/* ============================================================
   Solar System Calculator — Frontend Styles
   All rules are scoped to .solar-calc-wrap to avoid conflicts.
   ============================================================ */

/* ── Custom properties ─────────────────────────────────────────────────────── */
.solar-calc-wrap {
    --sc-primary:       #1377C2;
    --sc-primary-dark:  #0d5fa3;
    --sc-primary-light: #ddeeff;
    --sc-primary-xlt:   #f0f7ff;
    --sc-accent:        #F44336;
    --sc-text:          #1a1a2e;
    --sc-text-muted:    #6b7280;
    --sc-border:        #e5e7eb;
    --sc-surface:       #ffffff;
    --sc-surface-2:     #f9fafb;
    --sc-radius:        12px;
    --sc-radius-sm:     8px;
    --sc-shadow:        0 1px 3px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.06);
    --sc-shadow-hover:  0 4px 12px rgba(19,119,194,.22);
    --sc-transition:    all .2s ease;

    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 15px;
    color: var(--sc-text);
    line-height: 1.5;
    max-width: 1100px;
    margin: 0 auto;
    box-sizing: border-box;
}

.solar-calc-wrap *, .solar-calc-wrap *::before, .solar-calc-wrap *::after {
    box-sizing: inherit;
}

/* ── Header ─────────────────────────────────────────────────────────────────── */
.solar-calc-wrap .sc-header {
    text-align: center;
    padding: 40px 24px 32px;
    background: linear-gradient(135deg, var(--sc-primary-light) 0%, #fff8e1 100%);
    border-radius: var(--sc-radius) var(--sc-radius) 0 0;
    border: 1px solid var(--sc-border);
    border-bottom: none;
}

.solar-calc-wrap .sc-header-sun {
    font-size: 52px;
    display: block;
    margin-bottom: 12px;
    animation: sc-spin-slow 20s linear infinite;
}

@keyframes sc-spin-slow {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

.solar-calc-wrap .sc-title {
    font-size: 26px;
    font-weight: 700;
    color: var(--sc-primary-dark);
    margin: 0 0 8px;
    line-height: 1.2;
}

.solar-calc-wrap .sc-subtitle {
    font-size: 15px;
    color: var(--sc-text-muted);
    margin: 0;
}

/* ── Sections ───────────────────────────────────────────────────────────────── */
.solar-calc-wrap .sc-section {
    background: var(--sc-surface);
    border: 1px solid var(--sc-border);
    border-top: none;
    padding: 28px 28px 32px;
}

.solar-calc-wrap .sc-section:last-child {
    border-radius: 0 0 var(--sc-radius) var(--sc-radius);
}

.solar-calc-wrap .sc-section-head {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
}

.solar-calc-wrap .sc-step-badge {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    background: var(--sc-primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    margin-top: 2px;
}

.solar-calc-wrap .sc-section-head h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 0 0 4px;
    color: var(--sc-text);
}

.solar-calc-wrap .sc-section-desc {
    font-size: 13px;
    color: var(--sc-text-muted);
    margin: 0;
}

/* ── Appliance grid ─────────────────────────────────────────────────────────── */
.solar-calc-wrap .sc-appliances-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 10px;
    margin-bottom: 24px;
}

.solar-calc-wrap .sc-appliance-card {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--sc-border);
    border-radius: var(--sc-radius-sm);
    background: var(--sc-surface-2);
    transition: var(--sc-transition);
    overflow: hidden;
}

.solar-calc-wrap .sc-appliance-card:hover {
    border-color: var(--sc-primary);
    background: var(--sc-primary-xlt);
}

.solar-calc-wrap .sc-appliance-card.sc-active {
    border-color: var(--sc-primary);
    background: var(--sc-primary-xlt);
    box-shadow: 0 0 0 2px rgba(19,119,194,.12);
}

/* Top row: icon, name/watts, qty controls */
.solar-calc-wrap .sc-app-top {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 12px 8px;
}

