/* ==========================================================================
   TBB Lab Calculators — BMI Calculator Stylesheet
   BMI-specific styles only. Common styles in tbb-calculators-common.css
   ========================================================================== */

/* ── BMI-specific colour tokens ─────────────────────────────────────────── */
/*
 * These tokens use BMI-standard category colours (distinct from the plugin's
 * primary blue) so the BMI result card and chart carry their own identity.
 * Override here if the brand palette changes.
 */
.bmi-calculator {
	--bmi-blue:             #0066cc;
	--bmi-blue-dark:        #0052a3;
	--bmi-blue-light:       #f0f8ff;
	--bmi-blue-subtle:      rgba(0, 102, 204, 0.2);
	--bmi-green:            #28a745;
	--bmi-green-dark:       #1e7e34;
	--bmi-green-subtle:     rgba(40, 167, 69, 0.2);
	--bmi-green-border:     #86efac;
	--bmi-green-row-border: #dcfce7;
	--bmi-orange:           #ff9800;
	--bmi-orange-dark:      #e68900;
	--bmi-orange-subtle:    rgba(255, 152, 0, 0.2);
	--bmi-warning-border:   #fcd34d;
	--bmi-red:              #dc3545;
	--bmi-red-dark:         #bd2130;
	--bmi-red-subtle:       rgba(220, 53, 69, 0.2);
}

/* ── Form Elements ──────────────────────────────────────────────────────── */
.bmi-calculator .form-section {
	margin-bottom: 1.5rem;
	width: 100%;
}

.bmi-calculator label {
	display: block;
	font-size: 1.3rem;
	font-weight: 600;
	color: var(--tbb-text);
	margin-bottom: 0.5rem;
	letter-spacing: 0.01em;
}

.bmi-calculator input[type="number"],
.bmi-calculator select {
	display: block;
	width: 100% !important;
	max-width: 100% !important;
	min-width: 0;
	box-sizing: border-box;
	padding: 1rem 1.25rem;
	font-size: 1.4rem;
	line-height: 1.6;
	min-height: 52px;
	color: var(--tbb-text);
	background: var(--tbb-bg);
	border: 1.5px solid var(--tbb-border);
	border-radius: var(--tbb-radius-sm);
	transition: border-color var(--tbb-transition), box-shadow var(--tbb-transition);
	font-family: var(--tbb-font);
	-webkit-appearance: none;
	-moz-appearance: textfield;
}

.bmi-calculator input[type="number"]:focus,
.bmi-calculator select:focus {
	outline: none;
	border-color: var(--tbb-primary);
	box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.bmi-calculator .row {
	display: flex;
	gap: 1rem;
	width: 100%;
}

.bmi-calculator .row input {
	flex: 1;
	min-width: 0;
	width: auto !important;
}

/* ── Main BMI Result Card ───────────────────────────────────────────────── */
.bmi-calculator .bmi-result-card {
	background: linear-gradient(135deg, var(--bmi-blue) 0%, var(--bmi-blue-dark) 100%);
	color: #fff;
	border: none;
	padding: 2.5rem;
	margin-bottom: 1.5rem;
}

.bmi-calculator .result-number {
	display: block;
	font-size: 3rem;
	font-weight: 700;
	margin-bottom: 0.5rem;
}

.bmi-calculator .result-unit {
	display: block;
	font-size: 1.3rem;
	opacity: 0.95;
	margin-bottom: 1rem;
}

.bmi-calculator .result-category {
	font-size: 1.5rem;
	font-weight: 600;
	padding: 0.75rem 1.25rem;
	border-radius: 8px;
	background: rgba(255, 255, 255, 0.2);
	display: inline-block;
}

/* ── Category Colors ────────────────────────────────────────────────────── */
.bmi-calculator .category-underweight {
	background: var(--bmi-blue-subtle);
	color: var(--bmi-blue);
}

.bmi-calculator .category-normal {
	background: var(--bmi-green-subtle);
	color: var(--bmi-green);
}

