body {
    background-color: #121212;
    color: #e0e0e0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    justify-content: center;
    padding-top: 50px;
}

.container {
    width: 90%;
    max-width: 600px;
    background: #1e1e1e;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
}

h1 { text-align: center; color: #bb86fc; }

.controls {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
}

textarea {
    width: 100%;
    height: 120px;
    background: #2c2c2c;
    color: #03dac6;
    border: 1px solid #444;
    border-radius: 4px;
    padding: 10px;
    font-family: 'Courier New', Courier, monospace;
    margin-bottom: 10px;
    box-sizing: border-box;
    resize: none;
}

button {
    background: #bb86fc;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    transition: 0.3s;
}

button:hover { background: #9965f4; }

.copy-btn {
    width: 100%;
    background: #03dac6;
    color: #000;
}