/* calc.css — calculator widgets: tools grid, calc-card, inputs, result boxes,
   multi-room, modal, shape details, embed widget styles.
   Loaded by calculator pages, embed pages and embed.html (always after base.css). */
/* ===== TOOLS GRID ===== */
.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}
.tool-card{display:flex;flex-direction:column;background:var(--card);border:1.5px solid var(--border);border-radius:var(--radius-sm);padding:16px;text-decoration:none;color:var(--text);transition:all var(--transition);position:relative;overflow:hidden}
.tool-card:hover{border-color:var(--primary);box-shadow:var(--shadow);transform:translateY(-2px);text-decoration:none}
.tool-card .tc-icon{font-size:1.5rem;margin-bottom:6px}
.tool-card h3{font-size:1rem;font-weight:700;color:var(--text);margin-bottom:4px;transition:color var(--transition)}
.tool-card:hover h3{color:var(--primary)}
.tool-card p{font-size:0.8rem;color:var(--text-secondary);margin-bottom:0;flex:1;line-height:1.4}
.tool-card .tc-tags{display:flex;flex-wrap:wrap;gap:4px;margin-top:8px}
.tool-card .tc-tags span{display:inline-flex;font-size:0.65rem;font-weight:600;color:var(--primary);background:var(--primary-light);padding:2px 6px;border-radius:10px}
.tool-card .tc-arrow{position:absolute;top:14px;right:14px;font-size:0.85rem;color:var(--text-muted);transition:all var(--transition)}
.tool-card:hover .tc-arrow{color:var(--primary);transform:translateX(4px)}
.tool-card.blue{border-top:4px solid var(--primary)}
.tool-card.orange{border-top:4px solid #f59e0b}
.tool-card.green{border-top:4px solid var(--success)}
.tool-card.purple{border-top:4px solid var(--purple)}
.tool-card.pink{border-top:4px solid #ec4899}
.tool-card.teal{border-top:4px solid #14b8a6}

/* ===== CALCULATOR COMPONENTS ===== */
.calc-section { padding: 20px 0 50px; }
.calc-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 22px;
  margin-top: -32px;
  position: relative;
  z-index: 10;
  transition: background var(--transition), box-shadow var(--transition);
}
.calc-inner-split {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 28px;
  align-items: start;
}
.calc-left-col { min-width: 0; }
.calc-right-col { position: sticky; top: calc(var(--nav-height) + 16px); }
.calc-right-col .result-box { margin-top: 0; }
@media (max-width: 900px) {
  .calc-inner-split { grid-template-columns: 1fr; }
  .calc-right-col { position: static; }
}

.input-group { margin-bottom: 14px; }
.input-group label {
  display: block;
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 4px;
  color: var(--text);
}
.input-row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}
.input-row input[type="number"], .input-row select {
  flex: 1;
  min-width: 80px;
  padding: 8px 10px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
  transition: border-color var(--transition);
  outline: none;
  appearance: textfield;
  -moz-appearance: textfield;
}
.input-row select { cursor: pointer; appearance: auto; }
.input-row input[type="number"]:focus, .input-row select:focus { border-color: var(--primary); }
.input-row input[type="number"]::-webkit-outer-spin-button,
.input-row input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.input-row .in-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  min-width: 24px;
}
.input-row .unit-select {
  min-width: 60px;
  padding: 8px 6px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card);
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition);
}
.input-row .unit-select:focus { border-color: var(--primary); }

.section-divider { margin: 30px 0; border: none; border-top: 1px solid var(--border); }
.section-divider-light { margin: 16px 0; border: none; border-top: 1px solid var(--border); }

.option-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 6px;
  margin-bottom: 14px;
}
.option-btn {
  padding: 10px 8px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all var(--transition);
  text-align: center;
}
.option-btn:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
.option-btn.active { border-color: var(--primary); background: var(--primary); color: #fff; }
.option-btn .opt-sub {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  opacity: 0.75;
  margin-top: 2px;
}

