/* ===== Variables ===== */
:root {
  --color-bg: #f5f2ee;
  --color-bg-alt: #e8e4de;
  --color-surface: #fff;
  --color-dark: #2c2825;
  --color-text: #3d3935;
  --color-text-muted: #6b6560;
  --color-accent: #8b6914;
  --color-accent-hover: #6d5210;
  --color-border: #d4cfc8;
  --color-success: #4a7c59;
  --font-sans: 'Manrope', system-ui, sans-serif;
  --font-display: 'Playfair Display', Georgia, serif;
  --container: min(1120px, 100% - 2rem);
  --radius: 8px;
  --shadow: 0 4px 20px rgba(44, 40, 37, 0.08);
  --shadow-lg: 0 8px 40px rgba(44, 40, 37, 0.12);
  --transition: 0.2s ease;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  padding-top: 4rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent-hover); }

button {
  font-family: var(--font-sans);
  border: none;
  cursor: pointer;
}

/* ===== Layout ===== */
.container {
  width: var(--container);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1rem;
  padding-right: 1rem;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.header__inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 4rem;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--color-dark);
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-left: auto;
}

.nav a {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.875rem;
  letter-spacing: 0.02em;
  transition: color var(--transition);
}

.nav a:hover {
  color: var(--color-accent);
}

/* ===== Hero Section ===== */
.calc-hero {
  background: linear-gradient(135deg, rgba(139, 105, 20, 0.05) 0%, rgba(232, 228, 222, 0.3) 100%);
  padding: 4rem 1rem;
  text-align: center;
  margin-bottom: 3rem;
}

.calc-hero__content {
  max-width: 600px;
  margin: 0 auto;
}

.calc-hero__title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 5vw, 2.5rem);
  font-weight: 700;
  margin: 0 0 0.5rem 0;
  color: var(--color-dark);
  line-height: 1.2;
}

.calc-hero__subtitle {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* ===== Calculator ===== */
.calculator {
  background: var(--color-surface);
  padding: 2rem 1rem;
  margin-bottom: 3rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.calculator__visualization {
  margin-bottom: 2rem;
}

.viz-container {
  position: relative;
  width: 100%;
  height: 400px;
  background: rgba(20, 20, 30, 0.5);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

#canvas3d {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}

#canvas3d:active {
  cursor: grabbing;
}

.viz-hint {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  font-size: 0.85rem;
  color: rgba(0, 255, 150, 0.6);
  font-family: 'Manrope', monospace;
  pointer-events: none;
}

/* ─── Animation playback ───────────────────────────────────────────── */
.viz-play-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.9rem;
  background: rgba(15, 20, 28, 0.78);
  border: 1px solid rgba(0, 255, 150, 0.35);
  border-radius: 6px;
  color: rgba(0, 255, 150, 0.85);
  font-family: 'Manrope', system-ui, sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
}
.viz-play-btn:hover {
  background: rgba(0, 255, 150, 0.18);
  border-color: rgba(0, 255, 150, 0.6);
}
.viz-play-btn:active { transform: scale(0.97); }
.viz-play-btn[hidden] { display: none; }
.viz-play-btn__icon { font-size: 0.85rem; }

.viz-anim-overlay {
  position: absolute;
  top: 1rem;
  left: 1rem;
  right: 1rem;
  padding: 0.85rem 1rem 0.9rem;
  background: rgba(10, 14, 22, 0.85);
  border: 1px solid rgba(0, 255, 150, 0.35);
  border-radius: 8px;
  color: #fff;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  font-family: 'Manrope', system-ui, sans-serif;
  pointer-events: auto;
}
.viz-anim-overlay__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.25rem;
}
.viz-anim-overlay__phase { color: rgba(0, 255, 150, 0.85); }
.viz-anim-overlay__step  { color: rgba(255, 255, 255, 0.45); }
.viz-anim-overlay__title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.viz-anim-overlay__desc {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.65);
  margin-top: 0.15rem;
  line-height: 1.4;
}
.viz-anim-overlay__bar {
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  margin-top: 0.65rem;
  overflow: hidden;
}
.viz-anim-overlay__fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, rgba(0, 255, 150, 0.85), rgba(0, 255, 150, 0.45));
  transition: width 0.1s linear;
}
.viz-anim-overlay__skip {
  position: absolute;
  top: 0.5rem;
  right: 0.6rem;
  background: none;
  border: 0;
  color: rgba(255, 255, 255, 0.5);
  font-family: inherit;
  font-size: 0.72rem;
  cursor: pointer;
  padding: 0.15rem 0.35rem;
}
.viz-anim-overlay__skip:hover { color: rgba(0, 255, 150, 0.9); }
.viz-anim-overlay[hidden] { display: none; }

