/* ===== WHR Calculator Styles ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --whr-primary: #7c3aed;
  --whr-primary-light: #a78bfa;
  --whr-primary-dark: #5b21b6;
  --whr-bg: #faf5ff;
  --whr-card-bg: #ffffff;
  --whr-text: #1e1b4b;
  --whr-text-muted: #6b7280;
  --whr-border: #e5e7eb;
  --whr-success: #059669;
  --whr-warning: #d97706;
  --whr-danger: #dc2626;
  --whr-radius: 12px;
  --whr-shadow: 0 4px 24px rgba(124, 58, 237, 0.10);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.whr-calc {
  font-family: 'Inter', system-ui, sans-serif;
  max-width: 860px;
  margin: 0 auto;
  padding: 16px;
  color: var(--whr-text);
}

/* ---- CTA Button ---- */
.whr-cta-wrap {
  text-align: center;
}

.whr-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--whr-primary), var(--whr-primary-dark));
  border: none;
  border-radius: 50px;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(124, 58, 237, 0.30);
  transition: transform 0.2s, box-shadow 0.2s;
}

.whr-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(124, 58, 237, 0.40);
}

.whr-cta-btn svg {
  width: 20px;
  height: 20px;
}

/* ---- Calculator Panel ---- */
.whr-panel {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.5s ease, opacity 0.4s ease, margin 0.4s ease;
  margin-top: 0;
}

.whr-panel.open {
  max-height: 500px;
  opacity: 1;
  margin-top: 20px;
}

.whr-card {
  position: relative;
  background: var(--whr-card-bg);
  border-radius: var(--whr-radius);
  box-shadow: var(--whr-shadow);
  padding: 32px 28px 24px;
  border: 1px solid var(--whr-border);
}

/* ---- Close button (inside card, top center) ---- */
.whr-close-btn {
  display: block;
  margin: -8px auto 10px;
  width: 28px;
  height: 28px;
  padding: 0;
  font-size: 18px;
  line-height: 26px;
  text-align: center;
  font-family: inherit;
  color: var(--whr-text-muted);
  background: var(--whr-bg);
  border: 1px solid var(--whr-border);
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, transform 0.15s;
}

.whr-close-btn:hover {
  background: #ede9fe;
  color: var(--whr-primary);
  transform: scale(1.1);
}

/* Hide the big CTA when panel is open */
.whr-cta-wrap.hidden {
  display: none;
}

/* ---- Top Row: title + result ---- */
.whr-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  gap: 12px;
  flex-wrap: wrap;
}

.whr-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--whr-primary-dark);
  letter-spacing: 0.3px;
}


/* ---- Unit Toggle (now in form row) ---- */
.whr-unit-toggle {
  display: flex;
  background: var(--whr-bg);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--whr-border);
  align-self: center;
  flex-shrink: 0;
}

.whr-unit-toggle button {
  padding: 8px 16px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  background: transparent;
  color: var(--whr-text-muted);
  transition: background 0.25s, color 0.25s;
}

.whr-unit-toggle button.active {
  background: var(--whr-primary);
  color: #fff;
}

/* ---- Form Row ---- */
.whr-form-row {
  display: flex;
  align-items: flex-end;
  gap: 14px;
  flex-wrap: wrap;
}

.whr-field {
  flex: 1 1 140px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.whr-field label {
  font-size: 12px;
  font-weight: 600;
  color: var(--whr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

.whr-field input {
  width: 100%;
  padding: 10px 14px;
  font-family: inherit;
  font-size: 15px;
  border: 1.5px solid var(--whr-border);
  border-radius: 8px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  background: var(--whr-bg);
  color: var(--whr-text);
}

.whr-field input:focus {
  border-color: var(--whr-primary-light);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.12);
}

.whr-field input::placeholder {
  color: #b0aecc;
}

.whr-calc-btn {
  flex: 0 0 auto;
  padding: 10px 28px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--whr-primary), var(--whr-primary-dark));
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  white-space: nowrap;
}

.whr-calc-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(124, 58, 237, 0.30);
}

/* ---- Result (inline in header) ---- */
.whr-result {
  padding: 8px 16px;
  border-radius: 10px;
  display: none;
  align-items: center;
  gap: 12px;
  animation: whrFadeIn 0.35s ease;
}

.whr-result.show {
  display: flex;
}

@keyframes whrFadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.whr-result-value {
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
}

.whr-result-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.whr-result-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  opacity: 0.8;
}

.whr-result-category {
  font-size: 15px;
  font-weight: 600;
}

/* Risk colours */
.whr-result.low {
  background: linear-gradient(135deg, #ecfdf5, #d1fae5);
  color: var(--whr-success);
}

.whr-result.moderate {
  background: linear-gradient(135deg, #fffbeb, #fef3c7);
  color: var(--whr-warning);
}

.whr-result.high {
  background: linear-gradient(135deg, #fef2f2, #fecaca);
  color: var(--whr-danger);
}

/* ---- Error ---- */
.whr-error {
  display: none;
  margin-top: 10px;
  padding: 8px 14px;
  font-size: 13px;
  color: var(--whr-danger);
  background: #fef2f2;
  border-radius: 8px;
  border: 1px solid #fecaca;
  animation: whrFadeIn 0.25s ease;
}

.whr-error.show {
  display: block;
}

/* ---- Responsive ---- */
@media (max-width: 480px) {
  .whr-form-row {
    flex-direction: column;
    gap: 12px;
  }

  .whr-calc-btn {
    width: 100%;
    text-align: center;
  }

  .whr-result {
    flex-direction: column;
    text-align: center;
  }
}