.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: bmi-calculator --- */
.bmi-calculator { background: #f8f9fa; border-radius: 12px; padding: 2rem; box-shadow: 0 4px 6px rgba(0,0,0,0.1); }
.unit-toggle { background: #e9ecef; border-radius: 8px; padding: 0.5rem; margin-bottom: 1.5rem; }
.unit-toggle .btn { border-radius: 6px; font-weight: 500; }
.unit-toggle .btn.active { background: #0d6efd; color: white; box-shadow: 0 2px 4px rgba(13,110,253,0.3); }
.bmi-result { background: linear-gradient(135deg,#667eea 0%,#764ba2 100%); color: white; border-radius: 12px; padding: 2rem; text-align: center; margin-top: 1.5rem; box-shadow: 0 4px 15px rgba(102,126,234,0.3); }
.bmi-value { font-size: 3rem; font-weight: bold; margin: 0.5rem 0; }
.bmi-category { font-size: 1.2rem; font-weight: 500; margin-bottom: 0.5rem; }
.bmi-description { font-size: 0.9rem; opacity: 0.9; }
.bmi-chart { background: white; border-radius: 8px; padding: 1.5rem; margin-top: 1.5rem; box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
.bmi-range { display: flex; align-items: center; padding: 0.5rem; margin: 0.25rem 0; border-radius: 6px; font-weight: 500; }
.bmi-range.underweight { background: #e3f2fd; color: #1976d2; }
.bmi-range.normal { background: #e8f5e8; color: #2e7d32; }
.bmi-range.overweight { background: #fff3e0; color: #f57c00; }
.bmi-range.obese { background: #ffebee; color: #d32f2f; }
.bmi-range.current { border: 2px solid #0d6efd; font-weight: bold; }
.form-floating { margin-bottom: 1rem; }
.form-floating > .form-control { border-radius: 8px; border: 2px solid #e9ecef; transition: border-color 0.15s ease-in-out,box-shadow 0.15s ease-in-out; }
.form-floating > .form-control:focus { border-color: #0d6efd; box-shadow: 0 0 0 0.2rem rgba(13,110,253,0.25); }
.btn-calculate { background: linear-gradient(135deg,#0d6efd 0%,#0b5ed7 100%); border: none; border-radius: 8px; padding: 0.75rem 2rem; font-weight: 600; transition: all 0.3s ease; }
.btn-calculate:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(13,110,253,0.4); }
.btn-reset { background: #6c757d; border: none; border-radius: 8px; padding: 0.75rem 2rem; font-weight: 600; transition: all 0.3s ease; }
.btn-reset:hover { background: #5a6268; transform: translateY(-2px); }
@media (max-width: 768px) { .bmi-calculator { padding: 1rem; } .bmi-value { font-size: 2.5rem; } .unit-toggle { flex-direction: column; gap: 0.5rem; } }