body {
    background-color: #1a1a2e;
    color: white;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

.comic-container {
    text-align: center;
    background: #16213e;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    max-width: 700px;
    width: 90%;
}

#comic-image {
    width: 100%;
    border-radius: 10px;
    border: 3px solid #e94560;
    margin-bottom: 15px;
}

.controls {
    margin: 20px 0;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
}

button {
    background: #e94560;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    transition: 0.3s;
}

button:hover { background: #ff5e78; }
button:disabled { background: #555; cursor: not-allowed; }

.hidden { display: none; }

.feature-box {
    margin-top: 20px;
    padding: 20px;
    border: 2px dashed #0f3460;
    border-radius: 10px;
    background: #1a1a2e;
}

.special-btn {
    background: #21bf73; /* Warna hijau untuk GeoGebra */
    margin-top: 10px;
}

.special-btn:hover { background: #2bd985; }

input {
    padding: 10px;
    border-radius: 5px;
    border: none;
    margin-right: 5px;
}