/* ===== Child Sleep Calculator ===== */

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

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

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

.cs-mode {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.cs-mode-btn {
  flex: 1 1 140px;
  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;
}

.cs-mode-btn:hover {
  border-color: var(--accent, #7c3aed);
  color: var(--accent, #7c3aed);
}

.cs-mode-btn.is-active {
  background: var(--accent, #7c3aed);
  border-color: var(--accent, #7c3aed);
  color: #fff;
}

.cs-age-row {
  display: flex;
  gap: 8px;
}

.cs-age-input {
  flex: 1 1 auto;
  min-width: 0;
}

.cs-age-unit {
  flex: 0 0 110px;
}

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

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

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

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

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

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

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

/* hero */
.cs-hero {
  background: linear-gradient(135deg, #4c1d95, #7c3aed);
  border-radius: 14px;
  padding: 22px 20px;
  color: #fff;
  text-align: center;
}

.cs-hero-label {
  font-size: 14px;
  opacity: 0.9;
}

.cs-hero-time {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.15;
  font-variant-numeric: tabular-nums;
  letter-spacing: 2px;
}

.cs-hero-sub {
  font-size: 12.5px;
  opacity: 0.9;
  margin-top: 6px;
}

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

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

.cs-stat b {
  display: block;
  font-size: 17px;
  color: var(--text, #0f172a);
}

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

/* nap */
.cs-nap {
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 12px;
  overflow: hidden;
}

.cs-nap-title {
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text, #0f172a);
  border-bottom: 1px solid var(--border, #e2e8f0);
  background: var(--bg-soft, #f8fafc);
  display: flex;
  align-items: center;
  gap: 8px;
}

.cs-nap-list {
  padding: 4px 0;
}

.cs-nap-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border-soft, #f1f5f9);
  font-size: 13px;
}

.cs-nap-row:last-child {
  border-bottom: none;
}

.cs-nap-row.is-total {
  background: var(--bg-soft, #f8fafc);
  color: var(--text-secondary, #475569);
  font-size: 12.5px;
  font-style: italic;
}

.cs-nap-name {
  color: var(--text-secondary, #475569);
}

.cs-nap-val {
  color: var(--text, #0f172a);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

/* 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;
}

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

.cs-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;
}

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

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

.cs-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) {
  .cs-hero-time {
    font-size: 34px;
  }
}