.bmi-calculator .category-overweight {
	background: var(--bmi-orange-subtle);
	color: var(--bmi-orange);
}

.bmi-calculator .category-obese {
	background: var(--bmi-red-subtle);
	color: var(--bmi-red);
}

/* ── Result Row ─────────────────────────────────────────────────────────── */
.bmi-calculator .result-row {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
	gap: 1.5rem;
	margin-bottom: 2rem;
}

.bmi-calculator .result-label {
	font-size: 1.2rem;
	font-weight: 500;
	color: var(--tbb-text-muted);
	margin-bottom: 0.5rem;
	text-transform: uppercase;
	letter-spacing: 0.5px;
}

.bmi-calculator .result-display {
	font-size: 1.8rem;
	font-weight: 700;
	color: var(--tbb-primary);
}

/* ── Interpretation Section ────────────────────────────────────────────── */
.bmi-calculator .interpretation-section {
	background: var(--bmi-blue-light);
	border-left: 5px solid var(--tbb-primary);
	padding: 1.75rem;
	border-radius: var(--tbb-radius-sm);
	margin-bottom: 2rem;
}

.bmi-calculator .interpretation-section h3 {
	font-size: 1.5rem;
	margin: 0 0 1rem;
	color: var(--tbb-text);
}

.bmi-calculator .interpretation-text {
	font-size: 1.3rem;
	line-height: 1.7;
	color: var(--tbb-text);
}

/* ── Goal Calculator Section ────────────────────────────────────────────── */
.bmi-calculator .goal-calculator-section {
	background: var(--tbb-warning-light);
	border: 1px solid var(--bmi-warning-border);
	border-radius: var(--tbb-radius-sm);
	padding: 1.75rem;
	margin-bottom: 2rem;
}

.bmi-calculator .goal-calculator-section h3 {
	font-size: 1.5rem;
	margin: 0 0 1.5rem;
	color: var(--tbb-text);
}

.bmi-calculator .goal-options {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
	gap: 1rem;
	margin-bottom: 1.5rem;
}

.bmi-calculator .goal-btn {
	padding: 1rem;
	border: 2px solid var(--bmi-warning-border);
	background: var(--tbb-bg);
	color: var(--tbb-text);
	border-radius: var(--tbb-radius-sm);
	font-size: 1.2rem;
	font-weight: 500;
	cursor: pointer;
	transition: all var(--tbb-transition);
}

.bmi-calculator .goal-btn:hover {
	background: var(--bmi-warning-border);
	color: var(--tbb-text);
	transform: translateY(-2px);
	box-shadow: 0 4px 12px rgba(252, 211, 77, 0.3);
}

.bmi-calculator .goal-result {
	background: var(--tbb-bg);
	border-left: 5px solid var(--bmi-orange);
	padding: 1.5rem;
	border-radius: var(--tbb-radius-sm);
	margin-top: 1.5rem;
	animation: slideDown 160ms ease-out;
}

.bmi-calculator .goal-result p {
	margin: 0.75rem 0;
	font-size: 1.3rem;
	line-height: 1.6;
}

.bmi-calculator .goal-result em {
	color: var(--tbb-text-muted);
	font-size: 1.1rem;
}

/* ── BMI Chart ───────────────────────────────────────────────────────── */
.bmi-calculator .bmi-chart-container {
	background: var(--tbb-bg-subtle);
	border-radius: var(--tbb-radius-sm);
	padding: 1.75rem;
	margin-bottom: 2rem;
}

.bmi-calculator .bmi-chart-container h3 {
	font-size: 1.5rem;
	margin: 0 0 1.5rem;
	color: var(--tbb-text);
}

.bmi-calculator .bmi-chart {
	display: flex;
	gap: 0.75rem;
	flex-wrap: wrap;
}

.bmi-calculator .chart-bar {
	flex: 1;
	min-width: 150px;
	padding: 1.25rem;
	border-radius: var(--tbb-radius-sm);
	text-align: center;
	color: #fff;
	font-weight: 500;
	font-size: 1.2rem;
	transition: transform var(--tbb-transition);
}

