/* ==========================================================================
   Toreno Kitchen Planner — IKEA-style configurator
   Vanilla CSS, no preprocessor.
   ========================================================================== */

:root {
  /* Toreno-aligned palette */
  --primary:        #1F3B5C;
  --primary-dark:   #142A44;
  --primary-soft:   #EAF0F7;
  --accent:         #4FA8B0;
  --accent-dark:    #357A82;
  --accent-soft:    #E3F2F4;
  --cta:            #E8861C;
  --cta-dark:       #C66E0B;
  --bg:             #FFFFFF;
  --surface:        #F6F8FB;
  --surface-2:      #EDF1F6;
  --border:         #DCE3EB;
  --border-strong:  #BCC6D2;
  --ink:            #1A2333;
  --ink-2:          #3D4759;
  --muted:          #6B7280;
  --muted-2:        #94A1AE;
  --success:        #1F9D55;
  --warning:        #C66E0B;
  --danger:         #C0392B;
  --shadow-sm:      0 1px 2px rgba(20, 30, 50, 0.06);
  --shadow-md:      0 4px 12px rgba(20, 30, 50, 0.08);
  --shadow-lg:      0 12px 32px rgba(20, 30, 50, 0.14);
  --radius-sm:      4px;
  --radius:         8px;
  --radius-lg:      14px;
  --tab-height:     56px;
  --sidebar-w:      280px;
  --summary-w:      320px;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 14px;
  line-height: 1.45;
  color: var(--ink);
  background: var(--bg);
  overflow: hidden;
}
button { font-family: inherit; cursor: pointer; border: 0; background: none; padding: 0; color: inherit; }
input, textarea, select { font-family: inherit; font-size: inherit; color: inherit; }
img { display: block; max-width: 100%; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; line-height: 1.2; }

.app {
  display: grid;
  grid-template-rows: var(--tab-height) 1fr;
  height: 100vh;
  width: 100vw;
}

/* ====== Top bar ====== */
.topbar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 0 16px;
  z-index: 20;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-right: 24px;
  border-right: 1px solid var(--border);
  margin-right: 16px;
  height: 100%;
}
.brand__logo {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: var(--primary);
  display: grid; place-items: center;
  color: #fff;
  font-weight: 700;
  font-size: 16px;
}
.brand__name {
  font-weight: 700;
  font-size: 15px;
  color: var(--primary);
  letter-spacing: 0.2px;
  line-height: 1.1;
}
.brand__name span {
  display: block;
  font-weight: 500;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-top: 2px;
}

.tabs {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 4px;
}
.tab {
  position: relative;
  padding: 0 18px;
  height: 100%;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  font-size: 14px;
  color: var(--muted);
  border-bottom: 3px solid transparent;
  transition: color 0.15s ease;
  white-space: nowrap;
}
.tab:hover { color: var(--ink); }
.tab.is-active {
  color: var(--primary);
  border-bottom-color: var(--accent);
  font-weight: 600;
}
.tab[disabled] { color: var(--muted-2); cursor: not-allowed; }
.tab[disabled]:hover { color: var(--muted-2); }
.tab__num {
  display: inline-grid;
  place-items: center;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--surface-2);
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
}
.tab.is-active .tab__num { background: var(--accent); color: #fff; }
.tab.is-done .tab__num { background: var(--success); color: #fff; }

.topbar__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.summary-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}
.summary-pill__label {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.summary-pill__value {
  font-weight: 700;
  color: var(--primary);
  font-size: 15px;
}

/* ====== Workspace ====== */
.workspace {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr var(--summary-w);
  height: 100%;
  min-height: 0;
}
.tools {
  background: #fff;
  border-right: 1px solid var(--border);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.tools__head {
  padding: 18px 20px 12px;
  border-bottom: 1px solid var(--border);
}
.tools__title { font-size: 15px; font-weight: 600; }
.tools__hint { margin-top: 4px; font-size: 12px; color: var(--muted); }

