.sp-calculator {
  --sp-navy:           #1A1A2E;
  --sp-navy-light:     #252540;
  --sp-blue:           #1A6BFF;
  --sp-blue-light:     #9BB8FF;
  --sp-blue-soft:      #F0F4FF;
  --sp-blue-border:    #D0D8FF;
  --sp-blue-translucent: rgba(26, 107, 255, 0.08);
  --sp-bg:             #FAFAF8;
  --sp-bg-2:           #F0F0EE;
  --sp-border:         #E8E8E8;
  --sp-border-muted:   #EDEDED;
  --sp-text:           #333333;
  --sp-muted:          #666666;
  --sp-subtle:         #888888;
  --sp-dim:            #AAAAAA;
  --sp-success:        #2BAA4F;
  font-family: 'DM Sans', system-ui, -apple-system, sans-serif;
  color: var(--sp-text);
  max-width: 1140px;
  margin: 32px auto;
  line-height: 1.6;
}

/* ============ HERO ============ */
.sp-calc__hero {
  position: relative;
  background: var(--sp-navy);
  color: #fff;
  padding: 56px 56px 48px;
  border-radius: 16px 16px 0 0;
  overflow: hidden;
}
.sp-calc__hero-decor {
  position: absolute;
  top: 0;
  right: 0;
  width: 480px;
  height: 100%;
  pointer-events: none;
}
.sp-calc__circle {
  position: absolute;
  border-radius: 50%;
}
.sp-calc__circle--1 {
  width: 380px;
  height: 380px;
  top: -120px;
  right: -120px;
  background: radial-gradient(circle at 30% 30%, rgba(26, 107, 255, 0.22), rgba(26, 107, 255, 0.04) 70%);
}
.sp-calc__circle--2 {
  width: 260px;
  height: 260px;
  top: 60px;
  right: 100px;
  background: radial-gradient(circle at 30% 30%, rgba(26, 107, 255, 0.16), rgba(26, 107, 255, 0.02) 70%);
}
.sp-calc__hero-content {
  position: relative;
  z-index: 1;
  max-width: 680px;
}
.sp-calc__eyebrow {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 16px;
}
.sp-calc__title {
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: 48px;
  font-weight: 400;
  line-height: 1.12;
  color: #fff;
  margin: 0 0 20px;
  letter-spacing: -0.01em;
}
.sp-calc__title-line1 { color: #fff; }
.sp-calc__title-accent {
  color: var(--sp-blue-light);
  font-style: italic;
}
.sp-calc__title-tail { color: #fff; }
.sp-calc__tagline {
  font-size: 17px;
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.72);
  margin: 0 0 24px;
  max-width: 540px;
}
.sp-calc__trust {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 99px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.75);
}
.sp-calc__trust-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--sp-success);
  box-shadow: 0 0 0 3px rgba(43, 170, 79, 0.2);
  flex-shrink: 0;
}

/* ============ GRID ============ */
.sp-calc__grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  background: #fff;
  border: 1px solid var(--sp-border);
  border-top: none;
  border-radius: 0 0 16px 16px;
  overflow: hidden;
}
@media (max-width: 820px) {
  .sp-calc__grid { grid-template-columns: 1fr; }
}

/* ============ CONTROLS (LEFT SIDEBAR) ============ */
.sp-calc__controls {
  background: var(--sp-bg);
  padding: 32px 28px;
  border-right: 1px solid var(--sp-border);
}
@media (max-width: 820px) {
  .sp-calc__controls {
    border-right: none;
    border-bottom: 1px solid var(--sp-border);
  }
}
.sp-calc__section-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--sp-subtle);
  margin: 0 0 24px;
}
.sp-calc__field { margin-bottom: 24px; }
.sp-calc__label {
  display: block;
  font-weight: 600;
  font-size: 15px;
  color: var(--sp-navy);
  margin-bottom: 4px;
}
.sp-calc__hint {
  font-size: 12px;
  color: var(--sp-muted);
  margin: 0 0 10px;
  line-height: 1.45;
}

/* Stepper */
.sp-calc__stepper {
  display: inline-flex;
  align-items: stretch;
  border: 1px solid var(--sp-border);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
}
.sp-calc__stepper input {
  width: 56px;
  border: none;
  border-left: 1px solid var(--sp-border);
  border-right: 1px solid var(--sp-border);
  padding: 10px 0;
  text-align: center;
  font-size: 16px;
  font-weight: 600;
  color: var(--sp-navy);
  font-family: inherit;
  -moz-appearance: textfield;
}
.sp-calc__stepper input::-webkit-outer-spin-button,
.sp-calc__stepper input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.sp-calc__step {
  background: none;
  border: none;
  padding: 0 14px;
  cursor: pointer;
  font-size: 18px;
  font-weight: 500;
  color: var(--sp-muted);
  line-height: 1;
  transition: background 0.15s;
}
.sp-calc__step:hover { background: var(--sp-bg-2); }

