.calc {
  min-height: 100vh;
  background: var(--color-bg-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) var(--space-4);
}

.calc__card {
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: var(--space-10) var(--space-8);
  width: 100%;
  max-width: 540px;
}

/* Progress */
.calc__progress {
  margin-bottom: var(--space-8);
}

.calc__progress-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-3);
}

.calc__progress-label {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.4);
  font-weight: 500;
}

.calc__progress-bar {
  height: 2px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 99px;
  overflow: hidden;
}

.calc__progress-fill {
  height: 100%;
  background: #fff;
  border-radius: 99px;
  transition: width 0.4s ease;
}

/* Step content */
.calc__step {
  display: none;
  flex-direction: column;
}

.calc__step.active {
  display: flex;
  animation: calcFadeIn 0.25s ease;
}

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

.calc__title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-2);
  line-height: 1.35;
}

.calc__subtitle {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: var(--space-8);
  line-height: 1.6;
}

/* Options */
.calc__options {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.calc__option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: rgba(255, 255, 255, 0.04);
  border: 1.5px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  text-align: left;
  font-family: inherit;
  color: #fff;
}

.calc__option:hover {
  border-color: rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.06);
}

.calc__option.selected {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.calc__option-content {
  flex: 1;
}

.calc__option-label {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.calc__option-desc {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.4);
  line-height: 1.5;
}

.calc__option-radio {
  width: 19px;
  height: 19px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition);
}

.calc__option.selected .calc__option-radio {
  border-color: #fff;
  background: #fff;
}

.calc__option-radio svg {
  display: none;
}

.calc__option.selected .calc__option-radio svg {
  display: block;
}

/* Contact form */
.calc__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.calc__input {
  width: 100%;
  padding: var(--space-3) 0;
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 0.9375rem;
  font-family: inherit;
  outline: none;
  transition: border-color var(--transition);
}

.calc__input::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.calc__input:focus {
  border-bottom-color: rgba(255, 255, 255, 0.6);
}

/* Buttons */
.calc__actions {
  display: flex;
  gap: var(--space-3);
}

.calc__btn-next {
  flex: 1;
  padding: var(--space-3) var(--space-6);
  background: #fff;
  color: var(--color-text);
  border: none;
  border-radius: var(--radius-full);
  font-size: 0.9375rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
}

.calc__btn-next:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.calc__btn-next:disabled {
  opacity: 0.3;
  cursor: default;
  transform: none;
}

.calc__btn-back {
  padding: var(--space-3) var(--space-5);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-full);
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.875rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: background var(--transition);
}

.calc__btn-back:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Result */
.calc__result {
  text-align: center;
}

.calc__result-tag {
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.35);
  font-weight: 500;
  margin-bottom: var(--space-3);
}

.calc__result-price {
  font-size: 3.5rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: var(--space-2);
}

.calc__result-price span {
  font-size: 1.375rem;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.35);
  margin-left: var(--space-1);
}

.calc__result-note {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.25);
  margin-bottom: var(--space-8);
}

.calc__result-type {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: var(--space-8);
  padding: var(--space-3) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.calc__btn-book {
  display: block;
  width: 100%;
  padding: var(--space-4);
  background: #fff;
  color: var(--color-text);
  border: none;
  border-radius: var(--radius-full);
  font-size: 0.9375rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
  text-align: center;
  text-decoration: none;
  margin-bottom: var(--space-3);
}

.calc__btn-book:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.calc__btn-restart {
  display: block;
  width: 100%;
  padding: var(--space-3);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-full);
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.875rem;
  font-family: inherit;
  cursor: pointer;
  transition: background var(--transition);
}

.calc__btn-restart:hover {
  background: rgba(255, 255, 255, 0.06);
}

/* Footer text (inside card, above progress) */
.calc__footer {
  text-align: center;
  margin-bottom: var(--space-6);
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.35);
}

/* Responsive */
@media (max-width: 480px) {
  .calc {
    padding: var(--space-4) var(--space-3);
    align-items: flex-start;
    padding-top: 100px;
  }

  .calc__card {
    padding: var(--space-6) var(--space-4);
  }

  .calc__title {
    font-size: 1.1rem;
  }

  .calc__result-price {
    font-size: 2.5rem;
  }

  .calc__actions {
    flex-direction: column;
  }
}