.tool-group { padding: 16px 16px 4px; }
.tool-group__title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.6px;
  color: var(--muted);
  text-transform: uppercase;
  margin: 0 0 10px 4px;
}
.tool-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  background: transparent;
  text-align: left;
  font-size: 13px;
  color: var(--ink);
  margin-bottom: 6px;
  transition: background 0.12s ease, border-color 0.12s ease;
}
.tool-btn:hover { background: var(--surface); }
.tool-btn.is-active {
  background: var(--primary-soft);
  border-color: var(--accent);
  color: var(--primary);
  font-weight: 600;
}
.tool-btn__icon { width: 24px; height: 24px; display: grid; place-items: center; color: var(--primary); flex-shrink: 0; }
.tool-btn__icon svg { width: 22px; height: 22px; }
.tool-btn__label { flex: 1; }
.tool-btn__sub { font-size: 11px; color: var(--muted); margin-top: 1px; }

/* Shape grid — auto-fills 2-3 columns based on sidebar width (no overflow) */
.shapes {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(88px, 1fr));
  gap: 10px;
  padding: 14px 16px 20px;
}
.shapes__group-title {
  grid-column: 1 / -1;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.6px;
  color: var(--muted);
  text-transform: uppercase;
  margin: 8px 0 0;
}
.shapes__group-title:first-child { margin-top: 0; }
.shape-card {
  background: #fff;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 8px;
  cursor: pointer;
  transition: border-color 0.12s ease, transform 0.12s ease, background 0.12s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.shape-card:hover { border-color: var(--accent); transform: translateY(-1px); }
.shape-card.is-active { border-color: var(--accent); background: var(--accent-soft); }
.shape-card svg { width: 100%; height: auto; max-height: 80px; }
.shape-card__label { font-size: 12px; color: var(--ink); text-align: center; font-weight: 500; }

/* Dim fields */
.dim-fields { padding: 14px 20px; border-top: 1px solid var(--border); }
.dim-field {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.dim-field label { font-size: 12px; color: var(--muted); font-weight: 500; }
.dim-input {
  position: relative;
  width: 110px;
}
.dim-input input {
  width: 100%;
  padding: 7px 32px 7px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  font-size: 13px;
  text-align: right;
}
.dim-input input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.dim-input__unit {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 11px;
  color: var(--muted);
  pointer-events: none;
}

/* ====== Canvas area ====== */
.canvas-wrap {
  position: relative;
  background: var(--surface);
  overflow: hidden;
}
#stage-container { position: absolute; inset: 0; cursor: default; }
.canvas-overlay {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  pointer-events: none;
}
.canvas-overlay__hint {
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 12px;
  color: var(--muted);
  box-shadow: var(--shadow-sm);
}
.canvas-controls {
  position: absolute;
  bottom: 16px;
  right: 16px;
  z-index: 5;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.canvas-control {
  width: 36px; height: 36px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: grid; place-items: center;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
  transition: background 0.12s ease;
}
.canvas-control:hover { background: var(--surface); }
.canvas-control svg { width: 20px; height: 20px; }
/* 2D/3D toggle */
.view3d-toggle {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 6;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  transition: background 0.15s ease, transform 0.05s ease;
}
.view3d-toggle:hover { background: var(--primary-dark); }
.view3d-toggle:active { transform: translateY(1px); }
.view3d-toggle svg { width: 18px; height: 18px; }

/* 3D overlay — fixed full-screen so it works from any tab (incl. lead step) */
.threed-overlay {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: #E7EDF4;
  display: flex;
  flex-direction: column;
}
.threed-canvas {
  flex: 1;
  min-height: 0;
  position: relative;
}
.threed-canvas canvas { display: block; width: 100%; height: 100%; }
.threed-error {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 40px;
  color: var(--muted);
  font-size: 14px;
}
.threed-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 16px;
  background: #fff;
  border-top: 1px solid var(--border);
}
.threed-bar__title {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 14px;
  color: var(--primary);
}
.threed-bar__title svg { width: 18px; height: 18px; }
.threed-bar__hint { flex: 1; font-size: 12px; color: var(--muted); }
.lead__view3d { margin-bottom: 24px; }

