/* ═══════════════════════════════════════════════════
   Approach 2 — Text-Based Single-Page Calculator
   ═══════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,600;0,700;1,400&family=DM+Sans:wght@400;500;600;700&display=swap');

:root {
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-ui: 'DM Sans', 'Segoe UI', system-ui, sans-serif;
}

body {
  font-family: var(--font-ui);
  background: #F9F8F5;
  padding-bottom: 100px; /* Space for sticky bar */
}

/* ─── PAGE LAYOUT ─── */
.calc-page {
  max-width: 680px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 3rem;
}

.calc-page__title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--color-primary-dark);
  margin-bottom: 0.25rem;
}

.calc-page__subtitle {
  color: var(--color-text-light);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

/* ─── FORM SECTIONS ─── */
.calc-section {
  background: #fff;
  border: 1px solid #ECEAE4;
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1rem;
  transition: border-color 0.2s ease;
}

.calc-section:focus-within {
  border-color: rgba(197, 153, 58, 0.35);
}

.calc-section.completed {
  border-left: 3px solid var(--color-primary);
}

.calc-section__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.calc-section__number {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: #ECEAE4;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
  transition: all 0.2s ease;
}

.calc-section.completed .calc-section__number {
  background: var(--color-primary);
  color: #fff;
}

.calc-section__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  flex: 1;
  margin-left: 0.75rem;
}

.calc-section__badge {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-secondary-dark);
  background: rgba(197, 153, 58, 0.08);
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
}

/* ─── SELECT DROPDOWNS ─── */
.calc-select-wrap {
  position: relative;
}

.calc-select {
  width: 100%;
  padding: 0.7rem 2.5rem 0.7rem 0.9rem;
  border: 2px solid #E8E6E0;
  border-radius: 8px;
  font-size: 0.92rem;
  font-family: var(--font-ui);
  color: var(--color-text);
  background: #fff;
  appearance: none;
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.calc-select:focus {
  outline: none;
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(197, 153, 58, 0.12);
}

.calc-select option[value=""] {
  color: var(--color-text-muted);
}

.calc-select-wrap::after {
  content: '';
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid var(--color-text-muted);
  pointer-events: none;
}

.calc-select__desc {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.35rem;
  min-height: 1.2em;
  line-height: 1.4;
}

/* ─── NUMBER INPUT ─── */
.calc-number-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.calc-number-input {
  flex: 1;
  max-width: 180px;
  padding: 0.7rem 0.9rem;
  border: 2px solid #E8E6E0;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  font-family: var(--font-display);
  color: var(--color-primary-dark);
  text-align: center;
  background: #fff;
  transition: border-color 0.2s ease;
}

.calc-number-input:focus {
  outline: none;
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(197, 153, 58, 0.12);
}

.calc-number-unit {
  font-size: 0.88rem;
  color: var(--color-text-light);
}

.calc-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.75rem;
}

.calc-preset {
  padding: 0.35rem 0.7rem;
  border: 1px solid #E0DDD5;
  border-radius: 6px;
  background: #fff;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  transition: all 0.15s ease;
}

.calc-preset:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary-dark);
}

.calc-preset.active {
  background: var(--color-secondary);
  border-color: var(--color-secondary);
  color: #fff;
}

/* ─── ADD-ON CHECKBOXES ─── */
.calc-addons-hint {
  font-size: 0.82rem;
  color: var(--color-text-light);
  margin-bottom: 0.75rem;
}

.calc-addons {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.calc-addon {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  border: 2px solid #ECEAE4;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.calc-addon:hover {
  border-color: var(--color-secondary-light);
  background: #FDFCFA;
}

.calc-addon.checked {
  border-color: var(--color-secondary);
  background: rgba(197, 153, 58, 0.04);
}

.calc-addon input[type="checkbox"] {
  display: none;
}

.calc-addon__check {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border: 2px solid #D0CDC5;
  border-radius: 4px;
  margin-top: 1px;
  position: relative;
  transition: all 0.2s ease;
}

.calc-addon.checked .calc-addon__check {
  border-color: var(--color-secondary);
  background: var(--color-secondary);
}

