/* ─── Design tokens ─── */
:root {
  --bg:     #080C14;
  --bg-s:   #0E1420;
  --bg-c:   #0A1020;
  --border: #1A2035;
  --accent: #0066FF;
  --al:     #4D94FF;
  --tp:     #EAECF0;
  --ts:     #8A8F9C;
  --tm:     #2E3545;
  --warn:   #F59E0B;
  --error:  #EF4444;
  --success:#22C55E;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 4px 24px rgba(0,0,0,0.5);
}

/* ─── Reset & base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; }

body {
  background: var(--bg);
  color: var(--tp);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--al); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ─── App shell ─── */
#app {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 0 60px;
}

/* ─── Step header ─── */
.step-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
}

.step-header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-badge {
  background: var(--accent);
  color: #fff;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  padding: 4px 8px;
  border-radius: 4px;
}

.brand-title {
  color: var(--ts);
  font-size: 13px;
  font-weight: 500;
}

.steps-nav {
  display: flex;
  align-items: center;
  gap: 0;
  flex: 1;
  justify-content: flex-end;
}

.step-item {
  display: flex;
  align-items: center;
  gap: 6px;
  opacity: 0.35;
  transition: opacity 0.2s;
}

.step-item.active  { opacity: 1; }
.step-item.done    { opacity: 0.7; }

.step-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--tm);
  color: var(--ts);
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  flex-shrink: 0;
  transition: background 0.2s, color 0.2s;
}

.step-item.active .step-num {
  background: var(--accent);
  color: #fff;
}

.step-item.done .step-num {
  background: var(--success);
  color: #fff;
}

.step-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--ts);
  white-space: nowrap;
}

.step-item.active .step-label { color: var(--tp); }

.step-divider {
  width: 24px;
  height: 1px;
  background: var(--border);
  flex-shrink: 0;
}

/* ─── Main content ─── */
.main-content { padding: 32px 24px 0; }

/* ─── Step panels ─── */
.step-panel {
  display: none;
  animation: fadeSlideIn 0.3s ease;
}

.step-panel.active { display: block; }

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── Panel header ─── */
.panel-header { margin-bottom: 28px; }

.panel-header h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--tp);
  margin-bottom: 4px;
}

.panel-header p {
  color: var(--ts);
  font-size: 14px;
}

/* ─── Drop zone ─── */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: var(--bg-s);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  position: relative;
  outline: none;
}

.drop-zone:hover,
.drop-zone:focus,
.drop-zone.dragging {
  border-color: var(--accent);
  background: rgba(0, 102, 255, 0.05);
}

.drop-zone.dragging { border-style: solid; }

.drop-icon { margin-bottom: 16px; }

.drop-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--tp);
  margin-bottom: 6px;
}

.drop-sub {
  color: var(--ts);
  font-size: 14px;
  margin-bottom: 12px;
}

.drop-formats {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--tm);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.link-btn {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  font-size: inherit;
  font-family: inherit;
  padding: 0;
  text-decoration: underline;
}

.link-btn:hover { color: var(--al); }

/* ─── Upload progress ─── */
.upload-progress {
  margin-top: 20px;
  background: var(--bg-s);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
}

.file-info-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.file-icon { flex-shrink: 0; }

.file-meta {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.file-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--tp);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-size {
  font-size: 12px;
  color: var(--ts);
  font-family: 'JetBrains Mono', monospace;
}

.icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.icon-btn:hover { background: var(--tm); }

.progress-bar-wrap {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 8px;
}

.progress-bar {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  width: 0%;
  transition: width 0.2s ease;
}

.progress-label {
  font-size: 12px;
  color: var(--ts);
  font-family: 'JetBrains Mono', monospace;
}

/* ─── Analysis results ─── */
.analysis-results { margin-top: 24px; }

.analysis-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.analysis-card {
  background: var(--bg-s);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}

.analysis-card.pass { border-color: rgba(34,197,94,0.3); }
.analysis-card.warn { border-color: rgba(245,158,11,0.3); }
.analysis-card.fail { border-color: rgba(239,68,68,0.3); }

.analysis-label {
  font-size: 11px;
  color: var(--ts);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 6px;
}

.analysis-value {
  font-size: 15px;
  font-weight: 600;
  color: var(--tp);
  font-family: 'JetBrains Mono', monospace;
}

.analysis-value.pass { color: var(--success); }
.analysis-value.warn { color: var(--warn); }
.analysis-value.fail { color: var(--error); }

/* ─── Manual dims ─── */
.manual-dims {
  background: var(--bg-c);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}

.dims-row {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
  margin-top: 12px;
}

/* ─── Alerts ─── */
.alert {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 12px;
}

