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

body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    padding: 0;
    margin: 0;
}

/* Menu Bar */
.menu-bar {
    position: sticky;
    top: 0;
    width: 100%;
    background: #007bff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.menu-bar-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.app-title {
    color: white;
    margin: 0;
    font-size: 24px;
    font-weight: 600;
}

/* Language Switcher */
.language-switcher {
    position: relative;
}

.burger-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background-color: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    color: #0056b3;
    font-size: 11px;
}

.burger-btn:hover {
    background-color: white;
}

.burger-icon {
    display: flex;
    flex-direction: column;
    gap: 2px;
    width: 14px;
}

.burger-icon span {
    display: block;
    height: 2px;
    width: 100%;
    background-color: #0056b3;
    border-radius: 1px;
}

.current-language {
    font-size: 10px;
}

.language-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 4px;
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    min-width: 100px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
}

.language-menu:not(.hidden) {
    opacity: 1;
    visibility: visible;
}

.language-option {
    padding: 8px 12px;
    cursor: pointer;
    font-size: 13px;
    color: #333;
    border-bottom: 1px solid #f5f5f5;
}

.language-option:hover {
    background-color: #f8f9fa;
}

.language-option.active {
    background-color: #007bff;
    color: white;
}

.hidden {
    display: none;
}

/* Main Layout */
.container {
    max-width: 1400px;
    margin: 10px auto;
    padding: 0;
    background: transparent;
}

.main-content {
    display: flex;
    gap: 15px;
    height: calc(100vh - 80px);
    overflow: hidden;
}

.control-panel {
    flex: 0 0 300px;
    background: white;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    padding: 15px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.content-panel {
    flex: 1;
    background: white;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    padding: 15px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Control Panel Sections */
.upload-section h2,
.watermark-section h2 {
    margin: 0 0 12px 0;
    font-size: 16px;
    color: #333;
    border-bottom: 1px solid #007bff;
    padding-bottom: 6px;
}

.dpi-info {
    font-size: 11px;
    color: #666;
    margin-top: 8px;
}

/* Content Panel */
.images-grid h3,
.results-grid h3 {
    margin: 0 0 12px 0;
    font-size: 16px;
    color: #333;
    border-bottom: 1px solid #28a745;
    padding-bottom: 6px;
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
    min-height: 100px;
}

.image-grid img {
    width: 100%;
    height: 90px;
    object-fit: cover;
    border: 1px solid #ddd;
    border-radius: 4px;
    transition: transform 0.2s;
    cursor: pointer;
}

.image-grid img:hover {
    transform: scale(1.02);
}

/* Watermark Preview */
.watermark-preview {
    min-height: 60px;
    border: 1px dashed #ddd;
    border-radius: 4px;
    margin: 8px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f9f9f9;
    padding: 8px;
}

.watermark-preview img {
    max-width: 100%;
    max-height: 50px;
    border-radius: 3px;
}

/* Mobile Image Preview */
.mobile-image-preview {
    margin: 15px 0;
    padding: 12px;
    background: #553C8B;
    border-radius: 6px;
    border: 1px solid #FF6B35;
    text-align: center;
}

.mobile-image-preview h3 {
    margin: 0 0 10px 0;
    font-size: 14px;
    color: #E8E3F3;
    border-bottom: 1px solid #FF6B35;
    padding-bottom: 4px;
}

.mobile-image-container {
    margin: 10px 0;
    padding: 8px;
    background: #44337A;
    border-radius: 4px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 80px;
}

.mobile-image-container img {
    max-width: 100%;
    max-height: 70px;
    border-radius: 4px;
    border: 1px solid #FF6B35;
}

.mobile-progress-text {
    margin: 8px 0 0 0;
    font-size: 12px;
    color: #B8A9C9;
    font-style: italic;
}

@media (min-width: 769px) {
    .mobile-image-preview {
        display: none !important;
    }
}

/* Settings */
.settings {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.setting-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
}

.setting-row label {
    min-width: 60px;
    font-weight: 500;
    color: #555;
}

.setting-row input[type="range"] {
    flex: 1;
    margin: 0;
}

.setting-row span {
    min-width: 40px;
    font-size: 12px;
    color: #007bff;
    font-weight: 500;
}

