/* CO2 Flooding Simulator — Multi-Page Layout (extends shared/simulator-theme.css) */

:root {
  --co2: #e0e0e0;
}

/* ── Body must be flex column for multi-page layout ── */
body {
  display: flex !important;
  flex-direction: column !important;
}

/* ══════════════════ NAVIGATION BAR ══════════════════ */
#nav-bar {
  background: rgba(5,13,20,0.95);
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  user-select: none;
  z-index: 20;
}
#nav-groups {
  display: flex;
  gap: 1px;
  padding: 2px 4px;
  background: rgba(0,0,0,0.3);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.nav-grp {
  background: rgba(255,255,255,0.03);
  border: 1px solid transparent;
  border-bottom: none;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1px;
  padding: 5px 12px;
  cursor: pointer;
  transition: all 0.15s;
  border-radius: 3px 3px 0 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.nav-grp:hover { color: var(--co2); background: rgba(224,224,224,0.06); }
.nav-grp.active {
  color: var(--co2);
  background: rgba(224,224,224,0.1);
  border-color: var(--border2);
}
#nav-pages {
  display: flex;
  gap: 1px;
  padding: 2px 4px;
  min-height: 24px;
  overflow: hidden;
}
.nav-pg {
  background: rgba(255,255,255,0.02);
  border: 1px solid transparent;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.5px;
  padding: 3px 10px;
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.15s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.nav-pg:hover { color: var(--green); background: rgba(0,230,118,0.06); }
.nav-pg.active {
  color: var(--green);
  background: rgba(0,230,118,0.1);
  border-color: var(--border);
}

/* ══════════════════ DISCHARGE BANNER ══════════════════ */
.discharge-banner {
  display: none;
  background: #b71c1c;
  color: #fff;
  text-align: center;
  padding: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  z-index: 50;
  animation: alarmblink 0.5s infinite;
  flex-shrink: 0;
}
.discharge-banner.active { display: block; }

/* ══════════════════ DISPLAY AREA ══════════════════ */
#display-area {
  flex: 1 1 0;
  overflow: hidden;
  min-height: 0;
  display: flex;
  flex-direction: column;
}
.disp-page {
  display: none !important;
  flex: 1 1 0;
  min-height: 0;
  overflow: hidden;
}
.disp-page.active {
  display: flex !important;
  flex-direction: column;
}

/* ══════════════════ NAV BAR FLEX ══════════════════ */
#nav-bar { flex-shrink: 0; }

/* ══════════════════ STATUS PAGE (original layout) ══════════════════ */
.status-grid {
  display: grid;
  grid-template-columns: 200px 1fr 200px;
  grid-template-rows: 1fr 180px;
  gap: 4px;
  padding: 4px;
  flex: 1 1 0;
  min-height: 0;
}
#schematic-panel { grid-column: 2; grid-row: 1 / 2; }
#schematic { width: 100%; height: 100%; }
#bottom { grid-column: 1 / 4; display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 4px; }

/* ══════════════════ PAGE LAYOUTS ══════════════════ */
.page-split {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 4px;
  padding: 4px;
  flex: 1 1 0;
  min-height: 0;
}
.page-main { min-width: 0; overflow: hidden; }
.page-side { overflow: hidden; }
.page-full {
  padding: 4px;
  flex: 1 1 0;
  min-height: 0;
}
.page-split canvas,
.page-full canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* ══════════════════ CONTROL PANELS (sidebar) ══════════════════ */
.ctrl-section {
  margin-bottom: 10px;
}
.ctrl-section-hdr {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 1px;
  color: var(--co2);
  padding: 4px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 6px;
}
.ctrl-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 3px 0;
  font-size: 10px;
  color: var(--muted);
}
.ctrl-row .val {
  font-family: var(--font-mono);
  color: var(--green);
}
.ctrl-row .val.warn { color: var(--amber); }
.ctrl-row .val.alarm { color: var(--red); }
.ctrl-btn {
  font-family: var(--font-mono);
  font-size: 9px;
  padding: 3px 8px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--muted);
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.15s;
}
.ctrl-btn:hover { background: rgba(224,224,224,0.08); color: var(--co2); }
.ctrl-btn.active { background: rgba(0,230,118,0.15); border-color: var(--green); color: var(--green); }
.ctrl-btn.danger { background: rgba(255,23,68,0.1); border-color: var(--red); color: var(--red); }
.ctrl-btn.danger:hover { background: rgba(255,23,68,0.2); }

/* Mode toggle buttons */
.mode-group {
  display: flex;
  gap: 2px;
  margin: 4px 0;
}
.mode-btn {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 8px;
  padding: 4px 6px;
  text-align: center;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  color: var(--muted);
  cursor: pointer;
  transition: all 0.15s;
}
.mode-btn:hover { color: var(--co2); }
.mode-btn.active {
  background: rgba(224,224,224,0.1);
  border-color: var(--co2);
  color: var(--co2);
}

/* Slider control */
.ctrl-slider {
  width: 100%;
  margin: 4px 0;
  accent-color: var(--co2);
}

/* Indicator lights */
.ind-light {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--muted);
  margin-right: 4px;
  vertical-align: middle;
}
.ind-light.on { background: var(--green); box-shadow: 0 0 4px var(--green); }
.ind-light.warn { background: var(--amber); box-shadow: 0 0 4px var(--amber); }
.ind-light.alarm { background: var(--red); box-shadow: 0 0 4px var(--red); animation: alarmblink 1s infinite; }

