/* 썸네일 편집기 전용 범위로 기존 편집 스타일을 한정한다. */

.wt-thumbnail {
    --primary-color: #4A90E2;
    --primary-hover: #357ABD;
    --secondary-color: #6C757D;
    --success-color: #28A745;
    --danger-color: #DC3545;
    --warning-color: #FFC107;
    
    --bg-light: #F8F9FA;
    --bg-white: #FFFFFF;
    --border-color: #DEE2E6;
    --text-dark: #212529;
    --text-muted: #6C757D;
    
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    
    --border-radius: 8px;
    --transition: all 0.3s ease;
}
:where(.wt-thumbnail) * {
    box-sizing: border-box;
}
.wt-thumbnail {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
}
:where(.wt-thumbnail) .thumbnail-maker-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}
:where(.wt-thumbnail) .purpose-section {
    padding: 40px 20px;
    text-align: center;
}
:where(.wt-thumbnail) .purpose-header {
    margin-bottom: 40px;
}
:where(.wt-thumbnail) .purpose-header h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}
:where(.wt-thumbnail) .purpose-header p {
    font-size: 16px;
    color: var(--text-muted);
}
:where(.wt-thumbnail) .purpose-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    max-width: 1000px;
    margin: 0 auto;
}
:where(.wt-thumbnail) .purpose-card {
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 30px 20px;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}
:where(.wt-thumbnail) .purpose-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}
:where(.wt-thumbnail) .purpose-card.purpose-custom {
    border-style: dashed;
}
:where(.wt-thumbnail) .purpose-icon {
    font-size: 48px;
    margin-bottom: 16px;
}
:where(.wt-thumbnail) .purpose-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}
:where(.wt-thumbnail) .purpose-ratio {
    font-size: 14px;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 4px;
}
:where(.wt-thumbnail) .purpose-size {
    font-size: 13px;
    color: var(--text-muted);
}
:where(.wt-thumbnail) .editor-section {
    animation: tmFadeIn 0.3s ease;
}

@keyframes tmFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
:where(.wt-thumbnail) .editor-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
    border-radius: var(--border-radius);
}
:where(.wt-thumbnail) .nav-back-btn {
    background: none;
    border: none;
    font-size: 16px;
    color: var(--text-muted);
    cursor: pointer;
    padding: 8px 12px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}
:where(.wt-thumbnail) .nav-back-btn:hover {
    background: var(--bg-light);
    color: var(--text-dark);
}
:where(.wt-thumbnail) .nav-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
}
:where(.wt-thumbnail) .nav-info {
    font-size: 14px;
    color: var(--text-muted);
    background: var(--bg-light);
    padding: 6px 12px;
    border-radius: 20px;
}
:where(.wt-thumbnail) .nav-reset-btn {
    background: var(--danger-color);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}
:where(.wt-thumbnail) .nav-reset-btn:hover {
    background: #C82333;
}
:where(.wt-thumbnail) .editor-layout {
    display: grid;
    grid-template-columns: 60% 40%;
    gap: 30px;
    align-items: start;
}
:where(.wt-thumbnail) .preview-section {
    position: sticky;
    top: 90px;
    background: var(--bg-white);
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--shadow-md);
}
:where(.wt-thumbnail) .preview-container {
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--bg-light);
    border-radius: var(--border-radius);
    overflow: hidden;
    padding: 20px;
}
:where(.wt-thumbnail) .ad-container {
    margin-top: 20px;
}
:where(.wt-thumbnail) .ad-placeholder {
    min-height: 250px;
    background: #F5F5F5;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #E0E0E0;
}
:where(.wt-thumbnail) .ad-label {
    color: #999;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
:where(.wt-thumbnail) .ad-container.has-ad .ad-label {
    display: none;
}
