/**
 * Appel Energy Calculator — frontend styles
 * Version: 1.2.1
 *
 * Color tokens:
 *   --aec-heading : #24364b  (primary heading)
 *   --aec-accent  : #b8681d  (accent / button)
 *   --aec-hover   : #9d5716  (button hover)
 *   --aec-muted   : #5f6b76  (muted text)
 *   --aec-border  : light gray borders
 *   --aec-card    : #ffffff  (card background)
 */

.appel-energy-calculator {
	--aec-heading: #24364b;
	--aec-accent: #b8681d;
	--aec-hover: #9d5716;
	--aec-muted: #5f6b76;
	--aec-border: #e2e6eb;
	--aec-card: #ffffff;
	--aec-bg: #f7f8fa;
	--aec-radius: 14px;

	box-sizing: border-box;
	max-width: 920px;
	margin: 0 auto;
	padding: 28px;
	background: var(--aec-bg);
	border: 1px solid var(--aec-border);
	border-radius: var(--aec-radius);
	font-family: inherit;
	color: var(--aec-heading);
}

.appel-energy-calculator *,
.appel-energy-calculator *::before,
.appel-energy-calculator *::after {
	box-sizing: border-box;
}

/* ---------- Header ---------- */
.appel-energy-calculator__header {
	text-align: center;
	margin-bottom: 24px;
}

.appel-energy-calculator__title {
	margin: 0 0 6px;
	color: var(--aec-heading);
	font-size: 26px;
	font-weight: 700;
	line-height: 1.2;
}

.appel-energy-calculator__subtitle {
	margin: 0;
	color: var(--aec-muted);
	font-size: 15px;
	line-height: 1.5;
}

/* ---------- Form ---------- */
.appel-energy-calculator__form {
	display: grid;
	grid-template-columns: 1fr 1fr auto;
	gap: 16px;
	align-items: end;
}

.appel-energy-calculator__field {
	display: flex;
	flex-direction: column;
}

.appel-energy-calculator__label {
	display: block;
	margin-bottom: 6px;
	font-size: 13px;
	font-weight: 600;
	color: var(--aec-heading);
}

.appel-energy-calculator__input,
.appel-energy-calculator__select {
	width: 100%;
	height: 44px;
	padding: 0 12px;
	font-size: 15px;
	color: var(--aec-heading);
	background: var(--aec-card);
	border: 1px solid var(--aec-border);
	border-radius: 10px;
	transition: border-color 0.15s ease, box-shadow 0.15s ease;
	-webkit-appearance: none;
	appearance: none;
}

.appel-energy-calculator__input:focus,
.appel-energy-calculator__select:focus {
	outline: none;
	border-color: var(--aec-accent);
	box-shadow: 0 0 0 3px rgba(184, 104, 29, 0.15);
}

/* ---------- Button ---------- */
.appel-energy-calculator__actions {
	display: flex;
}

.appel-energy-calculator__button {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	height: 44px;
	min-width: 130px;
	padding: 0 22px;
	font-size: 15px;
	font-weight: 600;
	color: #ffffff;
	background: var(--aec-accent);
	border: none;
	border-radius: 10px;
	cursor: pointer;
	transition: background-color 0.15s ease, transform 0.05s ease;
}

.appel-energy-calculator__button:hover,
.appel-energy-calculator__button:focus {
	background: var(--aec-hover);
	color: #ffffff;
	outline: none;
}

.appel-energy-calculator__button:active {
	transform: translateY(1px);
}

.appel-energy-calculator__button:disabled {
	cursor: not-allowed;
	opacity: 0.7;
}

/* Spinner (hidden until .is-loading) */
.appel-energy-calculator__spinner {
	display: none;
	width: 16px;
	height: 16px;
	border: 2px solid rgba(255, 255, 255, 0.5);
	border-top-color: #ffffff;
	border-radius: 50%;
	animation: appel-spin 0.7s linear infinite;
}

.appel-energy-calculator__button.is-loading .appel-energy-calculator__spinner {
	display: inline-block;
}

@keyframes appel-spin {
	to {
		transform: rotate(360deg);
	}
}

/* ---------- Results area ---------- */
.appel-energy-calculator__results {
	margin-top: 28px;
}

.appel-energy-calculator__hint,
.appel-energy-calculator__state {
	text-align: center;
	color: var(--aec-muted);
	font-size: 14px;
	padding: 18px 12px;
	margin: 0;
}

.appel-energy-calculator__state--error {
	color: #b3261e;
}

.appel-energy-calculator__grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
	gap: 12px;
}

/* ---------- Result card ---------- */
.appel-energy-card {
	position: relative;
	background: var(--aec-card);
	border: 1px solid var(--aec-border);
	border-radius: 12px;
	padding: 14px 14px 12px;
	box-shadow: 0 1px 2px rgba(36, 54, 75, 0.04);
	transition: box-shadow 0.15s ease, transform 0.05s ease;
}

.appel-energy-card:hover {
	box-shadow: 0 4px 12px rgba(36, 54, 75, 0.08);
}

.appel-energy-card__provider {
	margin: 0 0 1px;
	font-size: 14px;
	font-weight: 700;
	color: var(--aec-heading);
	line-height: 1.2;
}

.appel-energy-card__plan {
	margin: 0 0 8px;
	font-size: 12px;
	color: var(--aec-muted);
	line-height: 1.3;
}

.appel-energy-card__estimated {
	margin: 0 0 8px;
	font-size: 20px;
	font-weight: 700;
	color: var(--aec-accent);
	line-height: 1.1;
}

.appel-energy-card__estimated small {
	display: block;
	margin-top: 2px;
	font-size: 10px;
	font-weight: 600;
	color: var(--aec-muted);
	text-transform: uppercase;
	letter-spacing: 0.04em;
}

.appel-energy-card__details {
	display: flex;
	flex-direction: column;
	gap: 4px;
	margin: 0;
	padding: 0;
	list-style: none;
}

.appel-energy-card__details li {
	display: flex;
	justify-content: space-between;
	gap: 10px;
	font-size: 12px;
	color: var(--aec-muted);
}

.appel-energy-card__details li strong {
	color: var(--aec-heading);
	font-weight: 600;
}

.appel-energy-card__discount {
	display: inline-block;
	margin-top: 8px;
	padding: 3px 8px;
	font-size: 11px;
	font-weight: 600;
	color: var(--aec-accent);
	background: rgba(184, 104, 29, 0.10);
	border-radius: 999px;
	line-height: 1.4;
}

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
	.appel-energy-calculator {
		padding: 20px 16px;
	}

	.appel-energy-calculator__title {
		font-size: 22px;
	}

	.appel-energy-calculator__form {
		grid-template-columns: 1fr;
		gap: 14px;
	}

	.appel-energy-calculator__button {
		width: 100%;
	}

	.appel-energy-calculator__grid {
		grid-template-columns: 1fr;
	}
}