:root {
  font-family: Inter, system-ui, Arial, sans-serif;
  color: #0f172a;
  background: #eef4f8;
}
* { box-sizing: border-box; }
body { margin: 0; }
.app-shell { min-height: 100vh; padding: 24px; }
.hero {
  max-width: 1280px; margin: 0 auto 24px; padding: 28px;
  border-radius: 28px; color: white;
  background: linear-gradient(135deg, #0f172a, #0f4c81 55%, #1d74b7);
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 24px;
}
.eyebrow { display:inline-block; padding: 8px 12px; border-radius: 999px; background: rgba(255,255,255,.12); font-size:12px; font-weight:700; letter-spacing:.08em; text-transform:uppercase; }
.hero h1 { margin: 16px 0 10px; font-size: 44px; line-height: 1.05; }
.hero p { margin: 0; color: rgba(255,255,255,.85); max-width: 720px; }
.hero-stats { display:grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.hero-card, .summary-card { background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.15); border-radius: 18px; padding: 16px; }
.hero-card span, .summary-card span { display:block; font-size:12px; color: rgba(255,255,255,.75); }
.hero-card strong, .summary-card strong { display:block; margin-top:6px; font-size: 24px; }
.main-grid { max-width: 1280px; margin: 0 auto; display:grid; grid-template-columns: 1.05fr .95fr; gap: 24px; }
.panel { background:#fff; border-radius: 28px; padding: 24px; box-shadow: 0 14px 36px rgba(15,23,42,.08); }
.panel h2 { margin: 0 0 6px; font-size: 28px; }
.subtle { color: #64748b; font-size: 14px; }
.form-grid { display:grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 20px; }
.field { display:flex; flex-direction:column; gap: 8px; }
.field-span-2 { grid-column: span 2; }
.field span { font-size: 14px; font-weight: 600; }
.field input, .field select {
  height: 46px; border: 1px solid #d7e2ea; border-radius: 14px; padding: 0 14px; background: #f8fbfd; font: inherit;
}
.actions { display:flex; gap: 12px; margin-top: 22px; }
.btn { border: 0; border-radius: 14px; padding: 12px 18px; font: inherit; font-weight: 700; cursor: pointer; }
.btn-primary { background: linear-gradient(135deg, #0f4c81, #1d74b7); color: white; }
.btn-secondary { background: #eef2f7; color: #0f172a; }
.summary-grid { display:grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 18px; }
.summary-card { background: #f8fbfd; border: 1px solid #e2e8f0; color: #0f172a; }
.summary-card span { color: #64748b; }
.warning { margin-top: 14px; padding: 14px 16px; border-radius: 16px; background: #fff7ed; color: #9a3412; border: 1px solid #fdba74; }
.recommendation { margin-top: 14px; padding: 16px; border-radius: 18px; background: #ecfdf5; border:1px solid #a7f3d0; }
.recommendation-model { margin: 6px 0; font-size: 28px; font-weight: 800; }
.results-list { display:flex; flex-direction:column; gap: 12px; margin-top: 16px; }
.result-card { border:1px solid #e2e8f0; border-radius: 18px; padding: 16px; }
.result-head { display:flex; justify-content:space-between; gap:12px; }
.model { font-weight: 700; font-size: 18px; }
.pill { white-space: nowrap; background:#0f172a; color:white; border-radius:999px; padding:8px 12px; font-weight:700; }
.result-grid { display:grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 14px; }
.stat-box { background:#f8fbfd; border-radius:14px; padding:12px; }
.stat-label { color:#64748b; font-size:12px; text-transform:uppercase; letter-spacing:.04em; }
.stat-value { margin-top:6px; font-weight:600; }
.note { margin-top: 12px; background:#fffbeb; border-radius:14px; padding:12px; color:#92400e; font-size:14px; }
.empty { margin-top: 16px; padding: 20px; border:1px dashed #cbd5e1; border-radius:16px; color:#64748b; background:#f8fbfd; }
@media (max-width: 960px) {
  .hero, .main-grid { grid-template-columns: 1fr; }
  .form-grid, .summary-grid, .result-grid, .hero-stats { grid-template-columns: 1fr; }
  .field-span-2 { grid-column: span 1; }
  .app-shell { padding: 12px; }
  .hero h1 { font-size: 34px; }
}