.solar-calc-wrap .sc-app-icon {
    font-size: 22px;
    flex-shrink: 0;
    width: 32px;
    text-align: center;
}

.solar-calc-wrap .sc-app-info {
    flex: 1;
    min-width: 0;
}

.solar-calc-wrap .sc-app-name {
    font-size: 12.5px;
    font-weight: 600;
    white-space: normal;
    overflow: visible;
    word-break: break-word;
    color: var(--sc-text);
    margin-bottom: 3px;
}

/* ── Editable watts row (replaces static sc-app-watts) ──────────────────── */
.solar-calc-wrap .sc-app-watts-row {
    display: flex !important;
    align-items: center !important;
    flex-wrap: nowrap !important;
    gap: 3px !important;
}

.solar-calc-wrap .sc-watts-input,
.solar-calc-wrap input.sc-watts-input[type="number"] {
    width: 52px !important;
    min-width: 52px !important;
    max-width: 52px !important;
    flex: 0 0 52px !important;
    height: 22px !important;
    text-align: center !important;
    border: 1px solid var(--sc-border) !important;
    border-radius: 4px !important;
    font-size: 11px !important;
    font-weight: 600 !important;
    color: var(--sc-text) !important;
    background: var(--sc-surface) !important;
    padding: 0 !important;
    margin: 0 !important;
    box-shadow: none !important;
    -moz-appearance: textfield !important;
    appearance: textfield !important;
    display: inline-block !important;
    vertical-align: middle !important;
    line-height: 1 !important;
    box-sizing: border-box !important;
}

.solar-calc-wrap .sc-watts-input::-webkit-outer-spin-button,
.solar-calc-wrap .sc-watts-input::-webkit-inner-spin-button,
.solar-calc-wrap input.sc-watts-input[type="number"]::-webkit-outer-spin-button,
.solar-calc-wrap input.sc-watts-input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none !important;
    margin: 0 !important;
}

.solar-calc-wrap .sc-watts-input:focus,
.solar-calc-wrap input.sc-watts-input[type="number"]:focus {
    outline: none !important;
    border-color: var(--sc-primary) !important;
    box-shadow: 0 0 0 2px rgba(19,119,194,.15) !important;
}

.solar-calc-wrap .sc-watts-unit {
    font-size: 11px !important;
    color: var(--sc-text-muted) !important;
    flex-shrink: 0 !important;
    line-height: 1 !important;
    white-space: nowrap !important;
}

.solar-calc-wrap .sc-app-total-watts {
    font-size: 11px !important;
    font-weight: 700 !important;
    color: var(--sc-primary) !important;
    flex-shrink: 1 !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    line-height: 1 !important;
    min-width: 0 !important;
}

/* ── Qty controls ───────────────────────────────────────────────────────────── */
.solar-calc-wrap .sc-app-qty {
    display: flex;
    align-items: center;
    gap: 3px;
    flex-shrink: 0;
}

.solar-calc-wrap .sc-qty-btn {
    width: 28px;
    height: 28px;
    border: 1px solid var(--sc-border);
    background: var(--sc-surface);
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--sc-transition);
    color: var(--sc-primary);
    padding: 0;
}

.solar-calc-wrap .sc-qty-btn:hover {
    background: var(--sc-primary);
    color: #fff;
    border-color: var(--sc-primary);
}

.solar-calc-wrap .sc-qty-btn:active {
    transform: scale(.9);
}

.solar-calc-wrap .sc-qty-input {
    width: 40px;
    height: 28px;
    text-align: center;
    border: 1px solid var(--sc-border);
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--sc-text);
    background: var(--sc-surface);
    -moz-appearance: textfield;
    appearance: textfield;
    padding: 0;
}

.solar-calc-wrap .sc-qty-input::-webkit-outer-spin-button,
.solar-calc-wrap .sc-qty-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
}

.solar-calc-wrap .sc-qty-input:focus {
    outline: none;
    border-color: var(--sc-primary);
    box-shadow: 0 0 0 3px rgba(19,119,194,.15);
}