/* Floating Back-to-2D button (always visible, top-right of 3D) */
.threed-close-x {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 18;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px 9px 12px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  transition: background 0.15s ease, transform 0.05s ease;
}
.threed-close-x:hover { background: var(--primary-dark); }
.threed-close-x:active { transform: translateY(1px); }
.threed-close-x svg { width: 18px; height: 18px; }

/* Controls help button + panel */
.help-btn {
  position: absolute;
  bottom: 16px;
  left: 16px;
  z-index: 6;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px 8px 12px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
  transition: background 0.12s ease, border-color 0.12s ease;
}
.help-btn:hover { background: var(--surface); border-color: var(--accent); }
.help-btn svg { width: 18px; height: 18px; }

.help-panel {
  position: absolute;
  bottom: 60px;
  left: 16px;
  z-index: 20;
  width: min(560px, calc(100% - 32px));
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.help-panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  background: var(--primary);
  color: #fff;
}
.help-panel__head strong { font-size: 15px; font-weight: 600; }
.help-panel__close {
  width: 28px; height: 28px;
  display: grid; place-items: center;
  border-radius: 6px;
  color: #fff;
  transition: background 0.12s ease;
}
.help-panel__close:hover { background: rgba(255,255,255,0.15); }
.help-panel__close svg { width: 18px; height: 18px; }
.help-panel__cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}
.help-col { padding: 16px 20px; }
.help-col + .help-col { border-left: 1px solid var(--border); }
.help-col h5 {
  margin: 0 0 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: var(--accent-dark);
}
.help-col ul { list-style: none; margin: 0; padding: 0; }
.help-col li {
  font-size: 13px;
  color: var(--ink-2);
  padding: 5px 0;
  line-height: 1.4;
}
.help-col kbd {
  display: inline-block;
  min-width: 18px;
  padding: 1px 6px;
  margin-right: 4px;
  font-family: inherit;
  font-size: 11px;
  font-weight: 600;
  color: var(--primary);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  text-align: center;
}
@media (max-width: 600px) {
  .help-panel__cols { grid-template-columns: 1fr; }
  .help-col + .help-col { border-left: 0; border-top: 1px solid var(--border); }
  .help-btn span { display: none; }
}

/* Selection toolbar */
.sel-bar {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 7;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 6px 6px 14px;
  background: var(--primary);
  border-radius: 999px;
  box-shadow: var(--shadow-md);
}
.sel-bar__name {
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  margin-right: 6px;
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.sel-bar__btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.12);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  transition: background 0.12s ease;
}
.sel-bar__btn:hover { background: rgba(255,255,255,0.22); }
.sel-bar__btn svg { width: 15px; height: 15px; }
.sel-bar__btn--danger:hover { background: var(--danger); }

.canvas-empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
  text-align: center;
  color: var(--muted);
}
.canvas-empty__inner { max-width: 320px; padding: 24px; }
.canvas-empty__icon { width: 64px; height: 64px; margin: 0 auto 16px; color: var(--muted-2); }
.canvas-empty h3 { font-size: 17px; color: var(--ink-2); margin: 0 0 6px; }
.canvas-empty p { font-size: 13px; margin: 0; }

