:root {
  --bg: #f4f8fc;
  --surface: rgba(255, 255, 255, 0.94);
  --surface-strong: #ffffff;
  --line: rgba(12, 42, 82, 0.12);
  --line-strong: rgba(12, 42, 82, 0.22);
  --text: #16253b;
  --text-soft: #5f6f84;
  --brand: #0a3871;
  --brand-dark: #07264d;
  --brand-soft: #dfeaf8;
  --accent: #f0b34b;
  --accent-strong: #d58c14;
  --success: #1fa971;
  --danger: #d94141;
  --shadow-soft: 0 18px 46px rgba(8, 31, 61, 0.1);
  --shadow-strong: 0 28px 90px rgba(7, 26, 51, 0.18);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --container: 1100px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(10, 56, 113, 0.12), transparent 28%),
    radial-gradient(circle at top right, rgba(240, 179, 75, 0.12), transparent 22%),
    linear-gradient(180deg, #fbfdff 0%, var(--bg) 48%, #f7fbff 100%);
}

[hidden] {
  display: none !important;
}

button,
input,
select,
textarea {
  font: inherit;
}

.calculator-shell {
  min-height: 100vh;
  padding-bottom: 7rem;
}

.honeypot-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.calculator-topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(10, 56, 113, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 14px 32px rgba(7, 26, 51, 0.18);
}

.calculator-topbar__inner {
  width: min(calc(100% - 1.5rem), var(--container));
  margin: 0 auto;
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.calculator-brand {
  display: inline-flex;
  flex-direction: column;
  color: #ffffff;
  text-decoration: none;
  line-height: 1.1;
}

.calculator-brand strong {
  font-size: 1rem;
}

.calculator-brand span {
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.8rem;
}

.calculator-topbar__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.calculator-topbar__link {
  color: rgba(255, 255, 255, 0.88);
  text-decoration: none;
  font-weight: 700;
}

.calculator-hero {
  position: relative;
  overflow: hidden;
  color: #ffffff;
  background:
    linear-gradient(120deg, rgba(7, 26, 51, 0.84), rgba(10, 56, 113, 0.62) 56%, rgba(11, 26, 48, 0.76) 100%),
    url("../img/hero.jpg") center/cover no-repeat;
}

.calculator-hero::before,
.calculator-hero::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  pointer-events: none;
}

.calculator-hero::before {
  width: 420px;
  height: 420px;
  top: -150px;
  right: -120px;
  background: radial-gradient(circle, rgba(240, 179, 75, 0.34), transparent 68%);
}

.calculator-hero::after {
  width: 320px;
  height: 320px;
  left: -110px;
  bottom: -120px;
  background: radial-gradient(circle, rgba(31, 169, 113, 0.18), transparent 72%);
}

.calculator-hero__inner,
.calculator-main {
  width: min(calc(100% - 1.5rem), var(--container));
  margin: 0 auto;
}

.calculator-hero__inner {
  position: relative;
  z-index: 1;
  padding: 3rem 0 2.8rem;
}

.calculator-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 2rem;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 0.8rem;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.18);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.calculator-hero h1 {
  margin: 0;
  max-width: 11ch;
  line-height: 0.97;
  letter-spacing: -0.05em;
  font-size: clamp(2.2rem, 4.4vw, 4rem);
}

.hero-lead {
  max-width: 34rem;
  margin: 1.2rem 0 0;
  line-height: 1.6;
  color: rgba(239, 245, 252, 0.92);
  font-size: clamp(1rem, 1.25vw, 1.12rem);
}

.language-switcher {
  display: inline-flex;
  gap: 0.3rem;
  padding: 0.25rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(10px);
}

.language-switcher__button {
  min-width: 3rem;
  min-height: 2.4rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: rgba(255, 255, 255, 0.82);
  font-weight: 800;
  cursor: pointer;
}

.language-switcher__button.is-active {
  background: #ffffff;
  color: var(--brand-dark);
  box-shadow: 0 10px 20px rgba(11, 53, 66, 0.18);
}

.hero-points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.95rem;
  margin-top: 2rem;
}

.hero-point {
  display: grid;
  gap: 0.35rem;
  padding: 1rem 1.1rem;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.09);
  border: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(8px);
}

.hero-point strong {
  color: #ffffff;
  font-size: 1.02rem;
}

.hero-point span {
  color: rgba(239, 245, 252, 0.8);
}

.hero-panel {
  padding: 1.7rem;
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: var(--shadow-strong);
  backdrop-filter: blur(12px);
  transform: translateY(10px);
}

.hero-panel-label {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.78);
}

.hero-price {
  font-size: clamp(2.6rem, 4vw, 4rem);
  font-weight: 800;
  line-height: 1;
  margin: 0.7rem 0 0.8rem;
  letter-spacing: -0.04em;
}

.hero-panel-copy {
  margin: 0;
  color: rgba(239, 245, 252, 0.82);
  line-height: 1.6;
}

.hero-mini-list {
  display: grid;
  gap: 0.8rem;
  margin-top: 1.25rem;
}

.hero-mini-item {
  padding: 0.95rem 1rem;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

