.formula-box {
    background: #f9f9f9;
    border-radius: 12px;
    padding: 25px;
    margin: 20px 0;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}
.formula-box:hover {
    box-shadow: 0 6px 20px rgba(0,0,0,0.12);
}
.formula-box h2 {
    color: #007bff;
    font-size: 1.6em;
    margin-bottom: 20px;
}
.formula-part {
    background: #ffffff;
    border-left: 4px solid #007bff;
    padding: 15px 20px;
    margin-bottom: 15px;
    border-radius: 8px;
    display: flex;
    align-items: flex-start;
    box-shadow: 0 2px 6px rgba(0,0,0,0.03);
}
.formula-part.example {
    background: #e9f5ff;
    border-left-color: #0056b3;
}
.formula-part i {
    font-style: normal;
    font-weight: bold;
    font-size: 1.2em;
    color: #007bff;
    margin-right: 15px;
    min-width: 20px;
}
.formula-part ol {
    padding-left: 25px;
    margin: 0;
}
.formula-part ol li {
    margin-bottom: 8px;
}

/* ===== Converter Form Styling ===== */
.converter-form {
    background: #ffffff;
    border-radius: 12px;
    padding: 25px;
    margin: 30px 0;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}
.converter-form:hover {
    box-shadow: 0 6px 20px rgba(0,0,0,0.12);
}
.converter-form .form-group {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
}
.converter-form label {
    font-weight: 600;
    margin-bottom: 8px;
    color: #333;
    font-size: 1em;
}
.converter-form input[type=\"number\"] {
    padding: 10px 15px;
    font-size: 1em;
    border: 1px solid #ccc;
    border-radius: 8px;
    outline: none;
    transition: all 0.2s ease;
}
.converter-form input[type=\"number\"]:focus {
    border-color: #007bff;
    box-shadow: 0 0 5px rgba(0,123,255,0.3);
}
.converter-form .btn {
    background-color: #007bff;
    color: #fff;
    font-weight: 600;
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}
.converter-form .btn:hover {
    background-color: #0056b3;
}
/* ===== Mobile Responsiveness ===== */
@media (max-width: 768px) {
    .formula-box,
    .converter-form {
        padding: 20px;
        margin: 15px 0;
    }

    .formula-part {
        flex-direction: column;
        padding: 12px 15px;
    }

    .formula-part i {
        margin-bottom: 8px;
        min-width: auto;
    }

    .formula-part ol {
        padding-left: 20px;
    }

    .converter-form .form-group {
        margin-bottom: 15px;
    }

    .converter-form input[type=\"number\"] {
        font-size: 0.95em;
        padding: 8px 12px;
    }

    .converter-form .btn {
        padding: 10px 18px;
        font-size: 0.95em;
    }
}

@media (max-width: 480px) {
    .formula-box,
    .converter-form {
        padding: 15px;
        margin: 10px 0;
    }

    .formula-part {
        padding: 10px 12px;
    }

    .formula-part h2 {
        font-size: 1.4em;
    }

    .converter-form input[type=\"number\"] {
        font-size: 0.9em;
        padding: 7px 10px;
    }

    .converter-form .btn {
        padding: 8px 15px;
        font-size: 0.9em;
    }
}