.checkbox-row {
    justify-content: flex-start;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 13px;
    margin: 0;
}

.checkbox-label input[type="checkbox"] {
    margin: 0;
    width: 14px;
    height: 14px;
}

/* Position Control */
.position-control {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.position-control label {
    font-size: 13px;
    font-weight: 500;
    color: #555;
}

.position-area {
    position: relative;
    width: 100%;
    height: 80px;
    border: 1px solid #007bff;
    border-radius: 4px;
    background: linear-gradient(45deg, #f8f9fa 25%, transparent 25%), 
                linear-gradient(-45deg, #f8f9fa 25%, transparent 25%), 
                linear-gradient(45deg, transparent 75%, #f8f9fa 75%), 
                linear-gradient(-45deg, transparent 75%, #f8f9fa 75%);
    background-size: 4px 4px;
    background-position: 0 0, 0 2px, 2px -2px, -2px 0px;
    cursor: crosshair;
}

.watermark-dot {
    position: absolute;
    width: 8px;
    height: 8px;
    background: #007bff;
    border: 1px solid white;
    border-radius: 50%;
    cursor: grab;
    transform: translate(-50%, -50%);
    transition: all 0.1s ease;
}

.watermark-dot:hover {
    background: #0056b3;
    transform: translate(-50%, -50%) scale(1.2);
}

.position-instruction {
    font-size: 10px;
    color: #666;
    margin: 0;
    text-align: center;
}

/* Buttons */
#file-input, #watermark-input {
    display: none;
}

.upload-btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.2s;
    margin: 3px;
    border: none;
    font-weight: 500;
}

.upload-btn:hover {
    background-color: #0056b3;
}

.watermark-btn {
    background-color: #28a745;
}

.watermark-btn:hover {
    background-color: #1e7e34;
}

.update-btn {
    width: 100%;
    padding: 10px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
}

.update-btn:hover {
    background-color: #0056b3;
}

/* Mobile/Desktop visibility helpers */
@media (max-width: 768px) {
    .desktop-only {
        display: none !important;
    }
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .menu-bar-content {
        padding: 8px 12px;
    }
    
    .app-title {
        font-size: 18px;
    }
    
    .main-content {
        flex-direction: column;
        height: calc(100vh - 70px);
        gap: 10px;
    }
    
    .control-panel {
        flex: 1;
        width: 100%;
        height: 100%;
        order: 1;
        gap: 15px;
        max-width: none;
        min-height: calc(100vh - 90px);
    }
    
    .content-panel {
        flex: none;
        order: 2;
        gap: 15px;
    }
    
    .container {
        margin: 5px;
    }
    
    .control-panel,
    .content-panel {
        padding: 10px;
    }
    
    .image-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: 8px;
    }
    
    .image-grid img {
        height: 80px;
    }
    
    .settings {
        gap: 10px;
    }
    
    .setting-row {
        font-size: 12px;
        gap: 6px;
    }
    
    .setting-row label {
        min-width: 50px;
    }
    
    .position-area {
        height: 70px;
    }
}

@media (max-width: 480px) {
    .menu-bar-content {
        padding: 6px 10px;
    }
    
    .app-title {
        font-size: 16px;
    }
    
    .control-panel,
    .content-panel {
        padding: 8px;
        gap: 12px;
    }
    
    .image-grid {
        grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
        gap: 6px;
    }
    
    .image-grid img {
        height: 70px;
    }
    
    .upload-btn {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    .position-area {
        height: 60px;
    }
    
    .settings {
        gap: 8px;
    }
    
    .setting-row {
        font-size: 11px;
        gap: 4px;
    }
    
    .setting-row label {
        min-width: 45px;
    }
    
    .setting-row span {
        min-width: 35px;
        font-size: 11px;
    }
}

body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    padding: 0;
    margin: 0;
}

/* Menu Bar */
.menu-bar {
    position: sticky;
    top: 0;
    width: 100%;
    background: #007bff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.menu-bar-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.app-title {
    color: white;
    margin: 0;
    font-size: 24px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

