.tool-fullwidth {
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 0;
}

/* Tool shell */
.calc-tool {
    max-width: 100%;
    margin: 0 auto;
}

.calc-tool.editor-section,
.editor-section.calc-tool {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.calc-tool .card:not(.result-card) {
    border: 1px solid var(--color-border, #e5e7eb);
    box-shadow: var(--shadow-sm, 0 1px 3px rgba(0, 0, 0, 0.06));
    border-radius: var(--radius, 12px);
    background: var(--color-surface, #fff);
}

.calc-tool .card-body {
    padding: 1.25rem 1.35rem;
}

.calc-tool .card-title {
    color: var(--color-text, #1f2937);
    font-weight: 700;
    font-size: 1.05rem;
}

.calc-tool .form-control,
.calc-tool .form-select,
.calc-tool .select-input,
.calc-tool textarea {
    border-radius: 8px;
    border: 1px solid var(--color-border, #e5e7eb);
}

.calc-tool .form-control:focus,
.calc-tool .form-select:focus,
.calc-tool textarea:focus {
    border-color: var(--color-primary, #0d9488);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

.calc-tool .btn-primary {
    background: var(--color-primary, #0d9488);
    border-color: var(--color-primary, #0d9488);
}

.calc-tool .btn-primary:hover {
    background: var(--color-primary-hover, #0f766e);
    border-color: var(--color-primary-hover, #0f766e);
}

.calc-tool .alert {
    border-radius: 10px;
}

[data-theme="dark"] .calc-tool .card:not(.result-card) {
    background: var(--color-surface, #1f2937);
    border-color: var(--color-border, #374151);
}

[data-theme="dark"] .calc-tool .card-title,
[data-theme="dark"] .calc-tool .form-label,
[data-theme="dark"] .calc-tool {
    color: var(--color-text, #f9fafb);
}

[data-theme="dark"] .calc-tool .text-muted,
[data-theme="dark"] .calc-tool .form-text {
    color: var(--color-text-secondary, #9ca3af) !important;
}

[data-theme="dark"] .calc-tool .form-control,
[data-theme="dark"] .calc-tool .form-select,
[data-theme="dark"] .calc-tool textarea {
    background: #111827;
    color: var(--color-text, #f9fafb);
    border-color: var(--color-border, #374151);
}

/* --- tool: bmr-calculator --- */
/* BMR Calculator Styles */
.bmr-calculator {
    max-width: 100%;
    margin: 0 auto;
    padding: 2rem 0;
    background: #f8f9fa;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.bmr-calculator .unit-toggle {
    margin-bottom: 2rem;
    background: #e9ecef;
    border-radius: 8px;
    padding: 0.5rem;
}

.bmr-calculator .unit-toggle .btn {
    border: 2px solid #e9ecef;
    background: #fff;
    color: #6c757d;
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
    border-radius: 6px;
}

.bmr-calculator .unit-toggle .btn:hover {
    border-color: #6c63ff;
    color: #6c63ff;
    background: #fff;
}

.bmr-calculator .unit-toggle .btn.active {
    border-color: #6c63ff;
    background: #6c63ff;
    color: #fff;
    box-shadow: 0 2px 4px rgba(108, 99, 255, 0.3);
}

.bmr-calculator .form-floating {
    margin-bottom: 1rem;
}

.bmr-calculator .form-control,
.bmr-calculator .form-select {
    border: 2px solid #e9ecef;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.bmr-calculator .form-control:focus,
.bmr-calculator .form-select:focus {
    border-color: #6c63ff;
    box-shadow: 0 0 0 0.2rem rgba(108, 99, 255, 0.25);
    outline: none;
}

.bmr-calculator .form-floating label {
    color: #6c757d;
    font-weight: 500;
}

.bmr-calculator .btn-calculate {
    background: linear-gradient(135deg, #6c63ff 0%, #2574e6 100%);
    border: none;
    color: #fff;
    font-weight: 600;
    padding: 0.75rem 2rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(108, 99, 255, 0.3);
}

.bmr-calculator .btn-calculate:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(108, 99, 255, 0.4);
    background: linear-gradient(135deg, #5a52d5 0%, #1e5bb8 100%);
}

.bmr-calculator .btn-reset {
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    color: #6c757d;
    font-weight: 500;
    padding: 0.75rem 2rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.bmr-calculator .btn-reset:hover {
    background: #e9ecef;
    border-color: #dee2e6;
    color: #495057;
    transform: translateY(-2px);
}