.alert svg { flex-shrink: 0; margin-top: 1px; }

.alert-warn {
  background: rgba(245,158,11,0.08);
  border: 1px solid rgba(245,158,11,0.25);
  color: #FCD34D;
}

/* ─── Section blocks ─── */
.section-block { margin-bottom: 32px; }

.section-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--ts);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 14px;
  font-family: 'JetBrains Mono', monospace;
}

/* ─── Process groups ─── */
.process-group { margin-bottom: 20px; }

.process-label {
  font-size: 12px;
  color: var(--ts);
  margin-bottom: 10px;
  font-weight: 500;
}

/* ─── Material grid ─── */
.material-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 10px;
}

.material-card {
  background: var(--bg-s);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  display: flex;
  flex-direction: column;
  gap: 6px;
  user-select: none;
}

.material-card:hover {
  border-color: rgba(0,102,255,0.4);
  background: rgba(0,102,255,0.04);
}

.material-card.selected {
  border-color: var(--accent);
  background: rgba(0,102,255,0.08);
}

.material-card-top {
  display: flex;
  align-items: center;
  gap: 10px;
}

.material-swatch {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.1);
  flex-shrink: 0;
}

.material-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--tp);
}

.material-desc {
  font-size: 11px;
  color: var(--ts);
  line-height: 1.5;
}

/* ─── Qty stepper ─── */
.qty-row {
  display: flex;
  align-items: center;
  gap: 16px;
}

.qty-stepper {
  display: flex;
  align-items: center;
  background: var(--bg-s);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.qty-btn {
  background: none;
  border: none;
  color: var(--tp);
  font-size: 20px;
  width: 44px;
  height: 44px;
  cursor: pointer;
  transition: background 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.qty-btn:hover { background: var(--tm); }
.qty-btn:active { background: var(--border); }

.qty-input {
  background: none;
  border: none;
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
  color: var(--tp);
  font-size: 16px;
  font-weight: 600;
  font-family: 'JetBrains Mono', monospace;
  text-align: center;
  width: 72px;
  height: 44px;
  outline: none;
  -moz-appearance: textfield;
}

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

.discount-badge {
  background: rgba(0,102,255,0.12);
  border: 1px solid rgba(0,102,255,0.3);
  color: var(--al);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 20px;
}

/* ─── Lead time toggle ─── */
.toggle-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.toggle-card {
  flex: 1;
  min-width: 160px;
  background: var(--bg-s);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.toggle-card:hover {
  border-color: rgba(0,102,255,0.4);
}

.toggle-card.active {
  border-color: var(--accent);
  background: rgba(0,102,255,0.08);
}

.toggle-card-inner { display: flex; flex-direction: column; gap: 4px; }

.toggle-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--tp);
}

.toggle-sub {
  font-size: 12px;
  color: var(--ts);
}

/* ─── Finish grid ─── */
.finish-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 10px;
}

.finish-card {
  background: var(--bg-s);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.finish-card:hover { border-color: rgba(0,102,255,0.4); }

.finish-card.selected {
  border-color: var(--accent);
  background: rgba(0,102,255,0.08);
}

.finish-card.disabled {
  opacity: 0.35;
  pointer-events: none;
}

.finish-checkbox {
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--border);
  border-radius: 4px;
  background: var(--bg-c);
  flex-shrink: 0;
  margin-top: 1px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, border-color 0.15s;
}

.finish-card.selected .finish-checkbox {
  background: var(--accent);
  border-color: var(--accent);
}

.finish-info { display: flex; flex-direction: column; gap: 3px; }

.finish-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--tp);
}

.finish-surcharge {
  font-size: 11px;
  color: var(--ts);
  font-family: 'JetBrains Mono', monospace;
}

/* ─── Review grid ─── */
.review-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

@media (max-width: 600px) {
  .review-grid { grid-template-columns: 1fr; }
}

.review-card {
  background: var(--bg-s);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.card-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--ts);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 16px;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  padding: 7px 0;
  border-bottom: 1px solid var(--border);
}

.summary-row:last-child { border-bottom: none; }

.summary-label { color: var(--ts); font-size: 13px; }
.summary-val   { color: var(--tp); font-size: 13px; font-weight: 500; text-align: right; }
.summary-val.mono { font-family: 'JetBrains Mono', monospace; font-size: 12px; }

.price-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  padding: 7px 0;
}

.price-label { color: var(--ts); font-size: 13px; }
.price-val   { color: var(--tp); font-size: 13px; font-weight: 500; font-family: 'JetBrains Mono', monospace; }
.price-val.discount { color: var(--al); }