.result-box {
  background: linear-gradient(135deg, var(--primary-light), var(--card));
  border: 2px solid var(--primary);
  border-radius: var(--radius);
  padding: 18px;
  margin-top: 24px;
  text-align: center;
  transition: all var(--transition);
  overflow: hidden;
}
.result-box .result-area {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
  overflow-wrap: break-word;
  word-break: break-all;
}
.result-box .result-unit {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
}
.result-box .result-sub {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.result-box .result-cost {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--success);
  margin-bottom: 10px;
}
.result-breakdown {
  text-align: left;
  margin: 10px 0 0;
  padding: 10px 12px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  font-size: 0.85rem;
}
.result-breakdown .br-row {
  display: flex;
  justify-content: space-between;
  padding: 4px 0;
  color: var(--text-secondary);
}
.result-breakdown .br-row .br-val { font-weight: 600; color: var(--text); }

.result-actions {
  display: flex;
  gap: 6px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 10px;
}
.result-actions button {
  padding: 6px 12px;
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.8rem;
  cursor: pointer;
  background: var(--card);
  color: var(--text);
  box-shadow: var(--shadow);
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 5px;
}
.result-actions button:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.result-actions button.danger-btn { background: var(--danger); color: #fff; }
.result-actions button.danger-btn:hover { background: #dc2626; }
.result-actions button.primary-btn { background: var(--primary); color: #fff; }
.result-actions button.primary-btn:hover { background: var(--primary-dark); }

.breakdown-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  margin: 10px 0 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--card);
}
.br-item {
  padding: 8px 4px;
  text-align: center;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--card);
  transition: background var(--transition);
}
.br-item:nth-child(2n) { border-right: none; }
.br-item:nth-last-child(-n+2) { border-bottom: none; }
.br-item:hover { background: var(--primary-light); }
.br-item .br-value {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  overflow-wrap: break-word;
  word-break: break-all;
}
.br-item .br-label {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-top: 1px;
}
.breakdown-single { text-align: left; margin: 10px 0 12px; padding: 10px 12px; background: var(--bg); border-radius: var(--radius-sm); border: 1px solid var(--border); font-size: 0.85rem; }
.breakdown-single .br-row { display: flex; justify-content: space-between; padding: 4px 0; color: var(--text-secondary); }
.breakdown-single .br-row .br-val { font-weight: 600; color: var(--text); }

.conversion-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  margin: 10px 0 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--card);
}
.conversion-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.conversion-grid.cols-3 .conversion-item:nth-child(3n) { border-right: none; }
.conversion-grid.cols-3 .conversion-item:nth-last-child(-n+3) { border-bottom: none; }
.conversion-grid .conversion-item:last-child { border-right: none; }
@media (max-width: 500px) {
  .conversion-grid.cols-3 { grid-template-columns: repeat(2, 1fr); }
  .conversion-grid.cols-3 .conversion-item:nth-child(3n) { border-right: 1px solid var(--border); }
  .conversion-grid.cols-3 .conversion-item:nth-child(2n) { border-right: none; }
  .conversion-grid.cols-3 .conversion-item:nth-last-child(-n+2) { border-bottom: none; }
}
.conversion-item {
  padding: 8px 4px;
  text-align: center;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--card);
  transition: background var(--transition);
}
.conversion-item:nth-child(2n) { border-right: none; }
.conversion-item:nth-last-child(-n+2) { border-bottom: none; }
.conversion-item:hover { background: var(--primary-light); }
.conversion-item .cv-value {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  overflow-wrap: break-word;
  word-break: break-all;
}
.conversion-item .cv-label {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-top: 1px;
}

/* Unit toggle */
.unit-toggle {
  display: flex;
  gap: 0;
  margin-bottom: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  width: fit-content;
}
.unit-btn {
  padding: 6px 16px;
  border: none;
  background: var(--card);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.unit-btn:not(:last-child) { border-right: 1px solid var(--border); }
.unit-btn.active { background: var(--primary); color: #fff; }
.unit-btn:hover:not(.active) { background: var(--primary-light); color: var(--primary); }

/* Tabs */
.tab-bar {
  display: flex;
  gap: 0;
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 3px;
  margin-bottom: 18px;
  border: 1px solid var(--border);
}
.tab-btn {
  flex: 1;
  padding: 8px 16px;
  border: none;
  background: transparent;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.tab-btn.active {
  background: var(--card);
  color: var(--primary);
  box-shadow: var(--shadow);
}
.tab-btn:hover:not(.active) { color: var(--text); }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* Shape selector */
.shape-selector {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}
.shape-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 7px 12px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card);
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.shape-btn:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
.shape-btn.active { border-color: var(--primary); background: var(--primary); color: #fff; }

