/* ============================================================================ */
/* Background Remove - AI-Powered Background Removal Tool Styling */
/* ============================================================================ */

/* Tool Page Wrapper */
.tool-page-wrapper {
    background: linear-gradient(180deg, #0f172a 0%, #1e1b4b 100%);
    min-height: 100vh;
    padding-bottom: 4rem;
}

/* Tool Hero */
.tool-hero {
    text-align: center;
    padding: 4rem 2rem 3rem;
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
}

.hero-content-tool {
    max-width: 800px;
    margin: 0 auto;
}

.tool-badge {
    display: inline-block;
    background: rgba(99, 102, 241, 0.2);
    color: #a5b4fc;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.tool-hero h1 {
    font-size: 2.8rem;
    color: white;
    margin-bottom: 1rem;
    font-weight: 800;
}

.tool-hero p {
    font-size: 1.2rem;
    color: #c7d2fe;
    max-width: 600px;
    margin: 0 auto;
}

/* How It Works Section */
.how-it-works {
    text-align: center;
    padding: 4rem 2rem;
    background: rgba(15, 23, 42, 0.5);
}

.how-it-works h2 {
    font-size: 2rem;
    color: white;
    margin-bottom: 3rem;
}

.steps-container {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.step-card {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 12px;
    padding: 2rem;
    width: 200px;
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
}

.step-card:hover {
    transform: translateY(-5px);
    border-color: #818cf8;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.2);
    background: rgba(30, 41, 59, 0.8);
}

.step-icon {
    position: relative;
    height: 60px;
    margin-bottom: 1rem;
}

.step-emoji {
    font-size: 2.5rem;
    animation: bounce 2s ease-in-out infinite;
}

.step-number {
    position: absolute;
    top: -5px;
    right: -5px;
    background: linear-gradient(135deg, #6366f1, #a855f7);
    color: white;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.9rem;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.step-card h3 {
    color: white;
    margin-bottom: 0.5rem;
}

.step-card p {
    color: #c7d2fe;
    font-size: 0.9rem;
}

.step-arrow {
    font-size: 2rem;
    color: #6366f1;
    animation: arrowPulse 1.5s ease-in-out infinite;
}

@keyframes arrowPulse {
    0%, 100% { transform: scaleX(1); opacity: 0.6; }
    50% { transform: scaleX(1.2); opacity: 1; }
}

/* Tool Container */
.tool-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
}

/* Upload Section */
.upload-section {
    margin-bottom: 3rem;
}

.drag-drop-area {
    border: 2px dashed #6366f1;
    border-radius: 16px;
    padding: 3rem 2rem;
    text-align: center;
    background: rgba(30, 41, 59, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 2rem 0;
}

.drag-drop-area:hover {
    border-color: #818cf8;
    background: rgba(30, 41, 59, 0.8);
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.15);
}

.upload-icon-wrapper {
    position: relative;
    display: inline-block;
}

.upload-icon-wrapper i {
    font-size: 4rem;
    color: #6366f1;
}

.upload-pulse {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.2);
    animation: pulse 2s ease-out infinite;
}

@keyframes pulse {
    0% { transform: translate(-50%, -50%) scale(0.8); opacity: 1; }
    100% { transform: translate(-50%, -50%) scale(2); opacity: 0; }
}

.drag-drop-area h3 {
    color: white;
    font-size: 1.5rem;
    margin: 1rem 0 0.5rem;
}

.drag-drop-area p {
    color: #c7d2fe;
    margin: 0.5rem 0;
}

.supported-formats {
    color: #94a3b8;
    font-size: 0.9rem;
    margin-top: 1rem;
}

/* Quick Tips */
.upload-tips {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.tip-item {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition: all 0.3s ease;
}

.tip-item:hover {
    border-color: #818cf8;
    background: rgba(30, 41, 59, 0.8);
    transform: translateY(-3px);
}

.tip-item i {
    color: #6366f1;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.tip-item span {
    color: #c7d2fe;
    line-height: 1.6;
}

/* Comparison Section */
.comparison-section {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 16px;
    padding: 2rem;
    margin: 3rem 0;
}

.comparison-section h2 {
    color: white;
    font-size: 1.8rem;
    margin-bottom: 2rem;
    text-align: center;
}

/* Slider Container */
.slider-container {
    position: relative;
    max-width: 100%;
    height: 400px;
    margin: 2rem 0;
    border-radius: 12px;
    overflow: hidden;
    background: rgba(0, 0, 0, 0.2);
}

.image-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
}

#before-image {
    position: static;
    background-color: #0f172a;
}

#after-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 50%;
    height: 100%;
    overflow: hidden;
}

#after-image {
    position: static;
    width: 200%;
}

#after-image .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
}

.slider {
    position: absolute;
    top: 0;
    left: 50%;
    width: 4px;
    height: 100%;
    background: white;
    cursor: ew-resize;
    transform: translateX(-50%);
}