:where(.wt-thumbnail) .ad-container.has-ad .ad-placeholder {
    min-height: 250px;
    background: #FAFAFA;
    display: block;
}
:where(.wt-thumbnail) .ad-container.has-ad .adsbygoogle {
    display: block;
    min-height: 250px;
}
:where(.wt-thumbnail) #thumbnailCanvas {
    max-width: 100%;
    max-height: 70vh;
    width: auto !important;
    height: auto !important;
    box-shadow: var(--shadow-lg);
    cursor: default;
    border-radius: 4px;
    display: block;
}
:where(.wt-thumbnail) .options-section {
    background: var(--bg-white);
    border-radius: var(--border-radius);
    padding: 0;
    box-shadow: var(--shadow-sm);
}
:where(.wt-thumbnail) .editor-tabs {
    display: flex;
    gap: 8px;
    padding: 20px 20px 0 20px;
    border-bottom: 2px solid var(--border-color);
    overflow-x: auto;
}
:where(.wt-thumbnail) .tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    font-size: 15px;
    font-weight: 500;
    color: var(--text-muted);
    white-space: nowrap;
}
:where(.wt-thumbnail) .tab-btn:hover {
    color: var(--primary-color);
    background: var(--bg-light);
}
:where(.wt-thumbnail) .tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}
:where(.wt-thumbnail) .tab-icon {
    font-size: 20px;
}
:where(.wt-thumbnail) .editor-options {
    padding: 30px;
    max-height: calc(100vh - 200px);
    overflow-y: auto;
}
:where(.wt-thumbnail) .tab-content {
    display: none;
    animation: tmFadeIn 0.3s ease;
}
:where(.wt-thumbnail) .tab-content.active {
    display: block;
}
:where(.wt-thumbnail) .option-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-color);
}
:where(.wt-thumbnail) .option-subtitle {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 16px;
    margin-top: 8px;
}
:where(.wt-thumbnail) .option-group {
    margin-bottom: 20px;
}
:where(.wt-thumbnail) .option-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 8px;
}
:where(.wt-thumbnail) .option-hint {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 6px;
}
:where(.wt-thumbnail) .option-divider {
    height: 1px;
    background: var(--border-color);
    margin: 24px 0;
}
:where(.wt-thumbnail) .input-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}
:where(.wt-thumbnail) .composition-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}
:where(.wt-thumbnail) .composition-radio {
    display: none;
}
:where(.wt-thumbnail) .composition-label {
    flex: 1;
    min-width: 120px;
    padding: 10px 16px;
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-dark);
    text-align: center;
}
:where(.wt-thumbnail) .composition-radio:checked + .composition-label {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}
:where(.wt-thumbnail) .composition-label:hover {
    border-color: var(--primary-color);
}
:where(.wt-thumbnail) .position-control {
    display: grid;
    grid-template-columns: repeat(3, 60px);
    grid-template-rows: repeat(3, 60px);
    gap: 8px;
    justify-content: center;
    margin: 20px 0;
}
:where(.wt-thumbnail) .position-btn {
    width: 60px;
    height: 60px;
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}
:where(.wt-thumbnail) .position-btn:hover {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
}
:where(.wt-thumbnail) .position-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}
:where(.wt-thumbnail) .position-btn:nth-child(2) { grid-column: 2; grid-row: 1; }
:where(.wt-thumbnail) .position-btn:nth-child(1) { grid-column: 1; grid-row: 2; }
:where(.wt-thumbnail) .position-btn:nth-child(3) { grid-column: 2; grid-row: 2; }
:where(.wt-thumbnail) .position-btn:nth-child(4) { grid-column: 3; grid-row: 2; }
:where(.wt-thumbnail) .position-btn:nth-child(5) { grid-column: 2; grid-row: 3; }
:where(.wt-thumbnail) .bg-type-buttons {
    display: flex;
    gap: 12px;
}
:where(.wt-thumbnail) .bg-type-btn {
    flex: 1;
    padding: 12px 16px;
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-dark);
