/* ============================================================
   MiniSplitsForLess — System Builder CSS
   /pages/build-your-system
   ============================================================ */

:root {
  --sb-gold: #3061E3;
  --sb-dark: #1a1a1a;
  --sb-blue: #192E89;
  --sb-red: #c41e3a;
  --sb-green: #1b5e20;
  --sb-gray: #f5f5f5;
  --sb-border: #e0e0e0;
  --sb-muted: #6b7280;
  --sb-white: #ffffff;
  --sb-radius: 14px;
  --sb-shadow: 0 4px 20px rgba(0,0,0,.09);
  --sb-shadow-hover: 0 8px 32px rgba(0,0,0,.16);
  --sb-font: "Articulat CF", ui-sans-serif, system-ui, -apple-system, sans-serif;
}

/* ── Wrapper ─────────────────────────────────────────── */
#sb-app {
  font-family: var(--sb-font);
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 16px 60px;
  color: var(--sb-dark);
}

/* ── Progress ────────────────────────────────────────── */
.sb-progress {
  display: flex;
  align-items: center;
  gap: 0;
  margin: 28px 0 36px;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 4px 2px;
}
.sb-progress::-webkit-scrollbar { display: none; }

.sb-progress__step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex: 1;
  min-width: 72px;
  position: relative;
  cursor: pointer;
}
.sb-progress__step::after {
  content: "";
  position: absolute;
  top: 17px;
  left: 50%;
  width: 100%;
  height: 2px;
  background: var(--sb-border);
  z-index: 0;
}
.sb-progress__step:last-child::after { display: none; }

.sb-progress__dot {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--sb-white);
  border: 2px solid var(--sb-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--sb-muted);
  position: relative;
  z-index: 1;
  transition: all .2s;
}
.sb-progress__step.active .sb-progress__dot {
  background: var(--sb-gold);
  border-color: var(--sb-gold);
  color: #fff;
  box-shadow: 0 0 0 4px rgba(48,97,227,.2);
}
.sb-progress__step.done .sb-progress__dot {
  background: var(--sb-dark);
  border-color: var(--sb-dark);
  color: #fff;
}
.sb-progress__step.done::after {
  background: var(--sb-dark);
}
.sb-progress__label {
  font-size: 11px;
  font-weight: 600;
  color: var(--sb-muted);
  text-align: center;
  white-space: nowrap;
}
.sb-progress__step.active .sb-progress__label { color: var(--sb-dark); }
.sb-progress__step.done .sb-progress__label { color: var(--sb-dark); }

/* ── Step container ──────────────────────────────────── */
.sb-step { display: none; }
.sb-step.active { display: block; }

.sb-step__header {
  margin: 0 0 24px;
}
.sb-step__title {
  font-size: 26px;
  font-weight: 900;
  margin: 0 0 6px;
  line-height: 1.2;
}
.sb-step__sub {
  color: var(--sb-muted);
  font-size: 15px;
  margin: 0;
}

/* ── Cards grid ──────────────────────────────────────── */
.sb-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px;
  margin-bottom: 16px;
}
.sb-cards--brands {
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}
.sb-cards--zones {
  grid-template-columns: repeat(4, 1fr);
}
.sb-cards--units {
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}

.sb-card {
  border: 2px solid var(--sb-border);
  border-radius: var(--sb-radius);
  padding: 18px;
  background: var(--sb-white);
  cursor: pointer;
  transition: all .2s;
  position: relative;
  box-shadow: var(--sb-shadow);
}
.sb-card:hover {
  border-color: var(--sb-gold);
  box-shadow: var(--sb-shadow-hover);
  transform: translateY(-2px);
}
.sb-card.selected {
  border-color: var(--sb-gold);
  background: #eef2fd;
  box-shadow: 0 0 0 3px rgba(48,97,227,.25);
}
.sb-card__check {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--sb-gold);
  color: #fff;
  font-size: 12px;
  display: none;
  align-items: center;
  justify-content: center;
  font-weight: 900;
}
.sb-card.selected .sb-card__check { display: flex; }

/* Brand card */
.sb-card--brand .sb-brand-logo {
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  border-radius: 8px;
  overflow: hidden;
}
.sb-card--brand .sb-brand-logo img {
  max-height: 48px;
  max-width: 100%;
  object-fit: contain;
}
.sb-card--brand .sb-brand-name {
  font-size: 15px;
  font-weight: 800;
  text-align: center;
  margin-bottom: 6px;
}
.sb-card--brand .sb-brand-tag {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  justify-content: center;
}
.sb-brand-tag span {
  font-size: 11px;
  background: var(--sb-gray);
  border-radius: 999px;
  padding: 2px 8px;
  color: var(--sb-muted);
}

/* Zone card */
.sb-card--zone {
  text-align: center;
  padding: 20px 12px;
}
.sb-zone-diagram {
  display: grid;
  gap: 4px;
  margin: 0 auto 12px;
  width: 60px;
}
.sb-zone-diagram.z1 { grid-template-columns: 1fr; }
.sb-zone-diagram.z2 { grid-template-columns: 1fr 1fr; }
.sb-zone-diagram.z3 { grid-template-columns: 1fr 1fr; }
.sb-zone-diagram.z4 { grid-template-columns: 1fr 1fr; }

.sb-zone-box {
  height: 22px;
  border-radius: 4px;
  background: var(--sb-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  font-weight: 700;
  color: var(--sb-muted);
  transition: background .2s;
}
.sb-card.selected .sb-zone-box {
  background: var(--sb-gold);
  color: #fff;
}
.sb-zone-box.span2 { grid-column: span 2; }

.sb-card--zone h3 {
  font-size: 18px;
  font-weight: 900;
  margin: 0 0 2px;
}
.sb-card--zone p {
  font-size: 12px;
  color: var(--sb-muted);
  margin: 0;
}

/* Unit card */
.sb-card--unit {
  padding: 0;
  overflow: hidden;
}
.sb-card--unit .sb-unit-img {
  width: 100%;
  height: 160px;
  object-fit: contain;
  background: #f9f9f9;
  display: block;
}
.sb-card--unit .sb-unit-body {
  padding: 12px 14px 14px;
}
.sb-card--unit .sb-unit-name {
  font-size: 13px;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.sb-card--unit .sb-unit-price {
  font-size: 16px;
  font-weight: 900;
  color: var(--sb-dark);
}
.sb-card--unit .sb-unit-btu {
  display: inline-block;
  background: var(--sb-gold);
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  border-radius: 6px;
  padding: 2px 7px;
  margin-bottom: 6px;
}
.sb-unit-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 6px;
}
.sb-badge {
  font-size: 10px;
  border-radius: 999px;
  padding: 2px 7px;
  background: var(--sb-gray);
  color: var(--sb-muted);
  white-space: nowrap;
}
.sb-badge--rf {
  background: #e8f5e9;
  color: #2e7d32;
}