/* Compact engineering-style UI */
body {
  font-family: Arial, sans-serif;
  background: #f5f7fa;
  margin: 0;
  padding: 10px;
  color: #1f2937;
}

.shell,
.app-shell,
.container {
  max-width: 1100px;
  margin: 0 auto;
}

main,
.main,
.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}

.card,
.panel,
.form-card,
.summary {
  background: #fff;
  border-radius: 10px;
  padding: 14px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
  border: 1px solid #e5e7eb;
}

.form-grid,
.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.field-span-2 {
  grid-column: span 2;
}

label,
.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

label > span,
.field > span {
  font-size: 12px;
  font-weight: 600;
  color: #444;
}

input,
select,
button {
  box-sizing: border-box;
  font-family: Arial, sans-serif;
  font-size: 13px;
}

input,
select {
  width: 100%;
  padding: 6px 8px;
  height: 34px;
  min-height: 34px;
  border-radius: 6px;
  border: 1px solid #cfd6df;
  background: #fff;
}

input:focus,
select:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 2px rgba(59,130,246,0.12);
}

.button-row,
.actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

button {
  height: 34px;
  padding: 0 14px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
}

button.primary,
button:not(.secondary) {
  background: #2563eb;
  color: #fff;
}

button.secondary {
  background: #e5e7eb;
  color: #111827;
}

h1 {
  font-size: 18px;
  margin: 0 0 8px 0;
}

h2 {
  font-size: 16px;
  margin: 0 0 8px 0;
}

h3 {
  font-size: 14px;
  margin: 0 0 6px 0;
}

.results-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.result-card {
  border: 1px solid #d8dee7;
  border-radius: 8px;
  padding: 10px;
  background: #fff;
}

.result-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.model {
  font-size: 14px;
  font-weight: bold;
  line-height: 1.2;
}

.subtle {
  font-size: 11px;
  color: #666;
}

.badge {
  background: #eff6ff;
  color: #1d4ed8;
  border: 1px solid #bfdbfe;
  border-radius: 999px;
  padding: 4px 8px;
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
  margin-top: 8px;
  font-size: 12px;
}

.metric-cell {
  background: #f8fafc;
  border: 1px solid #e5e7eb;
  border-radius: 6px;
  padding: 6px 8px;
  line-height: 1.3;
}

.note-compact {
  margin-top: 8px;
  font-size: 11px;
  color: #7c5a00;
  background: #fff7db;
  border: 1px solid #f2df9b;
  border-radius: 6px;
  padding: 6px 8px;
}

.empty {
  font-size: 12px;
  padding: 10px;
  border: 1px dashed #cbd5e1;
  border-radius: 6px;
  background: #fafafa;
}

@media (max-width: 900px) {
  main,
  .main,
  .layout {
    grid-template-columns: 1fr;
  }

  .form-grid,
  .grid,
  .result-grid {
    grid-template-columns: 1fr;
  }

  .field-span-2 {
    grid-column: span 1;
  }
}


/* Note panel removed per request */
.note-compact, .note { display:none !important; }


/* Rebuilt latest changes */
.metric {
  background: #f8fafc;
  border: 1px solid #e5e7eb;
  border-radius: 6px;
  padding: 6px 8px;
  font-size: 12px;
  line-height: 1.3;
}
.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 10px;
}
.result-actions { margin-top: 8px; }
.product-info-btn {
  display: inline-block;
  height: 30px;
  line-height: 30px;
  padding: 0 12px;
  border-radius: 6px;
  background: #2563eb;
  color: #fff !important;
  text-decoration: none;
  font-size: 12px;
  font-weight: 600;
}
.product-info-btn:hover { text-decoration: none; opacity: .95; }
.note-compact, .note { display:none !important; }
@media (max-width: 900px) {
  .summary-grid { grid-template-columns: 1fr 1fr; }
}


