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

/* ── LNG colour tokens ── */
:root {
  --lng:    #00d4ff;
  --lng2:   #0090cc;
  --lng3:   #005488;
  --purple: #aa44ff;
  --bog:    #40aaff;
  --cryo:   #c0f0ff;
}

/* ── 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;
  flex-shrink: 0;
}
#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(--lng); background: rgba(0,212,255,0.06); }
.nav-grp.active {
  color: var(--lng);
  background: rgba(0,212,255,0.1);
  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);
}

/* ══════════════════ 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;
}

/* ══════════════════ STATUS PAGE ══════════════════ */
.status-grid {
  display: grid;
  grid-template-columns: 220px 1fr 220px;
  grid-template-rows: 1fr 220px;
  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 ══════════════════ */
.ctrl-section { margin-bottom: 10px; }
.ctrl-section-hdr {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 1px;
  color: var(--lng);
  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(0,212,255,0.1); color: var(--lng); }
.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); }
.ctrl-btn.warn   { background: rgba(255,171,0,0.1); border-color: var(--amber); color: var(--amber); }

/* Mode toggle */
.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(--lng); }
.mode-btn.active {
  background: rgba(0,230,118,0.12);
  border-color: var(--green);
  color: var(--green);
}

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

/* 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; }

/* ══════════════════ BOG / GAS ZONES ══════════════════ */
.ppm-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 5px; }
.ppm-cell {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 5px 7px;
}
.ppm-cell.warn25  { border-color: var(--amber); background: rgba(255,171,0,0.07); }
.ppm-cell.warn50  { border-color: var(--red); background: rgba(255,23,68,0.1); animation: alarmblink 1s infinite; }
.ppm-zone { font-size: 9px; color: var(--muted); }
.ppm-val  { font-family: var(--font-mono); font-size: 18px; color: var(--green); margin: 1px 0; }
.ppm-val.warn  { color: var(--amber); }
.ppm-val.alarm { color: var(--red); }
.ppm-bar  { height: 4px; border-radius: 2px; background: var(--green); transition: width 0.3s, background 0.3s; }

/* ══════════════════ SCENARIO ══════════════════ */
.scenario-box {
  background: rgba(0,212,255,0.05);
  border: 1px solid var(--border2);
  border-radius: 3px;
  padding: 6px 8px;
  margin-bottom: 5px;
  font-size: 10px;
}
.scenario-title { color: var(--lng); font-weight: 600; margin-bottom: 2px; }
.scenario-desc  { color: var(--muted); line-height: 1.5; }

/* ══════════════════ CHECKLIST ══════════════════ */
.chk-item {
  display: flex;
  align-items: flex-start;
  gap: 5px;
  padding: 2px 0;
  font-size: 9px;
  line-height: 1.4;
}
.chk-done { color: var(--green); font-family: var(--font-mono); }
.chk-todo { color: var(--muted); font-family: var(--font-mono); }

/* ══════════════════ BUNKERING BUTTONS ══════════════════ */
.big-btn.bunk { background: rgba(0,212,255,0.08); border-color: var(--lng); color: var(--lng); }
.big-btn.bunk:hover { background: rgba(0,212,255,0.2); }

/* ══════════════════ 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(0,212,255,0.05); color: var(--muted); border: 1px solid var(--border); }
.pl-sec  { font-family: var(--font-mono); font-size: 8px; color: var(--lng); 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: 62px; }
.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: 38px;
  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.transitioning { background: rgba(255,171,0,0.12); border: 1px solid var(--amber); color: var(--amber); }
.pl-vbtn.req { box-shadow: 0 0 4px var(--amber); animation: alarmblink 0.8s infinite; }

/* ══════════════════ GAS DETECTOR SAMPLE POINTS ══════════════════ */
.sample-pt {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 3px 6px;
  border-radius: 2px;
  cursor: pointer;
  transition: background 0.15s;
}
.sample-pt:hover { background: rgba(0,212,255,0.08); }
.sample-pt.active-sample { background: rgba(0,212,255,0.12); }
.sample-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--muted);
}
.sample-dot.sampling { background: var(--amber); animation: blink 1s infinite; }
.sample-dot.sampled  { background: var(--green); }

/* ══════════════════ HOTLINKS ══════════════════ */
.hotlink {
  font-family: var(--font-mono);
  font-size: 8px;
  color: var(--lng);
  cursor: pointer;
  text-decoration: underline;
  text-decoration-style: dotted;
  display: inline-block;
  margin: 2px 0;
}
.hotlink:hover { color: var(--green); }

/* ══════════════════ RESPONSIVE ══════════════════ */
@media (max-width: 1200px) {
  .status-grid { grid-template-columns: 185px 1fr 185px; }
  .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 170px; }
}
@media (max-height: 700px) {
  .status-grid { grid-template-rows: 1fr 140px; }
}

/* ══════════════════ MISC ══════════════════ */
.ctrl-group { margin-bottom: 8px; }
.ctrl-label {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--lng2);
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}
.sep { border: none; border-top: 1px solid var(--border); margin: 6px 0; }
.gauge-row { display: flex; flex-direction: column; gap: 4px; margin-bottom: 6px; }
.gauge-item {}
.gauge-label {
  display: flex;
  justify-content: space-between;
  font-size: 9px;
  color: var(--muted);
  margin-bottom: 2px;
}
.gauge-value { font-family: var(--font-mono); font-size: 11px; color: var(--green); }
.gauge-value.warn  { color: var(--amber); }
.gauge-value.alarm { color: var(--red); }
.gauge-unit { font-size: 8px; color: var(--muted); }
.gauge-bar-track {
  height: 4px;
  background: rgba(255,255,255,0.06);
  border-radius: 2px;
  overflow: hidden;
}
.gauge-bar {
  height: 100%;
  background: var(--green);
  border-radius: 2px;
  transition: width 0.4s, background 0.4s;
}

/* ══════════════════ COMPRESSOR / RELIQ UNIT TILES ══════════════════ */
.unit-tile {
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 6px 8px;
  margin-bottom: 6px;
  background: rgba(255,255,255,0.02);
}
.unit-tile.running { border-color: var(--green); background: rgba(0,230,118,0.05); }
.unit-tile.fault   { border-color: var(--red); background: rgba(255,23,68,0.06); }
.unit-tile-hdr {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--lng);
  margin-bottom: 4px;
  display: flex;
  justify-content: space-between;
}

/* ══════════════════ ALARMS ══════════════════ */
@keyframes alarmblink { 0%,100%{opacity:1} 50%{opacity:0.3} }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }