/* Background Remover - Desktop Styles */

.bgremover-container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.bgremover-wrapper {
    max-width: 1000px;
    margin: 0 auto;
}

.bgremover-title {
    font-size: 3rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 0.5rem;
    color: var(--text);
    font-family: 'Poppins', sans-serif;
}

.bgremover-icon {
    font-size: 2.8rem;
    animation: pulse 2s infinite;
}

.bgremover-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
}

.bgremover-card {
    background: var(--surface);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 2rem;
    box-shadow: var(--shadow);
}

/* Upload Area */
.upload-area {
    border: 3px dashed var(--border);
    border-radius: 16px;
    padding: 4rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
}

.upload-area:hover {
    border-color: var(--primary);
    background: rgba(var(--primary-rgb), 0.05);
}

.upload-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.upload-btn {
    margin-top: 1.5rem;
    padding: 0.9rem 2rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.upload-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

/* Preview */
.preview-area {
    margin-top: 2rem;
}

.preview-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.preview-box {
    background: var(--bg);
    border-radius: 16px;
    padding: 1.5rem;
    border: 1px solid var(--border);
    text-align: center;
    position: relative;
}

.preview-box h4 {
    margin-bottom: 1rem;
    color: var(--text-light);
}

.preview-img, #resultCanvas {
    max-width: 100%;
    max-height: 400px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    object-fit: contain;
}

.result-canvas-container {
    position: relative;
    display: inline-block;
    width: 100%;
}

/* Loading */
.loading-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.6);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    border-radius: 12px;
    z-index: 10;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid #fff;
    border-top: 5px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

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

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* Actions */
.bgremover-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
    margin: 2rem 0;
}

.bgremover-btn {
    padding: 0.9rem 1.8rem;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text);
    font-size: 0.95rem;
}

.bgremover-btn.primary {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.bgremover-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99,102,241,0.2);
}

.bgremover-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.download-btn {
    background: linear-gradient(135deg, #10b981, #059669) !important;
    color: white !important;
    border: none !important;
}

/* Presets */
.bgremover-presets {
    margin: 3rem 0;
    text-align: center;
}

.bgremover-presets h3 {
    margin-bottom: 1rem;
    color: var(--text);
}

.preset-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

.preset-btn {
    padding: 0.7rem 1.4rem;
    border: 1px solid var(--border);
    border-radius: 50px;
    background: transparent;
    cursor: pointer;
    transition: all 0.3s;
    color: var(--text);
    font-size: 0.9rem;
}

.preset-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: translateY(-2px);
}

/* Reference Table */
.bgremover-reference {
    margin: 3rem 0;
    overflow-x: auto;
}

.bgremover-reference h3 {
    margin-bottom: 1rem;
    color: var(--text);
}

.bgremover-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface);
    border-radius: 12px;
    overflow: hidden;
}

.bgremover-table th,
.bgremover-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.bgremover-table th {
    background: var(--primary);
    color: white;
    font-weight: 600;
}

.bgremover-table tr:last-child td {
    border-bottom: none;
}

/* SEO Section */
.bgremover-seo {
    margin: 3rem 0;
    padding: 2rem;
    background: var(--surface);
    border-radius: 16px;
    border: 1px solid var(--border);
}

.bgremover-seo h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--text);
}

.bgremover-seo h3 {
    font-size: 1.3rem;
    margin: 1.5rem 0 1rem;
    color: var(--text);
}

.bgremover-seo p {
    line-height: 1.6;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.bgremover-howto-list,
.bgremover-features-list {
    padding-left: 1.5rem;
    margin: 1rem 0;
}

.bgremover-howto-list li,
.bgremover-features-list li {
    margin: 0.5rem 0;
    line-height: 1.5;
    color: var(--text-light);
}

/* ====================== RESPONSIVE STYLES ====================== */

/* Tablet Styles (768px to 1024px) */
@media screen and (max-width: 1024px) {
    .bgremover-container {
        padding: 0 1.5rem;
        margin: 1.5rem auto;
    }
    
    .bgremover-title {
        font-size: 2.5rem;
    }
    
    .bgremover-icon {
        font-size: 2.3rem;
    }
    
    .bgremover-card {
        padding: 1.5rem;
    }
    
    .preview-container {
        gap: 1.5rem;
    }
    
    .preview-img, #resultCanvas {
        max-height: 350px;
    }
}

/* Mobile Landscape & Tablet Portrait (481px to 768px) */
@media screen and (max-width: 768px) {
    .bgremover-container {
        padding: 0 1rem;
        margin: 1rem auto;
    }
    
    .bgremover-title {
        font-size: 2rem;
    }
    
    .bgremover-icon {
        font-size: 1.8rem;
    }
    
    .bgremover-subtitle {
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .bgremover-card {
        padding: 1rem;
    }
    
    .upload-area {
        padding: 2rem 1rem;
    }
    
    .upload-icon {
        font-size: 3rem;
    }
    
    .upload-content h3 {
        font-size: 1.1rem;
    }
    
    .upload-content p {
        font-size: 0.85rem;
    }
    
    .upload-btn {
        padding: 0.7rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .preview-container {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .preview-box {
        padding: 1rem;
    }
    