/* ── Per-appliance hours row ────────────────────────────────────────────────── */
.solar-calc-wrap .sc-app-hours-row {
    display: flex !important;
    align-items: center !important;
    flex-wrap: nowrap !important;
    gap: 5px !important;
    padding: 5px 12px 9px !important;
    border-top: 1px dashed rgba(19,119,194,.18) !important;
    background: rgba(19,119,194,.04) !important;
}

.solar-calc-wrap .sc-app-hours-label {
    font-size: 11px !important;
    color: var(--sc-text-muted) !important;
    white-space: nowrap !important;
    user-select: none !important;
    flex-shrink: 0 !important;
    line-height: 1 !important;
}

/* Fixed-width input — !important guards against theme `input { width:100% }` */
.solar-calc-wrap .sc-hours-input,
.solar-calc-wrap input.sc-hours-input[type="number"] {
    width: 46px !important;
    min-width: 46px !important;
    max-width: 46px !important;
    flex: 0 0 46px !important;
    height: 24px !important;
    text-align: center !important;
    border: 1px solid var(--sc-border) !important;
    border-radius: 5px !important;
    font-size: 12px !important;
    font-weight: 600 !important;
    color: var(--sc-primary) !important;
    background: var(--sc-surface) !important;
    padding: 0 !important;
    margin: 0 !important;
    box-shadow: none !important;
    -moz-appearance: textfield !important;
    appearance: textfield !important;
    transition: border-color .15s, box-shadow .15s !important;
    display: inline-block !important;
    vertical-align: middle !important;
    line-height: 1 !important;
    box-sizing: border-box !important;
}

.solar-calc-wrap .sc-hours-input::-webkit-outer-spin-button,
.solar-calc-wrap .sc-hours-input::-webkit-inner-spin-button,
.solar-calc-wrap input.sc-hours-input[type="number"]::-webkit-outer-spin-button,
.solar-calc-wrap input.sc-hours-input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none !important;
    margin: 0 !important;
}

.solar-calc-wrap .sc-hours-input:focus,
.solar-calc-wrap input.sc-hours-input[type="number"]:focus {
    outline: none !important;
    border-color: var(--sc-primary) !important;
    box-shadow: 0 0 0 2px rgba(19,119,194,.18) !important;
}

.solar-calc-wrap .sc-app-hours-unit {
    font-size: 11px !important;
    color: var(--sc-text-muted) !important;
    white-space: nowrap !important;
    flex-shrink: 0 !important;
    line-height: 1 !important;
}

/* Dim the hours row when appliance qty is 0 */
.solar-calc-wrap .sc-appliance-card:not(.sc-active) .sc-app-hours-row {
    opacity: .5;
}

/* ── Card copy / delete actions ─────────────────────────────────────────────── */
.solar-calc-wrap .sc-card-actions {
    display: flex;
    gap: 6px;
    justify-content: flex-end;
    padding: 5px 8px 6px;
    border-top: 1px solid var(--sc-border);
    background: var(--sc-surface);
}

.solar-calc-wrap .sc-card-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    font-size: 11px;
    font-weight: 600;
    padding: 3px 9px;
    border-radius: 50px;
    border: 1px solid;
    cursor: pointer;
    background: transparent;
    line-height: 1.4;
    transition: var(--sc-transition);
    white-space: nowrap;
}

.solar-calc-wrap .sc-card-copy {
    color: var(--sc-primary);
    border-color: #bfdbfe;
}

.solar-calc-wrap .sc-card-copy:hover {
    background: var(--sc-primary-light);
    border-color: var(--sc-primary);
}

.solar-calc-wrap .sc-card-delete {
    color: #dc2626;
    border-color: #fecaca;
}

.solar-calc-wrap .sc-card-delete:hover {
    background: #fef2f2;
    border-color: #dc2626;
}