.result-actions { margin-top: 8px; }
.product-info-btn {
  display: inline-block;
  height: 30px;
  line-height: 30px;
  padding: 0 12px;
  border-radius: 6px;
  background: #2563eb;
  color: #fff !important;
  text-decoration: none;
  font-size: 12px;
  font-weight: 600;
}
.note, .note-compact { display:none !important; }
@media (max-width: 900px) {
  .altitude-row { grid-template-columns: 1fr; }
}






@media (max-width: 900px) {
  .altitude-row {
    grid-template-columns: 1fr !important;
  }
}



.result-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 150px;
  gap: 16px;
  align-items: start;
}

.result-content {
  min-width: 0;
}

.result-image-wrap {
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

.result-image {
  max-width: 140px;
  width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: 8px;
}

@media (max-width: 900px) {
  .result-top {
    grid-template-columns: 1fr;
  }

  .result-image-wrap {
    justify-content: flex-start;
  }

  .result-image {
    max-width: 120px;
  }
}


/* Fix vertical alignment of button text */
button, .btn {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 42px; /* ensure consistent height */
  line-height: normal;
}


/* Branded key features section */
.key-features {
  margin-top: 12px;
  border: 1px solid #d9e8f4;
  border-radius: 10px;
  overflow: hidden;
  background: linear-gradient(180deg, #f9fcff 0%, #f3f8fc 100%);
}

.key-features-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: linear-gradient(135deg, #0f4c81, #1d74b7);
  color: #fff;
}

.key-features-kicker {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border: 1px solid rgba(255,255,255,0.35);
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(255,255,255,0.12);
}

.key-features-title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.key-features-list {
  list-style: none;
  margin: 0;
  padding: 10px 12px 10px 12px;
  display: grid;
  gap: 6px;
}

.key-features-list li {
  position: relative;
  padding-left: 18px;
  color: #1f2937;
  font-size: 12px;
  line-height: 1.35;
}

.key-features-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0f4c81, #1d74b7);
  box-shadow: 0 0 0 2px rgba(29,116,183,0.14);
}


.field-limit {
  display: block;
  margin-top: 2px;
  font-size: 11px;
  color: #1d4ed8;
}

.field-error {
  display: block;
  margin-top: 2px;
  font-size: 11px;
  font-weight: 600;
  color: #b91c1c;
}

.field-invalid input,
.field-invalid select {
  border-color: #dc2626 !important;
  background: #fef2f2;
  box-shadow: 0 0 0 1px rgba(220,38,38,0.1);
}

button:disabled,
.btn-disabled {
  opacity: 0.6;
  cursor: not-allowed;
}


.field-invalid .numeric-input,
.field-invalid .number-control,
.field-invalid input,
.field-invalid select {
  border-color: #dc2626 !important;
  box-shadow: 0 0 0 1px rgba(220,38,38,0.08);
}

.field-limit {
  color: #2563eb;
  font-size: 11px;
  font-weight: 600;
}

.field-error {
  color: #dc2626;
  font-size: 11px;
  font-weight: 600;
}

.number-control {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) 42px;
  align-items: stretch;
  height: 42px;
  min-height: 42px;
  border: 1px solid #cfd6df;
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
}

.number-control.has-inline-unit {
  grid-template-columns: 42px minmax(0, 1fr) 76px 42px;
}

.number-control > * {
  height: 100% !important;
  min-height: 100% !important;
}

.numeric-input {
  border: 0 !important;
  border-radius: 0 !important;
  text-align: center;
  padding: 0 8px;
  height: 100% !important;
  min-height: 100% !important;
  box-shadow: none !important;
}

.inline-unit-select {
  border: 0 !important;
  border-left: 1px solid #d7dee7 !important;
  border-right: 1px solid #d7dee7 !important;
  border-radius: 0 !important;
  background: linear-gradient(180deg, #f8fbff, #eef5fb) !important;
  color: #0f4c81;
  font-weight: 700;
  text-align: center;
  padding: 0 20px 0 8px;
  height: 100% !important;
}

.spinner-btn {
  border: 0 !important;
  border-radius: 0 !important;
  width: 100%;
  height: 100% !important;
  min-height: 100% !important;
  padding: 0 !important;
  margin: 0 !important;
  background: linear-gradient(180deg, #f5f7fa, #dfe6ee) !important;
  color: #0f172a !important;
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
  display: flex !important;
  align-items: center;
  justify-content: center;
  border-right: 1px solid #d7dee7 !important;
  user-select: none;
}

