:root {
    --primary-color: #3B82F6;
    --secondary-color: #10B981;
    --background-color: #F3F4F6;
    --text-color: #1F2937;
    --card-background: #FFFFFF;
    --shadow-color: rgba(0, 0, 0, 0.1);

    /* Dark Mode Variables */
    --dark-primary-color: #93C5FD;
    --dark-secondary-color: #6EE7B7;
    --dark-background-color: #1F2937;
    --dark-text-color: #F3F4F6;
    --dark-card-background: #374151;
    --dark-shadow-color: rgba(0, 0, 0, 0.4);
}

body.dark-mode {
    --primary-color: var(--dark-primary-color);
    --secondary-color: var(--dark-secondary-color);
    --background-color: var(--dark-background-color);
    --text-color: var(--dark-text-color);
    --card-background: var(--dark-card-background);
    --shadow-color: var(--dark-shadow-color);
    background-image: linear-gradient(rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.8)), url('data:image/svg+xml,%3Csvg width="52" height="26" viewBox="0 0 52 26" xmlns="http://www.w3.org/2000/svg"%3E%3Cg fill="none" fill-rule="evenodd"%3E%3Cg fill="%23d4d4d4" fill-opacity="0.1"%3E%3Cpath d="M10 10c0-2.21-1.79-4-4-4-3.314 0-6-2.686-6-6h2c0 2.21 1.79 4 4 4 3.314 0 6 2.686 6 6zM24 20c0-2.21-1.79-4-4-4-3.314 0-6-2.686-6-6h2c0 2.21 1.79 4 4 4 3.314 0 6 2.686 6 6zM42 20c0-2.21-1.79-4-4-4-3.314 0-6-2.686-6-6h2c0 2.21 1.79 4 4 4 3.314 0 6 2.686 6 6zM52 26c0-2.21-1.79-4-4-4-3.314 0-6-2.686-6-6h2c0 2.21 1.79 4 4 4 3.314 0 6 2.686 6 6zM28 10c0-2.21-1.79-4-4-4-3.314 0-6-2.686-6-6h2c0 2.21 1.79 4 4 4 3.314 0 6 2.686 6 6zM10 26c0-2.21-1.79-4-4-4-3.314 0-6-2.686-6-6h2c0 2.21 1.79 4 4 4 3.314 0 6 2.686 6 6z"/%3E%3C/g%3E%3C/g%3E%3C/svg%3E');
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-image: linear-gradient(rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 0.8)), url('data:image/svg+xml,%3Csvg width="52" height="26" viewBox="0 0 52 26" xmlns="http://www.w3.org/2000/svg"%3E%3Cg fill="none" fill-rule="evenodd"%3E%3Cg fill="%23d4d4d4" fill-opacity="0.4"%3E%3Cpath d="M10 10c0-2.21-1.79-4-4-4-3.314 0-6-2.686-6-6h2c0 2.21 1.79 4 4 4 3.314 0 6 2.686 6 6zM24 20c0-2.21-1.79-4-4-4-3.314 0-6-2.686-6-6h2c0 2.21 1.79 4 4 4 3.314 0 6 2.686 6 6zM42 20c0-2.21-1.79-4-4-4-3.314 0-6-2.686-6-6h2c0 2.21 1.79 4 4 4 3.314 0 6 2.686 6 6zM52 26c0-2.21-1.79-4-4-4-3.314 0-6-2.686-6-6h2c0 2.21 1.79 4 4 4 3.314 0 6 2.686 6 6zM28 10c0-2.21-1.79-4-4-4-3.314 0-6-2.686-6-6h2c0 2.21 1.79 4 4 4 3.314 0 6 2.686 6 6zM10 26c0-2.21-1.79-4-4-4-3.314 0-6-2.686-6-6h2c0 2.21 1.79 4 4 4 3.314 0 6 2.686 6 6z"/%3E%3C/g%3E%3C/g%3E%3C/svg%3E');
}

#corner-text {
    position: fixed;
    top: 1rem;
    right: 1rem;
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary-color);
    z-index: 1000;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    background-color: var(--card-background);
    box-shadow: 0 4px 6px -1px var(--shadow-color);
    transition: color 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease;
}

body.dark-mode #corner-text {
    color: var(--dark-primary-color);
    background-color: var(--dark-card-background);
    box-shadow: 0 4px 6px -1px var(--dark-shadow-color);
}

.container {
    background-color: var(--card-background);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 10px 25px -5px var(--shadow-color), 0 20px 40px -20px var(--shadow-color);
    max-width: 800px;
    width: 100%;
    text-align: center;
}

h1 {
    color: var(--primary-color);
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

p {
    color: var(--text-color);
    margin-bottom: 2rem;
}

.controls {
    margin-bottom: 2rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
}

button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 6px -1px var(--shadow-color);
}

button:hover {
    background-color: #2563EB;
    box-shadow: 0 10px 15px -3px var(--shadow-color), 0 4px 6px -2px var(--shadow-color);
}

#uploadBtn {
    background-color: var(--secondary-color);
}

#uploadBtn:hover {
    background-color: #059669;
}

.media-container {
    position: relative;
    margin-bottom: 2rem;
    background-color: #000;
    border-radius: 0.5rem;
    overflow: hidden;
}

#video, #image, #canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

#image, #canvas {
    display: none;
}

.results-container {
    background-color: var(--background-color);
    padding: 2rem;
    border-radius: 0.5rem;
    text-align: left;
    display: none;
}

.results-container h2 {
    color: var(--primary-color);
    margin-top: 0;
}

.results-container p {
    line-height: 1.6;
}

@media (max-width: 640px) {
    .container {
        padding: 1rem;
    }
    h1 {
        font-size: 2rem;
    }
    .controls {
        flex-direction: column;
    }
}