/* ========================================
   MVP Cost Calculator Styles
   ======================================== */

.calc {
  min-height: 100vh;
  padding: calc(var(--nav-height) + var(--space-2xl)) var(--card-padding) var(--space-2xl);
}

.calc__inner {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--card-padding);
  max-width: 1100px;
  margin: 0 auto;
}

/* --- Wizard Panel --- */
.calc__wizard {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  padding: var(--space-2xl);
}

.calc__progress {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-2xl);
}

.calc__progress-dot {
  flex: 1;
  height: 4px;
  border-radius: 2px;
  background: rgba(0, 0, 0, 0.1);
  transition: background 0.3s ease;
}

.calc__progress-dot.active {
  background: var(--color-accent-orange);
}

.calc__progress-dot.done {
  background: var(--color-text-dark);
}

.calc__step {
  display: none;
}

.calc__step.active {
  display: block;
}

.calc__step-label {
  font-size: 13px;
  color: var(--color-text-muted-dark);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-xs);
}

.calc__step-title {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.calc__step-desc {
  font-size: 15px;
  color: var(--color-text-muted-dark);
  margin-bottom: var(--space-xl);
}

/* Option cards for single-select */
.calc__options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.calc__option {
  background: var(--color-bg);
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  padding: var(--space-lg) var(--space-md);
  cursor: pointer;
  transition: border-color 0.2s ease, transform 0.15s ease;
  text-align: center;
}

.calc__option:hover {
  transform: translateY(-1px);
}

.calc__option.selected {
  border-color: var(--color-accent-orange);
}

.calc__option-icon {
  font-size: 28px;
  margin-bottom: var(--space-xs);
}

.calc__option-label {
  font-size: 15px;
  font-weight: 600;
}

.calc__option-desc {
  font-size: 13px;
  color: var(--color-text-muted-dark);
  margin-top: 4px;
}

/* Multi-select checkboxes */
.calc__checks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xs);
}

.calc__check {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--color-bg);
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  padding: var(--space-md);
  cursor: pointer;
  transition: border-color 0.2s ease;
  font-size: 14px;
  font-weight: 500;
}

.calc__check:hover {
  border-color: rgba(0, 0, 0, 0.15);
}

.calc__check.selected {
  border-color: var(--color-accent-orange);
}

.calc__check-box {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  border: 2px solid rgba(0, 0, 0, 0.2);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease, border-color 0.2s ease;
  font-size: 0;
  line-height: 1;
}

.calc__check-box svg {
  width: 12px;
  height: 12px;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.calc__check.selected .calc__check-box {
  background: var(--color-accent-orange);
  border-color: var(--color-accent-orange);
}

.calc__check.selected .calc__check-box svg {
  opacity: 1;
}

/* Navigation buttons */
.calc__nav {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-xl);
}

.calc__btn {
  font-family: var(--font-primary);
  font-size: 15px;
  font-weight: 500;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.calc__btn:hover {
  transform: scale(1.02);
}

.calc__btn--back {
  background: transparent;
  color: var(--color-text-muted-dark);
}

.calc__btn--next {
  background: var(--color-bg-dark);
  color: var(--color-text-light);
  margin-left: auto;
}

.calc__btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

/* Email step */
.calc__email-input {
  width: 100%;
  font-family: var(--font-primary);
  font-size: 16px;
  padding: 14px 16px;
  border: 2px solid rgba(0, 0, 0, 0.1);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  outline: none;
  transition: border-color 0.2s ease;
}

.calc__email-input:focus {
  border-color: var(--color-accent-orange);
}

/* --- Sticky Preview Panel --- */
.calc__preview {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-lg));
  background: var(--color-bg-dark);
  border-radius: var(--radius-md);
  padding: var(--space-2xl);
  color: var(--color-text-light);
  align-self: start;
}

.calc__preview-title {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted-light);
  margin-bottom: var(--space-lg);
}

.calc__preview-item {
  display: flex;
  justify-content: space-between;
  padding: var(--space-sm) 0;
  font-size: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.calc__preview-label {
  color: rgba(255, 255, 255, 0.5);
}

.calc__preview-value {
  font-weight: 600;
}

.calc__preview-total {
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.calc__preview-total-label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: var(--space-xs);
}

.calc__preview-total-range {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 500;
}

/* --- Results Page --- */
.calc__results {
  display: none;
  grid-column: 1 / -1;
}

.calc__results.active {
  display: block;
}

.calc__results-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.calc__results-title {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.calc__results-subtitle {
  font-size: 16px;
  color: var(--color-text-muted-dark);
}

.calc__results-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--card-padding);
  margin-bottom: var(--space-2xl);
}

.calc__result-card {
  border-radius: var(--radius-md);
  padding: var(--space-2xl);
  text-align: center;
}

.calc__result-card--trad {
  background: var(--color-bg-card);
}

.calc__result-card--dp {
  background: var(--color-accent-orange);
  color: var(--color-text-light);
}

.calc__result-label {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-md);
  opacity: 0.7;
}

.calc__result-range {
  font-family: var(--font-display);
  font-size: 42px;
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.calc__result-timeline {
  font-size: 15px;
  opacity: 0.7;
}

.calc__result-detail {
  font-size: 15px;
  opacity: 0.8;
}

.calc__result-savings {
  text-align: center;
  font-size: 18px;
  font-weight: 500;
  margin-bottom: var(--space-2xl);
  color: var(--color-accent-orange);
}

/* Process / How it Works */
.calc__process {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  padding: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.calc__process-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 500;
  text-align: center;
  margin-bottom: var(--space-xl);
}

.calc__process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.calc__process-step {
  text-align: center;
}

.calc__process-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-bg);
  margin-bottom: var(--space-sm);
  color: var(--color-text-dark);
}

.calc__process-step-title {
  font-family: var(--font-primary);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.calc__process-step-desc {
  font-size: 13px;
  color: var(--color-text-muted-dark);
  line-height: 1.5;
}

.calc__results-cta {
  text-align: center;
}

.calc__results-cta .btn {
  margin: 0 var(--space-xs);
}

/* --- Responsive --- */
@media (max-width: 810px) {
  .calc__inner {
    grid-template-columns: 1fr;
  }

  .calc__preview {
    position: relative;
    top: 0;
    order: -1;
  }

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

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

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

  .calc__result-range {
    font-size: 32px;
  }

  .calc__step-title {
    font-size: 22px;
  }

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

  .calc__results-cta .btn {
    display: block;
    width: 100%;
    margin: 0 0 var(--space-sm);
  }
}