.price-divider { height: 1px; background: var(--border); margin: 8px 0; }

.total-row { margin-top: 4px; }
.total-row .price-label { color: var(--tp); font-weight: 700; font-size: 14px; }
.total-val { color: var(--accent) !important; font-size: 22px !important; font-weight: 700 !important; }

.quote-valid-note {
  margin-top: 12px;
  font-size: 11px;
  color: var(--ts);
  text-align: right;
}

/* ─── Lead comparison ─── */
.lead-comparison {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-s);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 24px;
}

.lead-card {
  flex: 1;
  text-align: center;
  padding: 12px;
  border-radius: var(--radius-sm);
  transition: background 0.2s;
}

.lead-card.highlighted {
  background: rgba(0,102,255,0.08);
  border: 1px solid rgba(0,102,255,0.2);
}

.lead-card-label { font-size: 12px; color: var(--ts); margin-bottom: 6px; }

.lead-card-price {
  font-size: 20px;
  font-weight: 700;
  color: var(--tp);
  font-family: 'JetBrains Mono', monospace;
}

.lead-divider {
  font-size: 12px;
  color: var(--ts);
  flex-shrink: 0;
}

/* ─── Form fields ─── */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

@media (max-width: 540px) {
  .form-row { grid-template-columns: 1fr; }
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.form-row .field-group { margin-bottom: 0; }

.field-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--ts);
  text-transform: uppercase;
  letter-spacing: 0.7px;
  font-family: 'JetBrains Mono', monospace;
}

.required { color: var(--error); }

.field-input {
  background: var(--bg-s);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--tp);
  font-size: 14px;
  font-family: 'Inter', sans-serif;
  padding: 10px 14px;
  outline: none;
  transition: border-color 0.15s;
  width: 100%;
}

.field-input:focus { border-color: var(--accent); }
.field-input::placeholder { color: var(--tm); }
.field-input.error { border-color: var(--error); }

.field-textarea { resize: vertical; min-height: 100px; }

.field-error {
  font-size: 12px;
  color: var(--error);
  min-height: 16px;
}

/* ─── Checkbox ─── */
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  margin-bottom: 8px;
}

.checkbox-box {
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--border);
  border-radius: 4px;
  background: var(--bg-s);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, border-color 0.15s;
}

.checkbox-label input:checked ~ .checkbox-box {
  background: var(--accent);
  border-color: var(--accent);
}

.checkbox-label input:checked ~ .checkbox-box::after {
  content: '';
  width: 10px;
  height: 6px;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(-45deg) translateY(-1px);
  display: block;
}

.checkbox-label input { display: none; }

.checkbox-text { font-size: 14px; color: var(--ts); }

/* ─── Buttons ─── */
.step-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  border: none;
  transition: background 0.15s, opacity 0.15s, transform 0.1s;
  text-decoration: none;
}

.btn:active { transform: scale(0.98); }

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover { background: #0055DD; }

.btn-primary:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-ghost {
  background: var(--bg-s);
  border: 1px solid var(--border);
  color: var(--ts);
}

.btn-ghost:hover { border-color: var(--ts); color: var(--tp); }

.btn-submit { min-width: 200px; }

.btn-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}

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

/* ─── Confirmation ─── */
.confirmation-wrap {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  padding-top: 16px;
}

.confirm-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(0,102,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.confirm-title {
  font-size: 26px;
  font-weight: 700;
  color: var(--tp);
  margin-bottom: 8px;
}

.confirm-sub {
  font-size: 14px;
  color: var(--ts);
  margin-bottom: 12px;
}

.reference-badge {
  display: inline-block;
  background: var(--bg-s);
  border: 1px solid rgba(0,102,255,0.4);
  border-radius: var(--radius-sm);
  padding: 10px 24px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.confirm-note {
  font-size: 14px;
  color: var(--ts);
  margin-bottom: 28px;
  line-height: 1.6;
}

.confirm-summary {
  background: var(--bg-s);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  text-align: left;
  margin-bottom: 32px;
}

.confirm-summary-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}

.confirm-summary-row:last-child { border-bottom: none; }

.confirm-summary-label { font-size: 13px; color: var(--ts); }
.confirm-summary-val   { font-size: 13px; color: var(--tp); font-weight: 500; font-family: 'JetBrains Mono', monospace; }

/* ─── Next steps ─── */
.next-steps {
  margin-bottom: 32px;
  text-align: left;
}

.next-steps h3 {
  font-size: 14px;
  font-weight: 700;
  color: var(--ts);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 16px;
  text-align: center;
}

.next-steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

@media (max-width: 520px) {
  .next-steps-grid { grid-template-columns: 1fr; }
}

.next-step {
  background: var(--bg-s);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  gap: 12px;
}