/* BMR Results Styles */
.bmr-result {
    background: #fff;
    border-radius: 12px;
    padding: 2rem;
    margin-top: 2rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid #e9ecef;
    animation: fadeInUp 0.6s ease-out;
}

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

.bmr-card {
    background: linear-gradient(135deg, #f8f9ff 0%, #f0f2ff 100%);
    border-radius: 10px;
    padding: 1.5rem;
    text-align: center;
    border: 1px solid #e9ecef;
    transition: transform 0.3s ease;
    height: 100%;
}

.bmr-card:hover {
    transform: translateY(-2px);
}

.bmr-card-title {
    color: #495057;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.bmr-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: #6c63ff;
    margin-bottom: 0.5rem;
    line-height: 1;
}

.bmr-unit {
    font-size: 0.9rem;
    color: #6c757d;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.bmr-description {
    font-size: 0.85rem;
    color: #6c757d;
    line-height: 1.4;
}

/* Recommendations Styles */
.bmr-recommendations {
    margin-top: 2rem;
}

.recommendation-card {
    background: #fff;
    border-radius: 10px;
    padding: 1.5rem;
    text-align: center;
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
    height: 100%;
}

.recommendation-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.recommendation-card h6 {
    font-weight: 600;
    margin-bottom: 1rem;
    color: #495057;
}

.calorie-range {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.weight-loss {
    border-color: #dc3545;
}

.weight-loss h6 {
    color: #dc3545;
}

.weight-loss .calorie-range {
    color: #dc3545;
}

.weight-maintain {
    border-color: #28a745;
}

.weight-maintain h6 {
    color: #28a745;
}

.weight-maintain .calorie-range {
    color: #28a745;
}

.weight-gain {
    border-color: #ffc107;
}

.weight-gain h6 {
    color: #ffc107;
}

.weight-gain .calorie-range {
    color: #ffc107;
}

/* Alert styles */
.alert {
    border-radius: 8px;
    border: none;
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.alert-danger {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
    border-left: 4px solid #dc3545;
}

.alert .btn-close {
    padding: 0.75rem 1rem;
    margin: -0.75rem -1.25rem -0.75rem auto;
}

/* Loading state */
.bmr-calculator.loading {
    pointer-events: none;
    opacity: 0.7;
}

.bmr-calculator.loading .btn-calculate {
    position: relative;
}

.bmr-calculator.loading .btn-calculate::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid transparent;
    border-top: 2px solid #fff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .bmr-calculator {
        padding: 1rem;
    }
    
    .bmr-result {
        padding: 1.5rem;
    }
    
    .bmr-card {
        margin-bottom: 1rem;
    }
    
    .bmr-value {
        font-size: 2rem;
    }
    
    .recommendation-card {
        margin-bottom: 1rem;
    }
}

@media (max-width: 576px) {
    .bmr-calculator .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }
    
    .bmr-calculator .d-flex.gap-3 {
        flex-direction: column;
    }
    
    .bmr-value {
        font-size: 1.75rem;
    }
    
    .calorie-range {
        font-size: 1.1rem;
    }
}

/* Enhanced accessibility */
.bmr-calculator .form-control:focus,
.bmr-calculator .form-select:focus {
    outline: 2px solid #6c63ff;
    outline-offset: 2px;
}

.bmr-calculator .btn:focus {
    outline: 2px solid #6c63ff;
    outline-offset: 2px;
}

/* BMR Info Styles */
.bmr-info {
    background: #fff;
    border-radius: 12px;
    padding: 2rem;
    margin-top: 2rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    border: 1px solid #e9ecef;
}

.bmr-explanation p {
    color: #495057;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.activity-guide {
    margin-top: 1rem;
}

.activity-item {
    padding: 0.75rem 0;
    border-bottom: 1px solid #f1f3f4;
    color: #495057;
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-item .fw-bold {
    color: #6c63ff;
    font-weight: 600;
}

/* Print styles */
@media print {
    .bmr-calculator .unit-toggle,
    .bmr-calculator .btn,
    .bmr-calculator .alert {
        display: none !important;
    }
    
    .bmr-result {
        display: block !important;
        box-shadow: none !important;
        border: 1px solid #000 !important;
    }
}