/* ===========================================================
   Solar Calculator Form — Frontend Theme (Blue → White)
   =========================================================== */

/* ---------- آیکون‌های SVG درون‌خطی ---------- */
.scfrm-icon {
	width: 1em;
	height: 1em;
	flex-shrink: 0;
	vertical-align: -0.15em;
	color: currentColor;
}

.solarcalc-wrap {
	--sc-blue-900: #0b3a6b;
	--sc-blue-800: #0f4c8c;
	--sc-blue-700: #1361ab;
	--sc-blue-600: #1a73c9;
	--sc-blue-500: #2f8ee0;
	--sc-blue-400: #5ba8ec;
	--sc-blue-100: #e8f2fc;
	--sc-blue-50:  #f4f9fe;
	--sc-ink:      #16324f;
	--sc-muted:    #5c7185;
	--sc-border:   #dbe7f4;
	--sc-radius:   14px;

	max-width: 920px;
	margin: 24px auto;
	font-family: 'Vazirmatn', Tahoma, sans-serif;
	color: var(--sc-ink);
	background: linear-gradient(180deg, #ffffff 0%, var(--sc-blue-50) 100%);
	border: 1px solid var(--sc-border);
	border-radius: 20px;
	padding: 28px 28px 24px;
	box-shadow: 0 12px 40px rgba(15, 76, 140, 0.10), 0 2px 8px rgba(15, 76, 140, 0.06);
}

/* ---------- Top bar (steps + reset button) ---------- */
.solarcalc-topbar {
	display: flex;
	align-items: flex-start;
	gap: 14px;
	margin-bottom: 28px;
}

.solarcalc-btn-reset {
	flex-shrink: 0;
	display: inline-flex;
	align-items: center;
	gap: 6px;
	padding: 10px 16px;
	background: #fff;
	color: #b3261e;
	border: 1.5px solid #f3c9c9;
	border-radius: 10px;
	font-size: 13.5px;
	font-weight: 600;
	cursor: pointer;
	white-space: nowrap;
	transition: all .15s ease;
}

.solarcalc-btn-reset:hover {
	background: #fdecec;
	border-color: #e79a9a;
}

.solarcalc-reset-icon {
	width: 15px;
	height: 15px;
}

.solarcalc-field-hint {
	display: block;
	margin-top: 5px;
	font-size: 12px;
	color: var(--sc-muted);
}

.solarcalc-fallback-note {
	background: #fff8e6;
	color: #8a6100;
	border: 1px solid #f2dca0;
	padding: 12px 14px;
	border-radius: 10px;
	margin-bottom: 18px;
	font-size: 13.5px;
}

.solarcalc-warning {
	background: #fdecea;
	color: #a32620;
	border: 1px solid #f3c1bd;
	padding: 12px 14px;
	border-radius: 10px;
	margin: 0 0 18px;
	font-size: 13.5px;
}

.solarcalc-two-col {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 16px;
	margin-bottom: 10px;
}

@media (max-width: 640px) {
	.solarcalc-two-col {
		grid-template-columns: 1fr;
	}
}

/* ---------- Step indicator ---------- */
.solarcalc-steps {
	display: flex;
	justify-content: space-between;
	margin-bottom: 0;
	flex-wrap: wrap;
	gap: 8px;
	flex: 1;
}

.solarcalc-step-indicator {
	flex: 1;
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 7px;
	text-align: center;
	padding: 12px 8px;
	background: #fff;
	border: 1px solid var(--sc-border);
	border-radius: 10px;
	font-size: 13.5px;
	color: var(--sc-muted);
	font-weight: 600;
	transition: all .25s ease;
}

.solarcalc-step-indicator .scfrm-icon {
	width: 16px;
	height: 16px;
}

/* با ۵ مرحله، در صفحات باریک‌تر متن هر مرحله جمع‌وجورتر می‌شود تا نوار مراحل شکسته نشود */
@media (max-width: 760px) {
	.solarcalc-step-indicator {
		font-size: 12px;
		padding: 10px 5px;
		gap: 5px;
	}
}

@media (max-width: 560px) {
	.solarcalc-step-indicator span {
		display: none;
	}
	.solarcalc-step-indicator .scfrm-icon {
		width: 19px;
		height: 19px;
	}
}

.solarcalc-step-indicator.active {
	background: linear-gradient(135deg, var(--sc-blue-700), var(--sc-blue-500));
	color: #fff;
	border-color: transparent;
	box-shadow: 0 6px 16px rgba(19, 97, 171, 0.35);
	transform: translateY(-1px);
}

