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

body {
    font-family: 'Arial', sans-serif;
    background: #f0f2f5;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
    width: 90%;
    max-width: 600px;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 2rem;
}

.color-display {
    margin-bottom: 2rem;
}

#colorPreview {
    width: 100%;
    height: 100px;
    border-radius: 8px;
    border: 2px solid #ddd;
}

.input-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.input-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

label {
    min-width: 80px;
    color: #666;
}

input {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    outline: none;
}

input[type="number"] {
    width: 70px;
}

input[type="text"] {
    flex: 1;
}

button {
    padding: 0.5rem 1rem;
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s;
}

button:hover {
    background: #45a049;
}

.result {
    margin-top: 1.5rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 4px;
    text-align: center;
}