.calculator-section {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background:
    radial-gradient(circle at 82% 36%, rgba(57, 117, 235, 0.2), transparent 32%),
    linear-gradient(135deg, #1c2a3d 0%, #111b2a 72%, #0d1421 100%);
}

.calculator-section::before {
  position: absolute;
  z-index: -1;
  left: -16rem;
  bottom: -17rem;
  width: min(55vw, 48rem);
  aspect-ratio: 1;
  pointer-events: none;
  content: "";
  opacity: 0.18;
  background: url("../../assets/zift_helmet.svg") center / contain no-repeat;
  filter: blur(15px);
  transform: rotate(12deg);
}

.calculator-intro {
  position: relative;
  display: grid;
  min-height: 34rem;
  grid-template-columns: minmax(14rem, 0.8fr) minmax(0, 1.2fr);
  align-items: center;
  overflow: hidden;
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-xl);
  background: rgba(7, 14, 26, 0.42);
  box-shadow: var(--brand-shadow);
}

.calculator-intro-worker {
  position: relative;
  align-self: stretch;
  min-width: 0;
  animation: hero-worker-enter 1.4s cubic-bezier(0.2, 0.8, 0.2, 1) 150ms both;
}

.calculator-intro-worker::before {
  position: absolute;
  z-index: -1;
  top: 50%;
  left: 50%;
  width: min(28rem, 125%);
  aspect-ratio: 1;
  border-radius: 50%;
  content: "";
  background: rgba(52, 121, 255, 0.3);
  filter: blur(45px);
  transform: translate(-50%, -50%);
}

.calculator-intro-worker img {
  display: block;
  width: min(32rem, 130%);
  height: 100%;
  margin-left: -12%;
  object-fit: contain;
}

.calculator-intro-content {
  position: relative;
  z-index: 1;
  max-width: 45rem;
  padding: clamp(2rem, 6vw, 5rem) clamp(2rem, 6vw, 5rem) clamp(2rem, 6vw, 5rem) 0;
}

.calculator-intro-tag {
  display: inline-flex;
  margin-bottom: 1.25rem;
  padding: 0.45rem 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-pill);
  color: var(--brand-white);
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.calculator-intro h2 {
  font-size: clamp(2.5rem, 4.5vw, 4.5rem);
}

.calculator-intro-content > p:not(.calculator-intro-tag) {
  max-width: 37rem;
  margin-top: 1.25rem;
  color: #d7e0ed;
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  line-height: 1.65;
}

.calculator-intro-cta {
  position: relative;
  margin-top: 2rem;
  padding: 1rem 1.4rem;
  border-radius: var(--radius-pill);
  color: var(--brand-white);
  background: linear-gradient(135deg, #5a8ef5 0%, #3975eb 100%);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  box-shadow: 0 8px 24px rgba(57, 117, 235, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.2);
  transition: all var(--transition-base);
}

.calculator-intro-cta:hover {
  background: linear-gradient(135deg, #6a9aff 0%, #4a85f5 100%);
  box-shadow: 0 12px 32px rgba(57, 117, 235, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.calculator-intro-cta:active {
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(57, 117, 235, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.calculator-intro-cta span {
  display: inline-block;
  margin-left: 0.4rem;
  transition: transform var(--transition-base);
}

.calculator-intro-cta:hover span {
  transform: translateX(0.25rem);
}

.calculator-flow-heading h2 {
  font-size: clamp(2.25rem, 4vw, 3.5rem);
}

.calculator-flow-heading p {
  color: var(--brand-text-muted);
}

#calculatorCard {
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-xl);
  color: var(--brand-text);
  background: linear-gradient(135deg, rgba(40, 50, 70, 0.96), rgba(18, 26, 40, 0.96));
  box-shadow: var(--brand-shadow);
}

#calculatorCard .text-slate-600,
#calculatorCard .text-slate-500 {
  color: var(--brand-text-muted);
}

#calculatorCard .text-orange-600 {
  color: #78a9ff;
}

#calculatorProgress {
  background: #4f82e8;
}

#calculatorNext,
#calculatorOpenQuoteForm,
#calculatorQuoteStep button[type="submit"] {
  position: relative;
  background: linear-gradient(135deg, #5a8ef5 0%, #3975eb 100%);
  box-shadow: 0 8px 24px rgba(57, 117, 235, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.2);
  transition: all var(--transition-base);
}

#calculatorNext:hover,
#calculatorOpenQuoteForm:hover,
#calculatorQuoteStep button[type="submit"]:hover {
  background: linear-gradient(135deg, #6a9aff 0%, #4a85f5 100%);
  box-shadow: 0 12px 32px rgba(57, 117, 235, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

#calculatorNext:active,
#calculatorOpenQuoteForm:active,
#calculatorQuoteStep button[type="submit"]:active {
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(57, 117, 235, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

#calculatorNext:disabled {
  cursor: wait;
  opacity: 0.72;
}

#calculatorReset {
  color: var(--brand-white);
  background: rgba(120, 169, 255, 0.08);
  border: 1.5px solid rgba(120, 169, 255, 0.3);
  box-shadow: 0 4px 12px rgba(57, 117, 235, 0.12);
  transition: all var(--transition-base);
}