/* Inches input (ft + in pairs) */
.inches-input { display: flex; align-items: center; gap: 6px; }
.inches-input input { max-width: 70px; }
.inches-input.hidden { display: none; }

/* SVG diagrams */
.shape-diagram {
  display: flex;
  justify-content: center;
  margin-bottom: 14px;
  padding: 14px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  min-height: 100px;
  align-items: center;
  border: 1px solid var(--border);
}
.shape-diagram svg { max-width: 200px; height: auto; }
#arrowR polygon, #arrowD polygon, #arrowU polygon { fill: var(--primary); }

/* Cost section */
.cost-section {
  margin-top: 14px;
  padding: 14px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.cost-section h3 {
  font-size: 0.9rem;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.cost-row {
  display: flex;
  gap: 12px;
  align-items: end;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.cost-field { flex: 1; min-width: 120px; }
.cost-field label { font-size: 0.85rem; font-weight: 500; color: var(--text-secondary); display: block; margin-bottom: 4px; }
.cost-field input {
  width: 100%;
  padding: 8px 10px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card);
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition);
}
.cost-field input:focus { border-color: var(--primary); }


/* Material grid (cubic yard) */
.material-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin: 20px 0;
}
.material-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  text-align: center;
  transition: all var(--transition);
}
.material-card:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.material-card .mc-label { font-weight: 700; font-size: 1rem; color: var(--text); }
.material-card .mc-weight { font-size: 0.85rem; color: var(--text-muted); margin-top: 4px; }

/* Tip cards */
.tip-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
  margin: 20px 0;
}
.tip-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  transition: all var(--transition);
}
.tip-card:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.tip-card .tip-icon { font-size: 1.4rem; flex-shrink: 0; }
.tip-card h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 4px; }
.tip-card p { font-size: 0.82rem; color: var(--text-secondary); margin-bottom: 0; line-height: 1.5; }

/* Size chart (tile) */
.size-chart {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
  margin: 20px 0;
}
.size-chart-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  text-align: center;
  transition: all var(--transition);
}
.size-chart-item:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.size-chart-item .sc-label { font-weight: 700; font-size: 1rem; color: var(--text); }
.size-chart-item .sc-detail { font-size: 0.8rem; color: var(--text-muted); margin-top: 4px; }

/* Collapsible (roofing) */
.collapsible-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition);
}
.collapsible-header:hover { border-color: var(--primary); }
.collapsible-header::after { content: '+'; font-size: 1.2rem; color: var(--primary); }
.collapsible-header.open::after { content: '\2212'; }
.collapsible-body { display: none; padding: 14px 16px; border: 1px solid var(--border); border-top: none; border-radius: 0 0 var(--radius-sm) var(--radius-sm); }
.collapsible-body.open { display: block; }

/* Roof type cards (roofing) */
.roof-type-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin: 20px 0;
}
.rt-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  text-align: center;
  transition: all var(--transition);
}
.rt-card:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.rt-card h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 4px; }
.rt-card p { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 0; }
.rt-card .rt-formula { font-family: 'Courier New', monospace; font-size: 0.78rem; color: var(--primary); background: var(--primary-light); padding: 2px 8px; border-radius: 4px; display: inline-block; margin-top: 6px; }

/* Steps list (roofing) */
.steps-list { list-style: none; padding: 0; margin: 16px 0; counter-reset: step; }
.steps-list li {
  padding: 12px 0 12px 40px;
  position: relative;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  counter-increment: step;
}
.steps-list li:last-child { border-bottom: none; }
.steps-list li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 12px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.steps-list li strong { color: var(--text); }

/* Multi-room */
.multi-form {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}
.multi-form-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.multi-form-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: end;
}
.multi-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.multi-field label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.multi-field input {
  padding: 10px 12px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card);
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition);
}
.multi-field input:focus { border-color: var(--primary); }
.multi-field.name-field { flex: 1; min-width: 140px; }
.multi-field.dim-field { width: 80px; }
.multi-field .dim-group {
  display: flex;
  gap: 4px;
  align-items: center;
}
.multi-field .dim-group input { width: 60px; }
.multi-field .dim-group .in-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  min-width: 20px;
}
.add-room-btn {
  padding: 10px 24px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  height: 42px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.add-room-btn:hover { background: var(--primary-dark); transform: translateY(-1px); }