.spinner-btn-plus {
  border-right: 0 !important;
  border-left: 1px solid #d7dee7 !important;
}

.spinner-btn:hover {
  background: linear-gradient(180deg, #eef4fb, #d4e2f3);
}

.spinner-btn:active {
  background: linear-gradient(180deg, #d9e7f6, #c3d8ef);
}

.btn-disabled,
button:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}


/* spinner controls must not inherit generic button sizing */
.number-control .spinner-btn {
  flex: none;
  align-self: stretch;
}



/* Premium product card UI */
.premium-card {
  position: relative;
  border: 1px solid #d6e3ef;
  border-radius: 20px;
  padding: 18px;
  background:
    radial-gradient(circle at top right, rgba(29,116,183,0.08), transparent 28%),
    linear-gradient(180deg, #ffffff 0%, #f8fbfe 100%);
  box-shadow: 0 14px 34px rgba(15, 76, 129, 0.10);
}

.premium-card:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(15, 76, 129, 0.14);
}

.result-header-premium {
  margin-bottom: 10px;
}

.series-chip {
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  margin-bottom: 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, #0f4c81, #1d74b7);
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  box-shadow: 0 8px 18px rgba(15, 76, 129, 0.18);
}

.result-title-block .model {
  font-size: 22px;
  font-weight: 800;
  color: #0f172a;
  letter-spacing: -0.02em;
}

.capacity-badge {
  background: linear-gradient(135deg, #0f172a, #1f3f66);
  color: #fff;
  border: 0;
  box-shadow: 0 10px 20px rgba(15, 23, 42, 0.18);
}

.premium-summary-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 4px 0 12px;
}

.summary-pill {
  padding: 7px 10px;
  border-radius: 999px;
  background: #eff6fb;
  border: 1px solid #d4e3f2;
  color: #18486f;
  font-size: 12px;
  font-weight: 700;
}

.summary-pill.emphasis {
  background: linear-gradient(135deg, #e7f3ff, #f3f9ff);
  color: #0f4c81;
}

.premium-image-wrap {
  align-self: stretch;
  min-width: 170px;
}

.product-image-link {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 220px;
  padding: 14px;
  border-radius: 18px;
  border: 1px solid #d9e8f4;
  background: linear-gradient(180deg, #ffffff 0%, #f5fafe 100%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.9);
  text-decoration: none;
}

.product-image-link:hover {
  border-color: #9dc3e5;
  box-shadow: 0 14px 28px rgba(15, 76, 129, 0.12);
}

.product-image-link:hover .result-image {
  transform: scale(1.04);
}

.result-image {
  transition: transform 0.2s ease;
}

.image-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, #0f4c81, #1d74b7);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.image-cta::after {
  content: '↗';
  font-size: 12px;
  line-height: 1;
}

.premium-metrics {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.premium-metrics .metric-cell {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 10px 12px;
  border-radius: 12px;
  background: linear-gradient(180deg, #fbfdff 0%, #f3f8fc 100%);
  border: 1px solid #e0ebf4;
}

.metric-label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #64748b;
}

.metric-value {
  display: block;
  font-size: 18px;
  font-weight: 800;
  color: #0f172a;
}

.premium-actions {
  display: flex;
  justify-content: flex-start;
  margin-top: 14px;
}

.premium-btn {
  height: 38px;
  line-height: 38px;
  padding: 0 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, #0f4c81, #1d74b7);
  box-shadow: 0 10px 20px rgba(15, 76, 129, 0.18);
}

.premium-btn:hover {
  opacity: 1;
  transform: translateY(-1px);
  box-shadow: 0 14px 24px rgba(15, 76, 129, 0.22);
}

@media (max-width: 900px) {
  .premium-image-wrap {
    min-width: 0;
  }

  .product-image-link {
    min-height: 180px;
  }

  .premium-metrics {
    grid-template-columns: 1fr;
  }

  .result-title-block .model {
    font-size: 18px;
  }
}


/* restore premium metric tile label/value structure */
.premium-metrics .metric-label {
  display: block;
}

.premium-metrics .metric-value {
  display: block;
}