/**
 * Paediatric ECG / QTc tool — uses css/app-theme.css
 */
html {
  height: 100%;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  padding-bottom: calc(var(--tab-h) + var(--safe-b) + 8px);
  padding-top: var(--safe-t);
  font-size: 16px;
}

.page {
  display: none;
  padding: 14px calc(14px + var(--safe-r)) 8px calc(14px + var(--safe-l));
  max-width: 780px;
  margin: 0 auto;
  width: 100%;
  min-width: 0;
}

.page.active {
  display: block;
}

/* BOTTOM TAB BAR (mobile) */
.tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: calc(var(--tab-h) + var(--safe-b));
  background: rgba(26, 29, 39, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  justify-content: space-around;
  padding-top: 6px;
  padding-bottom: var(--safe-b);
  padding-left: var(--safe-l);
  padding-right: var(--safe-r);
  z-index: 100;
}

.tab-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  position: relative;
  z-index: 1;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px 4px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.3px;
  transition: color 0.15s;
  min-height: 44px;
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
}

.tab-btn svg,
.tab-btn span,
.tab-btn .dot {
  pointer-events: none;
}

.tab-btn.active {
  color: var(--accent);
}

.tab-btn svg {
  width: 24px;
  height: 24px;
  stroke-width: 1.8;
}

.tab-btn .dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0;
  transition: opacity 0.15s;
  margin-top: 1px;
}

.tab-btn.active .dot {
  opacity: 1;
}

/* DESKTOP NAV */
.desktop-nav {
  display: none;
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(15, 17, 23, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  justify-content: center;
  gap: 4px;
  padding: 10px calc(20px + var(--safe-r)) 10px calc(20px + var(--safe-l));
}

.dnb {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 8px 20px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.dnb:hover {
  background: var(--surface2);
  color: var(--text);
}

.dnb.active {
  background: var(--surface);
  color: var(--accent);
}

.page-header {
  padding: 6px 0 16px;
}

.page-header h1 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
}

.page-header p {
  font-size: 0.77rem;
  color: var(--muted);
  margin-top: 3px;
}

.card {
  padding: 16px;
  margin-bottom: 12px;
}

.card-title {
  font-size: 0.67rem;
}

.field {
  margin-bottom: 13px;
}

.field label {
  font-size: 0.79rem;
}

/* UNIT TOGGLE */
.unit-tog {
  display: flex;
  border-radius: 10px;
  overflow: hidden;
  border: 1.5px solid var(--border);
}

.unit-tog input[type="radio"] {
  display: none;
}

.unit-tog label {
  flex: 1;
  text-align: center;
  padding: 12px 6px;
  font-size: 0.86rem;
  color: var(--muted);
  background: var(--surface2);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  border-right: 1px solid var(--border);
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.unit-tog label:last-of-type {
  border-right: none;
}

.unit-tog input[type="radio"]:checked + label {
  background: var(--accent);
  color: var(--accent-on);
  font-weight: 700;
}

@media (max-width: 400px) {
  .unit-tog {
    flex-direction: column;
  }
  .unit-tog label {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .unit-tog label:last-of-type {
    border-bottom: none;
  }
}

/* STAT CARDS — QTc */
.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  min-width: 0;
}

@media (max-width: 520px) {
  .stat-grid {
    grid-template-columns: 1fr;
  }
}

.stat {
  padding: 13px;
}

.stat.hi {
  border-color: var(--accent);
  background: rgba(32, 178, 170, 0.08);
}

.stat.pos {
  border-color: var(--success);
  background: rgba(34, 197, 94, 0.06);
}

.stat.neg {
  border-color: var(--danger);
  background: rgba(239, 68, 68, 0.07);
}

.stat .lbl {
  font-size: 0.64rem;
}

.stat .val {
  font-size: 1.35rem;
}

.stag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.67rem;
  font-weight: 700;
  margin-top: 4px;
}

.stag-def {
  background: rgba(32, 178, 170, 0.15);
  color: var(--accent);
}

.stag-ok {
  background: rgba(34, 197, 94, 0.12);
  color: var(--success);
}

.stag-flag {
  background: rgba(239, 68, 68, 0.12);
  color: var(--danger);
}

.alert strong {
  display: block;
  font-size: 0.88rem;
  margin-bottom: 3px;
}

.alert p {
  opacity: 0.88;
}

/* CAUSE ITEMS */
.cause-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7px;
  margin-bottom: 4px;
}

@media (max-width: 500px) {
  .cause-grid {
    grid-template-columns: 1fr;
  }
}

.ci {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  padding: 10px 12px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.15s;
  background: var(--surface2);
  user-select: none;
}

.ci:hover {
  border-color: var(--muted);
}

.ci.sel {
  border-color: var(--warn);
  background: rgba(245, 158, 11, 0.08);
}

.chk {
  width: 14px;
  height: 14px;
  border: 1.5px solid var(--border);
  border-radius: 3px;
  flex-shrink: 0;
  margin-top: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  color: transparent;
  transition: all 0.15s;
}

