/* ===== Child Height Predictor ===== */

.ch-panels > [class*='col-'] {
  display: flex;
  flex-direction: column;
}

.ch-panel {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-width: 0;
}

.ch-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  flex: 1 1 auto;
}

.ch-seg {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.ch-seg-btn {
  flex: 1 1 120px;
  padding: 10px 12px;
  border: 1.5px solid var(--border, #cbd5e1);
  border-radius: 10px;
  background: var(--bg-card, #fff);
  color: var(--text, #0f172a);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.ch-seg-btn:hover {
  border-color: var(--accent, #0284c7);
  color: var(--accent, #0284c7);
}

.ch-seg-btn.is-active {
  background: var(--accent, #0284c7);
  border-color: var(--accent, #0284c7);
  color: #fff;
}

.ch-field-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.ch-field-row .ch-cm-inputs {
  flex: 1 1 auto;
  min-width: 0;
}

.ch-field-row .ch-ft-inputs {
  display: flex;
  gap: 8px;
  flex: 1 1 auto;
  min-width: 0;
}

.ch-ft-inputs.hidden,
.ch-cm-inputs.hidden {
  display: none;
}

.ch-num.ch-ft {
  flex: 1 1 55%;
}

.ch-num.ch-in {
  flex: 1 1 45%;
}

.ch-unit-tag {
  flex: 0 0 auto;
  width: 34px;
  text-align: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary, #64748b);
}

.ch-hint {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--info-soft, #eff6ff);
  border: 1px solid var(--info-border, #bfdbfe);
  color: var(--info, #1d4ed8);
  font-size: 12.5px;
  line-height: 1.55;
}

.ch-hint i {
  margin-top: 1px;
}

.ch-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* message */
.ch-message {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 13px;
  line-height: 1.5;
}

.ch-message.hidden {
  display: none;
}

.ch-msg-info {
  background: var(--info-soft, #eff6ff);
  color: var(--info, #2563eb);
  border: 1px solid var(--info-border, #bfdbfe);
}

.ch-msg-success {
  background: var(--success-soft, #f0fdf4);
  color: var(--success, #16a34a);
  border: 1px solid var(--success-border, #bbf7d0);
}

.ch-msg-error {
  background: var(--danger-soft, #fef2f2);
  color: var(--danger, #dc2626);
  border: 1px solid var(--danger-border, #fecaca);
}

.ch-message.is-fading {
  opacity: 0;
  transition: opacity 0.25s ease;
}

/* hero */
.ch-hero {
  background: linear-gradient(135deg, #075985, #0284c7);
  border-radius: 14px;
  padding: 22px 20px;
  color: #fff;
  text-align: center;
}

.ch-hero-label {
  font-size: 14px;
  opacity: 0.92;
}

.ch-hero-time {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.15;
  font-variant-numeric: tabular-nums;
}

.ch-hero-alt {
  font-size: 13px;
  opacity: 0.9;
  margin-top: 2px;
}

.ch-hero-sub {
  font-size: 12.5px;
  opacity: 0.92;
  margin-top: 8px;
  font-style: italic;
}

/* stats */
.ch-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.ch-stat {
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 10px;
  padding: 10px 12px;
  text-align: center;
  background: var(--bg-card, #fff);
}

.ch-stat b {
  display: block;
  font-size: 15.5px;
  color: var(--text, #0f172a);
  font-variant-numeric: tabular-nums;
}

.ch-stat-label {
  display: block;
  font-size: 11.5px;
  color: var(--text-secondary, #64748b);
  margin-bottom: 2px;
}

/* toolbar */
.result-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.result-toolbar .button-group {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.ch-meta {
  font-size: 12.5px;
  color: var(--text-secondary, #64748b);
  word-break: break-all;
  min-width: 0;
}

.ch-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 50px 16px;
  color: var(--text-secondary, #64748b);
  text-align: center;
}

.ch-empty i {
  font-size: 34px;
  opacity: 0.5;
}

.ch-empty p {
  margin: 0;
  font-size: 13px;
}

.ch-note {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 12px 14px;
  background: var(--info-soft, #eff6ff);
  border: 1px solid var(--info-border, #bfdbfe);
  border-radius: 10px;
  color: var(--info, #1d4ed8);
  font-size: 12.5px;
  line-height: 1.6;
}

@media (max-width: 767px) {
  .ch-hero-time {
    font-size: 32px;
  }
}