/* ── Variant type selector row ──────────────────────────────────────────────── */
.solar-calc-wrap .sc-app-variant-row {
    display: flex !important;
    align-items: center !important;
    flex-wrap: nowrap !important;
    gap: 6px !important;
    padding: 5px 12px 6px !important;
    border-top: 1px dashed rgba(19,119,194,.18) !important;
    background: rgba(19,119,194,.04) !important;
}

.solar-calc-wrap .sc-variant-label {
    font-size: 11px !important;
    color: var(--sc-text-muted) !important;
    white-space: nowrap !important;
    flex-shrink: 0 !important;
    line-height: 1 !important;
    user-select: none !important;
}

.solar-calc-wrap .sc-variant-select,
.solar-calc-wrap select.sc-variant-select {
    flex: 1 1 auto !important;
    min-width: 0 !important;
    max-width: 100% !important;
    height: 26px !important;
    font-size: 11px !important;
    font-weight: 500 !important;
    color: var(--sc-primary-dark) !important;
    background: var(--sc-surface) !important;
    border: 1px solid var(--sc-border) !important;
    border-radius: 5px !important;
    padding: 0 4px !important;
    margin: 0 !important;
    box-shadow: none !important;
    cursor: pointer !important;
    outline: none !important;
    -webkit-appearance: auto !important;
    appearance: auto !important;
    line-height: 26px !important;
    box-sizing: border-box !important;
}

.solar-calc-wrap .sc-variant-select:focus,
.solar-calc-wrap select.sc-variant-select:focus {
    border-color: var(--sc-primary) !important;
    box-shadow: 0 0 0 2px rgba(19,119,194,.18) !important;
}

/* Dim variant row when appliance qty is 0 */
.solar-calc-wrap .sc-appliance-card:not(.sc-active) .sc-app-variant-row {
    opacity: .5;
}

/* ── Summary bar ────────────────────────────────────────────────────────────── */
.solar-calc-wrap .sc-summary-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    background: linear-gradient(135deg, var(--sc-primary) 0%, #1a8fd1 100%);
    border-radius: var(--sc-radius-sm);
    color: #fff;
    margin-bottom: 24px;
    overflow: hidden;
}

.solar-calc-wrap .sc-summary-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
    min-width: 130px;
    padding: 18px 22px;
    border-right: 1px solid rgba(255,255,255,.15);
}

.solar-calc-wrap .sc-summary-item:last-child {
    border-right: none;
}

.solar-calc-wrap .sc-summary-label {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: .7px;
    opacity: .8;
    font-weight: 600;
}

.solar-calc-wrap .sc-summary-value {
    font-size: 22px;
    font-weight: 700;
    line-height: 1;
}

/* ── Calculate button ───────────────────────────────────────────────────────── */
.solar-calc-wrap .sc-calc-btn-area {
    text-align: center;
}

.solar-calc-wrap .sc-calc-hint {
    font-size: 13px;
    color: var(--sc-text-muted);
    margin: 10px 0 0;
}

/* ── Shared button styles ───────────────────────────────────────────────────── */
.solar-calc-wrap .sc-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 50px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--sc-transition);
    text-decoration: none;
    line-height: 1;
    white-space: nowrap;
}

.solar-calc-wrap .sc-btn-primary {
    background: var(--sc-primary);
    color: #fff;
    border-color: var(--sc-primary);
    box-shadow: 0 4px 14px rgba(19,119,194,.35);
}

.solar-calc-wrap .sc-btn-primary:hover:not(:disabled) {
    background: var(--sc-primary-dark);
    border-color: var(--sc-primary-dark);
    box-shadow: var(--sc-shadow-hover);
    transform: translateY(-1px);
}

.solar-calc-wrap .sc-btn-primary:disabled,
.solar-calc-wrap .sc-btn-primary[aria-disabled="true"] {
    background: #93c3e8;
    border-color: #93c3e8;
    box-shadow: none;
    cursor: not-allowed;
    transform: none;
}