.calculator__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

.calculator__form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.calculator__result {
  position: sticky;
  top: 6rem;
}

@media (max-width: 900px) {
  .calculator__visualization {
    margin-bottom: 1.5rem;
  }

  .viz-container {
    height: auto;
    aspect-ratio: 3 / 4;
  }

  .calculator__inner {
    grid-template-columns: 1fr;
  }

  .calculator__result {
    position: static;
  }
}

/* ===== Form Group ===== */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.form-label {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-dark);
  letter-spacing: 0.01em;
}

/* ===== Input ===== */
.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.form-input {
  width: 100%;
  padding: 0.875rem 1rem;
  padding-right: 3.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(139, 105, 20, 0.1);
}

.input-suffix {
  position: absolute;
  right: 1rem;
  font-weight: 500;
  color: var(--color-text-muted);
  pointer-events: none;
}

.form-hint {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: -0.5rem;
}

.form-help {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  border-left: 2px solid var(--color-border);
  padding: 0.5rem 0 0.5rem 0.75rem;
  margin-top: 0.25rem;
}

.form-help summary {
  cursor: pointer;
  color: var(--color-accent);
  font-weight: 500;
  list-style: none;
  user-select: none;
}

.form-help summary::-webkit-details-marker { display: none; }

.form-help summary::before {
  content: "▸ ";
  display: inline-block;
  transition: transform 0.15s ease;
  color: var(--color-accent);
}

.form-help[open] summary::before {
  transform: rotate(90deg);
}

.form-help p {
  margin: 0.5rem 0 0 0;
  line-height: 1.5;
}

/* ===== Range Slider ===== */
.form-range {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--color-border);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  margin: 0.5rem 0;
}

.form-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-accent);
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition);
}

.form-range::-webkit-slider-thumb:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 0 0 6px rgba(139, 105, 20, 0.15);
}

.form-range::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-accent);
  border: none;
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition);
}

.form-range::-moz-range-thumb:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 0 0 6px rgba(139, 105, 20, 0.15);
}

.form-range::-moz-range-track {
  border: none;
  background: transparent;
}

.form-range::-moz-range-progress {
  background: var(--color-accent);
  height: 6px;
  border-radius: 3px;
}

.range-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

/* ===== Quick Price ===== */
.quick-price {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(135deg, rgba(139, 105, 20, 0.08) 0%, rgba(232, 228, 222, 0.2) 100%);
  padding: 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  margin-top: 1rem;
}

.quick-price__label {
  font-weight: 600;
  color: var(--color-dark);
}

.quick-price__value {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-accent);
}

/* ===== Radio Group ===== */
.radio-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.radio-item {
  display: flex;
  align-items: flex-start;
  cursor: pointer;
}

.radio-item input {
  margin-right: 1rem;
  margin-top: 0.375rem;
  cursor: pointer;
  accent-color: var(--color-accent);
  width: 20px;
  height: 20px;
}

.radio-label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex: 1;
}

.radio-label strong {
  font-weight: 600;
  color: var(--color-dark);
}

.radio-label small {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.radio-label em {
  font-style: normal;
  font-weight: 700;
  color: var(--color-accent);
  margin-top: 0.25rem;
}

/* ===== Checkbox Group ===== */
.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.checkbox-item {
  display: flex;
  align-items: flex-start;
  cursor: pointer;
  padding: 0.75rem;
  border-radius: var(--radius);
  transition: background var(--transition);
}