/* Language Switcher - Burger Menu */
.language-switcher {
    position: relative;
}

.burger-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background-color: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    color: #0056b3;
    font-size: 11px;
    transition: all 0.2s ease;
}

.burger-btn:hover {
    background-color: white;
    transform: none;
}

.burger-btn:hover .burger-icon span {
    background-color: #0056b3;
}

.burger-icon {
    display: flex;
    flex-direction: column;
    gap: 2px;
    width: 14px;
}

.burger-icon span {
    display: block;
    height: 2px;
    width: 100%;
    background-color: #0056b3;
    border-radius: 1px;
}

.current-language {
    font-size: 10px;
    letter-spacing: 0.3px;
}

.language-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 4px;
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    min-width: 100px;
    transform: translateY(-5px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
}

.language-menu:not(.hidden) {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.language-option {
    padding: 8px 12px;
    cursor: pointer;
    font-size: 13px;
    color: #333;
    border-bottom: 1px solid #f5f5f5;
}

.language-option:last-child {
    border-bottom: none;
}

.language-option:hover {
    background-color: #f8f9fa;
}

.language-option.active {
    background-color: #007bff;
    color: white;
}

.hidden {
    display: none;
}

/* Mobile Responsive Design */
@media (max-width: 768px) {
    .menu-bar-content {
        padding: 8px 12px;
    }
    
    .app-title {
        font-size: 18px;
        font-weight: 500;
    }
    
    .container {
        margin: 8px;
        padding: 12px;
        border-radius: 4px;
    }
    
    .section {
        margin-bottom: 20px;
        padding: 12px;
        border-radius: 4px;
    }
    
    .section h2 {
        margin-bottom: 12px;
        font-size: 18px;
        padding-bottom: 6px;
    }
    
    .section h3 {
        font-size: 15px;
        margin-bottom: 10px;
    }
    
    .watermark-display-container {
        flex-direction: column;
        gap: 12px;
    }
    
    #watermark-display {
        flex: none;
        min-height: 80px;
        padding: 12px;
        border-width: 1px;
    }
    
    .watermark-display-container .position-control {
        flex: none;
        padding: 10px;
    }
    
    .settings-controls {
        padding: 10px;
        gap: 10px;
    }
    
    .setting-group {
        padding: 10px;
    }
    
    .position-area {
        min-height: 120px;
        padding: 6px;
    }
    
    .upload-area {
        margin-bottom: 15px;
    }
    
    .update-preview-section {
        padding-top: 12px;
        margin-top: 12px;
    }
}

@media (max-width: 480px) {
    .menu-bar-content {
        padding: 6px 10px;
    }
    
    .app-title {
        font-size: 16px;
        font-weight: 500;
    }
    
    .container {
        margin: 4px;
        padding: 8px;
    }
    
    .section {
        margin-bottom: 15px;
        padding: 8px;
    }
    
    .section h2 {
        font-size: 16px;
        margin-bottom: 8px;
        padding-bottom: 4px;
    }
    
    .section h3 {
        font-size: 14px;
        margin-bottom: 8px;
    }
    
    #watermark-display {
        min-height: 60px;
        padding: 8px;
    }
    
    .position-area {
        min-height: 100px;
        padding: 4px;
    }
    
    .burger-btn {
        padding: 4px 8px;
        gap: 4px;
    }
    
    .burger-icon {
        width: 12px;
    }
    
    .current-language {
        font-size: 9px;
    }
    
    #image-container {
        grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
        gap: 6px;
    }
    
    #image-container img {
        height: 70px;
    }
    
    .upload-btn {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    .watermark-display-container .position-control,
    .settings-controls {
        padding: 6px;
    }
    
    .setting-group {
        padding: 6px;
    }
    
    .checkbox-group {
        padding: 6px 8px;
    }
    
    .update-preview-section {
        padding-top: 10px;
        margin-top: 10px;
    }
}

.container {
    max-width: 1400px;
    margin: 10px auto;
    padding: 0;
    background: transparent;
}

.main-content {
    display: flex;
    gap: 15px;
    height: calc(100vh - 80px);
    overflow: hidden;
}