.solar-calc-wrap .sc-btn-outline {
    background: transparent;
    color: var(--sc-primary);
    border-color: var(--sc-primary);
}

.solar-calc-wrap .sc-btn-outline:hover {
    background: var(--sc-primary-xlt);
}

.solar-calc-wrap .sc-btn-accent {
    background: var(--sc-accent);
    color: #fff;
    border-color: var(--sc-accent);
}

.solar-calc-wrap .sc-btn-accent:hover {
    background: #d32f2f;
    border-color: #d32f2f;
    color: #fff;
}

/* ── Loading spinner ────────────────────────────────────────────────────────── */
.solar-calc-wrap .sc-loading {
    text-align: center;
    padding: 48px 24px;
    color: var(--sc-text-muted);
}

.solar-calc-wrap .sc-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--sc-border);
    border-top-color: var(--sc-primary);
    border-radius: 50%;
    animation: sc-spin .8s linear infinite;
    margin: 0 auto 16px;
}

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

/* ── Error ──────────────────────────────────────────────────────────────────── */
.solar-calc-wrap .sc-error-msg {
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: var(--sc-radius-sm);
    color: #dc2626;
    padding: 16px 20px;
    margin-bottom: 20px;
}

/* ── Requirements chips ─────────────────────────────────────────────────────── */
.solar-calc-wrap .sc-requirements-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.solar-calc-wrap .sc-requirements-bar.sc-requirements-bar-hidden {
    display: none;
}

.solar-calc-wrap .sc-req-chip {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 14px;
    background: var(--sc-primary-light);
    color: var(--sc-primary-dark);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
    border: 1px solid rgba(19,119,194,.2);
}

/* ── Product recommendation cards ───────────────────────────────────────────── */
.solar-calc-wrap .sc-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.solar-calc-wrap .sc-cat-card {
    background: var(--sc-surface);
    border: 1px solid var(--sc-border);
    border-radius: var(--sc-radius);
    overflow: hidden;
    box-shadow: var(--sc-shadow);
}

.solar-calc-wrap .sc-cat-header {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 20px;
    background: var(--sc-primary-xlt);
    border-bottom: 1px solid var(--sc-border);
}

.solar-calc-wrap .sc-cat-panels .sc-cat-header   { background: linear-gradient(135deg, #fffde7, #f0f7ff); }
.solar-calc-wrap .sc-cat-inverter .sc-cat-header  { background: linear-gradient(135deg, #e8f0fe, #f0f7ff); }
.solar-calc-wrap .sc-cat-battery .sc-cat-header   { background: linear-gradient(135deg, #fce4ec, #f0f7ff); }

.solar-calc-wrap .sc-cat-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.solar-calc-wrap .sc-cat-header h4 {
    font-size: 15px;
    font-weight: 600;
    margin: 0 0 2px;
    color: var(--sc-text);
}

.solar-calc-wrap .sc-cat-spec {
    font-size: 12px;
    color: var(--sc-text-muted);
}

.solar-calc-wrap .sc-cat-products {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.solar-calc-wrap .sc-cat-empty {
    text-align: center;
    padding: 24px 16px;
    color: var(--sc-text-muted);
    font-size: 13px;
}

/* ── Individual product item ────────────────────────────────────────────────── */
.solar-calc-wrap .sc-prod-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px;
    border: 1px solid var(--sc-border);
    border-radius: var(--sc-radius-sm);
    transition: var(--sc-transition);
    position: relative;
}

.solar-calc-wrap .sc-prod-item:hover {
    border-color: var(--sc-primary);
    background: var(--sc-primary-xlt);
}

.solar-calc-wrap .sc-prod-item.sc-best-match {
    border-color: var(--sc-primary);
    background: var(--sc-primary-xlt);
}

.solar-calc-wrap .sc-best-badge {
    position: absolute;
    top: -1px;
    right: -1px;
    background: var(--sc-primary);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 0 var(--sc-radius-sm) 0 var(--sc-radius-sm);
    text-transform: uppercase;
    letter-spacing: .5px;
}