/* ── Zone tabs (indoors step) ────────────────────────── */
.sb-zone-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.sb-zone-tab {
  padding: 8px 18px;
  border-radius: 999px;
  border: 2px solid var(--sb-border);
  background: var(--sb-white);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all .15s;
}
.sb-zone-tab:hover { border-color: var(--sb-gold); }
.sb-zone-tab.active {
  background: var(--sb-dark);
  border-color: var(--sb-dark);
  color: #fff;
}
.sb-zone-tab.done {
  border-color: var(--sb-gold);
  background: #eef2fd;
}

/* ── Filter bar ──────────────────────────────────────── */
.sb-filters {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
  align-items: center;
}
.sb-filter-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--sb-muted);
  margin-right: 4px;
}
.sb-filter-btn {
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--sb-border);
  background: var(--sb-white);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all .15s;
  color: var(--sb-dark);
}
.sb-filter-btn:hover { border-color: var(--sb-gold); }
.sb-filter-btn.active {
  background: var(--sb-dark);
  border-color: var(--sb-dark);
  color: #fff;
}

/* ── Kit selector ────────────────────────────────────── */
.sb-kits-grid {
  display: grid;
  gap: 16px;
}
.sb-kit-zone {
  border: 1px solid var(--sb-border);
  border-radius: var(--sb-radius);
  padding: 16px;
  background: var(--sb-white);
}
.sb-kit-zone h4 {
  font-size: 14px;
  font-weight: 800;
  margin: 0 0 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.sb-kit-zone h4 span {
  font-size: 11px;
  font-weight: 600;
  color: var(--sb-muted);
  background: var(--sb-gray);
  padding: 2px 8px;
  border-radius: 999px;
}
.sb-kit-options {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.sb-kit-option {
  padding: 8px 16px;
  border-radius: 10px;
  border: 2px solid var(--sb-border);
  background: var(--sb-white);
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
  transition: all .15s;
  text-align: center;
}
.sb-kit-option:hover { border-color: var(--sb-gold); }
.sb-kit-option.selected {
  border-color: var(--sb-gold);
  background: #eef2fd;
}
.sb-kit-option .kit-price {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--sb-muted);
  margin-top: 2px;
}
.sb-apply-all {
  margin-bottom: 16px;
}
.sb-apply-all label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 14px;
  border: 1px solid var(--sb-border);
  border-radius: 10px;
  background: var(--sb-white);
  width: fit-content;
}
.sb-apply-all input { width: 16px; height: 16px; cursor: pointer; }

/* ── Review ──────────────────────────────────────────── */
.sb-review {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 20px;
  align-items: start;
}
@media (max-width: 768px) {
  .sb-review { grid-template-columns: 1fr; }
}

.sb-review-list {
  border: 1px solid var(--sb-border);
  border-radius: var(--sb-radius);
  background: var(--sb-white);
  overflow: hidden;
}
.sb-review-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--sb-border);
}
.sb-review-item:last-child { border-bottom: none; }
.sb-review-item img {
  width: 60px;
  height: 60px;
  object-fit: contain;
  flex-shrink: 0;
  border-radius: 8px;
  background: var(--sb-gray);
}
.sb-review-item__info { flex: 1; min-width: 0; }
.sb-review-item__label {
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--sb-muted);
  margin-bottom: 2px;
}
.sb-review-item__name {
  font-size: 13px;
  font-weight: 700;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sb-review-item__price {
  font-size: 15px;
  font-weight: 900;
  flex-shrink: 0;
}

.sb-order-card {
  border: 1px solid var(--sb-border);
  border-radius: var(--sb-radius);
  background: var(--sb-white);
  padding: 20px;
  box-shadow: var(--sb-shadow);
  position: sticky;
  top: 80px;
}
.sb-order-card h3 {
  font-size: 17px;
  font-weight: 900;
  margin: 0 0 16px;
}
.sb-order-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0 0;
  border-top: 2px solid var(--sb-border);
  margin-top: 14px;
}
.sb-order-total .label {
  font-size: 15px;
  font-weight: 800;
}
.sb-order-total .amount {
  font-size: 22px;
  font-weight: 900;
  color: var(--sb-dark);
}
.sb-order-line {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--sb-muted);
  margin-bottom: 8px;
}
.sb-order-line.strong {
  font-weight: 700;
  color: var(--sb-dark);
}

/* ── Navigation ──────────────────────────────────────── */
.sb-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--sb-border);
}
.sb-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 800;
  border: none;
  cursor: pointer;
  transition: all .15s;
}
.sb-btn--back {
  background: var(--sb-white);
  border: 2px solid var(--sb-border);
  color: var(--sb-dark);
}
.sb-btn--back:hover {
  border-color: var(--sb-dark);
}
.sb-btn--next {
  background: var(--sb-gold);
  color: #fff;
  box-shadow: 0 4px 16px rgba(48,97,227,.4);
}
.sb-btn--next:hover {
  background: #e09610;
  box-shadow: 0 6px 20px rgba(48,97,227,.5);
  transform: translateY(-1px);
}
.sb-btn--next:disabled {
  background: var(--sb-border);
  color: var(--sb-muted);
  box-shadow: none;
  transform: none;
  cursor: not-allowed;
}
.sb-btn--cart {
  background: var(--sb-dark);
  color: #fff;
  width: 100%;
  justify-content: center;
  padding: 16px 24px;
  font-size: 16px;
  border-radius: var(--sb-radius);
  margin-top: 14px;
  box-shadow: 0 4px 20px rgba(0,0,0,.2);
}
.sb-btn--cart:hover {
  background: #333;
  transform: translateY(-1px);
}
.sb-btn--share {
  background: var(--sb-white);
  border: 1px solid var(--sb-border);
  color: var(--sb-dark);
  font-size: 13px;
  padding: 8px 14px;
  border-radius: 8px;
}

/* ── Loading ─────────────────────────────────────────── */
.sb-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  gap: 16px;
}
.sb-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--sb-border);
  border-top-color: var(--sb-gold);
  border-radius: 50%;
  animation: sb-spin .7s linear infinite;
}
@keyframes sb-spin { to { transform: rotate(360deg); } }
.sb-loading p {
  color: var(--sb-muted);
  font-size: 14px;
  margin: 0;
}

/* ── Empty state ─────────────────────────────────────── */
.sb-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--sb-muted);
}
.sb-empty__icon { font-size: 40px; margin-bottom: 12px; }
.sb-empty p { font-size: 14px; }

/* ── Toast ───────────────────────────────────────────── */
.sb-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--sb-dark);
  color: #fff;
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  z-index: 9999;
  animation: sb-fadein .3s ease;
  box-shadow: 0 8px 24px rgba(0,0,0,.25);
}
.sb-toast.success { background: #2e7d32; }
.sb-toast.error { background: #c41e3a; }
@keyframes sb-fadein {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Share URL box ───────────────────────────────────── */
.sb-share-box {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 12px;
  padding: 10px 14px;
  background: var(--sb-gray);
  border-radius: 10px;
}
.sb-share-box input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 12px;
  color: var(--sb-muted);
  outline: none;
}
.sb-share-box button {
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
  border: none;
  background: var(--sb-dark);
  color: #fff;
  cursor: pointer;
}