}
:where(.wt-thumbnail) .bg-type-btn:hover {
    border-color: var(--primary-color);
}
:where(.wt-thumbnail) .bg-type-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}
:where(.wt-thumbnail) .bg-options {
    margin-top: 20px;
}
:where(.wt-thumbnail) .color-input-group {
    display: flex;
    gap: 12px;
    align-items: center;
}
:where(.wt-thumbnail) input[type="color"] {
    width: 60px;
    height: 40px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    padding: 4px;
}
:where(.wt-thumbnail) .color-text-input {
    flex: 1;
    padding: 10px 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 14px;
    font-family: 'Courier New', monospace;
    transition: var(--transition);
}
:where(.wt-thumbnail) .color-text-input:focus {
    outline: none;
    border-color: var(--primary-color);
}
:where(.wt-thumbnail) .random-btn,
:where(.wt-thumbnail) .btn-primary,
:where(.wt-thumbnail) .btn-secondary,
:where(.wt-thumbnail) .btn-danger {
    padding: 10px 16px;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}
:where(.wt-thumbnail) .random-btn {
    background: var(--warning-color);
    color: var(--text-dark);
}
:where(.wt-thumbnail) .random-btn:hover {
    background: #E0A800;
}
:where(.wt-thumbnail) .btn-primary {
    background: var(--primary-color);
    color: white;
}
:where(.wt-thumbnail) .btn-primary:hover {
    background: var(--primary-hover);
}
:where(.wt-thumbnail) .btn-secondary {
    background: var(--secondary-color);
    color: white;
}
:where(.wt-thumbnail) .btn-secondary:hover {
    background: #5A6268;
}
:where(.wt-thumbnail) .btn-danger {
    background: var(--danger-color);
    color: white;
}
:where(.wt-thumbnail) .btn-danger:hover {
    background: #C82333;
}
:where(.wt-thumbnail) .full-width {
    width: 100%;
}
:where(.wt-thumbnail) .mt-2 {
    margin-top: 8px;
}
:where(.wt-thumbnail) .text-input,
:where(.wt-thumbnail) .select-input {
    width: 100%;
    padding: 10px 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 14px;
    transition: var(--transition);
}
:where(.wt-thumbnail) .text-input:focus,
:where(.wt-thumbnail) .select-input:focus {
    outline: none;
    border-color: var(--primary-color);
}
:where(.wt-thumbnail) .range-input {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--border-color);
    outline: none;
    -webkit-appearance: none;
}
:where(.wt-thumbnail) .range-input::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
}
:where(.wt-thumbnail) .range-input::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: none;
}
:where(.wt-thumbnail) .checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-dark);
}
:where(.wt-thumbnail) .checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}
:where(.wt-thumbnail) .file-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}
:where(.wt-thumbnail) .file-upload-area:hover {
    border-color: var(--primary-color);
    background: var(--bg-light);
}
:where(.wt-thumbnail) .file-upload-area.dragover {
    border-color: var(--primary-color);
    background: #E3F2FD;
}
:where(.wt-thumbnail) .upload-placeholder {
    pointer-events: none;
}
:where(.wt-thumbnail) .upload-icon {
    font-size: 32px;
    display: block;
    margin-bottom: 8px;
}
:where(.wt-thumbnail) .upload-placeholder p {
    margin: 8px 0;
    color: var(--text-dark);
}
:where(.wt-thumbnail) .upload-hint {
    font-size: 13px;
    color: var(--text-muted);
}
:where(.wt-thumbnail) .url-input-group {
    display: flex;
    gap: 12px;
}
:where(.wt-thumbnail) .url-input-group .text-input {
    flex: 1;
}
:where(.wt-thumbnail) .filter-buttons,
:where(.wt-thumbnail) .format-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 12px;
}
:where(.wt-thumbnail) .filter-btn,
:where(.wt-thumbnail) .format-btn {
    padding: 10px 16px;
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-dark);
}
:where(.wt-thumbnail) .filter-btn:hover,