/* Room stats bar */
.room-stats {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  padding: 12px 16px;
  background: var(--primary-light);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  border: 1px solid var(--primary);
  align-items: center;
  justify-content: space-between;
}
.room-stats .stat-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.room-stats .stat-value {
  font-weight: 700;
  color: var(--primary);
  font-size: 1rem;
}
.room-stats .stat-label { color: var(--text-muted); }
.room-stats .room-badge {
  background: var(--primary);
  color: #fff;
  border-radius: 20px;
  padding: 2px 10px;
  font-size: 0.8rem;
  font-weight: 700;
}

/* Room cards */
.room-list { margin: 0 0 12px; }
.room-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.room-card:hover { background: var(--card-hover); border-color: var(--primary); }
.room-card .room-number {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
}
.room-card .room-info { flex: 1; min-width: 0; }
.room-card .room-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.room-card .room-name .edit-name-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 2px;
  border-radius: 3px;
  transition: color var(--transition);
}
.room-card .room-name .edit-name-btn:hover { color: var(--primary); }
.room-card .room-name input[type="text"] {
  font-size: 0.9rem;
  padding: 2px 6px;
  border: 2px solid var(--primary);
  border-radius: 4px;
  background: var(--card);
  color: var(--text);
  outline: none;
  width: 140px;
}
.room-card .room-dims {
  color: var(--text-secondary);
  font-size: 0.85rem;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 2px;
}
.room-card .room-dims .dim-chip {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 8px;
  font-size: 0.8rem;
  display: inline-flex;
  align-items: center;
  gap: 3px;
}
.room-card .room-actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}
.room-card .room-del {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--danger);
  cursor: pointer;
  font-size: 1.1rem;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.room-card .room-del:hover { background: var(--danger-light); color: #dc2626; }

/* Empty state */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
}
.empty-state .empty-icon {
  font-size: 3rem;
  margin-bottom: 12px;
  opacity: 0.5;
}
.empty-state .empty-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.empty-state .empty-desc {
  font-size: 0.9rem;
  max-width: 300px;
  margin: 0 auto;
}

/* Room total / actions bar */
.room-actions-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px 0 0;
  border-top: 2px solid var(--primary);
  margin-top: 4px;
}
.room-total {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.room-total .total-label { font-weight: 600; color: var(--text-secondary); font-size: 0.9rem; }
.clear-all-btn {
  padding: 8px 16px;
  background: transparent;
  color: var(--danger);
  border: 2px solid var(--danger);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}
.clear-all-btn:hover { background: var(--danger); color: #fff; }

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 20px;
  backdrop-filter: blur(4px);
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--card);
  border-radius: var(--radius);
  padding: 32px;
  max-width: 480px;
  width: 100%;
  box-shadow: var(--shadow-lg);
  position: relative;
  animation: modalIn 0.3s ease;
}
@keyframes modalIn { from { opacity: 0; transform: scale(0.95) translateY(10px); } to { opacity: 1; transform: scale(1) translateY(0); } }
.modal h2 { margin-bottom: 20px; font-size: 1.4rem; }
.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--text-muted);
  padding: 4px;
  transition: color var(--transition);
}
.modal-close:hover { color: var(--text); }
.modal-btn {
  width: 100%;
  padding: 12px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  margin-bottom: 10px;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all var(--transition);
}
.modal-btn:hover { transform: translateX(4px); }
.modal-btn.pdf-btn { background: var(--danger-light); color: var(--danger); }
.modal-btn.csv-btn { background: var(--success-light); color: var(--success); }
.modal-btn.link-btn { background: var(--info-light); color: var(--info); }

/* Shape detail cards */
.shape-detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 20px;
  margin: 24px 0;
}
.shape-detail-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: all var(--transition);
}
.shape-detail-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.shape-detail-card .sd-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 1.1rem;
  font-weight: 700;
}
.shape-detail-card .sd-body {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.shape-detail-card .sd-body .sd-diagram {
  flex-shrink: 0;
  display: flex;
  justify-content: center;
  padding: 14px;
  min-width: 120px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  align-items: center;
}
.shape-detail-card .sd-body .sd-diagram svg { max-width: 170px; height: auto; }
.shape-detail-card .sd-body .sd-content { flex: 1; min-width: 0; }
@media (max-width: 500px) {
  .shape-detail-card .sd-body { flex-direction: column; align-items: center; }
  .shape-detail-card .sd-body .sd-diagram { width: 100%; }
  .shape-detail-card .sd-body .sd-diagram svg { max-width: 160px; }
}