/* ── RF card ─────────────────────────────────────────── */
.sb-card--rf {
  text-align: center;
  padding: 24px 16px;
}
.sb-rf-icon {
  font-size: 36px;
  margin-bottom: 8px;
}
.sb-rf-name {
  font-size: 16px;
  font-weight: 900;
  margin-bottom: 4px;
}
.sb-rf-sub {
  font-size: 12px;
  color: var(--sb-muted);
}

/* ── Condenser match banner ──────────────────────────── */
.sb-condenser-banner {
  background: linear-gradient(120deg, #192E89, #122266);
  color: #fff;
  border-radius: var(--sb-radius);
  padding: 16px 20px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.sb-condenser-banner__icon { font-size: 28px; flex-shrink: 0; }
.sb-condenser-banner p { margin: 0; font-size: 14px; opacity: .9; }
.sb-condenser-banner strong { font-size: 16px; display: block; margin-bottom: 2px; }

/* ── Responsive ──────────────────────────────────────── */
@media (max-width: 640px) {
  .sb-cards--zones { grid-template-columns: repeat(2, 1fr); }
  .sb-cards--brands { grid-template-columns: 1fr 1fr; }
  .sb-cards--units { grid-template-columns: 1fr 1fr; }
  .sb-step__title { font-size: 20px; }
  .sb-progress__label { display: none; }
  .sb-progress__step { min-width: 40px; }
}
@media (max-width: 400px) {
  .sb-cards--brands { grid-template-columns: 1fr; }
  .sb-cards--units { grid-template-columns: 1fr; }
}

/* ── JS-rendered class aliases ───────────────────────── */

/* Progress steps (JS uses --active / --done / --pending modifiers) */
.sb-progress__step--active .sb-progress__dot {
  background: var(--sb-gold);
  color: #fff;
  box-shadow: 0 0 0 4px rgba(48,97,227,.2);
}
.sb-progress__step--done .sb-progress__dot {
  background: var(--sb-dark);
  color: #fff;
}
.sb-progress__step--pending .sb-progress__dot {
  background: var(--sb-border);
  color: var(--sb-muted);
}
.sb-progress__step--active .sb-progress__label { color: var(--sb-dark); font-weight: 700; }
.sb-progress__step--done .sb-progress__label { color: var(--sb-dark); }
.sb-progress__step--pending .sb-progress__label { color: var(--sb-muted); }
.sb-progress__step--done { cursor: pointer; }
.sb-progress__step--done:hover .sb-progress__dot { background: var(--sb-gold); }
.sb-progress__dot {
  width: 32px; height: 32px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 900;
  background: var(--sb-border);
  color: var(--sb-muted);
  transition: all .2s;
  flex-shrink: 0;
}
.sb-progress__line {
  display: none; /* connector shown via ::after on parent */
}

/* Step container — JS always renders only current step, no .active needed */
.sb-step { display: block; animation: sb-fadein .25s ease; }
.sb-step__desc { color: var(--sb-muted); font-size: 15px; margin: 0 0 24px; }

/* Header section */
.sb-header {
  background: linear-gradient(135deg, #192E89 0%, #122266 100%);
  color: #fff;
  border-radius: var(--sb-radius);
  padding: 40px 32px;
  margin-bottom: 8px;
  text-align: center;
}
.sb-header__title { font-size: 32px; font-weight: 900; margin: 0 0 10px; color: #fff; }
.sb-header__sub { font-size: 17px; margin: 0 0 20px; opacity: .85; }
.sb-header__badges {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 10px;
}
.sb-header__badges span {
  background: rgba(255,255,255,.12);
  border-radius: 30px;
  padding: 5px 14px;
  font-size: 13px;
  font-weight: 700;
}

/* Brand cards grid */
.sb-brands {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.sb-brand-card {
  border: 2px solid var(--sb-border);
  border-radius: var(--sb-radius);
  padding: 24px 20px;
  background: var(--sb-white);
  cursor: pointer;
  transition: all .2s;
  box-shadow: var(--sb-shadow);
  text-align: center;
  position: relative;
}
.sb-brand-card:hover {
  border-color: var(--sb-gold);
  box-shadow: var(--sb-shadow-hover);
  transform: translateY(-2px);
}
.sb-brand-card--selected {
  border-color: var(--sb-gold);
  background: #eef2fd;
  box-shadow: 0 0 0 3px rgba(48,97,227,.25);
}
.sb-brand-card__logo {
  width: 80px; height: 80px;
  border-radius: 50%;
  margin: 0 auto 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 900; color: #fff;
  letter-spacing: -0.5px;
}
.sb-brand-card__name { font-size: 18px; font-weight: 900; margin-bottom: 6px; }
.sb-brand-card__desc { font-size: 13px; color: var(--sb-muted); line-height: 1.4; }
.sb-brand-card__check {
  margin-top: 10px;
  display: inline-block;
  background: var(--sb-gold);
  color: #fff;
  border-radius: 20px;
  padding: 3px 12px;
  font-size: 12px;
  font-weight: 900;
}

/* Zone cards grid */
.sb-zones {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
  margin-bottom: 24px;
}
.sb-zone-card {
  border: 2px solid var(--sb-border);
  border-radius: var(--sb-radius);
  padding: 20px 16px;
  background: var(--sb-white);
  cursor: pointer;
  transition: all .2s;
  box-shadow: var(--sb-shadow);
  text-align: center;
}
.sb-zone-card:hover {
  border-color: var(--sb-gold);
  box-shadow: var(--sb-shadow-hover);
  transform: translateY(-2px);
}
.sb-zone-card--selected {
  border-color: var(--sb-gold);
  background: #eef2fd;
  box-shadow: 0 0 0 3px rgba(48,97,227,.25);
}
.sb-zone-card__diagram { font-size: 24px; margin-bottom: 10px; line-height: 1.3; }
.sb-zone-card__num { font-size: 17px; font-weight: 900; margin-bottom: 4px; }
.sb-zone-card__rooms { font-size: 12px; color: var(--sb-muted); }
.sb-house-icon { display: inline-block; }
.sb-zone-card__houses { display: flex; justify-content: center; gap: 4px; margin-bottom: 10px; color: var(--sb-blue); }
.sb-zone-card--selected .sb-zone-card__houses { color: var(--sb-gold); }