:where(.wt-thumbnail) .format-btn:hover {
    border-color: var(--primary-color);
}
:where(.wt-thumbnail) .filter-btn.active,
:where(.wt-thumbnail) .format-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}
:where(.wt-thumbnail) .canvas-size-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: var(--bg-light);
    border-radius: var(--border-radius);
}
:where(.wt-thumbnail) .size-label {
    font-size: 14px;
    color: var(--text-muted);
}
:where(.wt-thumbnail) .size-value {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
}
:where(.wt-thumbnail) .modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    justify-content: center;
    align-items: center;
    animation: tmFadeIn 0.3s ease;
}
:where(.wt-thumbnail) .modal.show {
    display: flex;
}
:where(.wt-thumbnail) .modal-content {
    background: var(--bg-white);
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: tmSlideUp 0.3s ease;
}

@keyframes tmSlideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}
:where(.wt-thumbnail) .modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}
:where(.wt-thumbnail) .modal-header h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-dark);
}
:where(.wt-thumbnail) .modal-close {
    background: none;
    border: none;
    font-size: 28px;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}
:where(.wt-thumbnail) .modal-close:hover {
    background: var(--bg-light);
    color: var(--text-dark);
}
:where(.wt-thumbnail) .modal-body {
    padding: 20px;
}
:where(.wt-thumbnail) .modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 20px;
    border-top: 1px solid var(--border-color);
}
:where(.wt-thumbnail) .modal-hint {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 8px;
}
:where(.wt-thumbnail) .modal-hint a {
    color: var(--primary-color);
    text-decoration: none;
}
:where(.wt-thumbnail) .modal-hint a:hover {
    text-decoration: underline;
}
:where(.wt-thumbnail) .custom-ratio-inputs {
    display: flex;
    align-items: flex-end;
    gap: 16px;
}
:where(.wt-thumbnail) .input-group {
    flex: 1;
}
:where(.wt-thumbnail) .input-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 8px;
}
:where(.wt-thumbnail) .input-divider {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-muted);
    padding-bottom: 10px;
}
:where(.wt-thumbnail) .font-code-textarea {
    width: 100%;
    min-height: 200px;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 13px;
    font-family: 'Courier New', monospace;
    resize: vertical;
    transition: var(--transition);
}
:where(.wt-thumbnail) .font-code-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}


@media (max-width: 1200px) {
:where(.wt-thumbnail) .editor-layout {
        grid-template-columns: 1fr;
    }
:where(.wt-thumbnail) .preview-section {
        position: relative;
        top: 0;
    }
}


@media (max-width: 768px) {
:where(.wt-thumbnail) .thumbnail-maker-container {
        padding: 12px;
    }
:where(.wt-thumbnail) .purpose-header h2 {
        font-size: 24px;
    }
:where(.wt-thumbnail) .purpose-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
:where(.wt-thumbnail) .purpose-card {
        padding: 24px 16px;
    }
:where(.wt-thumbnail) .editor-nav {
        flex-wrap: wrap;
        gap: 12px;
    }
:where(.wt-thumbnail) .nav-info {
        width: 100%;
        text-align: center;
    }
:where(.wt-thumbnail) .editor-options {
        padding: 20px;
    }
:where(.wt-thumbnail) .input-row {
        grid-template-columns: 1fr;
    }
:where(.wt-thumbnail) .composition-row {
        flex-direction: column;
    }
:where(.wt-thumbnail) .composition-label {
        min-width: 100%;
    }
:where(.wt-thumbnail) .editor-tabs {
        gap: 6px;
        padding: 16px 16px 0 16px;
    }
:where(.wt-thumbnail) .tab-btn {
        padding: 10px 16px;
        font-size: 14px;
    }
:where(.wt-thumbnail) .tab-text {
        display: none;
    }
