:root {
  --uc-bg: #0b1020;
  --uc-panel: #121a33;
  --uc-card: #161f3d;
  --uc-text: #e9efff;
  --uc-dim: #a9b4d6;
  --uc-primary: #2563eb;
  --uc-primary-2: #1d4ed8;
  --uc-border: #26325a;
  --uc-ok: #10b981;
  --uc-shadow: 0 10px 30px rgba(0,0,0,.35);
}

/* Light mode overrides */
body:not(.dark-mode) {
  --uc-bg: #f8f9fa;
  --uc-panel: #ffffff;
  --uc-card: #ffffff;
  --uc-text: #1f2937;
  --uc-dim: #6b7280;
  --uc-primary: #2563eb;
  --uc-primary-2: #1d4ed8;
  --uc-border: #e5e7eb;
  --uc-ok: #10b981;
  --uc-shadow: 0 10px 30px rgba(0,0,0,.08);
}

.uCalc__overlay {
  position: fixed;
  inset: 0;
  background: rgba(5,8,20,.72);
  display: none;
  z-index: 9999;
  backdrop-filter: blur(6px);
}
.uCalc__overlay.is-open {
  display: grid;
  place-items: center;
}

.uCalc__modal {
  width: min(1080px, 92vw);
  max-height: 92vh;
  overflow: hidden;
  background: var(--uc-panel);
  color: var(--uc-text);
  border-radius: 14px;
  box-shadow: var(--uc-shadow);
  display: flex;
  flex-direction: column;
}

.uCalc__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  border-bottom: 1px solid var(--uc-border);
  background: linear-gradient(180deg, #182346, #131b35);
}
.uCalc__header h2 {
  margin: 0;
  font-size: 18px;
  letter-spacing: .3px;
}
.uCalc__close {
  background: transparent;
  border: 1px solid var(--uc-border);
  color: var(--uc-dim);
  width: 36px;
  height: 36px;
  border-radius: 8px;
  cursor: pointer;
}
.uCalc__close:hover {
  color: var(--uc-text);
  border-color: var(--uc-primary);
}

.uCalc__body {
  display: grid;
  grid-template-columns: 1fr 320px;
  min-height: 520px;
}
@media (max-width: 920px) {
  .uCalc__body {
    grid-template-columns: 1fr;
  }
  .uCalc__summary {
    order: 2;
    position: static;
    max-height: none;
  }
}

.uCalc__steps {
  padding: 16px 16px 72px;
  position: relative;
  overflow-y: auto;
  max-height: calc(92vh - 54px);
}
.uCalc__progress {
  margin-bottom: 12px;
}
.uCalc__progressList {
  display: grid;
  grid-template-columns: repeat(6,1fr);
  gap: 6px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.uCalc__progressList li {
  font-size: 12px;
  color: var(--uc-dim);
  text-align: center;
  padding: 8px 6px;
  border: 1px dashed var(--uc-border);
  border-radius: 8px;
}
.uCalc__progressList li.is-active {
  border-style: solid;
  border-color: var(--uc-primary);
  color: var(--uc-text);
  background: var(--uc-primary);
  color: white;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

body:not(.dark-mode) .uCalc__progressList li.is-active {
  background: var(--uc-primary);
  color: white;
}

.uCalc__step {
  display: none;
}
.uCalc__step.is-active {
  display: block;
  animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.uCalc__group {
  margin: 18px 0 12px;
  border: 1px solid var(--uc-border);
  border-radius: 12px;
  padding: 16px;
  background: var(--uc-card);
}

body:not(.dark-mode) .uCalc__group {
  background: #fafafa;
}

.uCalc__legend {
  font-size: 14px;
  color: var(--uc-text);
  margin-bottom: 12px;
  font-weight: 600;
}

.uCalc__grid {
  display: grid;
  grid-template-columns: repeat(2,1fr);
  gap: 10px;
}
.uCalc__grid--sm {
  grid-template-columns: repeat(3,1fr);
}
@media (max-width: 620px) {
  .uCalc__grid {
    grid-template-columns: 1fr;
  }
  .uCalc__grid--sm {
    grid-template-columns: repeat(2,1fr);
  }
}

.uCalc__card {
  display: block;
  border: 2px solid var(--uc-border);
  border-radius: 12px;
  background: var(--uc-panel);
  cursor: pointer;
  position: relative;
  transition: all .2s ease;
}

body:not(.dark-mode) .uCalc__card {
  background: white;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.uCalc__card:hover {
  border-color: var(--uc-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.15);
}