/* Units grid */
.sb-units-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}
.sb-unit-card {
  border: 2px solid var(--sb-border);
  border-radius: var(--sb-radius);
  background: var(--sb-white);
  cursor: pointer;
  transition: all .2s;
  box-shadow: var(--sb-shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.sb-unit-card:hover {
  border-color: var(--sb-gold);
  box-shadow: var(--sb-shadow-hover);
  transform: translateY(-2px);
}
.sb-unit-card--selected {
  border-color: var(--sb-gold);
  background: #eef2fd;
  box-shadow: 0 0 0 3px rgba(48,97,227,.25);
}
.sb-unit-card__img {
  width: 100%; height: 180px;
  object-fit: contain;
  background: #f8f8f8;
  padding: 12px;
}
.sb-unit-card__img-placeholder {
  width: 100%; height: 120px;
  background: var(--sb-gray);
}
.sb-unit-card__body { padding: 14px; flex: 1; display: flex; flex-direction: column; gap: 4px; }
.sb-unit-card__title { font-size: 14px; font-weight: 700; line-height: 1.3; }
.sb-unit-card__btu { font-size: 13px; color: var(--sb-blue); font-weight: 700; }
.sb-unit-card__price { font-size: 13px; color: var(--sb-muted); }
.sb-unit-card__check {
  margin-top: 8px;
  background: var(--sb-gold);
  color: #fff;
  border-radius: 20px;
  padding: 3px 12px;
  font-size: 12px; font-weight: 900;
  align-self: flex-start;
}
.sb-unit-card__action {
  margin-top: 8px;
  font-size: 12px; font-weight: 700;
  color: var(--sb-blue);
  text-decoration: underline;
  align-self: flex-start;
}

/* Review step */
.sb-review { display: flex; flex-direction: column; gap: 20px; }
.sb-review__summary {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 20px;
  background: var(--sb-gray);
  border-radius: var(--sb-radius);
}
.sb-review__badge {
  color: #fff;
  border-radius: 30px;
  padding: 6px 18px;
  font-size: 14px; font-weight: 900;
  letter-spacing: .3px;
}
.sb-review__meta { font-size: 15px; font-weight: 700; color: var(--sb-dark); }
.sb-review__table {
  width: 100%; border-collapse: collapse;
  border-radius: var(--sb-radius);
  overflow: hidden;
  box-shadow: var(--sb-shadow);
}
.sb-review__table th {
  background: var(--sb-blue);
  color: #fff;
  padding: 12px 16px;
  font-size: 13px;
  text-align: left;
}
.sb-review__table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--sb-border);
  font-size: 14px;
  background: var(--sb-white);
  vertical-align: middle;
}
.sb-review__table td:first-child { display: flex; align-items: center; gap: 12px; }
.sb-review__table img { border-radius: 8px; flex-shrink: 0; object-fit: contain; }
.sb-review__total td {
  font-weight: 900;
  font-size: 16px;
  background: #eef2fd;
  border-top: 2px solid var(--sb-gold);
  border-bottom: none;
}
.sb-review__actions {
  display: flex; gap: 14px; flex-wrap: wrap;
  margin-top: 8px;
}

/* Buttons: primary / secondary / text */
.sb-btn--primary {
  background: var(--sb-gold);
  color: #fff;
  box-shadow: 0 4px 16px rgba(48,97,227,.4);
}
.sb-btn--primary:hover {
  background: #0f1e6b;
  box-shadow: 0 6px 20px rgba(48,97,227,.5);
  transform: translateY(-1px);
}
.sb-btn--primary:disabled {
  background: var(--sb-border);
  color: var(--sb-muted);
  box-shadow: none;
  transform: none;
  cursor: not-allowed;
}
.sb-btn--secondary {
  background: var(--sb-white);
  border: 2px solid var(--sb-border);
  color: var(--sb-dark);
}
.sb-btn--secondary:hover { border-color: var(--sb-dark); }
.sb-btn--text {
  background: none;
  border: none;
  color: var(--sb-muted);
  font-size: 14px;
  padding: 8px 0;
  text-decoration: underline;
  cursor: pointer;
}
.sb-btn--lg { padding: 16px 36px; font-size: 17px; }

/* Toast visibility */
.sb-toast { opacity: 0; pointer-events: none; transition: opacity .3s; }
.sb-toast--visible { opacity: 1; pointer-events: auto; }
.sb-toast--success { background: #2e7d32 !important; }
.sb-toast--error   { background: #c41e3a !important; }
.sb-toast--warn    { background: #e65100 !important; }

/* FAQ section */
.sb-faq {
  margin-top: 60px;
  border-top: 1px solid var(--sb-border);
  padding-top: 40px;
}
.sb-faq__title { font-size: 22px; font-weight: 900; margin-bottom: 20px; }
.sb-faq__list { display: flex; flex-direction: column; gap: 12px; }
.sb-faq__item {
  border: 1px solid var(--sb-border);
  border-radius: 10px;
  overflow: hidden;
}
.sb-faq__item summary {
  padding: 16px 20px;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  list-style: none;
  display: flex; justify-content: space-between; align-items: center;
}
.sb-faq__item summary::-webkit-details-marker { display: none; }
.sb-faq__item summary::after { content: '+'; font-size: 20px; font-weight: 300; }
.sb-faq__item[open] summary::after { content: '−'; }
.sb-faq__item p {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--sb-muted);
  line-height: 1.6;
  margin: 0;
}

/* Spinner */
.sb-loading {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  min-height: 260px; gap: 16px;
}
.sb-spinner {
  width: 44px; height: 44px;
  border: 4px solid var(--sb-border);
  border-top-color: var(--sb-gold);
  border-radius: 50%;
  animation: sb-spin .8s linear infinite;
}
@keyframes sb-spin { to { transform: rotate(360deg); } }
.sb-loading p { color: var(--sb-muted); font-size: 15px; }

/* Responsive overrides */
@media (max-width: 640px) {
  .sb-zones { grid-template-columns: repeat(3, 1fr); }
  .sb-brands { grid-template-columns: 1fr 1fr; }
  .sb-units-grid { grid-template-columns: 1fr 1fr; }
  .sb-header { padding: 28px 20px; }
  .sb-header__title { font-size: 22px; }
  .sb-review__actions { flex-direction: column; }
}
@media (max-width: 420px) {
  .sb-brands { grid-template-columns: 1fr; }
  .sb-units-grid { grid-template-columns: 1fr; }
  .sb-zones { grid-template-columns: repeat(2, 1fr); }
  .sb-zone-card { padding: 14px 10px; }
}

/* ── Assembly Bar ─────────────────────────────────────── */
.sb-assembly {
  background: #eef3ff;
  border: 1.5px solid #bfcef5;
  border-radius: var(--sb-radius);
  padding: 16px 20px;
  margin-bottom: 28px;
}
.sb-asm__label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 13px;
  font-weight: 700;
  color: var(--sb-dark);
}
.sb-asm__brand-dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px; height: 32px;
  border-radius: 50%;
  color: #fff;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: -.3px;
  flex-shrink: 0;
}
.sb-asm__total-btu {
  margin-left: auto;
  background: var(--sb-blue);
  color: #fff;
  border-radius: 20px;
  padding: 3px 12px;
  font-size: 12px;
}
.sb-asm__diagram {
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.sb-asm__diagram::-webkit-scrollbar { display: none; }