:where(.wt-thumbnail) .tab-icon {
        font-size: 24px;
    }
:where(.wt-thumbnail) .option-title {
        font-size: 18px;
    }
:where(.wt-thumbnail) .bg-type-buttons {
        flex-direction: column;
        gap: 8px;
    }
:where(.wt-thumbnail) .color-input-group {
        flex-wrap: wrap;
    }
:where(.wt-thumbnail) input[type="color"] {
        width: 50px;
        height: 36px;
    }
:where(.wt-thumbnail) .custom-ratio-inputs {
        flex-direction: column;
        gap: 12px;
    }
:where(.wt-thumbnail) .input-divider {
        display: none;
    }
:where(.wt-thumbnail) .modal-content {
        width: 95%;
    }
}
:where(.wt-thumbnail) .effects-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}
:where(.wt-thumbnail) .effects-row .checkbox-label {
    flex: none;
    min-width: auto;
    justify-content: center;
}


@media (max-width: 768px) {
:where(.wt-thumbnail) .effects-row {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
}
:where(.wt-thumbnail) .text-list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}
:where(.wt-thumbnail) .btn-add-text {
    padding: 8px 16px;
    background: var(--success-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: var(--transition);
}
:where(.wt-thumbnail) .btn-add-text:hover {
    background: #218838;
}
:where(.wt-thumbnail) .btn-add-text:disabled {
    background: var(--secondary-color);
    cursor: not-allowed;
    opacity: 0.6;
}
:where(.wt-thumbnail) .text-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 300px;
    overflow-y: auto;
    padding: 4px;
}
:where(.wt-thumbnail) .text-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}
:where(.wt-thumbnail) .text-item:hover {
    border-color: var(--primary-color);
    background: #E3F2FD;
}
:where(.wt-thumbnail) .text-item.selected {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}
:where(.wt-thumbnail) .text-item-content {
    flex: 1;
    font-size: 14px;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-right: 12px;
}
:where(.wt-thumbnail) .text-item.selected .text-item-content {
    color: white;
}
:where(.wt-thumbnail) .text-item-badge {
    font-size: 11px;
    padding: 2px 8px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 12px;
    font-weight: 600;
}
:where(.wt-thumbnail) .text-item.selected .text-item-badge {
    background: rgba(255, 255, 255, 0.3);
}
:where(.wt-thumbnail) #thumbnailCanvas {
    max-width: 100%;
    max-height: 70vh;
    width: auto !important;
    height: auto !important;
    box-shadow: var(--shadow-lg);
    cursor: default;
    border-radius: 4px;
    display: block;
}
:where(.wt-thumbnail) #thumbnailCanvas.draggable {
    cursor: move;
}
:where(.wt-thumbnail) #thumbnailCanvas.dragging {
    cursor: grabbing;
}
:where(.wt-thumbnail) .text-selection-indicator {
    position: absolute;
    border: 2px dashed var(--primary-color);
    pointer-events: none;
    z-index: 10;
    animation: tmDashAnimation 1s linear infinite;
}

@keyframes tmDashAnimation {
    to {
        stroke-dashoffset: -20;
    }
}


@media (max-width: 768px) {
:where(.wt-thumbnail) .text-list-header {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }
:where(.wt-thumbnail) .btn-add-text {
        width: 100%;
    }
:where(.wt-thumbnail) .text-list {
        max-height: 200px;
    }
}
:where(.wt-thumbnail) .seo-content-section {
    background: var(--bg-white);
    padding: 60px 20px;
    margin-top: 60px;
}
:where(.wt-thumbnail) .seo-container {
    max-width: 1000px;
    margin: 0 auto;
}
:where(.wt-thumbnail) .content-block {
    margin-bottom: 60px;
}
:where(.wt-thumbnail) .content-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 3px solid var(--primary-color);
}
:where(.wt-thumbnail) .content-text {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 16px;
}
:where(.wt-thumbnail) .content-text strong {
    color: var(--primary-color);
    font-weight: 600;
