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

body {
    font-family: 'Inter', sans-serif;
    background-color: #E9ECEF;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    background-color: #FFFFFF;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 1000px;
    border: 1px solid #E0E0E0;
}

h1 {
    font-size: 32px;
    text-align: center;
    margin-bottom: 30px;
    color: #007BFF;
}

h2 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #333333;
}

.input-container {
    position: relative;
    margin-bottom: 25px;
}

textarea {
    width: 100%;
    padding: 15px 40px 15px 15px;
    border-radius: 8px;
    border: 1px solid #CCCCCC;
    font-size: 16px;
    resize: none;
    min-height: 200px;
    background-color: #FAFAFA;
    color: #333333;
    transition: all 0.3s ease;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
}

textarea:focus {
    border-color: #007BFF;
    background-color: #FFFFFF;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.16), 0 0 0 2px rgba(0, 123, 255, .25);
}

textarea::placeholder {
    color: #6c757d;
}

.copy-icon {
    position: absolute;
    top: 50%;
    right: 15px;
    transform: translateY(-50%);
    font-size: 20px;
    cursor: pointer;
    color: #707070;
    transition: color 0.3s ease, transform 0.3s ease;
}

.copy-icon:hover {
    color: #007BFF;
    transform: translateY(-50%) scale(1.1);
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 20px;
    }

    h1 {
        font-size: 28px;
        margin-bottom: 20px;
    }

    h2 {
        font-size: 20px;
        margin-bottom: 15px;
    }
}