/* App shell: header, body grid, sidebar/main split. */
/* ============================================================
   LAYOUT
   ============================================================ */
.app-header {
  background: var(--green);
  color: white;
  padding: 11px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 3px solid var(--green-light);
  flex-shrink: 0;
}
.hdr-brand {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.65;
}
.hdr-sep { opacity: 0.3; font-size: 14px; }
.hdr-title { font-size: 15px; font-weight: 700; letter-spacing: -0.01em; }
.hdr-version {
  font-size: 10px;
  opacity: 0.5;
  font-weight: 600;
  letter-spacing: 0.06em;
}
@media (max-width: 480px) {
  .app-header { padding: 8px 12px; gap: 6px; }
  .hdr-brand  { font-size: 8.5px; letter-spacing: 0.10em; }
  .hdr-sep    { display: none; }
  .hdr-title  { font-size: 13px; }
  .hdr-version{ font-size: 9px; }
}

.app-body {
  display: flex;
  height: calc(100vh - 48px);
  overflow: hidden;
}

.sidebar {
  width: 296px;
  flex-shrink: 0;
  background: var(--paper-warm);
  border-right: 1px solid var(--rule-strong);
  overflow-y: auto;
  padding: 14px 14px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.main {
  flex: 1;
  overflow-y: auto;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}