbox (scoped to avoid custom_styles.css override) */
.ita-checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 0.9rem;
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid var(--border-color);
}

.ita-checkbox-wrapper:hover {
    background: var(--primary-light);
    border-color: var(--primary);
}

/* Scoped checkbox override - prevents custom_styles.css from blowing it out */
.ita-checkbox-wrapper input[type="checkbox"] {
    width: 16px !important;
    height: 16px !important;
    border: 1px solid var(--border-color) !important;
    background: var(--bg-elevated) !important;
    margin-right: 0 !important;
    accent-color: var(--primary);
    cursor: pointer;
    flex-shrink: 0;
}

.ita-checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text);
    cursor: pointer;
}

.ita-checkbox-label svg,
.ita-checkbox-label i {
    color: var(--primary);
    width: 16px;
    height: 16px;
}

/* Background toggle */
.ita-bg-toggle {
    display: flex;
    gap: 0.5rem;
}

.ita-bg-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.55rem 0.9rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-elevated);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.ita-bg-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.ita-bg-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.ita-bg-preview {
    width: 14px;
    height: 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

.ita-bg-preview.dark  { background: #1a1a2e; }
.ita-bg-preview.light { background: #f8fafc; }

/* ============================================
   ACTION BAR
   ============================================ */
.ita-action-bar {
    display: flex;
    gap: 0.75rem;
    padding: 1.25rem 2rem;
    justify-content: center;
    flex-wrap: wrap;
    background: var(--primary-light);
    border-top: 1px solid var(--border-color);
}

[data-theme="dark"] .ita-action-bar {
    background: var(--card-bg);
}

/* Scoped buttons - avoid custom_styles.css conflicts */
.ita-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.7rem 1.35rem;
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 2px solid transparent;
    text-decoration: none;
    white-space: nowrap;
}

.ita-btn svg,
.ita-btn i { flex-shrink: 0; }

/* Primary - solid, no gradient */
.ita-btn-primary {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.ita-btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(51, 153, 204, 0.35);
}

.ita-btn-primary:disabled {
    background: var(--border-color);
    border-color: var(--border-color);
    color: var(--text-muted);
    cursor: not-allowed;
}

/* Secondary */
.ita-btn-secondary {
    background: var(--bg-elevated);
    color: var(--text);
    border-color: var(--border-color);
}

.ita-btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

/* Copy success feedback */
.ita-btn.ita-copy-success {
    background: #339966 !important;
    border-color: #339966 !important;
    color: white !important;
}

/* ============================================
   ERROR & NOTICES
   ============================================ */
.ita-error-message {
    margin: 1rem 2rem;
    padding: 1rem 1.25rem;
    background: #fff0f0;
    border: 1px solid #fecaca;
    border-radius: var(--radius-md);
    color: var(--danger);
    font-size: 0.9rem;
    line-height: 1.5;
}

.ita-error-message a {
    color: var(--danger);
    font-weight: 600;
}

[data-theme="dark"] .ita-error-message {
    background: rgba(230, 78, 78, 0.1);
    border-color: rgba(230, 78, 78, 0.3);
}

.ita-privacy-notice {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin: 1.25rem 0;
    padding: 0.9rem 1.5rem;
    background: var(--primary-light);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    color: var(--primary-dark);
}

[data-theme="dark"] .ita-privacy-notice {
    color: var(--primary);
}

.ita-privacy-notice svg,
.ita-privacy-notice i {
    flex-shrink: 0;
    color: var(--primary);
    width: 18px;
    height: 18px;
}

/* ============================================
   RELATED TOOLS
   ============================================ */
.ita-related-tools {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.5rem 0;
    padding: 1.1rem 1.5rem;
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    flex-wrap: wrap;
    border: 1px solid var(--border-color);
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.ita-related-label {
    font-weight: 600;
    color: var(--text);
    font-size: 0.875rem;
    white-space: nowrap;
}

.ita-related-links {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.ita-related-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.4rem 0.85rem;
    background: var(--card-secondary);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-full);
    font-size: 0.82rem;
    font-weight: 500;
    transition: all 0.2s ease;
    border: 1px solid var(--border-color);
}

.ita-related-link:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: translateY(-1px);
}

.ita-related-link svg,
.ita-related-link i {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

/* ============================================
   INFO CARDS (override shared .info-card)
   ============================================ */

/* Ensure info cards have proper background */
.ita-wrap .info-sections {
    display: grid;
    gap: 1.5rem;
    margin-top: 2rem;
}

.ita-wrap .info-card {
    background: var(--bg-elevated) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: var(--radius-xl) !important;
    padding: 1.75rem !important;
    box-shadow: var(--shadow-sm) !important;
}