/* ══════════════════ STATUS LED ══════════════════ */
.status-led { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.led-green { background: var(--green); box-shadow: 0 0 6px var(--green); }
.led-red { background: var(--red); box-shadow: 0 0 6px var(--red); animation: pulse 1s infinite; }
.led-amber { background: var(--amber); box-shadow: 0 0 6px var(--amber); }
.led-grey { background: var(--muted); opacity: 0.4; }

/* ══════════════════ STATUS ROW ══════════════════ */
.status-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 3px 0;
  font-size: 10px;
  color: var(--muted);
}

/* ══════════════════ CO2-SPECIFIC ══════════════════ */
@keyframes co2fill { 0% { opacity: 0.1; } 100% { opacity: 0.7; } }

.big-btn.esd {
  background: rgba(224,224,224,0.08);
  border-color: var(--co2);
  color: var(--co2);
}
.big-btn.esd:hover { background: rgba(224,224,224,0.18); }

/* Checkbox */
.check-box {
  width: 14px; height: 14px; border: 1px solid var(--border2); border-radius: 2px;
  cursor: pointer; display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.check-box.checked { background: var(--green); border-color: var(--green); }
.check-box.checked::after { content: '✓'; font-size: 9px; color: #000; }

/* Checklist item */
.checklist-item {
  display: flex; align-items: flex-start; gap: 8px;
  padding: 4px 0; font-size: 10px; color: var(--muted);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

/* Damper indicators */
.damper-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; margin-top: 4px; }
.damper-indicator {
  padding: 4px 6px; border-radius: 2px; font-size: 9px;
  font-family: var(--font-mono); text-align: center; border: 1px solid var(--border);
}
.damper-indicator.open-d { background: rgba(255,23,68,0.1); border-color: var(--red); color: var(--red); }
.damper-indicator.closed-d { background: rgba(0,230,118,0.1); border-color: var(--green); color: var(--green); }

/* Zone buttons */
.zone-btn {
  padding: 6px 10px; font-size: 10px; font-family: var(--font-mono);
  border: 1px solid var(--border2); background: rgba(0,0,0,0.4);
  color: var(--muted); cursor: pointer; border-radius: 2px;
  margin-right: 4px; transition: all .15s;
}
.zone-btn.selected { background: rgba(224,224,224,0.1); border-color: var(--co2); color: var(--co2); }

/* Sequence steps */
.seq-step {
  display: flex; align-items: center; gap: 8px; padding: 4px 0;
  font-size: 10px; border-bottom: 1px solid rgba(255,255,255,0.04);
}
.seq-num {
  width: 18px; height: 18px; border-radius: 50%; border: 1px solid var(--border2);
  display: flex; align-items: center; justify-content: center;
  font-size: 9px; font-family: var(--font-mono); flex-shrink: 0;
}
.seq-num.done { background: var(--green); border-color: var(--green); color: #000; }
.seq-num.active { background: rgba(255,171,0,0.2); border-color: var(--amber); color: var(--amber); animation: pulse 1s infinite; }
.seq-num.pending { opacity: 0.3; }

/* CO2 concentration display */
.co2-conc-display {
  text-align: center; padding: 8px;
  background: rgba(224,224,224,0.05); border: 1px solid var(--border);
  border-radius: 4px; margin-top: 6px;
}
.co2-big { font-family: var(--font-mono); font-size: 28px; color: var(--co2); }
.co2-big.danger { color: var(--red); animation: blink .8s infinite; }

/* ══════════════════ PIPELINE LINEUP ══════════════════ */
.pl-status { padding: 4px 6px; border-radius: 3px; font-family: var(--font-mono); font-size: 9px; margin-bottom: 6px; }
.pl-status.ok { background: rgba(0,230,118,0.1); color: var(--green); border: 1px solid rgba(0,230,118,0.3); }
.pl-status.fault { background: rgba(255,23,68,0.1); color: var(--red); border: 1px solid rgba(255,23,68,0.3); animation: alarmblink 1.5s infinite; }
.pl-status.idle { background: rgba(224,224,224,0.04); color: var(--muted); border: 1px solid var(--border); }
.pl-sec { font-family: var(--font-mono); font-size: 8px; color: var(--co2); padding: 4px 0 2px; border-bottom: 1px solid var(--border); letter-spacing: 1px; }
.pl-row { display: flex; align-items: center; gap: 4px; padding: 2px 0; font-size: 9px; }
.pl-id { font-family: var(--font-mono); color: var(--muted); min-width: 65px; }
.pl-desc { flex: 1; color: rgba(255,255,255,0.4); font-size: 8px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pl-vbtn { font-family: var(--font-mono); font-size: 8px; padding: 2px 6px; border-radius: 2px; cursor: pointer; min-width: 44px; text-align: center; transition: all 0.15s; }
.pl-vbtn.open { background: rgba(0,230,118,0.15); border: 1px solid var(--green); color: var(--green); }
.pl-vbtn.closed { background: rgba(255,23,68,0.1); border: 1px solid var(--red); color: var(--red); }
.pl-vbtn.req { box-shadow: 0 0 4px var(--amber); }

/* ══════════════════ RESPONSIVE ══════════════════ */
@media (max-width: 1200px) {
  .status-grid { grid-template-columns: 180px 1fr 180px; }
  .page-split { grid-template-columns: 1fr 220px; }
}
@media (max-width: 1000px) {
  .status-grid { grid-template-columns: 160px 1fr 160px; }
  .page-split { grid-template-columns: 1fr 200px; }
}
@media (max-height: 800px) {
  .status-grid { grid-template-rows: 1fr 160px; }
}
@media (max-height: 700px) {
  .status-grid { grid-template-rows: 1fr 140px; }
}
.ctrl-group { margin-bottom: 8px; }