.next-step-num {
  width: 28px;
  height: 28px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
  font-family: 'JetBrains Mono', monospace;
}

.next-step-body strong {
  display: block;
  font-size: 13px;
  color: var(--tp);
  margin-bottom: 4px;
}

.next-step-body p {
  font-size: 12px;
  color: var(--ts);
  line-height: 1.5;
}

.confirm-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ─── 3D Model Viewer ─── */
.viewer-wrap {
  margin-top: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-c);
  position: relative;
}

.viewer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-s);
}

.viewer-header-left {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--tp);
}

.viewer-hint {
  font-size: 11px;
  color: var(--ts);
  font-family: 'JetBrains Mono', monospace;
}

#modelViewer {
  width: 100%;
  height: 380px;
  display: block;
  cursor: grab;
}

#modelViewer:active { cursor: grabbing; }

#modelViewer canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

.viewer-loading {
  position: absolute;
  inset: 48px 0 0 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: var(--bg-c);
  color: var(--ts);
  font-size: 13px;
  pointer-events: none;
  transition: opacity 0.3s;
}

.viewer-loading.hidden { opacity: 0; pointer-events: none; }

.viewer-spinner {
  width: 28px;
  height: 28px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ─── Design Guide Panel ─── */
.guide-panel {
  margin-top: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.guide-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg-s);
  border: none;
  color: var(--ts);
  font-size: 13px;
  font-weight: 500;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  text-align: left;
}

.guide-toggle:hover { background: var(--bg-c); color: var(--tp); }

.guide-toggle-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.guide-chevron {
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.guide-panel.open .guide-chevron { transform: rotate(180deg); }

.guide-body {
  padding: 16px;
  background: var(--bg-c);
  border-top: 1px solid var(--border);
}

.guide-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 580px) {
  .guide-grid { grid-template-columns: 1fr; }
}

.guide-machine {
  background: var(--bg-s);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.guide-machine-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}

.guide-process-badge {
  font-size: 10px;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.5px;
  padding: 2px 7px;
  border-radius: 3px;
}

.badge-sls { background: rgba(139,92,246,0.15); color: #A78BFA; }
.badge-sla { background: rgba(59,130,246,0.15); color: #60A5FA; }
.badge-fdm { background: rgba(16,185,129,0.15); color: #34D399; }

.guide-machine-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--tp);
}

.guide-table {
  width: 100%;
  border-collapse: collapse;
}

.guide-table td {
  padding: 7px 14px;
  font-size: 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  line-height: 1.4;
}

.guide-table tr:last-child td { border-bottom: none; }

.guide-table td:first-child { color: var(--ts); width: 60%; }
.guide-table td:last-child  { color: var(--tp); font-family: 'JetBrains Mono', monospace; font-weight: 600; white-space: nowrap; }

.guide-volume-row td { background: rgba(0,102,255,0.04); }
.guide-volume-row td:last-child { color: var(--al); }

/* ─── Responsive ─── */
@media (max-width: 600px) {
  .step-header { padding: 12px 16px; }
  .main-content { padding: 20px 16px 0; }
  .steps-nav { gap: 0; }
  .step-label { display: none; }
  .step-divider { width: 12px; }
  .material-grid { grid-template-columns: repeat(2, 1fr); }
  .step-actions { flex-direction: column-reverse; }
  .btn { width: 100%; justify-content: center; }
}

/* ── Delivery address form ── */
.section-divider {
  height: 1px;
  background: #1A2035;
  margin: 28px 0 24px;
}
.field-select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' stroke='%238A8F9C' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
  cursor: pointer;
}

/* ── Pay & Confirm step ── */
.pay-total-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #0E1420;
  border: 1px solid #1A2035;
  border-radius: 10px;
  padding: 18px 20px;
  margin: 16px 0;
}
.pay-total-label { font-size: 14px; color: #8A8F9C; }
.pay-total-amount { font-size: 24px; font-weight: 700; color: #0066FF; font-family: 'JetBrains Mono', monospace; }
.pay-note {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 12px;
  color: #8A8F9C;
  line-height: 1.5;
  margin-top: 4px;
}
.pay-note svg { flex-shrink: 0; margin-top: 1px; }
.btn-pay { gap: 8px; }

/* ── Payment success banner ── */
.payment-success-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #052e16;
  border: 1px solid #16a34a;
  color: #4ade80;
  font-size: 15px;
  font-weight: 600;
  padding: 14px 18px;
  border-radius: 10px;
  margin-bottom: 4px;
}
.payment-success-banner svg { flex-shrink: 0; }

.confirm-email-note {
  font-size: 13px;
  color: #8A8F9C;
  margin: 12px 0 20px;
  text-align: center;
}