/* ====== Summary sidebar ====== */
.summary {
  background: #fff;
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.summary__head { padding: 18px 20px 12px; border-bottom: 1px solid var(--border); }
.summary__title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.6px;
  color: var(--muted);
  text-transform: uppercase;
  margin: 0 0 4px;
}
.summary__total { font-size: 28px; font-weight: 700; color: var(--primary); letter-spacing: -0.5px; }
.summary__sub { font-size: 12px; color: var(--muted); margin-top: 4px; }
.summary__list { flex: 1; overflow-y: auto; padding: 12px 8px; }
.summary__empty { padding: 30px 16px; text-align: center; font-size: 13px; color: var(--muted); }
.sum-item {
  display: grid;
  grid-template-columns: 36px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: background 0.12s ease;
}
.sum-item:hover { background: var(--surface); }
.sum-item__icon {
  width: 36px; height: 36px;
  border-radius: 6px;
  background: var(--surface-2);
  display: grid; place-items: center;
  color: var(--primary);
}
.sum-item__icon svg { width: 22px; height: 22px; }
.sum-item__name { font-size: 13px; color: var(--ink); font-weight: 500; line-height: 1.2; }
.sum-item__meta { font-size: 11px; color: var(--muted); margin-top: 2px; }
.sum-item__price { font-size: 13px; font-weight: 600; color: var(--ink); }
.summary__foot { padding: 14px 20px 18px; border-top: 1px solid var(--border); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  transition: background 0.12s ease, transform 0.05s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--cta); color: #fff; }
.btn--primary:hover { background: var(--cta-dark); }
.btn--ghost { background: transparent; color: var(--primary); border-color: var(--border); }
.btn--ghost:hover { background: var(--surface); }
.btn--block { width: 100%; }
.btn--lg { padding: 14px 24px; font-size: 15px; }

/* ====== Quick-start (tab 2 top) ====== */
.quickstart {
  padding: 16px 16px 12px;
  background: linear-gradient(135deg, var(--primary-soft), #fff);
  border-bottom: 1px solid var(--border);
}
.quickstart__title { font-size: 14px; font-weight: 600; margin: 0 0 2px; color: var(--primary); }
.quickstart__sub  { margin: 0 0 12px; font-size: 11.5px; color: var(--muted); }
.quickstart__grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 6px;
}
.qs-card {
  text-align: left;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 8px 8px;
  transition: border-color 0.12s ease, transform 0.05s ease, box-shadow 0.12s ease;
  cursor: pointer;
}
.qs-card:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); }
.qs-card:active { transform: translateY(1px); }
.qs-card__h { font-weight: 700; color: var(--primary); font-size: 13px; }
.qs-card__d { font-size: 10.5px; color: var(--muted); margin-top: 1px; line-height: 1.3; }
.qs-card__p { font-size: 11px; font-weight: 600; color: var(--accent-dark); margin-top: 5px; }

/* Door-style (finish) selector */
.finish-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--accent-soft);
}
.finish-bar label {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-dark);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  white-space: nowrap;
}
.finish-select {
  flex: 1;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
}
.finish-select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

/* ====== Catalog (tab 2) ====== */
.catalog { display: flex; flex-direction: column; height: 100%; background: #fff; }
.catalog__search { padding: 14px 16px 8px; }
.catalog__search input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  font-size: 13px;
}
.catalog__search input:focus { outline: none; border-color: var(--accent); background: #fff; }
.cat-tabs { display: flex; flex-wrap: wrap; gap: 4px; padding: 0 16px 12px; border-bottom: 1px solid var(--border); }
.cat-tab {
  padding: 5px 11px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
  background: var(--surface);
  transition: background 0.12s ease, color 0.12s ease;
}
.cat-tab.is-active { background: var(--primary); color: #fff; }
.cat-list { flex: 1; overflow-y: auto; padding: 8px; }
.cat-item {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 10px;
  align-items: center;
  padding: 8px 10px;
  border-radius: var(--radius);
  background: transparent;
  text-align: left;
  width: 100%;
  margin-bottom: 4px;
  transition: background 0.12s ease;
  border: 1px solid transparent;
}
.cat-item:hover { background: var(--surface); border-color: var(--border); }
.cat-item__thumb {
  width: 44px; height: 44px;
  border-radius: 6px;
  background: var(--surface-2);
  display: grid; place-items: center;
  color: var(--primary);
}
.cat-item__thumb svg { width: 28px; height: 28px; }
.cat-item__photo { width: 100%; height: 100%; object-fit: cover; border-radius: 6px; display: block; }
.sum-item__photo { width: 100%; height: 100%; object-fit: cover; border-radius: 6px; display: block; }
.cat-item__name { font-size: 13px; font-weight: 500; color: var(--ink); line-height: 1.25; }
.cat-item__meta {
  font-size: 11px;
  color: var(--muted);
  margin-top: 2px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.cat-item__price { color: var(--primary); font-weight: 600; }