.ci.sel .chk {
  background: var(--warn);
  border-color: var(--warn);
  color: #0f1117;
}

.dn {
  font-size: 0.81rem;
  font-weight: 600;
  color: var(--text);
}

.ds {
  font-size: 0.71rem;
  color: var(--muted);
}

.sl {
  font-size: 0.69rem;
  font-weight: 700;
  color: var(--accent2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 16px 0 9px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

.sl:first-child {
  margin-top: 0;
}

.hr-ref {
  display: none;
  font-size: 0.77rem;
  color: var(--text);
  background: rgba(32, 178, 170, 0.08);
  border: 1px solid rgba(32, 178, 170, 0.2);
  border-radius: 8px;
  padding: 8px 12px;
  margin-top: 8px;
}

.prog-wrap {
  height: 3px;
  background: var(--surface2);
  border-radius: 2px;
  margin-bottom: 12px;
  overflow: hidden;
}

.prog-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.3s;
}

.hint-text {
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 10px;
}

.hint-text strong {
  color: var(--text);
}

/* ECG QUESTIONS */
.eq {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 12px;
  margin-bottom: 9px;
  overflow: hidden;
  transition: border-color 0.2s, background 0.2s;
}

.eq.ans-yes {
  border-color: rgba(34, 197, 94, 0.5);
}

.eq.ans-no {
  border-color: rgba(239, 68, 68, 0.6);
}

.eq-hd {
  padding: 12px 13px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  min-width: 0;
}

@media (max-width: 480px) {
  .eq-hd {
    flex-direction: column;
    align-items: stretch;
  }
  .ecat {
    align-self: flex-start;
  }
}

.ecat {
  font-size: 0.62rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-on);
  background: var(--accent);
  padding: 2px 7px;
  border-radius: 4px;
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: 2px;
}

.eq-q {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
}

.eq-note {
  font-size: 0.73rem;
  color: var(--muted);
  margin-top: 2px;
  font-style: italic;
  line-height: 1.4;
}

.eq-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  padding: 0 13px 11px;
}

.eqb {
  flex: 1;
  padding: 10px 8px;
  border-radius: 8px;
  border: 1.5px solid var(--border);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  background: var(--surface2);
  color: var(--muted);
  transition: all 0.15s;
  min-height: 44px;
  min-width: 0;
  line-height: 1.35;
  touch-action: manipulation;
  -webkit-appearance: none;
  appearance: none;
}

@media (max-width: 560px) {
  .eq-btns {
    flex-direction: column;
  }
  .eqb {
    flex: none;
    width: 100%;
    font-size: 0.78rem;
  }
}

.eqb.yb:hover {
  border-color: var(--success);
  color: var(--success);
}

.eqb.nb:hover {
  border-color: var(--danger);
  color: var(--danger);
}

.eqb.yb.active {
  background: rgba(34, 197, 94, 0.1);
  border-color: var(--success);
  color: var(--success);
}

.eqb.nb.active {
  background: rgba(239, 68, 68, 0.1);
  border-color: var(--danger);
  color: var(--danger);
}

.eq-flag {
  display: none;
  margin: 0 13px 11px;
  padding: 10px 12px;
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 8px;
  font-size: 0.78rem;
  color: var(--danger);
  line-height: 1.5;
}

.eq.ans-no .eq-flag {
  display: block;
}

/* CHECKLIST RESULT */
.cr {
  border-radius: var(--radius);
  overflow: hidden;
  display: none;
}

.cr.show {
  display: block;
}

.cr-top {
  padding: 16px 17px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.cr-top.all-yes {
  background: rgba(34, 197, 94, 0.08);
  border-bottom: 2px solid rgba(34, 197, 94, 0.4);
}

.cr-top.has-no {
  background: rgba(239, 68, 68, 0.08);
  border-bottom: 2px solid rgba(239, 68, 68, 0.4);
}

.cr-icon {
  font-size: 1.8rem;
  flex-shrink: 0;
}

.cr-title {
  font-size: 0.95rem;
  font-weight: 700;
}

.cr-sub {
  font-size: 0.79rem;
  margin-top: 2px;
  color: var(--muted);
}

.cr-bd {
  padding: 13px 16px;
}

.cr-item {
  padding: 7px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 8px;
  align-items: flex-start;
  font-size: 0.81rem;
}

.cr-item:last-child {
  border-bottom: none;
}

@media (min-width: 640px) {
  body {
    padding-bottom: 20px;
    font-size: 15px;
  }
  .tab-bar {
    display: none;
  }
  .desktop-nav {
    display: flex;
  }
  .page {
    padding: 18px calc(20px + var(--safe-r)) 8px calc(20px + var(--safe-l));
  }
}