/* TDEE Calculator Styles */
.tdee-calculator-wrapper {
    max-width: 900px;
    margin: 50px auto;
    padding: 40px;
    background: linear-gradient(145deg, #ffffff, #f8f9fa);
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    font-family: 'Cairo', Arial, sans-serif;
    text-align: right;
    direction: rtl;
    position: relative;
    overflow: hidden;
}

.tdee-calculator-wrapper h2 {
    font-size: 32px;
    font-weight: 800;
    color: #2c3e50;
    margin-bottom: 20px;
    text-align: center;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.tdee-calculator-wrapper p {
    font-size: 18px;
    color: #6c757d;
    text-align: center;
    margin-bottom: 30px;
    line-height: 1.6;
}

.tdee-calculator-wrapper .nav-tabs {
    justify-content: center;
    margin-bottom: 30px;
    border-bottom: none;
    background: #f1f3f5;
    border-radius: 12px;
    padding: 8px;
}

.tdee-calculator-wrapper .nav-tabs .nav-link {
    font-size: 16px;
    font-weight: 700;
    color: #495057;
    padding: 12px 24px;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.tdee-calculator-wrapper .nav-tabs .nav-link.active {
    background: #017bb9;
    color: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.tdee-calculator-wrapper .nav-tabs .nav-link:hover {
    background: #e9ecef;
    color: #017bb9;
}

.tdee-calculator-wrapper .tab-content {
    padding: 20px;
    background: #fff;
    border-radius: 12px;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

.tdee-calculator-wrapper form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    align-items: start;
}

.tdee-calculator-wrapper .form-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.tdee-calculator-wrapper .form-group label {
    font-size: 16px;
    font-weight: 600;
    color: #2c3e50;
}

.tdee-calculator-wrapper .form-group input,
.tdee-calculator-wrapper .form-group select {
    padding: 10px;
    border: 1px solid #ced4da;
    border-radius: 8px;
    font-size: 16px;
    background: #f8f9fa;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
	padding: 6px 20px;
}

.tdee-calculator-wrapper .form-group input:focus,
.tdee-calculator-wrapper .form-group select:focus {
    border-color: #017bb9;
    box-shadow: 0 0 8px rgba(131, 191, 72, 0.3);
    outline: none;
	padding: 6px 20px;
}

.tdee-calculator-wrapper .form-group input[placeholder] {
    font-size: 14px;
    color: #6c757d;
}

.tdee-calculator-wrapper .form-group input[type="radio"] {
    margin-left: 10px;
    accent-color: #017bb9;
}

.tdee-calculator-wrapper .form-group span {
    font-size: 14px;
    color: #6c757d;
}

.tdee-calculator-wrapper .form-group input.invalid {
    border-color: #dc3545;
    background: #fff5f5;
}

.tdee-calculator-wrapper button[type="submit"] {
    grid-column: span 2;
    padding: 14px 32px;
    background: linear-gradient(90deg, #017bb9, #6fa03c);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s ease, background 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.tdee-calculator-wrapper button[type="submit"]:hover {
    background: linear-gradient(90deg, #5a8b32, #5a8b32);
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.tdee-calculator-wrapper button[type="submit"]:focus {
    box-shadow: 0 0 0 4px rgba(131, 191, 72, 0.3);
    outline: none;
}

.tdee-calculator-wrapper button[type="submit"].loading::after {
    content: "";
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid #fff;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 8px;
    vertical-align: middle;
}

.tdee-calculator-wrapper #tdee-result {
    margin-top: 30px;
    font-size: 18px;
    font-weight: 600;
    color: #2c3e50;
    text-align: center;
    padding: 20px;
    background: #f1f8e9;
    border: 1px solid #017bb9;
    border-radius: 12px;
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}

.tdee-calculator-wrapper hr {
    margin: 40px 0;
    border-color: #dee2e6;
}

.tdee-calculator-wrapper p.text-center {
    font-size: 14px;
    color: #6c757d;
}

.tdee-calculator-wrapper p.text-center a {
    color: #017bb9;
    text-decoration: none;
    font-weight: 600;
}

.tdee-calculator-wrapper p.text-center a:hover {
    text-decoration: underline;
    color: #6fa03c;
}

/* Animation for loading spinner */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Animation for result fade-in */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .tdee-calculator-wrapper {
        padding: 20px;
        margin: 20px;
    }

    .tdee-calculator-wrapper h2 {
        font-size: 26px;
    }

    .tdee-calculator-wrapper p {
        font-size: 16px;
    }

    .tdee-calculator-wrapper form {
        grid-template-columns: 1fr;
    }

    .tdee-calculator-wrapper .form-group input,
    .tdee-calculator-wrapper .form-group select {
        max-width: 100%;
    }

    .tdee-calculator-wrapper .nav-tabs .nav-link {
        padding: 10px 15px;
        font-size: 14px;
    }

    .tdee-calculator-wrapper button[type="submit"] {
        grid-column: span 1;
    }
}

@media (max-width: 576px) {
    .tdee-calculator-wrapper h2 {
        font-size: 22px;
    }

    .tdee-calculator-wrapper #tdee-result {
        font-size: 16px;
    }
}