/* ====== Modal ====== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(20, 30, 50, 0.55);
  display: grid;
  place-items: center;
  z-index: 50;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
}
.modal-backdrop.is-open { opacity: 1; pointer-events: auto; }
.modal {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-width: 720px;
  width: 100%;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transform: translateY(8px);
  transition: transform 0.15s ease;
}
.modal-backdrop.is-open .modal { transform: translateY(0); }
.modal__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 22px 26px 8px;
}
.modal__title { font-size: 22px; font-weight: 700; color: var(--primary); margin: 0 0 4px; }
.modal__sub { font-size: 13px; color: var(--muted); margin: 0; }
.modal__close {
  width: 32px; height: 32px;
  border-radius: 50%;
  display: grid; place-items: center;
  color: var(--muted);
  transition: background 0.12s ease;
}
.modal__close:hover { background: var(--surface); }
.modal__body { padding: 12px 0 24px; overflow-y: auto; flex: 1; }
.modal__foot {
  padding: 16px 26px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  background: var(--surface);
}

/* ====== Lead capture (tab 3) ====== */
.lead {
  height: 100%;
  overflow-y: auto;
  background: linear-gradient(180deg, #fff 0%, var(--surface) 100%);
  padding: 32px 48px 48px;
  grid-column: 2 / 4;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  align-content: start;
}
.lead__hero { max-width: 560px; }
.lead__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 600;
  border-radius: 999px;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.lead h1 { font-size: 30px; color: var(--primary); margin: 0 0 12px; letter-spacing: -0.5px; line-height: 1.15; }
.lead h1 em { font-style: normal; color: var(--cta); }
.lead__desc { font-size: 15px; color: var(--ink-2); line-height: 1.55; margin: 0 0 24px; }
.lead__pricebox {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}
.lead__pricebox-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 4px;
}
.lead__pricebox-value { font-size: 32px; font-weight: 700; color: var(--primary); letter-spacing: -0.8px; }
.lead__pricebox-foot {
  margin-top: 10px;
  font-size: 12px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.lead__list { list-style: none; margin: 0; padding: 0; }
.lead__list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--ink-2);
}
.lead__list svg { width: 18px; height: 18px; color: var(--success); flex-shrink: 0; margin-top: 2px; }

.lead-form {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 26px 28px 28px;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
}
.lead-form__title { font-size: 20px; font-weight: 700; color: var(--primary); margin: 0 0 4px; }
.lead-form__sub { font-size: 13px; color: var(--muted); margin: 0 0 18px; }
.field { margin-bottom: 12px; }
.field label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-2);
  margin-bottom: 5px;
  letter-spacing: 0.2px;
}
.field label .req { color: var(--danger); margin-left: 2px; }
.field input, .field textarea, .field select {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  font-size: 14px;
  transition: border-color 0.12s ease, box-shadow 0.12s ease;
}
.field textarea { min-height: 80px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.field--row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.lead-form__legal {
  font-size: 11px;
  color: var(--muted);
  margin-top: 12px;
  line-height: 1.5;
}
.lead-form__submit { margin-top: 6px; }