.uCalc__card input {
  position: absolute;
  opacity: 0;
  inset: 0;
  cursor: pointer;
  margin: 0;
}
.uCalc__cardBody {
  display: grid;
  gap: 6px;
  padding: 16px;
  pointer-events: none;
}
.uCalc__cardTitle {
  font-weight: 600;
  color: var(--uc-text);
  font-size: 1rem;
}
.uCalc__cardHint {
  color: var(--uc-dim);
  font-size: 13px;
  line-height: 1.4;
}
.uCalc__card:has(input:checked) {
  border-color: var(--uc-primary);
  background: var(--uc-primary);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.25);
  transform: translateY(-3px);
}

.uCalc__card:has(input:checked) .uCalc__cardTitle {
  color: white;
}

.uCalc__card:has(input:checked) .uCalc__cardHint {
  color: rgba(255,255,255,0.85);
}

.uCalc__card--check:has(input:checked) .uCalc__cardTitle::after {
  content: " ✓";
  color: white;
  font-weight: 700;
}

.uCalc__chip {
  display: inline-grid;
  grid-auto-flow: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--uc-border);
  padding: 8px 10px;
  border-radius: 999px;
  background: #101837;
  cursor: pointer;
  position: relative;
}
.uCalc__chip input {
  position: absolute;
  opacity: 0;
  margin: 0;
}
.uCalc__chip:has(input:checked) {
  border-color: var(--uc-primary);
  box-shadow: 0 0 0 2px rgba(106,162,255,.25) inset;
}

.uCalc__inline {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}
.uCalc__field {
  display: grid;
  gap: 6px;
}
.uCalc__field input[type="number"] {
  background: var(--uc-card);
  border: 1px solid var(--uc-border);
  color: var(--uc-text);
  padding: 8px 10px;
  border-radius: 10px;
  width: 120px;
}

.uCalc__sliderRow {
  display: grid;
  grid-template-columns: 1fr max-content;
  gap: 10px;
  align-items: center;
}
.uCalc__sliderRow input[type="range"] {
  width: 100%;
  accent-color: var(--uc-primary);
}
.uCalc__sliderRow output {
  min-width: 88px;
  text-align: right;
  color: var(--uc-text);
}

.uCalc__footer {
  position: sticky;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(180deg, rgba(18,26,51,0), rgba(18,26,51,.85) 35%, rgba(18,26,51,1) 100%);
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  padding: 12px 16px;
  border-top: 1px solid var(--uc-border);
}
.uCalc__btn {
  appearance: none;
  border: 1px solid var(--uc-border);
  background: #0f1731;
  color: var(--uc-text);
  padding: 10px 14px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
}
.uCalc__btn--primary {
  background: linear-gradient(180deg, var(--uc-primary), var(--uc-primary-2));
  border-color: transparent;
  color: #071327;
}
.uCalc__btn--secondary:hover {
  border-color: var(--uc-primary);
}

.uCalc__summary {
  border-left: 1px solid var(--uc-border);
  background: #0e152e;
  padding: 14px;
  position: sticky;
  top: 0;
  max-height: calc(92vh - 54px);
  overflow: auto;
}
.uCalc__summary h4 {
  margin: 4px 0 10px;
}
.uCalc__summaryList {
  list-style: none;
  padding: 0;
  margin: 0 0 10px;
  display: grid;
  gap: 10px;
}
.uCalc__summaryList li {
  border: 1px solid var(--uc-border);
  border-radius: 10px;
  padding: 10px;
  background: #0f1731;
}
.uCalc__summaryItemLabel {
  display: block;
  font-size: 11px;
  color: var(--uc-dim);
  margin-bottom: 4px;
}
.uCalc__summaryItemValue {
  display: block;
  font-weight: 600;
  line-height: 1.35;
  word-wrap: anywhere;
}

.uCalc__estimate {
  border-top: 1px dashed var(--uc-border);
  padding-top: 10px;
}
.uCalc__estRow {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 6px;
}
#uCalcTotal {
  font-size: 20px;
}

.uCalc__result {
  display: grid;
  gap: 12px;
  border: 1px solid var(--uc-border);
  border-radius: 12px;
  padding: 12px;
  background: #0f1731;
}
.uCalc__ctaRow {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 8px;
}

@media (max-width: 920px) {
  .uCalc__footer {
    position: static;
  }
}