.checkbox-item:hover {
  background: var(--color-bg-alt);
}

.checkbox-item input {
  margin-right: 1rem;
  margin-top: 0.375rem;
  cursor: pointer;
  accent-color: var(--color-accent);
  width: 20px;
  height: 20px;
}

.checkbox-label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex: 1;
}

.checkbox-label strong {
  font-weight: 600;
  color: var(--color-dark);
}

.checkbox-label small {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.checkbox-item em {
  font-style: normal;
  font-weight: 700;
  color: var(--color-accent);
  margin-top: 0.25rem;
  margin-left: auto;
}

/* ===== Result Card ===== */
.result-card {
  background: linear-gradient(135deg, #fafaf8 0%, var(--color-surface) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  font-size: 1rem;
}

.result-label {
  color: var(--color-text);
  font-weight: 500;
}

.result-value {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-accent);
}

.result-divider {
  height: 1px;
  background: var(--color-border);
  margin: 1rem 0;
}

.result-row--discount {
  color: var(--color-success);
}

.result-value--discount {
  color: var(--color-success);
}

.result-row--total {
  padding: 1rem 0;
  font-size: 1.2rem;
}

.result-value--total {
  font-size: 1.5rem;
  color: var(--color-accent);
}

.result-note {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin: 1.5rem 0 1.5rem 0;
  line-height: 1.5;
}

.services-breakdown {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin: 0.5rem 0;
}

.service-item {
  display: flex;
  justify-content: space-between;
  font-size: 0.95rem;
  padding: 0.5rem 0;
  color: var(--color-text);
}

.service-item-price {
  font-weight: 600;
  color: var(--color-accent);
}

/* ===== Buttons ===== */
.btn {
  padding: 0.875rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  text-align: center;
  letter-spacing: 0.01em;
  transition: all var(--transition);
  display: inline-block;
}

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

.btn--primary:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 4px 12px rgba(139, 105, 20, 0.3);
}

.btn--outline {
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
}

.btn--outline:hover {
  border-color: var(--color-accent-hover);
  color: var(--color-accent-hover);
}

.btn--full {
  width: 100%;
}

.result-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.download-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  transition: border-color var(--transition);
}

.download-row:hover {
  border-color: var(--color-accent);
}

.download-row__label {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-text);
}

.download-row__formats {
  display: flex;
  gap: 0.35rem;
}

.format-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  padding: 0.4rem 0.75rem;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-accent);
  background: rgba(139, 105, 20, 0.08);
  border: 1px solid rgba(139, 105, 20, 0.25);
  border-radius: 999px;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.format-pill:hover {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

/* ===== Sticky bottom bar ===== */
.sticky-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -4px 20px rgba(44, 40, 37, 0.08);
  z-index: 90;
  transform: translateY(100%);
  transition: transform 0.3s ease;
  padding: 0.75rem 1rem calc(0.75rem + env(safe-area-inset-bottom)) 1rem;
}

.sticky-bar.is-visible {
  transform: translateY(0);
}

.sticky-bar__inner {
  width: var(--container);
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.sticky-bar__price {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  min-width: 0;
  background: none;
  border: none;
  padding: 0.25rem 0.5rem 0.25rem 0;
  margin: 0;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  border-radius: var(--radius);
  transition: background var(--transition);
}

.sticky-bar__price:hover {
  background: rgba(139, 105, 20, 0.06);
}

.sticky-bar__chevron {
  display: inline-block;
  transition: transform 0.25s ease;
  font-size: 0.7em;
  color: var(--color-accent);
  margin-left: 0.15rem;
}

.sticky-bar__price[aria-expanded="true"] .sticky-bar__chevron {
  transform: rotate(180deg);
}

.sticky-bar__label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.sticky-bar__value {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-dark);
  white-space: nowrap;
}

.sticky-bar__actions {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

.sticky-bar__btn {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  border-radius: var(--radius);
  padding: 0.65rem 1rem;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-sans);
  white-space: nowrap;
  min-height: 44px;
}

.sticky-bar__btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.sticky-bar__btn--icon {
  padding: 0.5rem 0.75rem;
  font-size: 1.1rem;
}

.sticky-bar__btn--primary {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

.sticky-bar__btn--primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: white;
}