.sb-asm__outdoor {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 80px;
  width: 80px;
  padding: 8px;
  border-radius: 10px;
  flex-shrink: 0;
  text-align: center;
  gap: 4px;
}
.sb-asm__outdoor--filled {
  background: #fff;
  border: 2px solid var(--sb-gold);
  box-shadow: 0 0 0 3px rgba(48,97,227,.15);
}
.sb-asm__outdoor--empty {
  background: #e4ebfd;
  border: 2px dashed #9db3ef;
}
.sb-asm__outdoor img { width: 48px; height: 48px; object-fit: contain; }
.sb-asm__outdoor-icon { font-size: 28px; }
.sb-asm__outdoor-label { font-size: 11px; font-weight: 700; color: var(--sb-muted); line-height: 1.2; }
.sb-asm__btu { font-size: 10px; color: var(--sb-blue); font-weight: 700; }

.sb-asm__pipe {
  flex-shrink: 0;
  width: 20px;
  height: 3px;
  background: repeating-linear-gradient(90deg, var(--sb-blue) 0px, var(--sb-blue) 6px, transparent 6px, transparent 10px);
  position: relative;
}
.sb-asm__pipe::after {
  content: '';
  position: absolute;
  right: -6px;
  top: 50%;
  transform: translateY(-50%);
  border: 5px solid transparent;
  border-left-color: var(--sb-blue);
}

.sb-asm__zones-row {
  display: flex;
  gap: 8px;
  flex: 1;
  min-width: 0;
}

.sb-asm__zone {
  flex: 1;
  min-width: 70px;
  border-radius: 10px;
  padding: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-align: center;
  position: relative;
}
.sb-asm__zone::before {
  content: '';
  position: absolute;
  left: -4px;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 2px;
  background: var(--sb-blue);
}
.sb-asm__zone--filled {
  background: #fff;
  border: 2px solid var(--sb-gold);
  box-shadow: 0 2px 10px rgba(48,97,227,.15);
}
.sb-asm__zone--empty {
  background: #e4ebfd;
  border: 2px dashed #9db3ef;
}
.sb-asm__unit {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  width: 100%;
}
.sb-asm__unit img { width: 44px; height: 44px; object-fit: contain; }
.sb-asm__img-ph { width: 44px; height: 44px; background: #c5d2f2; border-radius: 6px; }
.sb-asm__unit-info { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.sb-asm__zone-label { font-size: 10px; font-weight: 900; color: var(--sb-muted); text-transform: uppercase; }
.sb-asm__empty-hint { font-size: 10px; color: var(--sb-muted); }
.sb-asm__kit-badge {
  font-size: 9px; font-weight: 900;
  background: var(--sb-green); color: #fff;
  border-radius: 10px; padding: 1px 6px;
}

/* ── Product card selectable wrapper ─────────────────── */
.sb-card-wrapper {
  cursor: pointer;
  position: relative;
  border-radius: var(--block-border-radius, 16px);
  outline: 2px solid #e0e0e0;
  outline-offset: 0;
  transition: outline-color .15s, transform .15s;
}
.sb-card-wrapper:hover {
  outline-color: var(--sb-gold);
  transform: translateY(-2px);
}
.sb-card-wrapper--selected {
  outline-color: var(--sb-gold) !important;
  outline-width: 3px;
}
.sb-card-wrapper--selected .product-card--add-to-cart-button {
  background: #2e7d32 !important;
}
.sb-selected-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 20;
  background: var(--sb-gold);
  color: #fff;
  font-size: 11px;
  font-weight: 900;
  border-radius: 20px;
  padding: 4px 12px;
  pointer-events: none;
}
/* All children non-interactive — wrapper div handles clicks */
.sb-card-wrapper .product-card-info,
.sb-card-wrapper .product-featured-image-link,
.sb-card-wrapper a,
.sb-card-wrapper button {
  pointer-events: none;
}
.sb-products-grid { margin-bottom: 20px; }

.sb-outdoor-notice {
  background: #fff8e1;
  border: 1px solid #ffcc02;
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 14px;
  color: #5a4000;
  margin-bottom: 16px;
}

/* ── Freon step ──────────────────────────────────────── */
.sb-freons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}
.sb-freon-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  border: 2px solid var(--sb-border);
  border-radius: var(--sb-radius);
  padding: 18px 20px;
  background: var(--sb-white);
  cursor: pointer;
  transition: all .2s;
  box-shadow: var(--sb-shadow);
  text-align: left;
  position: relative;
  width: 100%;
}
.sb-freon-card:hover {
  border-color: var(--sb-gold);
  box-shadow: var(--sb-shadow-hover);
}
.sb-freon-card--selected {
  border-color: var(--sb-gold);
  background: #eef2fd;
  box-shadow: 0 0 0 3px rgba(48,97,227,.2);
}
.sb-freon-card__icon { width: 48px; height: 48px; object-fit: contain; flex-shrink: 0; }
.sb-freon-card__icon--none { display:flex; align-items:center; justify-content:center; font-size:28px; }
.sb-freon-card__body { flex: 1; }
.sb-freon-card__label { font-size: 17px; font-weight: 900; margin-bottom: 2px; }
.sb-freon-card__sub { font-size: 13px; font-weight: 700; color: var(--sb-muted); margin-bottom: 4px; }
.sb-freon-card__desc { font-size: 13px; color: var(--sb-muted); line-height: 1.5; }
.sb-freon-card__check {
  position: absolute; top: 12px; right: 14px;
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--sb-gold); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 900;
}

/* CTA row at bottom of card */
.sb-select-cta {
  display: block;
  margin-top: 12px;
  padding: 10px 0;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  background: var(--sb-blue);
  border-radius: 6px;
  text-align: center;
  letter-spacing: .01em;
}
.sb-select-cta--active {
  background: #2e7d32;
}

/* Save badge next to price */
.sb-price-save {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: #c41e3a;
  margin-top: 2px;
}

/* Brand vendor centered */
.sb-card-wrapper .product-card-vendor {
  text-align: center;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--sb-muted);
  margin-bottom: 4px;
}

/* ── Review grid ─────────────────────────────────────── */
.sb-review-grid {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 24px;
  margin-bottom: 24px;
}
.sb-review-items { display: flex; flex-direction: column; gap: 12px; }
.sb-review-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  background: #fff;
  border: 1px solid var(--sb-border);
  border-radius: 12px;
}
.sb-review-item img { width: 64px; height: 64px; object-fit: contain; border-radius: 8px; flex-shrink: 0; }
.sb-review-item__img-ph { width: 64px; height: 64px; background: var(--sb-gray); border-radius: 8px; flex-shrink: 0; }
.sb-review-item__info { flex: 1; min-width: 0; }
.sb-review-item__title { font-size: 14px; font-weight: 700; line-height: 1.3; margin-bottom: 4px; }
.sb-review-item__meta { font-size: 12px; color: var(--sb-muted); }
.sb-review-item__price { font-size: 15px; font-weight: 900; color: var(--sb-dark); flex-shrink: 0; }