.bmi-calculator .chart-bar:hover {
	transform: scale(1.05);
}

.bmi-calculator .chart-underweight {
	background: linear-gradient(135deg, var(--bmi-blue), var(--bmi-blue-dark));
}

.bmi-calculator .chart-normal {
	background: linear-gradient(135deg, var(--bmi-green), var(--bmi-green-dark));
}

.bmi-calculator .chart-overweight {
	background: linear-gradient(135deg, var(--bmi-orange), var(--bmi-orange-dark));
}

.bmi-calculator .chart-obese {
	background: linear-gradient(135deg, var(--bmi-red), var(--bmi-red-dark));
}

.bmi-calculator .chart-label {
	display: block;
	font-size: 1.3rem;
	font-weight: 600;
	margin-bottom: 0.5rem;
}

.bmi-calculator .chart-range {
	display: block;
	font-size: 1.2rem;
	opacity: 0.95;
}

/* ── Health Recommendations ─────────────────────────────────────────────── */
.bmi-calculator .health-recommendations {
	background: var(--tbb-success-light);
	border: 1px solid var(--bmi-green-border);
	border-radius: var(--tbb-radius-sm);
	padding: 1.75rem;
	margin-bottom: 2rem;
}

.bmi-calculator .health-recommendations h3 {
	font-size: 1.5rem;
	margin: 0 0 1rem;
	color: var(--tbb-text);
}

.bmi-calculator #recommendations-list {
	list-style: none;
	padding: 0;
	margin: 0;
}

.bmi-calculator #recommendations-list li {
	padding: 0.75rem 0;
	padding-left: 2rem;
	position: relative;
	font-size: 1.3rem;
	line-height: 1.6;
	color: var(--tbb-text);
	border-bottom: 1px solid var(--bmi-green-row-border);
}

.bmi-calculator #recommendations-list li:last-child {
	border-bottom: none;
}

.bmi-calculator #recommendations-list li::before {
	content: '✓';
	position: absolute;
	left: 0;
	color: var(--bmi-green);
	font-weight: 700;
	font-size: 1.4rem;
}

/* ── Results Container ──────────────────────────────────────────────────── */
.bmi-calculator .results-container {
	animation: fadeIn 300ms ease-out;
}

@keyframes fadeIn {
	from {
		opacity: 0;
		transform: translateY(10px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

/* ── Reduced-motion accessibility ───────────────────────────────────────── */
@media ( prefers-reduced-motion: reduce ) {
	/* Remove fade-in on results panel */
	.bmi-calculator .results-container {
		animation: none;
	}

	/* Remove slide-in on goal result */
	.bmi-calculator .goal-result {
		animation: none;
	}

	/* Remove scale transform on chart bar hover */
	.bmi-calculator .chart-bar:hover {
		transform: none;
	}

	/* Remove raise transform on goal button hover */
	.bmi-calculator .goal-btn:hover {
		transform: none;
	}
}

/* ── BMI Responsive ────────────────────────────────────────────────────── */
@media ( max-width: 600px ) {
	.bmi-calculator .result-number {
		font-size: 2.3rem;
	}

	.bmi-calculator .result-unit {
		font-size: 1.2rem;
	}

	.bmi-calculator .result-row {
		grid-template-columns: 1fr;
		gap: 1rem;
	}

	.bmi-calculator .goal-options {
		grid-template-columns: 1fr;
	}

	.bmi-calculator .bmi-chart {
		flex-direction: column;
	}

	.bmi-calculator .chart-bar {
		min-width: 100%;
	}

	.bmi-calculator .interpretation-section,
	.bmi-calculator .goal-calculator-section,
	.bmi-calculator .health-recommendations {
		padding: 1.25rem;
	}

	.bmi-calculator .bmi-chart-container {
		padding: 1.25rem;
	}
}