/* Featured product highlight */
.solar-calc-wrap .sc-prod-item.sc-featured {
    border-color: #f59e0b;
    background: #fffbeb;
}

.solar-calc-wrap .sc-prod-item.sc-featured:hover {
    background: #fef3c7;
}

.solar-calc-wrap .sc-featured-badge {
    position: absolute;
    top: -1px;
    right: -1px;
    background: #f59e0b;
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 0 var(--sc-radius-sm) 0 var(--sc-radius-sm);
    text-transform: uppercase;
    letter-spacing: .5px;
}

/* "Product from: domain" label for external/manual products */
.solar-calc-wrap .sc-prod-source {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    color: var(--sc-text-muted);
    background: var(--sc-surface-2);
    border: 1px solid var(--sc-border);
    border-radius: 4px;
    padding: 2px 7px;
    margin-top: 5px;
    margin-bottom: 2px;
}

.solar-calc-wrap .sc-prod-img-wrap {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    border-radius: var(--sc-radius-sm);
    overflow: hidden;
    background: var(--sc-surface-2);
    border: 1px solid var(--sc-border);
}

.solar-calc-wrap .sc-prod-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.solar-calc-wrap .sc-prod-img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
}

.solar-calc-wrap .sc-prod-info { flex: 1; min-width: 0; }

.solar-calc-wrap .sc-prod-name {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 3px;
    line-height: 1.35;
    color: var(--sc-text);
}

.solar-calc-wrap .sc-prod-meta {
    font-size: 12px;
    color: var(--sc-text-muted);
    margin-bottom: 4px;
}

.solar-calc-wrap .sc-prod-price-row {
    display: flex;
    align-items: baseline;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 6px;
}

.solar-calc-wrap .sc-prod-unit-price {
    font-size: 12px;
    color: var(--sc-text-muted);
}

.solar-calc-wrap .sc-prod-total-price {
    font-size: 15px;
    font-weight: 700;
    color: var(--sc-primary-dark);
}

.solar-calc-wrap .sc-prod-actions {
    display: flex;
    gap: 6px;
    margin-top: 8px;
    flex-wrap: wrap;
}

.solar-calc-wrap .sc-prod-btn {
    font-size: 12px;
    padding: 6px 12px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: 1px solid;
    transition: var(--sc-transition);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    line-height: 1;
}

.solar-calc-wrap .sc-prod-btn-view {
    background: transparent;
    color: var(--sc-primary);
    border-color: var(--sc-primary);
}

.solar-calc-wrap .sc-prod-btn-view:hover {
    background: var(--sc-primary);
    color: #fff;
}

.solar-calc-wrap .sc-prod-btn-cart {
    background: var(--sc-primary);
    color: #fff;
    border-color: var(--sc-primary);
}

.solar-calc-wrap .sc-prod-btn-cart:hover {
    background: var(--sc-primary-dark);
    border-color: var(--sc-primary-dark);
}

.solar-calc-wrap .sc-prod-out-of-stock {
    font-size: 11px;
    color: #dc2626;
    font-weight: 600;
    margin-top: 4px;
}

/* ── Bundle section ─────────────────────────────────────────────────────────── */
.solar-calc-wrap .sc-bundle {
    background: linear-gradient(135deg, #f0f7ff, #fffde7);
    border: 2px solid var(--sc-primary);
    border-radius: var(--sc-radius);
    overflow: hidden;
    margin-top: 8px;
    margin-bottom: 28px;
}

.solar-calc-wrap .sc-bundle-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px 16px;
    background: linear-gradient(135deg, var(--sc-primary) 0%, #1a8fd1 100%);
    color: #fff;
}

.solar-calc-wrap .sc-bundle-header span:first-child { font-size: 32px; flex-shrink: 0; }
.solar-calc-wrap .sc-bundle-header h3 { font-size: 18px; font-weight: 700; margin: 0 0 4px; color: #fff; }
.solar-calc-wrap .sc-bundle-header p  { font-size: 13px; opacity: .85; margin: 0; }

