body, html {
    margin: 0; padding: 0; height: 100%;
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #ff00cc 0%, #333399 100%);
    background-attachment: fixed;
}

.container { display: flex; flex-direction: column; height: 100vh; padding: 20px; box-sizing: border-box; }
header { color: white; text-align: center; margin-bottom: 10px; }

.toolbar {
    display: flex; gap: 10px; margin-bottom: 10px;
    padding: 10px; border-radius: 10px;
    background: rgba(255, 255, 255, 0.2);
}

.toolbar button {
    padding: 5px 15px; border-radius: 5px; border: none;
    background: rgba(255, 255, 255, 0.3); color: white; cursor: pointer; font-weight: bold;
}

.toolbar button:hover { background: rgba(255, 255, 255, 0.5); }

main { display: flex; flex: 1; gap: 20px; overflow: hidden; }

#editor, #preview {
    flex: 1; height: 100%; padding: 20px; border-radius: 15px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    overflow-y: scroll;
}

#editor { border: none; outline: none; resize: none; font-family: monospace; font-size: 16px; color: white; }
#editor::placeholder { color: rgba(255, 255, 255, 0.6); }
#preview { background: rgba(255, 255, 255, 0.9); color: #333; }