.triangle-calc-wrapper {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f4f9;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px 20px;
    border-radius: 12px;
}

.triangle-calc-container {
    background-color: #ffffff;
    padding: 30px 40px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 450px;
}

.triangle-calc-container h2 {
    text-align: center;
    color: #006400; 
    margin-bottom: 25px;
    font-size: 28px;
}

.triangle-calc-container .input-group {
    margin-bottom: 15px;
}

.triangle-calc-container .input-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #555;
}

.triangle-calc-container .input-group input[type="number"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 6px;
    box-sizing: border-box;
    transition: border-color 0.3s;
}

.triangle-calc-container .input-group input[type="number"]:focus {
    border-color: #228B22; 
    outline: none;
}

.triangle-calc-container .button-group {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    margin-top: 25px;
    margin-bottom: 20px;
}

.triangle-calc-container button {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: background-color 0.3s, transform 0.1s;
}

.triangle-calc-container button:first-child {
    background-color: #3CB371;
    color: white;
}

.triangle-calc-container button:first-child:hover {
    background-color: #2E8B57; 
}

.triangle-calc-container button:last-child {
    background-color: #A9A9A9; 
    color: #333;
}

.triangle-calc-container button:last-child:hover {
    background-color: #808080; 
}

.triangle-calc-container button:active {
    transform: scale(0.98);
}

.triangle-calc-container .result-box {
    background-color: #e8f5e9; 
    border: 1px solid #A9A9A9; 
    padding: 15px;
    border-radius: 8px;
    min-height: 50px;
    margin-top: 20px;
    font-size: 1.1em;
    color: #006400;
}

.triangle-calc-container .result-box p {
    margin: 5px 0;
}

.triangle-calc-container .explanation {
    margin-top: 30px;
    padding: 15px;
    border-top: 1px solid #ccc;
}

.triangle-calc-container .explanation h3 {
    color: #555;
    font-size: 1.2em;
    margin-top: 0;
}

.triangle-calc-container .explanation p {
    font-size: 0.9em;
    color: #666;
}