/* Overall page shell: sticky topbar + sidebar + main column. */

.topbar {
  min-height: 80px;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
  box-shadow: var(--shadow);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 360px;
}
.brand strong { display: block; font-size: 19px; }
.brand small  { display: block; color: var(--muted); font-size: 11px; margin-top: 3px; }

.efm-mark {
  background: var(--efm);
  color: #fff;
  font-size: 25px;
  font-weight: 900;
  letter-spacing: .04em;
  padding: 9px 12px;
  border-radius: 7px;
}

/* Environment badge — orange for dev, green for live. Impossible to
   miss, so nobody accidentally clicks 'reboot' on the wrong server. */
.env-badge {
  border-radius: 999px;
  padding: 5px 11px;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .07em;
  color: #000;
}
.env-badge-dev  { background: var(--env-dev-accent);  color: #1a0f00; }
.env-badge-live { background: var(--env-live-accent); color: #04180d; }

.top-kpis {
  display: flex;
  align-items: center;
  gap: 24px;
}
.top-kpis > div {
  min-width: 125px;
  padding-left: 16px;
  border-left: 1px solid var(--line);
}
.top-kpis span  { display: block; color: var(--muted); font-size: 10px; letter-spacing: .07em; }
.top-kpis b     { display: block; font-size: 20px; color: var(--efm); }
.top-kpis small { display: block; color: var(--muted); font-size: 10px; white-space: nowrap; margin-top: 2px; }

.app-shell {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  min-height: calc(100vh - 80px);
}

.sidebar {
  background: var(--panel);
  border-right: 1px solid var(--line);
  padding: 18px 10px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.nav {
  background: transparent;
  border-color: transparent;
  color: var(--muted);
  text-align: left;
  padding: 11px 12px;
}
.nav:hover, .nav.active {
  background: var(--efm-soft);
  color: var(--text);
  border-color: rgba(0, 139, 210, .35);
}

.side-version {
  margin-top: auto;
  padding: 12px;
  color: var(--muted);
  font-size: 10px;
  display: grid;
  gap: 4px;
  border-top: 1px solid var(--line);
}

.main {
  padding: 16px;
  min-width: 0;
}

.page          { display: none; }
.page.active   { display: block; }

.page-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin: 18px 0 12px;
}
.page-head h1 { margin: 0; font-size: 26px; }
.page-head p  { margin: 5px 0 0; color: var(--muted); }

/* Two-column layout used on several pages. */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 14px;
}

.monitor-lower {
  grid-template-columns: .55fr 1.45fr;
}

/* Metric row above two-col. */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.metric-grid-2col {
  grid-template-columns: 2fr 1fr;
}

footer {
  margin-top: 14px;
  background: var(--efm);
  color: #fff;
  border-radius: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  font-size: 11px;
}

@media (max-width: 1250px) {
  .top-kpis > div:nth-child(1) { display: none; }
  .app-shell        { grid-template-columns: 160px minmax(0, 1fr); }
  .two-col          { grid-template-columns: 1fr; }
  .metric-grid-2col { grid-template-columns: 1fr; }
}

@media (max-width: 850px) {
  .topbar    { position: static; flex-direction: column; align-items: flex-start; }
  .top-kpis  { width: 100%; justify-content: space-between; }
  .brand     { min-width: 0; }
  .app-shell { display: block; }
  .sidebar   { flex-direction: row; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .side-version { display: none; }
  .nav          { white-space: nowrap; }
  .main         { padding: 10px; }
  .metric-grid  { grid-template-columns: 1fr; }
  footer        { flex-direction: column; gap: 5px; text-align: center; }
}