.ita-wrap .info-card h2 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.2rem;
    color: var(--text) !important;
    margin: 0 0 1.25rem !important;
}

.ita-wrap .info-card h2 svg,
.ita-wrap .info-card h2 i {
    color: var(--primary) !important;
}

/* Steps list - solid numbered circles */
.ita-steps-list {
    list-style: none;
    padding: 0;
    margin: 0;
    counter-reset: ita-step;
}

.ita-steps-list li {
    position: relative;
    padding-left: 3.25rem;
    padding-bottom: 1.25rem;
    counter-increment: ita-step;
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
}

.ita-steps-list li:not(:last-child)::after {
    content: '';
    position: absolute;
    left: calc(1rem - 1px);
    top: 2rem;
    bottom: 0;
    width: 2px;
    background: var(--primary-light);
}

/* Solid circle - no gradient */
.ita-steps-list li::before {
    content: counter(ita-step);
    position: absolute;
    left: 0;
    top: 0;
    width: 2rem;
    height: 2rem;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.82rem;
    z-index: 1;
}

/* Mode explanations */
.ita-mode-explanations {
    display: grid;
    gap: 0.85rem;
}

.ita-mode-explain {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.ita-mode-tag {
    flex-shrink: 0;
    padding: 0.3rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    font-weight: 600;
    color: white;
    white-space: nowrap;
}

/* Solid colors - no gradients */
.ita-mode-tag.standard { background: #3399cc; }
.ita-mode-tag.detailed { background: #8B5CF6; }
.ita-mode-tag.blocks   { background: #F59E0B; }
.ita-mode-tag.simple   { background: #339966; }
.ita-mode-tag.dots     { background: #e64e4e; }
.ita-mode-tag.binary   { background: #555; }

.ita-mode-explain p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Tips grid */
.ita-tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.25rem;
}

.ita-tip-item {
    display: flex;
    gap: 1rem;
    padding: 1.1rem;
    background: var(--card-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
    min-width: 0;
}

.ita-tip-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.ita-tip-icon {
    width: 44px;
    height: 44px;
    background: var(--primary-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--primary);
}

.ita-tip-icon svg,
.ita-tip-icon i {
    width: 22px;
    height: 22px;
}

.ita-tip-content h4 {
    margin: 0 0 0.35rem;
    font-size: 0.95rem;
    color: var(--text);
}

.ita-tip-content p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ============================================
   FAQ - uses global .faq-item.open pattern
   ============================================ */
.ita-wrap .faq-list {
    display: grid;
    gap: 0.6rem;
}

.ita-wrap .faq-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color 0.2s ease;
}

.ita-wrap .faq-item:hover {
    border-color: var(--primary);
}

.ita-wrap .faq-question {
    width: 100%;
    padding: 0.9rem 1.1rem;
    background: var(--card-secondary);
    border: none;
    text-align: left;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.2s ease;
    gap: 0.75rem;
}

.ita-wrap .faq-question:hover {
    background: var(--primary-light);
}

.ita-wrap .faq-question svg,
.ita-wrap .faq-question i {
    color: var(--primary);
    transition: transform 0.3s ease;
    flex-shrink: 0;
    width: 18px;
    height: 18px;
}

.ita-wrap .faq-item.open .faq-question svg,
.ita-wrap .faq-item.open .faq-question i {
    transform: rotate(180deg);
}

.ita-wrap .faq-answer {
    display: none;
    padding: 0 1.1rem 1rem;
    background: var(--bg-elevated);
}

.ita-wrap .faq-item.open .faq-answer {
    display: block;
}

.ita-wrap .faq-answer p {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.9rem;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
    .ita-preview-panels {
        grid-template-columns: 1fr;
    }

    .ita-original-panel {
        max-height: 240px;
    }

    #originalImage {
        max-height: 200px;
    }

    .ita-ascii-content {
        min-height: 260px;
    }
}

@media (max-width: 768px) {
    .ita-upload-section {
        padding: 2rem 1.25rem;
    }

    .ita-upload-area {
        padding: 2.5rem 1.25rem;
    }

    .ita-preview-area {
        padding: 1rem;
    }

    .ita-settings-panel {
        padding: 1.25rem;
    }

    .ita-action-bar {
        flex-direction: column;
        padding: 1.25rem;
    }

    .ita-btn {
        width: 100%;
    }

    .ita-related-tools {
        flex-direction: column;
        gap: 0.75rem;
    }

    .ita-mode-explain {
        flex-direction: column;
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .ita-preview-panel .ita-panel-header {
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-start;
    }

    .ita-ascii-actions {
        width: 100%;
        justify-content: flex-end;
    }

    .ita-bg-toggle {
        flex-direction: column;
    }

    .ita-tips-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}