.slider::before,
.slider::after {
    content: '◄ ►';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-weight: bold;
    font-size: 0.9rem;
    background: rgba(99, 102, 241, 0.9);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    white-space: nowrap;
}

/* Background Options */
.background-options {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 16px;
    padding: 2rem;
    margin: 3rem 0;
}

.background-options h2 {
    color: white;
    font-size: 1.8rem;
    margin-bottom: 2rem;
}

.option-group {
    margin-bottom: 2rem;
}

.option-group h3 {
    color: #a5b4fc;
    margin-bottom: 1rem;
}

/* Color Picker */
.color-picker-wrapper {
    display: flex;
    align-items: center;
    gap: 1rem;
}

#bg-color {
    width: 80px;
    height: 50px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

.color-label {
    color: #c7d2fe;
}

/* Predefined Backgrounds */
.predefined-bgs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.bg-option {
    width: 100%;
    height: 80px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.bg-option:hover {
    transform: scale(1.05);
    border-color: #818cf8;
    box-shadow: 0 5px 15px rgba(99, 102, 241, 0.3);
}

/* File Upload */
.bg-upload-input {
    display: block;
    padding: 0.8rem;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: #c7d2fe;
    border-radius: 8px;
    cursor: pointer;
    margin-bottom: 0.5rem;
}

.bg-upload-label {
    display: block;
    color: #94a3b8;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    padding: 1rem 2rem;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, #6366f1, #a855f7);
    color: white;
    flex: 1;
    min-width: 200px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: rgba(99, 102, 241, 0.2);
    color: #a5b4fc;
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.btn-secondary:hover {
    background: rgba(99, 102, 241, 0.3);
    border-color: #818cf8;
}

/* Loading Overlay */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loader.hidden {
    display: none;
}

.loader::after {
    content: '';
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.hidden {
    display: none !important;
}

/* Features Section */
.tool-features {
    padding: 4rem 2rem;
    text-align: center;
    background: rgba(15, 23, 42, 0.5);
}

.tool-features h2 {
    font-size: 2rem;
    color: white;
    margin-bottom: 3rem;
}

.features-grid-tool {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-item {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.feature-emoji {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 1rem;
}

.feature-item h3 {
    color: white;
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.feature-item p {
    color: #94a3b8;
    font-size: 0.95rem;
}

/* Blog Section */
.tool-blog {
    padding: 4rem 2rem;
    background: #0f172a;
}

.blog-container-tool {
    max-width: 900px;
    margin: 0 auto;
}

.tool-blog h2 {
    font-size: 2rem;
    color: white;
    text-align: center;
    margin-bottom: 3rem;
}

.blog-article {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    padding: 3rem;
}

.blog-article h3 {
    color: #a5b4fc;
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.blog-article h3:first-child {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

.blog-article h4 {
    color: #c7d2fe;
    font-size: 1.2rem;
    margin: 1.5rem 0 0.5rem;
}

.blog-article p {
    color: #cbd5e1;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.blog-article code {
    background: rgba(0, 0, 0, 0.3);
    color: #fbbf24;
    padding: 0.2rem 0.5rem;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
}

.blog-list {
    color: #cbd5e1;
    padding-left: 1.5rem;
    margin: 1rem 0;
}

.blog-list li {
    margin-bottom: 0.8rem;
    line-height: 1.7;
}

.blog-list.numbered {
    list-style-type: decimal;
}

.blog-list a {
    color: #818cf8;
    text-decoration: none;
}

.blog-list a:hover {
    text-decoration: underline;
}

/* Comparison Table */
.comparison-table {
    overflow-x: auto;
    margin: 2rem 0;
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
    background: rgba(15, 23, 42, 0.5);
    border-radius: 8px;
    overflow: hidden;
}

.comparison-table th,
.comparison-table td {
    padding: 1rem;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.comparison-table th {
    background: rgba(99, 102, 241, 0.2);
    color: white;
    font-weight: 600;
}

.comparison-table td {
    color: #c7d2fe;
}

/* FAQ Items */
.faq-item {
    background: rgba(15, 23, 42, 0.5);
    border-radius: 8px;
    padding: 1.5rem;
    margin: 1rem 0;
}

.faq-item h4 {
    color: #818cf8;
    margin-bottom: 0.5rem;
}

.faq-item p {
    margin-bottom: 0;
}

/* Responsive */
@media (max-width: 768px) {
    .tool-hero h1 { 
        font-size: 2rem; 
    }
    
    .steps-container { 
        flex-direction: column;
        align-items: center;
    }
    
    .step-arrow { 
        transform: rotate(90deg); 
        margin: 0.5rem 0;
    }
    
    .step-card { 
        width: 100%; 
        max-width: 280px; 
    }
    
    .blog-article { 
        padding: 1.5rem; 
    }
    
    .features-grid-tool {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
    }
    
    .slider-container {
        height: 300px;
    }
}