/* ---------- Panels ---------- */
.solarcalc-panel h3 {
	margin-top: 0;
	display: flex;
	align-items: center;
	gap: 9px;
	color: var(--sc-blue-800);
	font-size: 19px;
	font-weight: 700;
	border-inline-start: 4px solid var(--sc-blue-500);
	padding-inline-start: 10px;
}

.solarcalc-panel h3 .scfrm-icon,
.solarcalc-panel h4 .scfrm-icon {
	width: 20px;
	height: 20px;
	color: var(--sc-blue-500);
}

.solarcalc-panel h4 {
	display: flex;
	align-items: center;
	gap: 8px;
	color: var(--sc-blue-800);
	font-size: 16px;
	font-weight: 700;
	margin: 22px 0 10px;
}

/* ---------- Category grid ---------- */
.solarcalc-cat-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
	gap: 16px;
	margin-top: 18px;
}

.solarcalc-cat-btn {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 10px;
	padding: 32px 12px;
	font-size: 17px;
	font-weight: 600;
	border: 2px solid var(--sc-blue-100);
	background: #fff;
	color: var(--sc-blue-700);
	border-radius: var(--sc-radius);
	cursor: pointer;
	transition: all .2s ease;
	box-shadow: 0 2px 6px rgba(15, 76, 140, 0.05);
}

.solarcalc-cat-icon {
	width: 34px;
	height: 34px;
	color: var(--sc-blue-500);
	transition: color .2s ease;
}

.solarcalc-cat-btn.selected .solarcalc-cat-icon {
	color: #fff;
}

.solarcalc-cat-btn:hover {
	border-color: var(--sc-blue-400);
	transform: translateY(-2px);
	box-shadow: 0 8px 20px rgba(15, 76, 140, 0.14);
}

.solarcalc-cat-btn.selected {
	background: linear-gradient(135deg, var(--sc-blue-700), var(--sc-blue-500));
	border-color: transparent;
	color: #fff;
	box-shadow: 0 8px 22px rgba(19, 97, 171, 0.35);
}

/* ---------- Device accordion (grouped by category) ---------- */
.solarcalc-accordion {
	display: flex;
	flex-direction: column;
	gap: 12px;
	margin-top: 6px;
}

.solarcalc-accordion-group {
	border: 1px solid var(--sc-border);
	border-radius: var(--sc-radius);
	background: #fff;
	overflow: hidden;
	box-shadow: 0 2px 8px rgba(15, 76, 140, 0.04);
	transition: box-shadow .2s ease;
}

.solarcalc-accordion-group.open {
	box-shadow: 0 6px 18px rgba(15, 76, 140, 0.10);
}

.solarcalc-accordion-header {
	width: 100%;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 10px;
	padding: 16px 18px;
	background: var(--sc-blue-50);
	border: none;
	cursor: pointer;
	font-family: inherit;
	text-align: right;
	transition: background .2s ease;
}

.solarcalc-accordion-header:hover {
	background: var(--sc-blue-100);
}

.solarcalc-accordion-title {
	display: flex;
	align-items: center;
	gap: 10px;
	font-weight: 700;
	font-size: 15px;
	color: var(--sc-blue-800);
}

.solarcalc-group-icon {
	width: 18px;
	height: 18px;
	color: var(--sc-blue-600);
	flex-shrink: 0;
}

.solarcalc-accordion-count {
	font-weight: 400;
	color: var(--sc-muted);
	font-size: 13px;
}

.solarcalc-accordion-icon {
	font-size: 20px;
	color: var(--sc-blue-600);
	transition: transform .2s ease;
	flex-shrink: 0;
}

.solarcalc-accordion-group.open .solarcalc-accordion-icon {
	transform: rotate(90deg);
}

.solarcalc-accordion-body {
	/* حالت اولیه (قبل از هر تعامل کاربر) بسته است؛ باز/بسته شدن پس از آن کاملاً توسط
	   jQuery (slideDown/slideUp با استایل inline) کنترل می‌شود تا با کلاس CSS تداخل نکند. */
	display: none;
	padding: 14px 16px 16px;
}

.solarcalc-accordion-body .solarcalc-device-list {
	margin: 0;
}

.solarcalc-input-unit {
	display: flex;
	align-items: stretch;
	border: 1px solid var(--sc-border);
	border-radius: 8px;
	overflow: hidden;
	background: var(--sc-blue-50);
	transition: border-color .2s ease, box-shadow .2s ease;
}

