/* Calculator Specific Styles */

.calculator-container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 2rem;
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 4px 12px var(--box-shadow);
}

.calculator-header {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-color);
}

.calculator-header h1 {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.calculator-header p {
    color: var(--grey);
    font-size: 0.95rem;
}

.subject-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr auto;
    gap: 1rem;
    margin-bottom: 1rem;
    align-items: center;
}

.subject-row input,
.subject-row select {
    padding: 0.75rem;
    border: 2px solid var(--border);
    border-radius: 6px;
    font-size: 0.95rem;
    transition: border-color 0.3s ease;
}

.subject-row input:focus,
.subject-row select:focus {
    outline: none;
    border-color: var(--secondary-color);
}

.btn-remove {
    background-color: #dc3545;
    color: white;
    border: none;
    padding: 0.75rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn-remove:hover {
    background-color: #c82333;
}

.btn-add {
    background-color: var(--secondary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 1rem;
    width: 100%;
}

.btn-add:hover {
    background-color: #065a23;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(4, 57, 21, 0.3);
}

.button-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 2rem;
}

.btn-calculate {
    background-color: #28a745;
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-calculate:hover {
    background-color: #218838;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(40, 167, 69, 0.3);
}

.btn-reset {
    background-color: #6c757d;
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-reset:hover {
    background-color: #5a6268;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(108, 117, 125, 0.3);
}

.result-box {
    background-color: var(--bg);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    margin-top: 2rem;
    display: none;
}

.result-box.show {
    display: block;
    animation: fadeIn 0.5s ease;
}

.result-box h2 {
    color: var(--text-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.gwa-display {
    font-size: 3rem;
    font-weight: bold;
    color: var(--secondary-color);
    margin: 1rem 0;
}

.label-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr auto;
    gap: 1rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .button-group {
        grid-template-columns: 1fr;
    }

    .subject-row {
        grid-template-columns: 1fr;
    }

    .label-row {
        display: none;
    }

    .subject-row input::placeholder {
        font-size: 0.85rem;
    }

    .calculator-container {
        padding: 1rem;
    }

    .gwa-display {
        font-size: 2.5rem;
    }
}