body.merchant {
  --merchant-ink: #172b24;
  --merchant-green: #214f40;
  --merchant-soft: #e8f1ec;
  --merchant-border: #dce5df;
  --merchant-muted: #53665e;
  --merchant-top-height: 65px;
}
body.merchant #mainUI { background: #f5f7f5; color: var(--merchant-ink); min-height: 100dvh; }
.merchant-top { position: sticky; top: 0; z-index: 30; background: #fff; border-bottom: 1px solid var(--merchant-border); }
.merchant-top-inner {
  max-width: 1480px;
  margin-inline: auto;
  min-height: var(--merchant-top-height);
  padding: 8px clamp(12px, 2.4vw, 28px);
  display: flex;
  align-items: center;
  gap: clamp(8px, 1.25vw, 16px);
}
.merchant-top-inner :is(#btnNewStore,#btnAccount,#storeSelect) { min-height: 44px; }
.merchant-top-inner #storeSelect { max-width: 260px; min-width: 0; }
body.merchant[data-tab="builder"] .merchant-top-inner #saveState { visibility: hidden; }

body.merchant #workspace:not([hidden]) {
  display: grid;
  grid-template-columns: minmax(0,1fr);
  grid-template-areas: "content";
  align-items: start;
  gap: 18px;
  max-width: 1480px;
  margin-inline: auto;
  padding: 16px clamp(12px, 2.4vw, 28px) calc(84px + env(safe-area-inset-bottom));
}
#workspace > main { grid-area: content; min-width: 0; }
body[data-tab="products"] #workspace main > [data-panel="products"] { display: block; }
body.merchant #workspace .merchant-nav { grid-area: navigation; display: none; }
body.merchant #workspace .merchant-preview { grid-area: content; display: none; min-width: 0; }
body.merchant[data-tab="preview"] #workspace .merchant-preview { display: block; }
body.merchant[data-tab="preview"] #workspace > main { display: none; }
body.merchant #workspace .pv-frame {
  width: 100%;
  height: clamp(350px, calc(100dvh - 185px), 820px);
  border: 1px solid var(--merchant-border);
  border-radius: 14px;
  box-shadow: none;
}
.merchant-preview-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 2px 10px;
  margin: 0 2px 9px;
}
.merchant-preview-heading h2 { font-weight: 700; }
.merchant-preview-heading span { color: var(--merchant-muted); }
body.merchant #workspace .k-card {
  border: 1px solid var(--merchant-border);
  border-radius: 16px;
  box-shadow: 0 1px 2px #16352a08;
}
body.merchant #workspace .merchant-actions {
  padding: clamp(16px, 2.6vw, 28px);
  background: #fff;
}
#workspace .merchant-actions h1 { font-size: clamp(24px,3vw,34px); line-height: 1.2; }
#workspace #merchantSaveState {
  padding: 4px 9px;
  border-radius: 999px;
  background: #f1f4f2;
  font-size: 12px;
}
#workspace .merchant-action-buttons { display: flex; gap: 8px; }
#workspace .merchant-action-buttons .k-btn { flex: 0 1 auto; min-height: 44px; }
body.merchant :is(.merchant-top,#workspace) .k-primary {
  background: var(--merchant-green);
  color: white;
  box-shadow: none;
}
body.merchant :is(.merchant-top,#workspace) .k-primary:hover { background: #183c30; }
#workspace .merchant-product-filter { width: clamp(95px, 28%, 160px); }
#merchantProducts #prodSearch, #catAdd #catNew { min-width: 0; }

body.merchant #mobileNav {
  position: fixed;
  inset-inline: 0;
  bottom: 0;
  z-index: 30;
  padding: 3px 0 env(safe-area-inset-bottom);
  background: #fff;
  border-top: 1px solid var(--merchant-border);
}
body.merchant #mobileNav > div {
  display: grid;
  grid-template-columns: repeat(7,minmax(44px,1fr));
  overflow-x: auto;
}
body.merchant #mobileNav button {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 3px;
  min-height: 56px;
  padding-inline: 1px;
  font-size: clamp(10px,2.8vw,12px);
  font-weight: 600;
  color: var(--merchant-muted);
}
body.merchant #mobileNav button[aria-current="page"] {
  background: var(--merchant-soft);
  color: var(--merchant-green);
  border-radius: 10px;
}
body.merchant :is(#mobileNav,#workspace .merchant-nav) button:focus-visible {
  outline: 2px solid var(--merchant-green);
  outline-offset: -3px;
}

@media (min-width: 768px) {
  body.merchant #mobileNav { display: none; }
  body.merchant #workspace:not([hidden]) {
    grid-template-columns: 176px minmax(0,1fr);
    grid-template-areas: "navigation content";
    padding-block: 20px 38px;
  }
  body.merchant #workspace:not([hidden]) .merchant-nav {
    display: grid;
    gap: 3px;
    position: sticky;
    top: calc(var(--merchant-top-height) + 20px);
    margin: 0;
    padding: 8px;
    border: 1px solid var(--merchant-border);
    border-radius: 14px;
    background: white;
  }
  body.merchant #workspace .merchant-nav button {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 9px;
    min-height: 44px;
    text-align: start;
    font-size: 14px;
    font-weight: 600;
    color: var(--merchant-muted);
    border-radius: 8px;
  }
  body.merchant #workspace .merchant-nav button svg { width: 18px; height: 18px; flex: none; }
  body.merchant #workspace .merchant-nav button[aria-current="page"] {
    background: var(--merchant-soft);
    color: var(--merchant-green);
    box-shadow: inset -3px 0 var(--merchant-green);
  }
}
@media (min-width: 1200px) {
  body.merchant #workspace:not([hidden]) {
    grid-template-columns: 184px minmax(0,1fr) clamp(285px,26vw,370px);
    grid-template-areas: "navigation content preview";
  }
  body.merchant #workspace .merchant-nav [data-go="preview"] { display: none; }
  body.merchant #workspace .merchant-preview {
    grid-area: preview;
    display: block;
    position: sticky;
    top: calc(var(--merchant-top-height) + 20px);
  }
  body.merchant #workspace .pv-frame { height: clamp(350px, calc(100dvh - 130px), 820px); }
}