.solarcalc-input-unit:focus-within {
	border-color: var(--sc-blue-500);
	box-shadow: 0 0 0 3px rgba(47, 142, 224, 0.15);
	background: #fff;
}

.solarcalc-input-unit input {
	flex: 1;
	min-width: 0;
	border: none !important;
	background: transparent !important;
	box-shadow: none !important;
}

.solarcalc-input-unit input:focus {
	outline: none;
}

.solarcalc-unit-tag {
	flex-shrink: 0;
	display: flex;
	align-items: center;
	padding: 0 8px;
	font-size: 11.5px;
	font-weight: 600;
	color: var(--sc-blue-700);
	background: var(--sc-blue-100);
	white-space: nowrap;
}

/* ---------- Live totals bar ---------- */
.solarcalc-live-totals {
	display: flex;
	gap: 16px;
	flex-wrap: wrap;
	margin-top: 20px;
	padding: 16px 20px;
	background: linear-gradient(135deg, var(--sc-blue-700), var(--sc-blue-500));
	border-radius: var(--sc-radius);
	box-shadow: 0 8px 22px rgba(19, 97, 171, 0.25);
	position: sticky;
	bottom: 10px;
}

.solarcalc-live-item {
	flex: 1;
	min-width: 160px;
	display: flex;
	flex-direction: column;
	gap: 4px;
	color: #fff;
}

.solarcalc-live-label {
	display: flex;
	align-items: center;
	gap: 6px;
	font-size: 12.5px;
	opacity: 0.85;
}

.solarcalc-live-label .scfrm-icon {
	width: 14px;
	height: 14px;
}

.solarcalc-live-value {
	font-size: 20px;
	font-weight: 800;
}

/* ---------- Device list ---------- */
.solarcalc-device-list {
	display: flex;
	flex-direction: column;
	gap: 10px;
	margin: 18px 0;
}

.solarcalc-device-row {
	display: grid;
	grid-template-columns: 24px 2fr 1fr 1fr 1fr;
	align-items: center;
	gap: 10px;
	padding: 12px 14px;
	background: #fff;
	border: 1px solid var(--sc-border);
	border-radius: 10px;
	transition: border-color .2s ease, box-shadow .2s ease;
}

.solarcalc-device-row:hover {
	border-color: var(--sc-blue-400);
	box-shadow: 0 4px 12px rgba(15, 76, 140, 0.08);
}

.solarcalc-device-row label {
	font-weight: 600;
	color: var(--sc-ink);
}

.solarcalc-device-row input[type="checkbox"] {
	width: 18px;
	height: 18px;
	accent-color: var(--sc-blue-600);
}

.solarcalc-device-row input[type="number"] {
	width: 100%;
	padding: 8px 10px;
	border: 1px solid var(--sc-border);
	border-radius: 8px;
	background: var(--sc-blue-50);
	color: var(--sc-ink);
}

.solarcalc-device-row input[type="number"]:focus {
	outline: none;
	border-color: var(--sc-blue-500);
	background: #fff;
	box-shadow: 0 0 0 3px rgba(47, 142, 224, 0.15);
}

.solarcalc-usage-badge {
	font-size: 11.5px;
	padding: 3px 9px;
	border-radius: 20px;
	text-align: center;
	font-weight: 600;
	display: inline-block;
}

.usage-essential    { background: #fde3e3; color: #b3261e; }
.usage-daily        { background: var(--sc-blue-100); color: var(--sc-blue-700); }
.usage-nonessential { background: #eef1f4; color: #667180; }

/* ---------- Custom device box ---------- */
.solarcalc-custom-device-box {
	margin-top: 22px;
	padding: 20px 22px 22px;
	background: var(--sc-blue-50);
	border: 1.5px dashed var(--sc-blue-400);
	border-radius: var(--sc-radius);
}

.solarcalc-custom-hint {
	margin: -4px 0 16px;
	font-size: 12.5px;
	color: var(--sc-muted);
	line-height: 1.9;
}

/* گرید مرتب و خواناتر: هر فیلد برچسب مستقل خودش را دارد و در صفحات بزرگ در چند ستون
   منظم می‌چیند؛ ستون نام وسیله (که شامل جستجوی خودکار است) عریض‌تر از بقیه است. */
.solarcalc-custom-grid {
	display: grid;
	grid-template-columns: 2.2fr 1fr 1fr 0.8fr 1.2fr auto;
	gap: 14px;
	align-items: end;
}