.calculator-main {
  padding: 1.4rem 0 0;
}

.floating-band {
  margin-top: -2rem;
  position: relative;
  z-index: 4;
}

.floating-band__inner {
  width: min(calc(100% - 1.5rem), var(--container));
  margin: 0 auto;
}

.band-card {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  padding: 1.2rem;
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(12, 42, 82, 0.1);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(14px);
}

.band-item {
  padding: 1rem;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(236, 244, 252, 0.94));
  border: 1px solid rgba(10, 56, 113, 0.08);
}

.band-item strong {
  display: block;
  color: var(--brand);
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}

.band-item span {
  color: var(--text-soft);
  line-height: 1.6;
}

.card,
.status-banner {
  border-radius: var(--radius-xl);
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(10px);
}

.card + .card,
.card + .status-banner,
.status-banner + .card {
  margin-top: 1rem;
}

.card--intro,
.card--form {
  padding: 1.3rem;
}

.card__grid {
  display: grid;
  gap: 1rem;
}

.intro-highlight-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.15rem;
}

.intro-highlight {
  padding: 1.25rem;
  border-radius: 24px;
  background:
    radial-gradient(circle at top right, rgba(240, 179, 75, 0.12), transparent 26%),
    linear-gradient(135deg, rgba(10, 56, 113, 0.06), rgba(255, 255, 255, 0.98));
  border: 1px solid rgba(10, 56, 113, 0.08);
}

.intro-highlight--dark {
  background:
    radial-gradient(circle at 88% 12%, rgba(240, 179, 75, 0.22), transparent 22%),
    linear-gradient(135deg, rgba(10, 56, 113, 0.96), rgba(7, 38, 77, 0.92));
  box-shadow: 0 22px 52px rgba(7, 26, 51, 0.18);
}

.intro-highlight__kicker {
  display: inline-flex;
  padding: 0.28rem 0.6rem;
  border-radius: 999px;
  margin-bottom: 0.8rem;
  background: rgba(10, 56, 113, 0.08);
  color: var(--brand);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.intro-highlight strong {
  display: block;
  color: var(--brand);
  font-size: 1.18rem;
  letter-spacing: -0.03em;
  margin-bottom: 0.45rem;
}

.intro-highlight p {
  margin: 0;
  color: var(--text-soft);
  line-height: 1.65;
}

.intro-highlight--dark .intro-highlight__kicker {
  background: rgba(255, 255, 255, 0.14);
  color: #f8d16c;
}

.intro-highlight--dark strong {
  color: #ffffff;
}

.intro-highlight--dark p {
  color: rgba(255, 255, 255, 0.76);
}

.card--intro h2,
.card--form h2 {
  margin: 0;
  color: var(--brand);
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  letter-spacing: -0.03em;
}

.card--intro p,
.step-head p,
.field span,
.summary-list,
.intro-points,
.status-banner p,
.summary-copy {
  line-height: 1.65;
}

.intro-points {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--text-soft);
}

.status-banner {
  width: min(calc(100% - 1.5rem), var(--container));
  margin: 1rem auto 0;
  padding: 1rem 1.1rem;
}

.status-banner--success {
  background: linear-gradient(180deg, #ecfff4 0%, #ffffff 100%);
  border-color: rgba(31, 169, 113, 0.2);
  color: #155d37;
}

.status-banner--error {
  background: linear-gradient(180deg, #fff0ef 0%, #ffffff 100%);
  border-color: rgba(217, 65, 65, 0.2);
  color: #8b2f2b;
}

.form-notice {
  margin-bottom: 1rem;
  padding: 0.95rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(217, 65, 65, 0.18);
  background: linear-gradient(180deg, rgba(255, 240, 239, 0.96), #ffffff);
  color: #8b2f2b;
  font-weight: 700;
}

.progress-block {
  margin-bottom: 1.5rem;
}

.progress-block__head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.6rem;
  color: var(--text-soft);
  font-size: 0.92rem;
  font-weight: 700;
}

.progress-track {
  width: 100%;
  height: 12px;
  border-radius: 999px;
  background: #dfe8f2;
  overflow: hidden;
}

.progress-track span {
  display: block;
  width: 33.333%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--brand), var(--success));
  transition: width 220ms ease;
}

.progress-steps {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  margin-top: 0.8rem;
  font-size: 0.84rem;
}

.progress-step {
  color: var(--text-soft);
  font-weight: 700;
}

.progress-step.is-active {
  color: var(--brand);
}

.form-step {
  display: none;
}

.form-step.is-active {
  display: block;
}

.step-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  align-items: start;
  margin-bottom: 1rem;
}

.step-head h2 {
  margin-bottom: 0.3rem;
}

.step-head p {
  margin: 0;
  color: var(--text-soft);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 3rem;
  min-height: 3rem;
  margin: 0;
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(10, 56, 113, 0.12), rgba(240, 179, 75, 0.16));
  color: var(--brand);
  font-size: 1rem;
  font-weight: 800;
}