#calculatorReset:hover {
  color: #78a9ff;
  background: rgba(120, 169, 255, 0.14);
  border-color: rgba(120, 169, 255, 0.5);
  box-shadow: 0 8px 20px rgba(57, 117, 235, 0.18);
  transform: translateY(-1px);
}

#calculatorReset:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(57, 117, 235, 0.12);
}

#calculatorQuoteStep {
  border: 1px solid rgba(153, 190, 255, 0.4) !important;
  border-radius: 20px;
  background: linear-gradient(145deg, rgba(56, 66, 88, 0.9), rgba(28, 38, 58, 0.92)) !important;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

#calculatorQuoteStep h3 {
  color: var(--brand-text);
}

#calculatorQuoteStep .text-slate-600,
#calculatorQuoteStep .text-slate-700,
#calculatorQuoteStep .text-slate-800 {
  color: rgba(229, 237, 250, 0.92) !important;
}

#calculatorQuoteStep input[type="text"],
#calculatorQuoteStep input[type="tel"],
#calculatorQuoteStep input[type="email"],
#calculatorQuoteStep textarea {
  border-color: rgba(179, 205, 255, 0.22) !important;
  color: var(--brand-text);
  background: rgba(11, 21, 36, 0.84) !important;
}

#calculatorQuoteStep input[type="text"]::placeholder,
#calculatorQuoteStep input[type="tel"]::placeholder,
#calculatorQuoteStep input[type="email"]::placeholder,
#calculatorQuoteStep textarea::placeholder {
  color: rgba(185, 204, 234, 0.62);
}

#calculatorQuoteStep textarea {
  min-height: 7.5rem;
  resize: vertical;
}

#calculatorQuoteStep input[type="checkbox"] {
  accent-color: #78a9ff;
}

#calculatorQuoteStep label.flex {
  border-color: rgba(179, 205, 255, 0.22) !important;
  background: rgba(13, 24, 40, 0.5);
}

#calculatorQuoteStep a {
  color: #a8c8ff;
  text-decoration: underline;
  text-underline-offset: 2px;
}

#calculatorQuoteBack {
  color: var(--brand-text) !important;
  border-color: rgba(159, 192, 255, 0.5) !important;
  background: rgba(120, 169, 255, 0.08);
}

#calculatorQuoteBack:hover {
  background: rgba(120, 169, 255, 0.16);
  border-color: rgba(175, 207, 255, 0.75) !important;
}

#calculatorQuoteStep button:focus-visible,
#calculatorQuoteStep input:focus-visible,
#calculatorQuoteStep textarea:focus-visible,
#calculatorQuoteStep a:focus-visible {
  outline: 2px solid #9dc0ff;
  outline-offset: 2px;
}

.calculator-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  margin-top: 1.25rem;
  color: #b9d1ff;
  font-size: 0.9rem;
  font-weight: 700;
}

.calculator-loading.hidden {
  display: none;
}

.calculator-loading span {
  width: 1rem;
  height: 1rem;
  border: 2px solid rgba(185, 209, 255, 0.28);
  border-top-color: #b9d1ff;
  border-radius: 50%;
  animation: calculator-spinner 0.75s linear infinite;
}

@keyframes calculator-spinner {
  to {
    transform: rotate(360deg);
  }
}

#calculatorCard input,
#calculatorCard select {
  border-color: rgba(255, 255, 255, 0.18);
  color: var(--brand-text);
  background: rgba(8, 17, 29, 0.72);
}

#calculatorCard option {
  color: #08111d;
  background: var(--brand-white);
}

#calculatorCard .service-card,
#calculatorCard #formworkOption,
#calculatorCard #antiEvaporationOption {
  border-color: rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.04);
}

#calculatorCard .service-card:hover,
.service-card.active {
  border-color: #78a9ff;
  background-color: rgba(120, 169, 255, 0.12);
  box-shadow: 0 12px 30px rgba(36, 111, 255, 0.16);
}

#calculatorCard .bg-orange-50,
#calculatorCard .bg-white {
  background: rgba(255, 255, 255, 0.08);
}

#serviceInfo {
  color: rgba(229, 237, 250, 0.96) !important;
  border: 1px solid rgba(168, 200, 255, 0.26);
  background: rgba(120, 169, 255, 0.12) !important;
}

#serviceInfo i,
#serviceInfo svg {
  color: #9dc0ff !important;
}

@media (max-width: 767px) {
  .calculator-section::before {
    left: -13rem;
    bottom: -9rem;
    width: 31rem;
    opacity: 0.1;
  }

  .calculator-intro {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .calculator-intro-worker {
    display: none;
  }

  .calculator-intro-content {
    padding: 2rem 2rem 2.5rem;
  }

  #calculatorCta {
    margin-top: 1.5rem !important;
    gap: 1rem !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .calculator-intro-worker,
  .calculator-intro-worker img {
    animation: none;
  }

  .calculator-loading span {
    animation: none;
  }
}