.solarcalc-custom-field {
	display: flex;
	flex-direction: column;
	gap: 6px;
	min-width: 0;
}

.solarcalc-custom-field label {
	display: flex;
	align-items: center;
	gap: 5px;
	font-size: 12.5px;
	font-weight: 700;
	color: var(--sc-blue-800);
}

.solarcalc-custom-field label .scfrm-icon {
	width: 13px;
	height: 13px;
	color: var(--sc-blue-500);
}

.solarcalc-custom-field-btn {
	justify-content: flex-end;
}

.solarcalc-custom-field-btn .solarcalc-btn-secondary {
	width: 100%;
	padding: 10px 16px;
	white-space: nowrap;
	background: #fff;
}

.solarcalc-custom-grid input, .solarcalc-custom-grid select {
	padding: 10px 12px;
	border: 1px solid var(--sc-border);
	border-radius: 9px;
	width: 100%;
	box-sizing: border-box;
	background: #fff;
	color: var(--sc-ink);
	font-size: 14px;
	height: 42px;
}

.solarcalc-custom-grid .solarcalc-input-unit {
	background: #fff;
	height: 42px;
}

.solarcalc-custom-grid input:focus, .solarcalc-custom-grid select:focus {
	outline: none;
	border-color: var(--sc-blue-500);
	box-shadow: 0 0 0 3px rgba(47, 142, 224, 0.15);
}

/* ---------- Custom device name autocomplete ---------- */
.solarcalc-autocomplete {
	position: relative;
}

.solarcalc-suggestions {
	position: absolute;
	z-index: 20;
	top: calc(100% + 6px);
	right: 0;
	left: 0;
	max-height: 280px;
	overflow-y: auto;
	background: #fff;
	border: 1px solid var(--sc-border);
	border-radius: 12px;
	box-shadow: 0 14px 32px rgba(15, 76, 140, 0.18);
	padding: 6px;
}

.solarcalc-suggestion-item {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 10px;
	width: 100%;
	padding: 9px 12px;
	background: transparent;
	border: none;
	border-radius: 8px;
	text-align: right;
	font-family: inherit;
	cursor: pointer;
	color: var(--sc-ink);
	font-size: 13.5px;
	transition: background .15s ease;
}

.solarcalc-suggestion-item:hover,
.solarcalc-suggestion-item:focus {
	background: var(--sc-blue-50);
	outline: none;
}

.solarcalc-suggestion-name {
	font-weight: 600;
}

.solarcalc-suggestion-watt {
	flex-shrink: 0;
	font-size: 12px;
	font-weight: 700;
	color: var(--sc-blue-700);
	background: var(--sc-blue-100);
	padding: 2px 9px;
	border-radius: 20px;
}

.solarcalc-suggestion-empty {
	display: flex;
	align-items: center;
	gap: 7px;
	padding: 10px 12px;
	font-size: 12.5px;
	color: var(--sc-muted);
	line-height: 1.8;
}

.solarcalc-suggestion-empty .scfrm-icon {
	width: 14px;
	height: 14px;
	flex-shrink: 0;
	color: var(--sc-blue-500);
}

@media (max-width: 900px) {
	.solarcalc-custom-grid {
		grid-template-columns: 1fr 1fr;
	}
	.solarcalc-custom-field-name {
		grid-column: 1 / -1;
	}
	.solarcalc-custom-field-btn {
		grid-column: 1 / -1;
	}
}

#solarcalc-custom-device-list {
	margin-top: 14px;
}

.solarcalc-custom-item {
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding: 10px 14px;
	background: #fff;
	border: 1px solid var(--sc-border);
	border-radius: 8px;
	margin-bottom: 8px;
}

.solarcalc-custom-item span {
	display: flex;
	align-items: center;
	gap: 8px;
}

.solarcalc-item-icon {
	width: 15px;
	height: 15px;
	color: var(--sc-blue-500);
	flex-shrink: 0;
}

.solarcalc-custom-item button {
	display: inline-flex;
	align-items: center;
	gap: 5px;
	background: #e35353;
	color: #fff;
	border: none;
	padding: 5px 12px;
	border-radius: 6px;
	cursor: pointer;
	font-weight: 600;
	transition: background .2s ease;
}

.solarcalc-custom-item button .scfrm-icon {
	width: 13px;
	height: 13px;
}

.solarcalc-custom-item button:hover {
	background: #c73f3f;
}

/* ---------- Contact form ---------- */
.solarcalc-form-grid {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 18px;
	margin-top: 18px;
}