.choice-grid,
.field-grid {
  display: grid;
  gap: 1rem;
}

.choice-card {
  display: block;
}

.choice-card input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.choice-card__content,
.addon-item,
.summary-box {
  display: block;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface-strong);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.choice-card__content strong,
.addon-item strong {
  display: block;
  margin-bottom: 0.3rem;
  font-size: 1.02rem;
  color: var(--brand);
}

.choice-card__content span,
.addon-item small,
.summary-copy {
  color: var(--text-soft);
}

.choice-card__eyebrow {
  display: block;
  margin-bottom: 0.55rem;
  font-size: 0.82rem;
  line-height: 1.45;
}

.choice-card__details {
  display: block;
  margin-top: 0.45rem;
  line-height: 1.5;
}

.choice-card input:checked + .choice-card__content,
.choice-card__content:hover,
.addon-item:hover {
  border-color: rgba(10, 56, 113, 0.35);
  transform: translateY(-3px);
  box-shadow: 0 16px 32px rgba(16, 55, 69, 0.08);
}

.choice-card input:checked + .choice-card__content {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(236, 244, 252, 0.96));
}

.addon-list {
  display: grid;
  gap: 0.8rem;
}

.addon-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem;
  align-items: start;
  cursor: pointer;
}

.addon-item input {
  margin-top: 0.2rem;
  inline-size: 1.15rem;
  block-size: 1.15rem;
  accent-color: var(--brand);
}

.field {
  display: grid;
  gap: 0.45rem;
}

.field--full {
  margin-top: 1rem;
}

.field span {
  font-size: 0.95rem;
  font-weight: 700;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 3.25rem;
  padding: 0.85rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #ffffff;
  color: var(--text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field textarea {
  min-height: 8.5rem;
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: rgba(10, 56, 113, 0.42);
  box-shadow: 0 0 0 0.22rem rgba(10, 56, 113, 0.08);
}

.field input.is-invalid,
.field select.is-invalid,
.field textarea.is-invalid {
  border-color: rgba(217, 65, 65, 0.5);
  background: rgba(255, 248, 248, 0.98);
  box-shadow: 0 0 0 0.18rem rgba(217, 65, 65, 0.08);
}

.field-error {
  display: block;
  color: var(--danger);
  font-size: 0.88rem;
  font-weight: 700;
}

.summary-box {
  margin-top: 1rem;
  background: linear-gradient(180deg, #f8fbff 0%, #ffffff 100%);
}

.summary-box--accent {
  background:
    radial-gradient(circle at top right, rgba(240, 179, 75, 0.16), transparent 30%),
    linear-gradient(135deg, rgba(10, 56, 113, 0.06), rgba(255, 255, 255, 0.98));
}

.summary-box h3 {
  margin: 0 0 0.6rem;
  color: var(--brand);
}

.summary-copy {
  margin: 0;
}

.summary-list {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--text-soft);
}

.summary-list li + li {
  margin-top: 0.45rem;
}

.form-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: space-between;
  margin-top: 1.25rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.15rem;
  padding: 0.9rem 1.3rem;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 800;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button--primary {
  background:
    radial-gradient(circle at 20% 20%, rgba(240, 179, 75, 0.18), transparent 28%),
    linear-gradient(135deg, var(--brand), var(--brand-dark));
  color: #ffffff;
  box-shadow: 0 18px 28px rgba(10, 56, 113, 0.24);
}

.button--ghost {
  background: #ffffff;
  color: var(--brand);
  border: 1px solid rgba(10, 56, 113, 0.18);
}

.budget-sticky {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 20;
  padding: 0.85rem 0.95rem calc(0.85rem + env(safe-area-inset-bottom));
  background:
    radial-gradient(circle at 90% 12%, rgba(240, 179, 75, 0.22), transparent 24%),
    rgba(7, 26, 51, 0.96);
  backdrop-filter: blur(12px);
  box-shadow: 0 -18px 30px rgba(7, 23, 29, 0.18);
}

.budget-sticky__inner {
  width: min(calc(100% - 0.2rem), var(--container));
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  color: #ffffff;
}

.budget-sticky__label {
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.88rem;
  font-weight: 700;
}

.budget-sticky__value {
  font-size: clamp(1.4rem, 6vw, 2rem);
  letter-spacing: -0.03em;
  color: #ffe7ad;
}

@media (min-width: 720px) {
  .card__grid,
  .choice-grid,
  .field-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .form-actions {
    justify-content: flex-end;
  }

  .button {
    min-width: 10.5rem;
  }
}

@media (min-width: 980px) {
  .card--form,
  .card--intro {
    padding: 1.5rem;
  }
}

@media (max-width: 719px) {
  .calculator-shell {
    padding-bottom: 8rem;
  }

  .calculator-topbar__inner,
  .calculator-topbar__actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .calculator-topbar__inner {
    padding: 0.8rem 0;
  }

  .calculator-hero__inner {
    padding: 2rem 0 2.4rem;
  }

  .calculator-hero__grid,
  .hero-points,
  .band-card,
  .intro-highlight-grid {
    grid-template-columns: 1fr;
  }

  .form-actions {
    flex-direction: column-reverse;
  }

  .button {
    width: 100%;
  }
}