.control-panel {
    flex: 0 0 300px;
    background: white;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    padding: 15px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.content-panel {
    flex: 1;
    background: white;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    padding: 15px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Control Panel Sections */
.upload-section h2,
.watermark-section h2 {
    margin: 0 0 12px 0;
    font-size: 16px;
    color: #333;
    border-bottom: 1px solid #007bff;
    padding-bottom: 6px;
}

.dpi-info {
    font-size: 11px;
    color: #666;
    margin-top: 8px;
}

/* Content Panel */
.images-grid h3,
.results-grid h3 {
    margin: 0 0 12px 0;
    font-size: 16px;
    color: #333;
    border-bottom: 1px solid #28a745;
    padding-bottom: 6px;
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
    min-height: 100px;
}

.image-grid img {
    width: 100%;
    height: 90px;
    object-fit: cover;
    border: 1px solid #ddd;
    border-radius: 4px;
    transition: transform 0.2s;
    cursor: pointer;
}

.image-grid img:hover {
    transform: scale(1.02);
}

/* Images Section */
.images-section {
    background-color: #f8f9fa;
}

.upload-area {
    text-align: center;
    margin-bottom: 25px;
}

.image-preview-grid {
    margin-top: 20px;
}

.image-preview-grid h3 {
    grid-column: 1 / -1;
    margin: 0 0 15px 0;
    width: 100%;
}

#image-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
    margin-top: 5px;
}

#image-container img {
    width: 100%;
    height: 96px;
    object-fit: cover;
    border: 1px solid #ddd;
    border-radius: 4px;
    transition: transform 0.2s;
    margin: 0;
}

#image-container img:hover {
    transform: scale(1.02);
}

/* Watermark Section */
.watermark-section {
    background-color: #fff;
}

.watermark-upload {
    margin-bottom: 25px;
}

.watermark-display-container {
    display: flex;
    gap: 15px;
    align-items: stretch;
    justify-content: flex-start;
    flex-wrap: wrap;
}

#watermark-display {
    flex: 0 0 350px;
    min-height: 100px;
    border: 1px dashed #ddd;
    border-radius: 4px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #f9f9f9;
    padding: 15px;
}

.watermark-display-container .position-control {
    flex: 0 0 375px;
    margin: 0;
    padding: 12px;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    background-color: #f8f9fa;
}

.settings-controls {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 12px;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    background-color: #f8f9fa;
    min-width: 200px;
}

.watermark-placeholder {
    text-align: center;
}

.watermark-placeholder p {
    margin-top: 8px;
    color: #666;
    font-size: 13px;
}

.watermark-loaded {
    text-align: center;
}

.watermark-actions {
    margin-top: 12px;
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
}

#watermark-display img {
    max-width: 200px;
    max-height: 100px;
    border-radius: 3px;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.setting-group {
    text-align: center;
    padding: 12px;
    background-color: #f8f9fa;
    border-radius: 4px;
    border: 1px solid #e0e0e0;
}

.setting-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: #495057;
    font-size: 14px;
}

.setting-group select {
    padding: 6px 10px;
    font-size: 13px;
    border: 1px solid #ddd;
    border-radius: 3px;
    width: 100%;
    background-color: white;
}

.setting-group input[type="range"] {
    width: 100%;
    margin: 6px 0;
}

#size-value, #opacity-value {
    display: block;
    margin-top: 6px;
    font-size: 13px;
    color: #007bff;
    font-weight: 500;
}

/* Position Control */
.position-control {
    flex-direction: column;
    align-items: stretch;
    display: flex;
}

.position-control label {
    text-align: center;
    margin-bottom: 8px;
    font-size: 14px;
}

.watermark-position-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    flex: 1;
    height: 100%;
}

.position-area {
    position: relative;
    flex: 1;
    width: 100% !important;
    min-height: 160px;
    border: 1px solid #007bff;
    border-radius: 4px;
    background: linear-gradient(45deg, #f8f9fa 25%, transparent 25%), 
                linear-gradient(-45deg, #f8f9fa 25%, transparent 25%), 
                linear-gradient(45deg, transparent 75%, #f8f9fa 75%), 
                linear-gradient(-45deg, transparent 75%, #f8f9fa 75%);
    background-size: 6px 6px;
    background-position: 0 0, 0 3px, 3px -3px, -3px 0px;
    cursor: crosshair;
    overflow: hidden;
    padding: 8px;
    box-sizing: border-box;
}

