/* Nap Calculator - lightweight, mobile-friendly */
.npc-wrap { margin: 18px 0; }
.npc-card{
  border:1px solid rgba(0,0,0,.12);
  border-radius:14px;
  background:#fff;
  box-shadow:0 2px 10px rgba(0,0,0,.06);
  overflow:hidden;
  font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
}
.npc-header{ padding:18px 18px 10px; }
.npc-title{ font-size:20px; font-weight:800; line-height:1.2; }
.npc-sub{ font-size:13px; opacity:.75; margin-top:6px; }

.npc-body{ padding:0 18px 18px; }
.npc-row{ margin-top:12px; }
.npc-label{ display:block; font-size:13px; font-weight:700; margin-bottom:6px; }
.npc-input{
  width:100%;
  padding:12px;
  border-radius:10px;
  border:1px solid rgba(0,0,0,.14);
  font-size:16px;
}
.npc-inline{ display:flex; gap:10px; flex-wrap:wrap; align-items:center; }
.npc-btn{
  padding:11px 14px;
  border-radius:10px;
  border:1px solid rgba(0,0,0,.12);
  background:#f7f7f9;
  font-weight:800;
  cursor:pointer;
}
.npc-btn.is-primary{ background:#111827; border-color:#111827; color:#fff; }

.npc-presets{ display:flex; gap:8px; flex-wrap:wrap; margin-top:12px; }
.npc-chip{
  padding:9px 12px;
  border-radius:999px;
  border:1px solid rgba(0,0,0,.12);
  background:#fff;
  cursor:pointer;
  font-weight:800;
}
.npc-chip.is-active{ background:#2563eb; color:#fff; border-color:#2563eb; }

.npc-help{ font-size:12.5px; opacity:.8; margin:10px 2px 0; }

.npc-results{ margin-top:14px; border-top:1px solid rgba(0,0,0,.08); padding-top:14px; }
.npc-results-title{ font-size:14px; font-weight:900; margin-bottom:10px; }
.npc-results-grid{ display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:10px; }
@media(min-width:640px){ .npc-results-grid{ grid-template-columns:repeat(3,minmax(0,1fr)); } }
.npc-pill{
  border:1px solid rgba(0,0,0,.12);
  border-radius:12px;
  padding:12px;
  background:#f9fafb;
}
.npc-pill-time{ font-size:18px; font-weight:900; }
.npc-pill-meta{ font-size:12px; opacity:.75; margin-top:6px; }

.npc-note{ margin-top:12px; font-size:12.5px; opacity:.85; }
.npc-note-strong{ font-weight:900; }

.npc-footer{ padding:12px 18px 16px; border-top:1px solid rgba(0,0,0,.08); background:#fcfcfd; }
.npc-brand{ font-weight:900; font-size:12.5px; opacity:.85; }
.npc-disclaimer{ margin-top:6px; font-size:12px; opacity:.8; line-height:1.35; }