.thanks { display: grid; place-items: center; text-align: center; padding: 40px 20px; }
.thanks__icon {
  width: 80px; height: 80px;
  border-radius: 50%;
  background: var(--accent-soft);
  display: grid; place-items: center;
  color: var(--success);
  margin: 0 auto 18px;
}
.thanks__icon svg { width: 44px; height: 44px; }
.thanks h2 { font-size: 24px; color: var(--primary); margin: 0 0 8px; }
.thanks p { font-size: 14px; color: var(--ink-2); margin: 0; max-width: 360px; }

/* ====== Selection chip ====== */
.selection-chip {
  position: absolute;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius);
  padding: 6px 10px;
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  pointer-events: auto;
  z-index: 10;
  box-shadow: var(--shadow-md);
}
.selection-chip button {
  display: grid;
  place-items: center;
  width: 22px; height: 22px;
  border-radius: 4px;
  color: #fff;
  transition: background 0.1s ease;
}
.selection-chip button:hover { background: rgba(255,255,255,0.15); }
.selection-chip__name { font-weight: 600; }
.selection-chip__divider { width: 1px; height: 16px; background: rgba(255,255,255,0.25); }

/* ====== Custom dropdown ====== */
.dd { position: relative; display: inline-block; }
.dd__btn {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 7px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  font-size: 13px;
  min-width: 110px;
  text-align: left;
  color: var(--ink);
  transition: border-color 0.12s ease;
}
.dd__btn:hover { border-color: var(--border-strong); }
.dd__btn svg { width: 14px; height: 14px; color: var(--muted); transition: transform 0.12s ease; }
.dd.is-open .dd__btn svg { transform: rotate(180deg); }
.dd__list {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 100%;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  padding: 4px;
  z-index: 100;
  display: none;
}
.dd.is-open .dd__list { display: block; }
.dd__opt {
  display: block;
  width: 100%;
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  text-align: left;
  color: var(--ink);
}
.dd__opt:hover { background: var(--surface); }
.dd__opt.is-selected { background: var(--primary-soft); color: var(--primary); font-weight: 600; }

/* Openings list (windows/doors) */
.openings-list { padding: 12px 16px; border-top: 1px solid var(--border); }
.openings-list__title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.6px;
  color: var(--muted);
  text-transform: uppercase;
  margin: 0 0 8px;
}
.opening-item {
  display: grid;
  grid-template-columns: 24px 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  transition: background 0.12s ease;
  font-size: 12px;
  color: var(--ink);
}
.opening-item:hover { background: var(--surface); }
.opening-item__icon { width: 20px; height: 20px; color: var(--accent-dark); }
.opening-item__del {
  width: 22px; height: 22px;
  display: grid; place-items: center;
  color: var(--muted);
  border-radius: 4px;
}
.opening-item__del:hover { background: var(--surface-2); color: var(--danger); }

/* ==========================================================================
   Responsive
   ========================================================================== */

/* Large desktop — slightly narrower rails */
@media (max-width: 1180px) {
  :root { --sidebar-w: 250px; --summary-w: 280px; }
}

/* Small desktop / large tablet — drop the summary rail, keep tools + canvas */
@media (max-width: 1024px) {
  :root { --sidebar-w: 240px; }
  .summary { display: none; }
  .workspace { grid-template-columns: var(--sidebar-w) 1fr; }
  .lead { grid-column: 1 / -1; grid-template-columns: 1.05fr 0.95fr; padding: 28px 32px; }
}

/* ──────────────────────────────────────────────────────────────────────────
   MOBILE / narrow embeds (< 760px): vertical stack.
   Canvas on top (fixed share of height), active panel scrolls below.
   The top bar collapses to compact tabs + estimate + Continue.
   ────────────────────────────────────────────────────────────────────────── */
@media (max-width: 760px) {
  :root { --tab-height: 50px; }

  body { overflow: auto; }
  .app { height: 100dvh; }

  /* Top bar: hide brand, let tabs flex, keep actions compact */
  .topbar {
    grid-template-columns: 1fr auto;
    padding: 0 10px;
    gap: 8px;
  }
  .brand { display: none; }
  .tabs { gap: 0; overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
  .tabs::-webkit-scrollbar { display: none; }
  .tab { padding: 0 12px; font-size: 12px; gap: 6px; }
  .tab span:not(.tab__num) { display: inline; }
  .tab__num { width: 18px; height: 18px; font-size: 10px; }
  .topbar__actions { gap: 8px; }
  .summary-pill { padding: 4px 10px; }
  .summary-pill__label { display: none; }
  .summary-pill__value { font-size: 14px; }
  #continue-btn { padding: 8px 12px; font-size: 13px; }

