/* ============================================
   SLEEP CALCULATOR — .sc-*
   ============================================ */

.sc-calculator {
  max-width: 680px;
  margin: 0 auto;
}

/* ---- Mode toggle ---- */
.sc-mode-toggle {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.sc-mode-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 1.1rem;
  min-height: 44px;
  border-radius: 999px;
  border: 2px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
  white-space: nowrap;
}

.sc-mode-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.sc-mode-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--on-primary);
}

/* ---- Time input row ---- */
.sc-input-row {
  display: flex;
  gap: 0.75rem;
  align-items: flex-end;
  margin-bottom: 1.75rem;
}

.sc-input-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.sc-input-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.sc-time-input {
  font-size: 1.6rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  padding: 0.6rem 0.875rem;
  letter-spacing: 0.02em;
  color: var(--text);
}

.sc-now-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1rem;
  min-height: 44px;
  font-size: 0.875rem;
  border: 2px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
  font-weight: 500;
  flex-shrink: 0;
  align-self: flex-end;
  margin-bottom: 0;
}

.sc-now-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ---- Result cards ---- */
.sc-results {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin-bottom: 1rem;
}

.sc-result-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
  padding: 0.875rem 1.125rem;
  border-radius: var(--radius);
  border: 2px solid var(--border);
  background: var(--surface);
  transition: var(--transition);
  position: relative;
}

.sc-result-card.sc-recommended {
  border-color: var(--success);
  background: rgba(var(--success-rgb), 0.05);
}

.sc-result-card.sc-good {
  border-color: var(--warning);
  background: rgba(var(--warning-rgb), 0.04);
}

.sc-result-card.sc-short {
  border-color: var(--danger);
  background: rgba(var(--danger-rgb), 0.04);
}

/* Time column */
.sc-card-time {
  font-size: 1.6rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  line-height: 1;
  min-width: 6.5rem;
  letter-spacing: -0.01em;
}

/* Meta column */
.sc-card-meta {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 0;
}

.sc-card-cycles {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

/* Quality bar */
.sc-quality-bar {
  height: 5px;
  border-radius: 3px;
  background: var(--border);
  overflow: hidden;
  width: 100%;
  max-width: 180px;
}

.sc-quality-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.4s ease;
}

.sc-quality-fill.q-optimal { background: var(--success); }
.sc-quality-fill.q-good    { background: var(--warning); }
.sc-quality-fill.q-short   { background: var(--danger); }

/* Badge column */
.sc-card-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
  flex-shrink: 0;
}

.sc-badge-recommended {
  background: rgba(var(--success-rgb), 0.15);
  color: var(--success);
}

.sc-badge-good {
  background: rgba(var(--warning-rgb), 0.15);
  color: var(--warning);
}

.sc-badge-short {
  background: rgba(var(--danger-rgb), 0.12);
  color: var(--danger);
}

.sc-badge-vshort {
  background: var(--surface);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

/* ---- Actions ---- */
.sc-actions {
  display: flex;
  justify-content: center;
  margin: 1rem 0 2rem;
}

.sc-actions .btn {
  min-height: 44px;
  min-width: 180px;
}

/* ---- Nap section ---- */
.sc-nap-section {
  margin-top: 2rem;
  padding: 1.375rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.sc-nap-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 0.375rem;
}

.sc-nap-intro {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 0 0 1.125rem;
}

.sc-nap-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.sc-nap-card {
  padding: 1rem;
  border-radius: var(--radius);
  border: 2px solid var(--border);
  background: var(--bg);
  transition: var(--transition);
}

.sc-nap-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.sc-nap-card-name {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.sc-nap-card-duration {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  background: rgba(var(--primary-rgb), 0.1);
  color: var(--primary);
}

.sc-nap-card-time {
  font-size: 1.4rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  line-height: 1;
  margin-bottom: 0.35rem;
}

.sc-nap-card-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* ---- Mobile (≤ 640px) ---- */
@media (max-width: 640px) {
  .sc-mode-toggle {
    flex-direction: column;
    gap: 0.4rem;
  }

  .sc-mode-btn {
    justify-content: center;
    border-radius: var(--radius);
  }

  .sc-input-row {
    flex-direction: column;
    align-items: stretch;
  }

  .sc-now-btn {
    justify-content: center;
    align-self: stretch;
  }

  .sc-time-input {
    font-size: 1.35rem;
  }

  .sc-result-card {
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto;
    gap: 0.5rem 0.75rem;
  }

  .sc-card-time {
    font-size: 1.35rem;
    grid-column: 1;
    grid-row: 1;
    min-width: unset;
  }

  .sc-card-badge {
    grid-column: 2;
    grid-row: 1;
    align-self: start;
  }

  .sc-card-meta {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .sc-nap-cards {
    grid-template-columns: 1fr;
  }

  .sc-actions .btn {
    width: 100%;
  }
}