}
:where(.wt-thumbnail) .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 30px;
}
:where(.wt-thumbnail) .feature-card {
    background: var(--bg-light);
    padding: 30px 24px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    border: 2px solid transparent;
}
:where(.wt-thumbnail) .feature-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
:where(.wt-thumbnail) .feature-icon {
    font-size: 48px;
    margin-bottom: 16px;
}
:where(.wt-thumbnail) .feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
}
:where(.wt-thumbnail) .feature-card p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-muted);
}
:where(.wt-thumbnail) .steps-container {
    margin-top: 30px;
}
:where(.wt-thumbnail) .step-item {
    display: flex;
    gap: 24px;
    align-items: flex-start;
    margin-bottom: 32px;
    padding: 24px;
    background: var(--bg-light);
    border-radius: var(--border-radius);
    transition: var(--transition);
}
:where(.wt-thumbnail) .step-item:hover {
    background: #E3F2FD;
    transform: translateX(8px);
}
:where(.wt-thumbnail) .step-number {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
}
:where(.wt-thumbnail) .step-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}
:where(.wt-thumbnail) .step-content p {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-muted);
}
:where(.wt-thumbnail) .faq-container {
    margin-top: 30px;
}
:where(.wt-thumbnail) .faq-item {
    background: var(--bg-light);
    border-radius: var(--border-radius);
    padding: 24px;
    margin-bottom: 16px;
    transition: var(--transition);
}
:where(.wt-thumbnail) .faq-item:hover {
    background: #E3F2FD;
    box-shadow: var(--shadow-sm);
}
:where(.wt-thumbnail) .faq-question,
:where(.wt-thumbnail) .faq-answer {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}
:where(.wt-thumbnail) .faq-question {
    margin-bottom: 12px;
}
:where(.wt-thumbnail) .faq-icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
}
:where(.wt-thumbnail) .faq-question h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0;
    padding-top: 4px;
}
:where(.wt-thumbnail) .faq-answer p {
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-muted);
    margin: 0;
    padding-top: 4px;
}
:where(.wt-thumbnail) .faq-answer a {
    color: var(--primary-color);
    text-decoration: none;
}
:where(.wt-thumbnail) .faq-answer a:hover {
    text-decoration: underline;
}
:where(.wt-thumbnail) .tips-list {
    list-style: none;
    padding: 0;
    margin-top: 24px;
}
:where(.wt-thumbnail) .tips-list li {
    padding: 16px 20px;
    margin-bottom: 12px;
    background: var(--bg-light);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-dark);
}
:where(.wt-thumbnail) .tips-list li strong {
    color: var(--primary-color);
    font-weight: 600;
}
:where(.wt-thumbnail) .keywords-block {
    background: var(--bg-light);
    padding: 30px;
    border-radius: var(--border-radius);
}
:where(.wt-thumbnail) .keywords-container {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 20px;
}
:where(.wt-thumbnail) .keyword-tag {
    display: inline-block;
    padding: 8px 16px;
    background: var(--bg-white);
    color: var(--text-dark);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}
:where(.wt-thumbnail) .keyword-tag:hover {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
}


@media (max-width: 768px) {
:where(.wt-thumbnail) .seo-content-section {
        padding: 40px 16px;
        margin-top: 40px;
    }
:where(.wt-thumbnail) .content-title {
        font-size: 24px;
    }
:where(.wt-thumbnail) .features-grid {
        grid-template-columns: 1fr;
    }
:where(.wt-thumbnail) .step-item {
        flex-direction: column;
        text-align: center;
    }
:where(.wt-thumbnail) .step-item:hover {
        transform: translateX(0);
    }
:where(.wt-thumbnail) .step-number {
        margin: 0 auto;
    }
}