.sb-review-summary__inner {
  background: var(--sb-blue);
  color: #fff;
  border-radius: var(--sb-radius);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: sticky;
  top: 20px;
}
.sb-review-summary__brand {
  border-radius: 30px;
  padding: 6px 16px;
  font-size: 14px; font-weight: 900;
  text-align: center;
  letter-spacing: .3px;
}
.sb-review-summary__meta { font-size: 14px; opacity: .8; text-align: center; }
.sb-review-summary__btu { font-size: 15px; font-weight: 700; text-align: center; }
.sb-review-summary__divider { height: 1px; background: rgba(255,255,255,.2); margin: 8px 0; }
.sb-review-summary__total-label { font-size: 12px; opacity: .7; text-align: center; text-transform: uppercase; letter-spacing: .05em; }
.sb-review-summary__total { font-size: 28px; font-weight: 900; text-align: center; margin-bottom: 8px; }
.sb-btn--full { width: 100%; justify-content: center; }

@media (max-width: 768px) {
  .sb-review-grid { grid-template-columns: 1fr; }
  .sb-review-summary__inner { position: static; }
  .sb-asm__zones-row { flex-wrap: nowrap; overflow-x: auto; }
}

/* ── Accessories Step ────────────────────────────────── */
.sb-acc-section {
  margin-bottom: 40px;
}
.sb-acc-section__header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 18px;
}
.sb-acc-section__title {
  font-size: 20px;
  font-weight: 900;
  margin: 0;
}
.sb-acc-optional {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  background: var(--sb-gray);
  color: var(--sb-muted);
  border-radius: 20px;
  padding: 2px 10px;
  margin-left: 8px;
  vertical-align: middle;
}

/* Mode toggle (All / Per-zone) */
.sb-acc-toggle {
  display: flex;
  gap: 0;
  border: 2px solid var(--sb-border);
  border-radius: 8px;
  overflow: hidden;
  margin-left: auto;
}
.sb-acc-toggle__btn {
  background: none;
  border: none;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--sb-muted);
  cursor: pointer;
  transition: background .15s, color .15s;
  line-height: 1;
}
.sb-acc-toggle__btn--active {
  background: var(--sb-blue);
  color: #fff;
}

/* Per-zone kit rows */
.sb-zone-kits {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--sb-border);
}
.sb-zone-kits:first-of-type { border-top: 1px solid var(--sb-border); }
.sb-zone-kits__label {
  font-size: 13px;
  font-weight: 900;
  color: var(--sb-blue);
  min-width: 60px;
  padding-top: 8px;
  flex-shrink: 0;
}
.sb-zone-kits__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.sb-kit-chip {
  display: inline-block;
  padding: 7px 14px;
  border: 2px solid var(--sb-border);
  border-radius: 8px;
  background: #fff;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all .15s;
  line-height: 1.3;
  text-align: left;
  color: var(--sb-dark);
}
.sb-kit-chip:hover {
  border-color: var(--sb-blue);
}
.sb-kit-chip--active {
  border-color: var(--sb-blue);
  background: #eef2fd;
  color: var(--sb-blue);
}
.sb-kit-chip--skip {
  border-style: dashed;
  color: var(--sb-muted);
}
.sb-kit-chip--skip.sb-kit-chip--active {
  background: #f5f5f5;
  color: var(--sb-dark);
  border-color: var(--sb-muted);
}

.sb-acc-empty {
  color: var(--sb-muted);
  font-size: 14px;
  padding: 16px 0;
}

@media (max-width: 640px) {
  .sb-acc-section__header { flex-direction: column; align-items: flex-start; }
  .sb-acc-toggle { margin-left: 0; }
  .sb-zone-kits { flex-direction: column; gap: 8px; }
}

/* ── Price display on cards ──────────────────────────── */
.sb-card-wrapper .price {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px;
}
.sb-card-wrapper .price-item--regular {
  text-decoration: line-through;
  color: var(--sb-muted);
  font-size: 13px;
  font-weight: 400;
}
.sb-card-wrapper .price-item--sale {
  color: #c41e3a;
  font-size: 16px;
  font-weight: 900;
}
/* Full-price (no strikethrough) — neutral color */
.sb-card-wrapper .price:not(:has(.price-item--regular)) .price-item--sale {
  color: var(--sb-dark);
}
.sb-price-save {
  display: block;
  width: 100%;
  font-size: 12px;
  font-weight: 700;
  color: #c41e3a;
  margin-top: 1px;
}

/* ── BULK Savings Bar (light / inverted) ─────────────── */
.sb-bulk {
  background: #fff;
  border: 1.5px solid #bfcef5;
  border-radius: var(--sb-radius);
  padding: 18px 24px 16px;
  margin-bottom: 20px;
  box-shadow: 0 2px 12px rgba(48,97,227,.08);
}
.sb-bulk__header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.sb-bulk__icon { font-size: 20px; flex-shrink: 0; }
.sb-bulk__headline {
  flex: 1;
  font-size: 14px;
  font-weight: 600;
  color: #0d1a6e;
  line-height: 1.4;
}
.sb-bulk__headline strong { font-weight: 900; color: #192E89; }
.sb-bulk__subtotal {
  background: #e6ecfb;
  color: #192E89;
  border-radius: 20px;
  padding: 3px 12px;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
  white-space: nowrap;
}

/* Track */
.sb-bulk__track-wrap {
  padding: 20px 0 22px;
}
.sb-bulk__track {
  position: relative;
  height: 8px;
  background: #e4ebfd;
  border-radius: 999px;
  overflow: visible;
}
.sb-bulk__fill {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  background: linear-gradient(90deg, #4a6ed4, #192E89);
  border-radius: 999px;
  transition: width .6s ease;
  min-width: 4px;
}

/* Milestone dots */
.sb-bulk__dot {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.sb-bulk__dot-pip {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: #c5d2f2;
  border: 2px solid #9db3ef;
  transition: all .3s;
}
.sb-bulk__dot--reached .sb-bulk__dot-pip {
  background: #192E89;
  border-color: #192E89;
  box-shadow: 0 0 0 4px rgba(48,97,227,.2);
}
.sb-bulk__dot-top {
  position: absolute;
  bottom: calc(100% + 6px);
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
  color: #6680c0;
}
.sb-bulk__dot--reached .sb-bulk__dot-top { color: #0d1a6e; }
.sb-bulk__dot-bot {
  position: absolute;
  top: calc(100% + 6px);
  font-size: 11px;
  font-weight: 900;
  white-space: nowrap;
  color: #6680c0;
}
.sb-bulk__dot--reached .sb-bulk__dot-bot { color: #192E89; }

/* Note / disclaimer */
.sb-bulk__note {
  font-size: 12px;
  color: var(--sb-muted);
  margin-top: 4px;
  line-height: 1.5;
}
.sb-bulk__note strong { color: #0d1a6e; }
.sb-bulk__note--warn {
  color: #b45309;
}

@media (max-width: 640px) {
  .sb-bulk { padding: 14px 16px 12px; }
  .sb-bulk__headline { font-size: 13px; }
  .sb-bulk__dot-top, .sb-bulk__dot-bot { font-size: 10px; }
}

