.tee-ree-calc {
	--tee-ree-primary: #0f766e;
	--tee-ree-primary-dark: #0d5c56;
	--tee-ree-bg: #f0fdfa;
	--tee-ree-border: #99f6e4;
	--tee-ree-text: #134e4a;
	--tee-ree-muted: #5f7a78;
	--tee-ree-error: #b91c1c;
	--tee-ree-error-bg: #fef2f2;
	--tee-ree-shadow: 0 10px 30px rgba(15, 118, 110, 0.12);

	font-family: Tahoma, "Segoe UI", Arial, sans-serif;
	max-width: 640px;
	margin: 2rem auto;
	padding: 1.75rem;
	background: #fff;
	border: 1px solid var(--tee-ree-border);
	border-radius: 16px;
	box-shadow: var(--tee-ree-shadow);
	color: var(--tee-ree-text);
	line-height: 1.7;
}

.tee-ree-calc__header {
	margin-bottom: 1.5rem;
}

.tee-ree-calc__title {
	margin: 0 0 0.5rem;
	font-size: 1.5rem;
	font-weight: 700;
	color: var(--tee-ree-primary-dark);
}

.tee-ree-calc__subtitle {
	margin: 0;
	font-size: 0.95rem;
	color: var(--tee-ree-muted);
}

.tee-ree-calc__form {
	display: flex;
	flex-direction: column;
	gap: 1.25rem;
}

.tee-ree-calc__fieldset {
	border: 1px solid var(--tee-ree-border);
	border-radius: 12px;
	padding: 1rem 1.25rem;
	margin: 0;
	background: var(--tee-ree-bg);
}

.tee-ree-calc__legend {
	font-weight: 600;
	padding: 0 0.5rem;
}

.tee-ree-calc__radio {
	display: inline-flex;
	align-items: center;
	gap: 0.4rem;
	margin-left: 1.25rem;
	cursor: pointer;
}

.tee-ree-calc__radio:first-of-type {
	margin-right: 0.5rem;
}

.tee-ree-calc__grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 1rem;
}

.tee-ree-calc__field {
	display: flex;
	flex-direction: column;
	gap: 0.35rem;
}

.tee-ree-calc__field--full {
	grid-column: 1 / -1;
}

.tee-ree-calc__field label {
	font-size: 0.9rem;
	font-weight: 600;
}

.tee-ree-calc__field input,
.tee-ree-calc__field select {
	width: 100%;
	padding: 0.65rem 0.75rem;
	border: 1px solid #cbd5e1;
	border-radius: 8px;
	font-size: 1rem;
	font-family: inherit;
	background: #fff;
	color: var(--tee-ree-text);
	box-sizing: border-box;
	transition: border-color 0.2s, box-shadow 0.2s;
}

.tee-ree-calc__field input:focus,
.tee-ree-calc__field select:focus {
	outline: none;
	border-color: var(--tee-ree-primary);
	box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.15);
}

.tee-ree-calc__submit {
	align-self: flex-start;
	padding: 0.75rem 2rem;
	background: var(--tee-ree-primary);
	color: #fff;
	border: none;
	border-radius: 999px;
	font-size: 1rem;
	font-weight: 600;
	font-family: inherit;
	cursor: pointer;
	transition: background 0.2s, transform 0.1s;
}

.tee-ree-calc__submit:hover {
	background: var(--tee-ree-primary-dark);
}

.tee-ree-calc__submit:active {
	transform: scale(0.98);
}

.tee-ree-calc__error {
	margin-top: 1rem;
	padding: 0.75rem 1rem;
	background: var(--tee-ree-error-bg);
	color: var(--tee-ree-error);
	border-radius: 8px;
	font-size: 0.9rem;
}

.tee-ree-calc__results {
	margin-top: 1.5rem;
	display: flex;
	flex-direction: column;
	gap: 1rem;
}

.tee-ree-calc__results-title {
	margin: 0 0 0.25rem;
	font-size: 1.15rem;
	color: var(--tee-ree-primary-dark);
}

.tee-ree-calc__result-card {
	padding: 1.25rem;
	border-radius: 12px;
	background: var(--tee-ree-bg);
	border: 1px solid var(--tee-ree-border);
}

.tee-ree-calc__result-card--tee {
	background: #ecfdf5;
}

.tee-ree-calc__result-label {
	display: block;
	font-size: 0.9rem;
	font-weight: 600;
	margin-bottom: 0.35rem;
}

.tee-ree-calc__result-value {
	display: block;
	font-size: 2rem;
	font-weight: 700;
	color: var(--tee-ree-primary-dark);
	line-height: 1.2;
}

.tee-ree-calc__result-unit {
	display: block;
	font-size: 0.85rem;
	color: var(--tee-ree-muted);
	margin-top: 0.15rem;
}

.tee-ree-calc__result-note {
	margin: 0.75rem 0 0;
	font-size: 0.85rem;
	color: var(--tee-ree-muted);
}

.tee-ree-calc__disclaimer {
	margin: 1.5rem 0 0;
	font-size: 0.8rem;
	color: var(--tee-ree-muted);
	text-align: center;
}

@media (max-width: 600px) {
	.tee-ree-calc {
		margin: 1rem;
		padding: 1.25rem;
	}

	.tee-ree-calc__grid {
		grid-template-columns: 1fr;
	}

	.tee-ree-calc__submit {
		width: 100%;
		text-align: center;
	}
}