  /* Workspace: single column, canvas on top */
  .workspace {
    grid-template-columns: 1fr;
    grid-template-rows: 46vh 1fr;
    min-height: 0;
  }
  .canvas-wrap { order: 1; min-height: 0; }
  .tools {
    order: 2;
    border-right: 0;
    border-top: 1px solid var(--border);
    -webkit-overflow-scrolling: touch;
  }
  .summary { display: none; }

  /* Tab 1 sidebar tweaks */
  .tools__head { padding: 12px 16px 8px; }
  .tools__hint { font-size: 11.5px; }
  .tool-group { padding: 12px 14px 2px; }
  .shapes { grid-template-columns: repeat(auto-fill, minmax(78px, 1fr)); gap: 8px; padding: 12px 14px 16px; }
  .shape-card svg { max-height: 56px; }
  .shape-card__label { font-size: 11px; }
  .dim-fields { padding: 12px 16px; }

  /* Canvas controls a touch bigger for fingers */
  .canvas-control { width: 40px; height: 40px; }

  /* Lead form (Tab 3): full-width single column */
  .lead {
    grid-column: 1 / -1;
    grid-template-columns: 1fr;
    gap: 22px;
    padding: 20px 16px 32px;
    overflow-y: auto;
  }
  .lead h1 { font-size: 24px; }
  .lead-form { position: static; padding: 22px 18px 24px; }
  .field--row { grid-template-columns: 1fr; gap: 0; }

  /* Catalog list a bit denser */
  .cat-list { padding: 6px; }
  .quickstart__grid { gap: 5px; }

  /* 3D overlay: compact bar, no wrapping hint */
  .view3d-toggle { top: 12px; right: 12px; padding: 8px 12px; font-size: 12px; }
  .view3d-toggle span { display: none; }   /* icon-only on mobile */
  .threed-bar { padding: 8px 12px; gap: 10px; flex-wrap: nowrap; }
  .threed-bar__hint { display: none; }
  .threed-bar__title { font-size: 13px; flex: 1; }
}

/* Very small phones */
@media (max-width: 380px) {
  .tab span:not(.tab__num) { display: none; }  /* numbers only */
  .tab { padding: 0 10px; }
  .shapes { grid-template-columns: 1fr 1fr; }
}

/* Inline wall-dimension editor (overlay on canvas) */
.dim-edit {
  font: 600 13px/1 'Inter', sans-serif;
  color: #1F3B5C;
  background: #fff;
  border: 2px solid #E8861C;
  border-radius: 4px;
  padding: 4px 8px;
  box-shadow: 0 4px 18px -2px rgba(15,30,70,.30);
  outline: none;
  text-align: center;
}
.dim-edit:focus { border-color: #E8861C; }

/* When 3D is auto-opened on Tab 2, scope the overlay to the canvas area
   only — catalog sidebar stays visible so user can keep adding items. */
body.is-tab2-3d #threed-overlay {
  position: absolute;
  inset: 0;
  z-index: 5;
}
body.is-tab2-3d #threed-overlay .threed-bar {
  /* hide redundant top bar inside split mode — tabs already at top of page */
  display: none;
}
body.is-tab2-3d #threed-overlay .threed-close-x {
  /* "Back to plan" button — small, top-right */
  top: 12px;
  right: 12px;
  padding: 6px 12px;
  font-size: 12px;
}