/* Room sizes grid */
.room-sizes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin-top: 20px;
}
.room-size-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  text-align: center;
  transition: all var(--transition);
  cursor: default;
}
.room-size-card:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.room-size-card .size-label { font-weight: 700; font-size: 1.1rem; color: var(--text); }
.room-size-card .size-area { color: var(--primary); font-weight: 600; font-size: 0.95rem; }


/* Project type badge (concrete) */
.project-type-badge {
  display: inline-block;
  background: var(--danger-light);
  color: var(--danger);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 12px;
  margin-bottom: 8px;
}

/* Embed page (embed.html) */
.embed-page { padding: 40px 0; }
.embed-page h1 { font-size: 2rem; margin-bottom: 0.5rem; }
.embed-page .subtitle { color: var(--text-secondary); font-size: 1.05rem; margin-bottom: 2.5rem; }
.embed-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
  transition: all var(--transition);
}
.embed-card:hover { box-shadow: var(--shadow-lg); border-color: var(--primary); }
.embed-card h3 { font-size: 1.2rem; margin-bottom: 4px; }
.embed-card .ec-desc { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 12px; }
.embed-card .ec-code {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-family: 'Courier New', monospace;
  font-size: 0.82rem;
  color: var(--text);
  overflow-x: auto;
  white-space: pre;
  word-break: break-all;
  margin-bottom: 10px;
  position: relative;
}
.embed-card .ec-copy {
  padding: 6px 14px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition);
}
.embed-card .ec-copy:hover { background: var(--primary-dark); }
.embed-card .ec-preview {
  margin-top: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  max-width: 100%;
}
.embed-card .ec-preview iframe { width: 100%; border: none; }
.ec-embed-wrap { display: none; }
.ec-embed-wrap.open { display: block; }
.toggle-preview {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  font-size: 0.8rem;
  cursor: pointer;
  color: var(--text-secondary);
  margin-left: 8px;
  transition: all var(--transition);
}
.toggle-preview:hover { border-color: var(--primary); color: var(--primary); }

/* Embed widget overrides (embed-*.html iframes) */
body.embed-widget { padding-top: 0; }
body.embed-widget .navbar, body.embed-widget .footer, body.embed-widget .back-to-top { display: none !important; }
body.embed-widget .calc-card { margin-top: 0; box-shadow: var(--shadow-lg); }
body.embed-widget .calc-right-col { top: 16px; }
body.embed-widget .result-box { margin-top: 0; }
body.embed-widget .embed-footer { display: block; }
.embed-footer {
  margin-top: 20px;
  padding: 14px 0;
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.embed-footer a { color: var(--primary); }

/* Embed mode (main pages when embedded) */
body.embed-mode .hero,
body.embed-mode #navbar-placeholder,
body.embed-mode #footer-placeholder,
body.embed-mode .back-to-top,
body.embed-mode .toast-container,
body.embed-mode .faq-list,
body.embed-mode section:not(.calc-section) { display: none !important; }
body.embed-mode .calc-section { padding: 0; }
body.embed-mode .calc-card { margin-top: 0; box-shadow: none; border: 1px solid var(--border); }
body.embed-mode { padding-top: 0; }

/* Responsive calculator tweaks */
@media (max-width: 900px) {
  .calc-card { padding: 20px; margin-top: -30px; }
  .result-box .result-area { font-size: 2rem; }
}
@media (max-width: 500px) {
  .calc-card { padding: 16px; }
  .result-box .result-area { font-size: 1.6rem; }
  .option-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .multi-form-row { flex-direction: column; }
  .multi-form-row .add-room-btn { width: 100%; justify-content: center; }
  .multi-field.name-field { width: 100%; }
  .multi-field.dim-field { width: 100%; }
  .multi-field .dim-group { width: 100%; }
  .multi-field .dim-group input { flex: 1; }
  .room-stats { flex-direction: column; align-items: stretch; text-align: center; }
  .room-card { flex-wrap: wrap; }
  .room-card .room-actions { width: 100%; justify-content: flex-end; }
  .room-actions-bar { flex-direction: column; align-items: stretch; text-align: center; }
}
@media(max-width:900px){
  .shape-detail-grid { grid-template-columns: 1fr; }
  .room-sizes-grid { grid-template-columns: repeat(2, 1fr); }
}