.watermark-dot {
    position: absolute;
    width: 10px;
    height: 10px;
    background: #007bff;
    border: 1px solid white;
    border-radius: 50%;
    cursor: grab;
    transform: translate(-50%, -50%);
    transition: all 0.1s ease;
}

.watermark-dot:hover {
    background: #0056b3;
    transform: translate(-50%, -50%) scale(1.1);
}

.watermark-dot:active {
    cursor: grabbing;
    transform: translate(-50%, -50%) scale(1.15);
}

.position-instruction {
    font-size: 11px;
    color: #666;
    text-align: center;
    margin: 3px 0 0 0;
    font-style: italic;
}

.preview-position-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.preview-position-container .position-area {
    width: 120px;
    height: 80px;
    padding: 8px;
}

/* Checkbox styling */
.checkbox-group {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 12px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 13px;
    margin: 0;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    margin-right: 8px;
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.checkmark {
    margin-left: 4px;
    font-weight: normal;
}

.update-preview-section {
    text-align: center;
    padding-top: 15px;
    margin-top: 15px;
    border-top: 1px solid #e0e0e0;
}

.update-preview-btn {
    background-color: #fd7e14 !important;
    color: white;
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 500;
}

.update-preview-btn:hover {
    background-color: #e8610e !important;
}

/* Results Section */
.results-section {
    background-color: #fff;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.results-header h2 {
    color: #333;
    border-bottom: 2px solid #28a745;
    padding-bottom: 6px;
    margin-bottom: 0;
    font-size: 18px;
}

.download-all-btn {
    background-color: #17a2b8 !important;
    color: white;
    padding: 8px 16px;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: background-color 0.2s;
}

.download-all-btn:hover {
    background-color: #138496 !important;
}

.image-grid {
    text-align: center;
}

.image-grid h2 {
    margin-bottom: 20px;
    color: #333;
    border-bottom: 2px solid #28a745;
    padding-bottom: 10px;
}

/* More specific targeting for original images */
#image-container img {
    margin: 0;
    border: 2px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    object-fit: cover;
    display: block;
}

/* Keep watermarked images larger */
#watermarked-image-container img {
    max-width: calc(100% - 20px) !important;
    max-height: 200px !important;
    margin: 10px;
    cursor: pointer;
    transition: transform 0.2s;
    border: 2px solid #28a745;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

#watermarked-image-container img:hover {
    transform: scale(1.05);
}

/* Buttons */
#file-input, #watermark-input, #watermark-input-change {
    display: none;
}

.upload-btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.2s;
    margin: 3px;
    border: none;
    font-weight: 500;
}

.upload-btn:hover {
    background-color: #0056b3;
}

.watermark-btn {
    background-color: #28a745;
}

.watermark-btn:hover {
    background-color: #1e7e34;
}

.change-btn {
    background-color: #ffc107;
    color: #212529;
    font-size: 13px;
    padding: 6px 14px;
}

.change-btn:hover {
    background-color: #e0a800;
}

.clear-btn {
    background-color: #dc3545;
    color: white;
    font-size: 14px;
    padding: 8px 16px;
}

.clear-btn:hover {
    background-color: #c82333;
}

/* Full Size Preview Overlay */
#fullsize-preview {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
}

.preview-backdrop {
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.preview-container {
    background: white;
    border-radius: 10px;
    width: 95%;
    height: 95%;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid #eee;
    background-color: #f8f9fa;
    border-radius: 10px 10px 0 0;
    flex-shrink: 0;
}

.preview-header h3 {
    margin: 0;
    color: #333;
    font-size: 18px;
}

.preview-actions {
    display: flex;
    gap: 10px;
}

.preview-btn {
    padding: 8px 16px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.3s;
}

