:root {
    --primary-color: #00ff9d;
    --background-color: #1a1a1a;
    --text-color: #ffffff;
    --control-bg: #2d2d2d;
    --border-color: #444;
}

[data-theme="light"] {
    --background-color: #f5f5f5;
    --text-color: #1a1a1a;
    --control-bg: #ffffff;
    --border-color: #ddd;
    --primary-color: #007bff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: 0.3s all;
}

body {
    background: var(--background-color);
    color: var(--text-color);
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
}

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

h1 {
    text-align: center;
    margin: 2rem 0;
    color: var(--primary-color);
    font-size: 2.5rem;
}

.upload-section {
    display: flex;
    gap: 1rem;
    margin: 2rem 0;
    justify-content: center;
    flex-wrap: wrap;
}

button {
    padding: 1rem 2rem;
    background: var(--primary-color);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    color: var(--background-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.comparison-container {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 2rem auto;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 0 30px rgba(0, 255, 157, 0.2);
}

.image-container {
    position: relative;
    width: 100%;
    height: 60vh;
    min-height: 400px;
}

#originalImage,
#enhancedImage {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.slider {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 100%;
    background: var(--primary-color);
    cursor: col-resize;
    z-index: 10;
}

.controls {
    background: var(--control-bg);
    padding: 2rem;
    border-radius: 15px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.seo-content {
    background: var(--control-bg);
    padding: 2rem;
    border-radius: 15px;
    margin: 3rem 0;
}

.seo-content h2 {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 1rem;
    margin-bottom: 2rem;
}

.ad-container {
    background: var(--control-bg);
    padding: 1.5rem;
    border-radius: 10px;
    margin: 2rem 0;
    text-align: center;
    border: 1px solid var(--border-color);
}

.sticky-ad {
    position: sticky;
    bottom: 20px;
    background: var(--primary-color);
    color: var(--background-color);
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .image-container {
        height: 50vh;
    }
}