.solarcalc-field label {
	display: block;
	margin-bottom: 7px;
	font-weight: 600;
	color: var(--sc-blue-800);
	font-size: 14px;
}

.solarcalc-field input {
	width: 100%;
	padding: 11px 12px;
	border: 1px solid var(--sc-border);
	border-radius: 9px;
	box-sizing: border-box;
	background: #fff;
	color: var(--sc-ink);
	font-size: 14.5px;
	transition: border-color .2s ease, box-shadow .2s ease;
}

.solarcalc-field input:focus {
	outline: none;
	border-color: var(--sc-blue-500);
	box-shadow: 0 0 0 3px rgba(47, 142, 224, 0.15);
}

/* ---------- Navigation buttons ---------- */
.solarcalc-nav {
	display: flex;
	justify-content: space-between;
	margin-top: 28px;
}

.solarcalc-btn-primary {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	background: linear-gradient(135deg, var(--sc-blue-700), var(--sc-blue-500));
	color: #fff;
	border: none;
	padding: 13px 28px;
	border-radius: 10px;
	cursor: pointer;
	font-size: 15px;
	font-weight: 700;
	box-shadow: 0 6px 16px rgba(19, 97, 171, 0.30);
	transition: transform .15s ease, box-shadow .15s ease;
}

.solarcalc-btn-primary .scfrm-icon {
	width: 16px;
	height: 16px;
}

.solarcalc-btn-primary:hover {
	transform: translateY(-1px);
	box-shadow: 0 10px 22px rgba(19, 97, 171, 0.38);
}

.solarcalc-btn-primary:disabled {
	opacity: .65;
	cursor: not-allowed;
	transform: none;
}

.solarcalc-btn-secondary {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	background: #fff;
	color: var(--sc-blue-700);
	border: 1.5px solid var(--sc-border);
	padding: 13px 28px;
	border-radius: 10px;
	cursor: pointer;
	font-size: 15px;
	font-weight: 600;
	transition: all .15s ease;
}

.solarcalc-btn-secondary .scfrm-icon {
	width: 15px;
	height: 15px;
}

.solarcalc-btn-secondary:hover {
	border-color: var(--sc-blue-400);
	background: var(--sc-blue-50);
}

/* ---------- Messages ---------- */
.solarcalc-error {
	background: #fdecec;
	color: #b3261e;
	border: 1px solid #f6c6c6;
	padding: 12px 14px;
	border-radius: 10px;
	margin-top: 14px;
	font-size: 14px;
}

.solarcalc-na {
	color: var(--sc-muted);
	font-style: italic;
	font-size: 13px;
}

.solarcalc-loading {
	text-align: center;
	padding: 50px 20px;
	font-size: 15.5px;
	color: var(--sc-blue-700);
	font-weight: 600;
}

.solarcalc-loading::before {
	content: '';
	display: block;
	width: 42px;
	height: 42px;
	margin: 0 auto 16px;
	border: 4px solid var(--sc-blue-100);
	border-top-color: var(--sc-blue-600);
	border-radius: 50%;
	animation: solarcalc-spin 0.9s linear infinite;
}

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

/* ---------- Map & summary boxes ---------- */
.solarcalc-map {
	height: 320px;
	border-radius: var(--sc-radius);
	margin-bottom: 18px;
	border: 1px solid var(--sc-border);
	overflow: hidden;
}

/* ---------- الزامی‌بودن فیلد ---------- */
.solarcalc-required {
	color: #c73f3f;
	font-weight: 700;
}

/* ---------- نقشه انتخاب محل نصب (مرحله ۳) ---------- */
.solarcalc-map-title {
	display: flex;
	align-items: center;
	gap: 8px;
}

.solarcalc-install-map {
	height: 340px;
	border-radius: var(--sc-radius);
	margin: 10px 0 18px;
	border: 1px solid var(--sc-border);
	overflow: hidden;
	background: var(--sc-blue-50);
}

/* ---------- راهنمای رنگ نقشه حرارتی تابش خورشیدی ---------- */
.solarcalc-heatmap-legend {
	display: flex;
	align-items: center;
	gap: 10px;
	margin: -8px 0 18px;
	font-size: 12.5px;
	color: var(--sc-muted);
}

.solarcalc-heatmap-legend-bar {
	flex: 1;
	height: 10px;
	border-radius: 6px;
	background: linear-gradient(90deg, #2f8ee0, #5be07e, #ffe066, #ffa64d, #e0432f);
}