/* Сдвиг футера, чтобы sticky-bar не перекрывал контент */
.sticky-bar.is-visible ~ .footer,
body:has(.sticky-bar.is-visible) .cta-section {
  padding-bottom: 6rem;
}

@media (max-width: 480px) {
  .sticky-bar__btn--primary {
    padding: 0.65rem 0.85rem;
  }
  .sticky-bar__value {
    font-size: 1.1rem;
  }
}

@media print {
  .sticky-bar { display: none; }
}

/* ===== Sticky sheet (popup above sticky bar) ===== */
.sticky-sheet {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 1rem;
  right: 1rem;
  max-width: 420px;
  margin: 0 auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  box-shadow: 0 12px 40px rgba(44, 40, 37, 0.18);
  padding: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  animation: sheetSlideUp 0.2s ease;
}

.sticky-sheet[hidden] {
  display: none;
}

@keyframes sheetSlideUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.sticky-sheet__item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.85rem 0.9rem;
  border: none;
  background: none;
  border-radius: 8px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--color-text);
  text-align: left;
  text-decoration: none;
  transition: background var(--transition);
  width: 100%;
}

.sticky-sheet__item:hover {
  background: var(--color-bg);
}

.sticky-sheet__item--multi {
  cursor: default;
}

.sticky-sheet__item--multi:hover {
  background: transparent;
}

.sticky-sheet__formats {
  display: flex;
  gap: 0.35rem;
  flex-shrink: 0;
  margin-left: auto;
}

.sticky-sheet__icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(139, 105, 20, 0.1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
}

.sticky-sheet__text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
  min-width: 0;
}

.sticky-sheet__text strong {
  font-weight: 600;
  color: var(--color-dark);
  font-size: 0.95rem;
}

.sticky-sheet__text small {
  color: var(--color-text-muted);
  font-size: 0.8rem;
  margin-top: 2px;
}

/* ===== Info Section ===== */
.info-section {
  padding: 3rem 1rem;
  background: var(--color-surface);
  margin-bottom: 3rem;
  border-radius: var(--radius);
}

.info-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin: 0 0 2rem 0;
  color: var(--color-dark);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.info-card {
  text-align: center;
}

.info-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.info-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 0.5rem 0;
  color: var(--color-dark);
}

.info-card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(135deg, rgba(139, 105, 20, 0.08) 0%, rgba(232, 228, 222, 0.3) 100%);
  padding: 3rem 1rem;
  text-align: center;
  border-radius: var(--radius);
}

.cta-section h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  margin: 0 0 0.5rem 0;
  color: var(--color-dark);
}

.cta-section p {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin: 0 0 2rem 0;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.footer {
  background: var(--color-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 2rem 1rem;
  margin-top: 3rem;
  border-top: 1px solid rgba(0, 0, 0, 0.2);
}

.footer__inner {
  text-align: center;
}

.footer__copy {
  margin: 0;
  font-size: 0.9rem;
}

.footer__copy a {
  color: rgba(255, 255, 255, 0.9);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  body {
    padding-top: 3.5rem;
  }

  .header__inner {
    gap: 1rem;
    height: 3.5rem;
  }

  .logo {
    font-size: 1rem;
  }

  .nav {
    display: none;
  }

  .calc-hero__title {
    font-size: 1.5rem;
  }

  .calc-hero {
    padding: 2rem 1rem;
    margin-bottom: 2rem;
  }

  .calculator {
    padding: 1.5rem 1rem;
    margin-bottom: 2rem;
  }

  .result-card {
    padding: 1.5rem;
  }

  .cta-buttons {
    flex-direction: column;
  }

  .cta-buttons a {
    width: 100%;
  }

  .info-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .cta-section {
    padding: 2rem 1rem;
  }

  .cta-section h2 {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .calculator__form {
    gap: 1rem;
  }

  .radio-item,
  .checkbox-item {
    align-items: center;
  }

  .radio-item input,
  .checkbox-item input {
    margin-top: 0;
  }

  .result-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .result-value {
    font-size: 1.2rem;
  }

  .result-value--total {
    font-size: 1.3rem;
  }
}