.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: mdrd-egfr-calculator --- */
.egfr-calculator {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.unit-toggle {
    margin-bottom: 30px;
}

.btn-calculate {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-calculate:hover {
    background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-reset {
    background: #6c757d;
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-reset:hover {
    background: #5a6268;
    color: white;
    transform: translateY(-2px);
}

.egfr-result {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 15px;
    padding: 30px;
    margin-top: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.result-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    height: 100%;
}

.egfr-value, .bsa-value {
    font-size: 2.5rem;
    font-weight: bold;
    color: #667eea;
    margin: 10px 0;
}

.egfr-unit, .bsa-unit {
    color: #6c757d;
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.egfr-category {
    font-weight: 600;
    padding: 5px 15px;
    border-radius: 20px;
    display: inline-block;
    font-size: 0.9rem;
}

.egfr-category.normal { background: #d4edda; color: #155724; }
.egfr-category.mild { background: #fff3cd; color: #856404; }
.egfr-category.moderate { background: #f8d7da; color: #721c24; }
.egfr-category.severe { background: #f5c6cb; color: #721c24; }
.egfr-category.kidney-failure { background: #721c24; color: white; }

.egfr-description {
    background: white;
    padding: 20px;
    border-radius: 10px;
    border-left: 4px solid #667eea;
}

.egfr-chart {
    background: white;
    border-radius: 15px;
    padding: 25px;
    margin-top: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.egfr-range {
    padding: 12px 15px;
    margin: 8px 0;
    border-radius: 8px;
    border-left: 4px solid;
}

.egfr-range.normal { background: #d4edda; border-color: #28a745; }
.egfr-range.mild { background: #fff3cd; border-color: #ffc107; }
.egfr-range.moderate { background: #f8d7da; border-color: #dc3545; }
.egfr-range.severe { background: #f5c6cb; border-color: #dc3545; }
.egfr-range.kidney-failure { background: #721c24; border-color: #721c24; color: white; }

.form-floating {
    margin-bottom: 15px;
}

.form-control:focus, .form-select:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

@media (max-width: 768px) {
    .egfr-value, .bsa-value {
        font-size: 2rem;
    }
    
    .result-card {
        margin-bottom: 20px;
    }
}