.calc-addon.checked .calc-addon__check::after {
  content: '\2713';
  position: absolute;
  top: -2px;
  left: 1px;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
}

.calc-addon__text {
  flex: 1;
  min-width: 0;
}

.calc-addon__title {
  display: block;
  font-weight: 600;
  color: var(--color-primary-dark);
  font-size: 0.88rem;
  line-height: 1.3;
}

.calc-addon__desc {
  display: block;
  font-size: 0.78rem;
  color: var(--color-text-light);
  margin-top: 1px;
  line-height: 1.4;
}

.calc-addon__cost {
  flex-shrink: 0;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-secondary-dark);
  padding: 0.15rem 0.45rem;
  background: rgba(197, 153, 58, 0.08);
  border-radius: 4px;
  margin-top: 1px;
  white-space: nowrap;
}

/* ─── OPTIONAL PERIMETER ─── */
.calc-optional {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px dashed #E8E6E0;
}

.calc-optional__label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--color-text-light);
  cursor: pointer;
}

.calc-optional__label input[type="checkbox"] {
  accent-color: var(--color-secondary);
}

.calc-optional__field {
  display: none;
  margin-top: 0.5rem;
}

.calc-optional__field.visible {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.calc-optional__input {
  width: 100px;
  padding: 0.5rem 0.6rem;
  border: 2px solid #E8E6E0;
  border-radius: 6px;
  font-size: 0.92rem;
  text-align: center;
}

.calc-optional__input:focus {
  outline: none;
  border-color: var(--color-secondary);
}

/* ─── STICKY PRICE BAR ─── */
.sticky-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-primary-dark);
  color: #fff;
  padding: 0;
  z-index: 200;
  transform: translateY(0);
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
}

.sticky-bar.incomplete {
  background: #4A4749;
}

.sticky-bar__inner {
  max-width: 680px;
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.sticky-bar__label {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
}

.sticky-bar__price {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-secondary-light);
  white-space: nowrap;
}

.sticky-bar__price .sep {
  color: rgba(255, 255, 255, 0.35);
  font-size: 0.7em;
  margin: 0 0.2em;
}

.sticky-bar__incomplete {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

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

.sticky-bar__btn {
  padding: 0.45rem 1rem;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.15s ease;
}

.sticky-bar__btn--details {
  background: rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.85);
}

.sticky-bar__btn--details:hover {
  background: rgba(255, 255, 255, 0.2);
}

.sticky-bar__btn--copy {
  background: var(--color-secondary);
  color: #fff;
}

.sticky-bar__btn--copy:hover {
  background: var(--color-secondary-dark);
}

/* ─── DETAILS PANEL (expandable from sticky bar) ─── */
.details-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  background: var(--color-primary);
}

.details-panel.open {
  max-height: 600px;
}

.details-panel__inner {
  max-width: 680px;
  margin: 0 auto;
  padding: 1rem 1.5rem 1.25rem;
}

.details-panel__row {
  display: flex;
  justify-content: space-between;
  padding: 0.4rem 0;
  font-size: 0.85rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.details-panel__row:last-child {
  border-bottom: none;
}

.details-panel__label {
  color: rgba(255, 255, 255, 0.55);
}

.details-panel__amount {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.details-panel__disclaimer {
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.35);
  font-style: italic;
  margin-top: 0.75rem;
  line-height: 1.4;
}

/* ─── RESPONSIVE ─── */
@media (max-width: 600px) {
  .calc-page {
    padding: 1rem 1rem 3rem;
  }

  .calc-section {
    padding: 1.25rem 1rem;
  }

  .sticky-bar__inner {
    flex-wrap: wrap;
    padding: 0.75rem 1rem;
  }

  .sticky-bar__price {
    font-size: 1.25rem;
  }

  .sticky-bar__label {
    width: 100%;
    margin-bottom: -0.25rem;
  }

  .sticky-bar__actions {
    width: 100%;
    margin-top: 0.5rem;
  }

  .sticky-bar__btn {
    flex: 1;
    text-align: center;
  }
}