/* ── Equal-height product cards ──────────────────────── */
.sb-products-grid .columns {
  display: flex;
  flex-direction: column;
}
.sb-products-grid .sb-card-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
}
.sb-products-grid .sb-card-wrapper .product-card {
  flex: 1;
  display: flex;
  flex-direction: column;
}
.sb-products-grid .sb-card-wrapper .product-card-info {
  flex: 1;
  display: flex;
  flex-direction: column;
}
.sb-products-grid .sb-card-wrapper .sb-select-cta {
  margin-top: auto;
}

/* Bracket cards — centered price, button/qty pinned to bottom */
.sb-products-grid .sb-card-wrapper[data-type="bracket"] .product-card-vendor {
  text-align: center;
}
.sb-products-grid .sb-card-wrapper[data-type="bracket"] .product-card-title {
  text-align: center;
  display: block;
}
.sb-products-grid .sb-card-wrapper[data-type="bracket"] .price {
  justify-content: center;
  text-align: center;
}
.sb-products-grid .sb-card-wrapper[data-type="bracket"] .free-shipping-note {
  text-align: center;
}
.sb-products-grid .sb-card-wrapper[data-type="bracket"] .product-specs-table {
  text-align: center;
}
.sb-products-grid .sb-card-wrapper[data-type="bracket"] .sb-select-cta,
.sb-products-grid .sb-card-wrapper[data-type="bracket"] .sb-bracket-qty {
  margin-top: auto;
}

/* ── Kit card (variant selector) ─────────────────────── */
.sb-kits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  align-items: stretch;
  margin-bottom: 16px;
}

.sb-kit-card {
  border: 2px solid #e0e0e0;
  border-radius: var(--sb-radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  background: #fff;
  transition: border-color .15s, box-shadow .15s;
}
.sb-kit-card:hover { border-color: var(--sb-blue); }
.sb-kit-card--applied {
  border-color: var(--sb-blue);
  box-shadow: 0 0 0 3px rgba(48,97,227,.2);
}
.sb-kit-card__img {
  position: relative;
  background: #f8f8f8;
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.sb-kit-card__img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 12px;
}
.sb-kit-card__body {
  padding: 14px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.sb-kit-card__title {
  font-size: 13px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--sb-dark);
}
.sb-kit-card__price {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 5px;
}
.sb-kit-card__price .price-item--regular {
  text-decoration: line-through;
  color: var(--sb-muted);
  font-size: 12px;
}
.sb-kit-card__price .price-item--sale {
  font-size: 15px;
  font-weight: 900;
  color: var(--sb-dark);
}
.sb-kit-card__price .sb-price-save {
  width: 100%;
  font-size: 11px;
  color: #c41e3a;
  font-weight: 700;
  margin-top: 0;
}

/* Variant chips inside kit card */
.sb-kit-card__variants { display: flex; flex-direction: column; gap: 6px; }
.sb-kit-card__variants-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--sb-muted);
  text-transform: uppercase;
  letter-spacing: .05em;
}
.sb-kit-card__variant-chips { display: flex; flex-direction: column; gap: 5px; }
.sb-variant-chip {
  display: block;
  width: 100%;
  padding: 7px 10px;
  border: 1.5px solid #e0e0e0;
  border-radius: 8px;
  background: #fff;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  color: var(--sb-dark);
  transition: all .15s;
}
.sb-variant-chip:hover { border-color: var(--sb-blue); color: var(--sb-blue); }
.sb-variant-chip--active {
  border-color: var(--sb-blue);
  background: #eef2fd;
  color: var(--sb-blue);
  font-weight: 700;
}

/* Apply button */
.sb-kit-card__apply {
  margin-top: auto;
  display: block;
  width: 100%;
  padding: 11px 0;
  background: var(--sb-blue);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  text-align: center;
  transition: background .15s;
}
.sb-kit-card__apply:hover { background: #0f1e6b; }
.sb-acc-hint {
  font-size: 13px;
  color: var(--sb-muted);
  margin: 0 0 14px;
  padding: 8px 14px;
  background: #eef2fd;
  border-left: 3px solid var(--sb-blue);
  border-radius: 0 6px 6px 0;
}
.sb-acc-hint strong { color: var(--sb-blue); }
.sb-kit-zones-badge {
  display: inline-block;
  margin-left: 6px;
  padding: 2px 8px;
  background: #eef2fd;
  border: 1px solid #bfcef5;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 700;
  color: var(--sb-blue);
  white-space: nowrap;
}
.sb-kit-card__apply--done {
  background: #2e7d32;
}
.sb-kit-card__apply--done:hover { background: #1b5e20; }

/* ── Per-zone kit rows (redesigned) ─────────────────── */
.sb-pz-kits { display: flex; flex-direction: column; gap: 0; margin-bottom: 16px; }

.sb-pz-row {
  border: 1.5px solid var(--sb-border);
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 8px;
  background: #fff;
  transition: border-color .15s;
}
.sb-pz-row--done {
  border-color: var(--sb-blue);
  background: #f9f5ff;
}
.sb-pz-row--skip { opacity: .6; }

.sb-pz-row__head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.sb-pz-row__head:last-child { margin-bottom: 0; }

.sb-pz-row__label {
  font-size: 13px;
  font-weight: 900;
  color: var(--sb-blue);
  min-width: 58px;
  flex-shrink: 0;
}
.sb-pz-row__summary {
  flex: 1;
  font-size: 13px;
  font-weight: 600;
  color: var(--sb-dark);
}
.sb-pz-row__hint {
  flex: 1;
  font-size: 12px;
  color: var(--sb-muted);
  font-style: italic;
}
.sb-pz-row__skip-note {
  flex: 1;
  font-size: 12px;
  color: var(--sb-muted);
}
.sb-pz-row__clear {
  background: none;
  border: none;
  font-size: 12px;
  color: var(--sb-muted);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
  flex-shrink: 0;
}
.sb-pz-row__clear:hover { color: #c41e3a; }
.sb-pz-row__clear:empty { display: none; }

/* Kit product chips within a zone row */
.sb-pz-row__kits {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

/* Length variant chips within a zone row */
.sb-pz-row__variants {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding-top: 6px;
  border-top: 1px dashed var(--sb-border);
}
.sb-pz-row__vlabel {
  font-size: 11px;
  font-weight: 700;
  color: var(--sb-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
  flex-shrink: 0;
}

/* Smaller variant chips inside zone rows */
.sb-pz-row__variants .sb-variant-chip {
  padding: 5px 10px;
  font-size: 12px;
  width: auto;
}

/* ── Bracket quantity control ────────────────────────── */
.sb-bracket-qty {
  margin-top: 0;
  padding: 10px 12px 12px;
  background: #eef2fd;
  border: 1.5px solid #bfcef5;
  border-top: none;
  border-radius: 0 0 12px 12px;
}
.sb-bracket-qty__label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  color: var(--sb-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-bottom: 6px;
}
.sb-bracket-qty__controls {
  display: flex;
  align-items: center;
  border: 2px solid var(--sb-blue);
  border-radius: 8px;
  overflow: hidden;
  width: 100%;
}
.sb-bracket-qty__btn {
  background: var(--sb-blue);
  color: #fff;
  border: none;
  width: 44px;
  height: 40px;
  font-size: 20px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background .15s;
  position: relative;
  z-index: 2;
}
.sb-bracket-qty__btn:hover { background: #0f1e6b; }
.sb-bracket-qty__val {
  flex: 1;
  text-align: center;
  font-size: 17px;
  font-weight: 900;
  color: var(--sb-blue);
  padding: 0 8px;
  user-select: none;
}

