/* ============================================================
   IELTS Band Score Calculator
   ============================================================ */

.calc-hero {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 24px 24px;
  text-align: center;
}

.calc-hero .lp-eyebrow {
  margin-bottom: 10px;
}

.calc-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.6vw, 36px);
  margin: 6px 0 10px;
  color: #fff;
}

.calc-hero .lp-sub {
  color: var(--ink-faint);
  font-size: 14px;
  max-width: 52ch;
  margin: 0 auto;
}

.calc-wrap {
  max-width: 560px;
  margin: 0 auto;
  padding: 4px 24px 64px;
}

.calc-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 24px;
  box-shadow: var(--shadow-2);
}

.calc-tabs {
  display: flex;
  gap: 6px;
  background: var(--paper);
  border-radius: var(--radius-sm);
  padding: 4px;
  margin-bottom: 18px;
}

.calc-tab {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--ink-soft);
  font-family: inherit;
  font-weight: 600;
  font-size: 14px;
  padding: 9px 10px;
  border-radius: 6px;
  cursor: pointer;
}

.calc-tab.active {
  background: var(--navy-btn);
  color: #fff;
}

.calc-variant {
  margin-bottom: 18px;
}

.calc-variant-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
  margin-bottom: 8px;
}

.calc-variant-toggle {
  display: flex;
  gap: 8px;
}

.calc-variant-btn {
  flex: 1;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink-soft);
  font-family: inherit;
  font-weight: 600;
  font-size: 13px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.calc-variant-btn.active {
  border-color: var(--brand);
  background: var(--brand-soft);
  color: var(--brand);
}

.calc-field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.calc-field-hint {
  font-weight: 400;
  color: var(--ink-faint);
}

.calc-field input[type="number"] {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  background: var(--paper);
  color: var(--ink);
  margin-bottom: 10px;
}

.calc-field input[type="number"]:focus {
  outline: 2px solid var(--focus);
  outline-offset: 1px;
}

.calc-field input[type="range"] {
  width: 100%;
  accent-color: var(--brand);
}

.calc-result {
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px dashed var(--line-strong);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.calc-result-band {
  width: 112px;
  height: 112px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #c98a2c, var(--band) 70%);
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow:
    0 6px 16px rgba(161, 106, 15, 0.4),
    inset 0 0 0 3px rgba(255, 255, 255, 0.35);
  margin-bottom: 12px;
}

.calc-result-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 32px;
  line-height: 1;
}

.calc-result-lbl {
  display: block;
  width: 56px;
  font-size: 8.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-align: center;
  line-height: 1.3;
  margin-top: 5px;
}

.calc-result-detail {
  font-size: 13px;
  color: var(--ink-soft);
  margin: 0;
}

.calc-error {
  margin-top: 16px;
  background: var(--bad-soft);
  color: var(--bad);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 13px;
}

.calc-table-wrap {
  margin-top: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 18px;
}

.calc-table-wrap summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 13.5px;
  color: var(--ink);
}

.calc-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 14px;
  font-size: 13px;
}

.calc-table th, .calc-table td {
  text-align: left;
  padding: 6px 8px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
}

.calc-table th {
  color: var(--ink-faint);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.03em;
}

.calc-row-active {
  background: var(--band-soft);
  font-weight: 700;
  color: var(--band);
}

.calc-fineprint {
  font-size: 12px;
  color: var(--ink-faint);
  margin-top: 18px;
  line-height: 1.6;
}

.calc-cta {
  margin-top: 32px;
  background: var(--navy-btn);
  color: #fff;
  border-radius: 14px;
  padding: 26px 24px;
  text-align: center;
}

.calc-cta h2 {
  font-family: var(--font-display);
  font-size: 20px;
  margin: 0 0 8px;
}

.calc-cta p {
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.75);
  margin: 0 0 16px;
}

@media (max-width: 480px) {
  .calc-hero { padding-top: 84px; }
  .calc-card { padding: 18px; }
}