.solar-calc-wrap .sc-bundle-items {
    display: flex;
    flex-wrap: wrap;
    gap: 1px;
    background: var(--sc-border);
    border-bottom: 1px solid var(--sc-border);
}

.solar-calc-wrap .sc-bundle-item {
    flex: 1;
    min-width: 200px;
    background: var(--sc-surface);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.solar-calc-wrap .sc-bundle-item-icon  { font-size: 22px; flex-shrink: 0; }
.solar-calc-wrap .sc-bundle-item-name  { font-size: 13px; font-weight: 600; margin-bottom: 2px; }
.solar-calc-wrap .sc-bundle-item-sub   { font-size: 12px; color: var(--sc-text-muted); }
.solar-calc-wrap .sc-bundle-item-price { margin-left: auto; font-size: 15px; font-weight: 700; color: var(--sc-primary-dark); white-space: nowrap; }

/* Footer: total label · price · buttons — all in one row */
.solar-calc-wrap .sc-bundle-footer {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px 20px;
    padding: 14px 24px 18px;
    background: var(--sc-surface);
    border-top: 2px dashed var(--sc-border);
}

.solar-calc-wrap .sc-bundle-total-info {
    flex: 1;
    min-width: 160px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.solar-calc-wrap .sc-bundle-total-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--sc-text);
}

.solar-calc-wrap .sc-bundle-total-note {
    font-size: 11px;
    color: var(--sc-text-muted);
}

.solar-calc-wrap .sc-bundle-total-price {
    font-size: 24px;
    font-weight: 800;
    color: var(--sc-primary-dark);
    white-space: nowrap;
    flex-shrink: 0;
}

/* Compact button variant used inside the footer */
.solar-calc-wrap .sc-btn-sm {
    padding: 10px 20px;
    font-size: 14px;
}

/* "Products by Category" sub-heading */
.solar-calc-wrap .sc-cards-section-head {
    margin-bottom: 14px;
}

.solar-calc-wrap .sc-cards-section-head h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--sc-text-muted);
    margin: 0;
    padding: 0;
    text-transform: uppercase;
    letter-spacing: .5px;
    font-size: 12px;
}

/* ── Back button ────────────────────────────────────────────────────────────── */
.solar-calc-wrap .sc-back-area {
    text-align: center;
    padding: 8px 0;
}

/* ── Toast ──────────────────────────────────────────────────────────────────── */
.sc-toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--sc-primary, #1377C2);
    color: #fff;
    padding: 14px 20px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 8px 24px rgba(0,0,0,.15);
    z-index: 999999;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: sc-toast-in .3s ease forwards;
    max-width: 340px;
}

@keyframes sc-toast-in {
    from { transform: translateY(20px); opacity: 0; }
    to   { transform: translateY(0);    opacity: 1; }
}

.sc-toast.sc-toast-error { background: #dc2626; }

/* ── Responsive ─────────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
    .solar-calc-wrap .sc-section { padding: 20px 14px 24px; }
    .solar-calc-wrap .sc-title   { font-size: 20px; }

    .solar-calc-wrap .sc-summary-bar { flex-direction: column; gap: 0; }
    .solar-calc-wrap .sc-summary-item { border-right: none; border-bottom: 1px solid rgba(255,255,255,.15); }
    .solar-calc-wrap .sc-summary-item:last-child { border-bottom: none; }

    .solar-calc-wrap .sc-cards-grid    { grid-template-columns: 1fr; }
    .solar-calc-wrap .sc-appliances-grid { grid-template-columns: 1fr; }

    .solar-calc-wrap .sc-btn { width: 100%; justify-content: center; }
    .solar-calc-wrap .sc-bundle-footer { flex-direction: column; align-items: stretch; }
    .solar-calc-wrap .sc-bundle-total-price { font-size: 28px; }
    .solar-calc-wrap .sc-bundle-item { min-width: 100%; }
}