    .preview-img, #resultCanvas {
        max-height: 300px;
    }
    
    .bgremover-actions {
        gap: 0.8rem;
    }
    
    .bgremover-btn {
        padding: 0.7rem 1.2rem;
        font-size: 0.85rem;
    }
    
    .preset-buttons {
        gap: 0.8rem;
    }
    
    .preset-btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.85rem;
    }
    
    .bgremover-table th,
    .bgremover-table td {
        padding: 0.75rem;
        font-size: 0.85rem;
    }
    
    .bgremover-seo {
        padding: 1.5rem;
    }
    
    .bgremover-seo h2 {
        font-size: 1.5rem;
    }
    
    .bgremover-seo h3 {
        font-size: 1.2rem;
    }
    
    .bgremover-seo p,
    .bgremover-howto-list li,
    .bgremover-features-list li {
        font-size: 0.9rem;
    }
}

/* Mobile Portrait (up to 480px) */
@media screen and (max-width: 480px) {
    .bgremover-container {
        padding: 0 0.75rem;
        margin: 0.75rem auto;
    }
    
    .bgremover-title {
        font-size: 1.5rem;
    }
    
    .bgremover-icon {
        font-size: 1.3rem;
    }
    
    .bgremover-subtitle {
        font-size: 0.9rem;
        margin-bottom: 1rem;
    }
    
    .bgremover-card {
        padding: 0.75rem;
    }
    
    .upload-area {
        padding: 1.5rem 0.75rem;
    }
    
    .upload-icon {
        font-size: 2.5rem;
    }
    
    .upload-content h3 {
        font-size: 1rem;
    }
    
    .upload-content p {
        font-size: 0.75rem;
    }
    
    .upload-btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.85rem;
    }
    
    .preview-box {
        padding: 0.75rem;
    }
    
    .preview-box h4 {
        font-size: 0.9rem;
        margin-bottom: 0.75rem;
    }
    
    .preview-img, #resultCanvas {
        max-height: 250px;
    }
    
    /* Make buttons stack in 2 columns on very small screens */
    .bgremover-actions {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 0.6rem;
    }
    
    .bgremover-btn {
        padding: 0.6rem 1rem;
        font-size: 0.8rem;
        width: 100%;
    }
    
    .preset-buttons {
        gap: 0.6rem;
    }
    
    .preset-btn {
        padding: 0.5rem 1rem;
        font-size: 0.75rem;
    }
    
    .bgremover-reference {
        margin: 2rem 0;
    }
    
    .bgremover-table th,
    .bgremover-table td {
        padding: 0.6rem;
        font-size: 0.75rem;
    }
    
    .bgremover-seo {
        padding: 1rem;
        margin: 2rem 0;
    }
    
    .bgremover-seo h2 {
        font-size: 1.2rem;
    }
    
    .bgremover-seo h3 {
        font-size: 1rem;
        margin: 1rem 0 0.75rem;
    }
    
    .bgremover-seo p,
    .bgremover-howto-list li,
    .bgremover-features-list li {
        font-size: 0.85rem;
    }
    
    .bgremover-howto-list,
    .bgremover-features-list {
        padding-left: 1rem;
    }
}

/* Extra Small Devices (up to 360px) */
@media screen and (max-width: 360px) {
    .bgremover-title {
        font-size: 1.3rem;
    }
    
    .bgremover-icon {
        font-size: 1.1rem;
    }
    
    .bgremover-btn {
        padding: 0.5rem 0.8rem;
        font-size: 0.75rem;
    }
    
    .preview-img, #resultCanvas {
        max-height: 200px;
    }
    
    .preset-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.7rem;
    }
    
    .bgremover-table th,
    .bgremover-table td {
        padding: 0.5rem;
        font-size: 0.7rem;
    }
    
    .bgremover-seo h2 {
        font-size: 1rem;
    }
    
    .bgremover-seo h3 {
        font-size: 0.9rem;
    }
}

/* Touch-friendly improvements for mobile devices */
@media (hover: none) and (pointer: coarse) {
    .upload-area,
    .bgremover-btn,
    .preset-btn {
        cursor: pointer;
        -webkit-tap-highlight-color: transparent;
    }
    
    .bgremover-btn:active,
    .preset-btn:active {
        transform: scale(0.98);
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --primary-rgb: 99, 102, 241;
    }
}

/* Smooth transitions for all interactive elements */
* {
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease, transform 0.2s ease;
}

/* Ensure canvas maintains proper display */
#resultCanvas {
    width: auto;
    height: auto;
    display: block;
    margin: 0 auto;
}

/* Improve table readability on mobile */
@media screen and (max-width: 768px) {
    .bgremover-table {
        font-size: 0.85rem;
    }
}

/* Loading overlay text adjustment for mobile */
@media screen and (max-width: 480px) {
    .loading-overlay p {
        font-size: 0.85rem;
        padding: 0 1rem;
        text-align: center;
    }
    
    .spinner {
        width: 40px;
        height: 40px;
        border-width: 4px;
    }
}

/* Preload status indicator */
.preload-status {
    text-align: center;
    padding: 0.75rem;
    margin: 1rem 0;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 8px;
    border-left: 3px solid var(--primary);
    font-size: 0.9rem;
}

.preload-status p {
    margin: 0;
    color: var(--text-light);
}