.twin-flame-container {
    background: #ffff;
    border-radius: 15px;
    max-width: 450px;
    padding: 20px;
    margin: 30px auto;
    text-align: center;
    box-shadow: 0 4px 8px rgba(28, 42, 84, 0.4);
    font-family: 'Poppins', sans-serif;
}

.twin-flame-container h2 {
    color: #1C2A54;
    margin-bottom: 10px;
}

.twin-flame-container form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.twin-flame-container input[type="date"],
.twin-flame-container button {
    padding: 10px;
    border-radius: 8px;
    border: 1px solid #ccc;
    font-size: 16px;
}

.twin-flame-container button {
    background: #1C2A54;
    color: white;
    cursor: pointer;
    transition: 0.3s;
}

.twin-flame-container button:hover {
    background: #1C2A54;
}

.result-box {
    background: #fff;
    border-radius: 12px;
    margin-top: 20px;
    padding: 15px;
    box-shadow: 0 4px 8px rgba(28, 42, 84, 0.4);
}

.progress-container {
    background: #1C2A54;
    border-radius: 20px;
    height: 20px;
    width: 100%;
    margin: 10px 0;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: #1C2A54; /* solid dark blue */
    border-radius: 20px;
    width: 0%;
    transition: width 1s ease-in-out;
}

.percentage-text {
    font-weight: bold;
    margin-top: 5px;
    color: #1C2A54;
}