@media (max-width: 640px) {
  .sb-pz-row__kits { flex-direction: column; }
  .sb-pz-row .sb-kit-chip { width: 100%; }
}

/* ── Savings Boost Widget ────────────────────────────── */
.sb-boost {
  background: linear-gradient(135deg, #f4f7fe 0%, #fff 100%);
  border: 2px solid #bfcef5;
  border-radius: 14px;
  padding: 20px 24px;
  margin-bottom: 24px;
}
.sb-boost__header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 16px;
}
.sb-boost__icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  background: var(--sb-blue);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}
.sb-boost__icon svg { display: block; }
.sb-boost__title {
  font-size: 18px;
  font-weight: 800;
  color: var(--sb-blue);
  line-height: 1.25;
  margin-bottom: 6px;
}
.sb-boost__sub {
  font-size: 13px;
  color: var(--sb-dark);
  line-height: 1.55;
}
.sb-boost__recs-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--sb-blue);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.sb-boost__cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin-bottom: 14px;
}
.sb-boost__card {
  background: #fff;
  border: 1.5px solid var(--sb-border);
  border-radius: 10px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color .15s, box-shadow .15s;
}
.sb-boost__card:hover { border-color: var(--sb-blue); box-shadow: 0 2px 12px rgba(48,97,227,.12); }
.sb-boost__card-img {
  width: 100%;
  height: 100px;
  object-fit: contain;
  border-radius: 6px;
  background: #f5f5f5;
}
.sb-boost__card-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--sb-dark);
  line-height: 1.4;
}
.sb-boost__card-btu {
  font-size: 11px;
  color: var(--sb-muted);
}
.sb-boost__card-price {
  font-size: 15px;
  font-weight: 800;
  color: var(--sb-blue);
}
.sb-boost__add {
  margin-top: auto;
  display: block;
  width: 100%;
  padding: 9px 0;
  background: var(--sb-blue);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: background .15s;
}
.sb-boost__add:hover { background: #0f1e6b; }
.sb-boost__note {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--sb-muted);
  margin: 0;
  padding-top: 4px;
  border-top: 1px solid #e8d5f7;
}
.sb-boost__note-icon { flex-shrink: 0; color: var(--sb-blue); }
@media (max-width: 640px) {
  .sb-boost { padding: 16px; }
  .sb-boost__icon { width: 40px; height: 40px; }
  .sb-boost__title { font-size: 15px; }
}

/* ── Filter Bar ──────────────────────────────────────────── */
.sb-filters {
  margin-bottom: 16px;
}
.sb-filters__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
}
.sb-filters__group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}
.sb-filters__label {
  font-size: 12px;
  font-weight: 700;
  color: var(--sb-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-right: 2px;
  white-space: nowrap;
}
.sb-filter__chip {
  padding: 5px 13px;
  border: 1.5px solid var(--sb-border);
  border-radius: 20px;
  background: #fff;
  font-size: 12px;
  font-weight: 600;
  color: var(--sb-dark);
  cursor: pointer;
  transition: all .15s;
  line-height: 1.4;
}
.sb-filter__chip:hover {
  border-color: var(--sb-blue);
}
.sb-filter__chip--active {
  background: var(--sb-blue);
  border-color: var(--sb-blue);
  color: #fff;
}
.sb-filter__clear {
  padding: 5px 12px;
  border: none;
  background: none;
  font-size: 12px;
  color: var(--sb-muted);
  cursor: pointer;
  text-decoration: underline;
  transition: color .15s;
}
.sb-filter__clear:hover { color: var(--sb-dark); }
.sb-filters__empty {
  padding: 20px;
  text-align: center;
  color: var(--sb-muted);
  font-size: 14px;
  background: #fafafa;
  border-radius: 10px;
  margin-bottom: 16px;
}
/* ── Same-kit zone rows (after kit applied) ──────────────── */
.sb-skz-rows { display: flex; flex-direction: column; gap: 8px; margin-bottom: 12px; }
.sb-skz-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: #eef2fd;
  border: 1.5px solid #bfcef5;
  border-radius: 10px;
}
.sb-skz-row__label {
  font-size: 12px;
  font-weight: 700;
  color: var(--sb-blue);
  min-width: 48px;
  text-transform: uppercase;
  letter-spacing: .03em;
}
.sb-skz-row__img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  border-radius: 6px;
  background: #fff;
  flex-shrink: 0;
}
.sb-skz-row__name {
  flex: 1;
  font-size: 12px;
  color: var(--sb-dark);
  line-height: 1.3;
}
.sb-skz-row__variant {
  font-size: 12px;
  font-weight: 700;
  color: var(--sb-blue);
  background: #fff;
  border: 1px solid #bfcef5;
  border-radius: 6px;
  padding: 2px 8px;
}
.sb-skz-row__check {
  color: #2e7d32;
  font-weight: 900;
  font-size: 16px;
}

/* ── Assembly bar kit mini selector ─────────────────────── */
.sb-asm__kit-mini {
  margin-top: 4px;
  font-size: 10px;
}
.sb-asm__kit-mini--done {
  display: flex;
  align-items: center;
  gap: 4px;
  background: #edf7ed;
  border: 1px solid #a5d6a7;
  border-radius: 6px;
  padding: 2px 5px;
  color: #2e7d32;
  font-weight: 600;
}
.sb-asm__kit-mini--done img { width: 18px; height: 18px; object-fit: contain; border-radius: 3px; }
.sb-asm__kit-mini-clear {
  background: none;
  border: none;
  color: #888;
  cursor: pointer;
  font-size: 12px;
  padding: 0 2px;
  line-height: 1;
}
.sb-asm__kit-mini--skip {
  color: var(--sb-muted);
  font-style: italic;
}
.sb-asm__kit-mini--pick { display: flex; flex-direction: column; gap: 3px; }
.sb-asm__kit-mini-label { color: var(--sb-muted); font-size: 10px; }
.sb-asm__kit-mini-chips { display: flex; flex-wrap: wrap; gap: 3px; }
.sb-asm__kit-chip {
  padding: 2px 6px;
  border: 1px solid var(--sb-border);
  border-radius: 4px;
  background: #fff;
  font-size: 10px;
  font-weight: 600;
  cursor: pointer;
  color: var(--sb-dark);
  transition: all .12s;
}
.sb-asm__kit-chip:hover { border-color: var(--sb-blue); color: var(--sb-blue); }
.sb-asm__kit-chip--skip { color: var(--sb-muted); border-style: dashed; }

.sb-filters__empty .sb-filter__clear {
  margin-left: 6px;
  font-size: 14px;
}