.download-btn {
    background-color: #28a745;
    color: white;
}

.download-btn:hover {
    background-color: #1e7e34;
}

.close-btn {
    background-color: #dc3545;
    color: white;
}

.close-btn:hover {
    background-color: #c82333;
}

.preview-content {
    flex: 1;
    display: flex;
    align-items: stretch;
    overflow: hidden;
    gap: 20px;
    padding: 0 20px;
}

.preview-main {
    flex: 1;
    display: flex;
    position: relative;
    min-height: 0;
}

.preview-image-container {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    height: 100%;
    background: rgba(0, 0, 0, 0.02);
    border-radius: 8px;
    margin-right: 20px;
}

.preview-image-container img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 5px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    border: none;
    border-radius: 50%;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s;
    z-index: 10;
}

.prev-btn {
    left: 20px;
}

.next-btn {
    right: 20px;
}

.preview-settings {
    width: 300px;
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    overflow-y: auto;
    border: 1px solid #e0e0e0;
}

.preview-settings h4 {
    margin: 0 0 20px 0;
    color: #333;
    font-size: 18px;
    border-bottom: 2px solid #007bff;
    padding-bottom: 8px;
}

.preview-settings-grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.preview-setting-group {
    text-align: center;
    padding: 12px;
    background-color: #f8f9fa;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

.preview-setting-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #495057;
    font-size: 14px;
}

.preview-setting-group input[type="range"] {
    width: 100%;
    margin: 8px 0;
}

.preview-setting-group select {
    width: 100%;
    padding: 6px 10px;
    font-size: 13px;
    border: 1px solid #ddd;
    border-radius: 4px;
    background-color: white;
}

.preview-setting-group.checkbox-group {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px 12px;
}

#preview-size-value, #preview-opacity-value {
    display: block;
    margin-top: 6px;
    font-size: 13px;
    color: #007bff;
    font-weight: bold;
}

.nav-btn:hover:not(:disabled) {
    background-color: rgba(0, 0, 0, 0.9);
}

.nav-btn:disabled {
    background-color: rgba(0, 0, 0, 0.3);
    cursor: not-allowed;
}

.prev-btn {
    left: 20px;
}

.next-btn {
    right: 20px;
}

.nav-btn span {
    font-weight: bold;
}

/* Responsive Design */
@media (max-width: 768px) {
    .image-preview-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 10px;
    }
    
    .settings-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .section {
        padding: 15px;
        margin-bottom: 20px;
    }
    
    .results-header {
        flex-direction: column;
        gap: 15px;
        align-items: stretch;
    }
    
    .results-header h2 {
        text-align: center;
    }
    
    .download-all-btn {
        align-self: center;
        width: fit-content;
    }
    
    .watermark-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .preview-container {
        width: 98%;
        height: 98%;
    }
    
    .preview-header {
        padding: 10px 15px;
        flex-direction: column;
        gap: 10px;
    }
    
    .preview-actions {
        width: 100%;
        justify-content: center;
    }
    
    .nav-btn {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }
    
    .prev-btn {
        left: 10px;
    }
    
    .next-btn {
        right: 10px;
    }
    
    .preview-image-container {
        padding: 10px;
    }
    
    .watermark-display-container {
        flex-direction: column;
        gap: 20px;
    }
    
    #watermark-display {
        flex: none;
    }
    
    .watermark-display-container .position-control,
    .settings-controls {
        flex: none;
        min-width: auto;
        width: 100%;
    }
    
    /* Full-size preview mobile layout */
    .preview-content {
        flex-direction: column;
        gap: 15px;
        padding: 15px;
    }
    
    .preview-main {
        flex-direction: column;
        order: 2; /* Image container comes second */
    }
    
    .preview-settings {
        width: 100%;
        order: 1; /* Settings come first */
        max-height: 40vh;
        overflow-y: auto;
    }
    
    .preview-image-container {
        margin-right: 0;
        margin-top: 15px;
        flex: 1;
        min-height: 250px;
    }
    
    /* Larger touch targets for mobile */
    .watermark-dot {
        width: 20px !important;
        height: 20px !important;
        border-width: 3px;
        touch-action: none; /* Prevent scrolling while dragging */
    }
    
    .position-area {
        touch-action: none; /* Prevent scrolling while dragging */
    }
}