.solarcalc-summary-box {
	background: #fff;
	border: 1px solid var(--sc-border);
	border-radius: var(--sc-radius);
	padding: 18px 20px;
	margin-bottom: 18px;
	box-shadow: 0 3px 10px rgba(15, 76, 140, 0.05);
}

.solarcalc-summary-box table {
	width: 100%;
	border-collapse: collapse;
}

.solarcalc-summary-box td {
	padding: 9px 6px;
	border-bottom: 1px solid var(--sc-blue-50);
	font-size: 14px;
}

.solarcalc-summary-box tr:last-child td {
	border-bottom: none;
}

.solarcalc-summary-box td:first-child {
	color: var(--sc-muted);
}

.solarcalc-summary-box td:last-child {
	font-weight: 700;
	text-align: left;
	color: var(--sc-ink);
}

.solarcalc-notes {
	background: var(--sc-blue-50);
	border: 1px solid var(--sc-blue-100);
	padding: 16px 18px;
	border-radius: var(--sc-radius);
	font-size: 13.5px;
	color: var(--sc-blue-900);
}

.solarcalc-notes-icon {
	width: 15px;
	height: 15px;
	color: #b3261e;
}

.solarcalc-notes ul {
	margin: 8px 0 0;
	padding-inline-start: 20px;
}

.solarcalc-notes li {
	margin-bottom: 4px;
}

#solarcalc-devices-summary {
	overflow-x: auto;
}

#solarcalc-devices-summary table {
	width: 100%;
	min-width: 560px;
	border-collapse: collapse;
	margin-bottom: 18px;
	border-radius: 10px;
	overflow: hidden;
	box-shadow: 0 3px 10px rgba(15, 76, 140, 0.05);
}

#solarcalc-devices-summary th, #solarcalc-devices-summary td {
	border: 1px solid var(--sc-border);
	padding: 9px 8px;
	text-align: center;
	font-size: 13px;
}

#solarcalc-devices-summary th {
	background: linear-gradient(135deg, var(--sc-blue-700), var(--sc-blue-500));
	color: #fff;
	font-weight: 700;
}

#solarcalc-devices-summary tr:nth-child(even) td {
	background: var(--sc-blue-50);
}

/* ---------- برندسازی گزارش PDF (لوگوی بیستون انرژی پارس) ---------- */
#solarcalc-pdf-content {
	position: relative;
	background: #fff;
	border-radius: var(--sc-radius);
}

/* واترمارک بسیار کم‌رنگ لوگو در پس‌زمینه کل گزارش؛ فقط تزئینی است و روی خوانایی جدول‌ها اثر نمی‌گذارد */
#solarcalc-pdf-content::before {
	content: '';
	position: absolute;
	inset: 0;
	background-image: url('../images/bep-logo.png');
	background-repeat: no-repeat;
	background-position: center 480px;
	background-size: 480px auto;
	opacity: 0.045;
	pointer-events: none;
	z-index: 0;
}

#solarcalc-pdf-content > * {
	position: relative;
	z-index: 1;
}

.solarcalc-pdf-letterhead {
	display: flex;
	align-items: center;
	gap: 16px;
	padding-bottom: 16px;
	margin-bottom: 18px;
	border-bottom: 2px solid var(--sc-blue-100);
}

.solarcalc-pdf-logo {
	height: 56px;
	width: auto;
	flex-shrink: 0;
}

.solarcalc-pdf-letterhead-text {
	display: flex;
	flex-direction: column;
	gap: 2px;
}

.solarcalc-pdf-letterhead-text strong {
	font-size: 16px;
	color: var(--sc-blue-800);
}

.solarcalc-pdf-letterhead-text span {
	font-size: 12.5px;
	color: var(--sc-muted);
}

.solarcalc-pdf-footer {
	margin-top: 20px;
	padding-top: 14px;
	border-top: 1px solid var(--sc-border);
	text-align: center;
	font-size: 11.5px;
	color: var(--sc-muted);
}

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
	.solarcalc-wrap {
		padding: 18px 16px;
		border-radius: 14px;
	}

	.solarcalc-device-row, .solarcalc-custom-grid, .solarcalc-form-grid {
		grid-template-columns: 1fr;
	}

	.solarcalc-nav {
		flex-direction: column-reverse;
		gap: 10px;
	}

	.solarcalc-topbar {
		flex-direction: column;
	}

	.solarcalc-btn-reset {
		width: 100%;
		justify-content: center;
	}

	.solarcalc-btn-primary, .solarcalc-btn-secondary {
		width: 100%;
	}
}