/* Yes/No toggles */
.sp-calc__toggle {
  display: inline-flex;
  border: 1px solid var(--sp-border);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
}
.sp-calc__toggle-btn {
  background: #fff;
  border: none;
  padding: 10px 24px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  color: var(--sp-muted);
  font-family: inherit;
  min-width: 64px;
  transition: background 0.15s, color 0.15s;
}
.sp-calc__toggle-btn:hover { background: var(--sp-bg-2); }
.sp-calc__toggle-btn--active {
  background: var(--sp-navy);
  color: #fff;
}
.sp-calc__toggle-btn--active:hover { background: var(--sp-navy); }

/* ============ RESULTS (RIGHT) ============ */
.sp-calc__results {
  padding: 32px 36px 28px;
  background: #fff;
}
.sp-calc__results-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

/* Monthly/Annual period toggle */
.sp-calc__period-toggle {
  display: inline-flex;
  border: 1px solid var(--sp-border);
  border-radius: 99px;
  overflow: hidden;
  background: var(--sp-bg);
  padding: 3px;
}
.sp-calc__period-btn {
  background: none;
  border: none;
  padding: 7px 18px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  color: var(--sp-muted);
  font-family: inherit;
  border-radius: 99px;
  transition: background 0.15s, color 0.15s;
}
.sp-calc__period-btn--active {
  background: var(--sp-blue);
  color: #fff;
}

/* ============ CARDS ============ */
.sp-calc__cards {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.sp-calc__card {
  position: relative;
  background: #fff;
  border: 1px solid var(--sp-border-muted);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.sp-calc__card--best {
  border-color: var(--sp-blue);
  border-width: 2px;
  box-shadow: 0 4px 20px rgba(26, 107, 255, 0.08);
}
.sp-calc__card--disabled {
  opacity: 0.55;
  background: var(--sp-bg);
}
.sp-calc__card-inner {
  position: relative;
  padding: 22px 28px;
}

/* Head row: dot + product name */
.sp-calc__card-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.sp-calc__card-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.sp-calc__card-title {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.sp-calc__product {
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: 22px;
  font-weight: 400;
  color: var(--sp-navy);
  line-height: 1.1;
}
.sp-calc__plan {
  font-size: 13px;
  color: var(--sp-muted);
}

/* BEST VALUE badge */
.sp-calc__best-badge {
  position: absolute;
  top: 22px;
  right: 28px;
  background: var(--sp-blue);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 6px 14px;
  border-radius: 99px;
  text-transform: uppercase;
}

/* Stats row — horizontal grid */
.sp-calc__card-stats {
  display: grid;
  grid-template-columns: 1fr 1fr 1.4fr 1fr;
  gap: 16px;
  align-items: center;
}
@media (max-width: 680px) {
  .sp-calc__card-stats {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
}
.sp-calc__stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.sp-calc__stat-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--sp-dim);
}
.sp-calc__stat-value {
  font-size: 18px;
  font-weight: 600;
  color: var(--sp-text);
}
.sp-calc__stat-value--total {
  font-family: 'DM Serif Display', Georgia, serif;
  font-weight: 400;
  font-size: 40px;
  color: var(--sp-blue);
  line-height: 1;
}
.sp-calc__stat--vs .sp-calc__stat-value {
  font-size: 15px;
  font-weight: 600;
  color: var(--sp-muted);
}

/* Winner card progress bar along the bottom edge */
.sp-calc__card-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--sp-blue);
}

/* Unsupported state inside disabled card */
.sp-calc__card-unsupported {
  padding: 4px 0 2px;
  font-size: 14px;
  color: var(--sp-muted);
  font-style: italic;
}

/* ============ SAVINGS BANNER ============ */
.sp-calc__savings {
  margin-top: 20px;
  padding: 14px 18px;
  background: var(--sp-blue-soft);
  border: 1px solid var(--sp-blue-border);
  border-radius: 8px;
  font-size: 14px;
  color: var(--sp-navy);
}
.sp-calc__savings:empty { display: none; }

/* ============ FOOTNOTE ============ */
.sp-calc__footnote {
  margin-top: 16px;
  font-size: 12px;
  color: var(--sp-subtle);
  line-height: 1.5;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 640px) {
  .sp-calc__hero {
    padding: 40px 24px 32px;
  }
  .sp-calc__title {
    font-size: 34px;
  }
  .sp-calc__tagline {
    font-size: 15px;
  }
  .sp-calc__controls,
  .sp-calc__results {
    padding: 24px 20px;
  }
  .sp-calc__card-inner {
    padding: 20px;
  }
  .sp-calc__best-badge {
    top: 20px;
    right: 20px;
  }
  .sp-calc__stat-value--total {
    font-size: 32px;
  }
}