.wt-thumbnail { --primary-color: var(--accent); --primary-hover: var(--accent-deep); --text-dark: var(--heading); --text-muted: var(--muted); --bg-light: var(--alt); --bg-white: var(--surface); --border-color: var(--border); --border-radius: var(--r-md); font-family: inherit; }
.wt-thumbnail .thumbnail-maker-container { padding: 0; }
.wt-thumbnail .purpose-section { padding: 32px 24px; border: 1px solid var(--border); border-radius: var(--r-lg); background: var(--surface); }
.wt-thumbnail .purpose-header { margin-bottom: 28px; }
.wt-thumbnail .purpose-header :where(h2) { font-size: 24px; }
.wt-thumbnail .purpose-grid { max-width: none; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.wt-thumbnail .purpose-card { padding: 24px 12px; border-width: 1px; }
.wt-thumbnail .purpose-icon { display: grid; place-items: center; width: 72px; height: 56px; margin: 0 auto 20px; border-radius: var(--r-md); background: var(--alt); color: var(--heading); font-size: 19px; font-weight: 700; }
.wt-thumbnail .editor-nav { border: 1px solid var(--border); gap: 12px; flex-wrap: wrap; }
.wt-thumbnail .editor-layout { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 24px; align-items: start; }
.wt-thumbnail .preview-section { min-width: 0; width: auto; position: sticky; top: 90px; }
.wt-thumbnail .preview-container { width: 100%; min-height: 240px; background: var(--alt); border: 1px solid var(--border); border-radius: var(--r-lg); }
.wt-thumbnail .options-section { min-width: 0; width: auto; border: 1px solid var(--border); border-radius: var(--r-lg); box-shadow: none; }
.wt-thumbnail .tab-icon:empty, .wt-thumbnail .feature-icon:empty, .wt-thumbnail .file-upload-icon:empty { display: none; }
.wt-thumbnail .editor-tabs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; padding: 0; }
.wt-thumbnail .tab-btn { min-height: 52px; min-width: 0; padding: 12px 8px; justify-content: center; }
.wt-thumbnail .tab-text { display: inline; font-size: 13px; white-space: nowrap; }
.wt-thumbnail .tab-btn.active { color: var(--accent-ink); border-bottom-color: var(--accent); }
.wt-thumbnail .text-item.selected { border-color: var(--accent); background: var(--accent-soft); }
.wt-thumbnail .nav-reset-btn, .wt-thumbnail .btn-add-text, .wt-thumbnail .random-btn { background: var(--heading); color: #fff; border-color: var(--heading); }
.wt-thumbnail .seo-content-section { margin-top: 24px; padding: 0; background: transparent; }
.wt-thumbnail .seo-container { max-width: none; padding: 0; }
.wt-thumbnail .content-block { background: var(--surface); border: 1px solid var(--border); padding: 28px; border-radius: var(--r-lg); margin-bottom: 24px; }
.wt-thumbnail .content-title { color: var(--heading); font-size: 22px; border: 0; padding-bottom: 0; }
.wt-thumbnail .features-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.wt-thumbnail .feature-card { background: var(--alt); box-shadow: none; }
.wt-thumbnail .modal { z-index: 150; }
.wt-thumbnail .modal-content { max-height: calc(100dvh - 32px); overflow-y: auto; }
.wt-thumbnail :where(button, input, select, textarea):focus-visible { outline: 3px solid var(--heading); outline-offset: 3px; }
.wt-thumbnail :where(input[type="color"]) { min-width: 44px; }
.wt-thumbnail #thumbnailCanvas { touch-action: none; max-width: 100%; }
@media (max-width: 991px) { .wt-thumbnail .editor-layout { grid-template-columns: 1fr; } .wt-thumbnail .preview-section { position: static; } .wt-thumbnail .purpose-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 575px) { .wt-thumbnail .purpose-section, .wt-thumbnail .content-block { padding: 20px; } .wt-thumbnail .purpose-header :where(h2) { font-size: 21px; } .wt-thumbnail .features-grid { grid-template-columns: 1fr; } .wt-thumbnail .purpose-card :where(h3) { font-size: 15px; } .wt-thumbnail .purpose-grid { gap: 10px; } .wt-thumbnail .nav-info { width: 100%; text-align: center; order: 4; } }