:root {
  --monitor-bg: #020407;
  --monitor-panel-bg: #020a0a;
  --monitor-grid-gap: 0.75rem;
}

/* Make the whole page exactly one viewport high */
html {
  height: 100%;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body.monitor-root {
  margin: 0;
  height: 100vh;          /* hard lock to viewport */
  background: radial-gradient(circle at top, #050a10 0, #000000 60%);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Mono", monospace;
  overflow: hidden;        /* prevent any vertical growth */
}

#monitor-frame {
  display: flex;
  flex-direction: column;
  height: 100%;            /* fill body */
  padding: 0.75rem;
}

/* HEADER */

#monitor-header {
  display: grid;
  grid-template-columns: 1.5fr 1.5fr 1fr;
  align-items: center;
  column-gap: 0.75rem;
  row-gap: 0.35rem;
  margin-bottom: 0.75rem;
  flex: 0 0 auto;
}

.brand {
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.9rem;
}

.status-strip {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.75rem;
  opacity: 0.92;
}

.control-strip {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

.control-light {
  position: relative;
  border: none;
  cursor: pointer;
  padding: 0.25rem 0.6rem 0.25rem 0.9rem;
  background: #020b07;
  border-radius: 999px;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  display: inline-flex;
  align-items: center;
  color: inherit;
}

.control-light::before {
  content: "";
  position: absolute;
  left: 0.35rem;
  top: 50%;
  transform: translateY(-50%);
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
}

.control-label {
  white-space: nowrap;
}

/* MAIN GRID */

#monitor-grid {
  flex: 1 1 auto;
  min-height: 0; /* allow grid to shrink inside frame */
  display: grid;
  gap: var(--monitor-grid-gap);
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-template-rows: 2fr 1fr;
  grid-template-areas:
    "reality orbit substrate"
    "log    log   log";
}

/* PANELS */

.panel {
  position: relative;
  background: radial-gradient(circle at top, #041414 0, #020707 60%);
  border-radius: 8px;
  padding: 0.5rem 0.5rem 0.35rem;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 0; /* prevent vertical growth inside grid cell */
}

.panel-title {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin-bottom: 0.25rem;
}

.panel-inner {
  flex: 1;
  min-height: 0;
  width: 100%;
}

.panel-reality {
  grid-area: reality;
}

.panel-orbit {
  grid-area: orbit;
}

.panel-substrate {
  grid-area: substrate;
}

.panel-log {
  grid-area: log;
}

.panel-overlay {
  position: absolute;
  inset: 0.5rem;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.25s ease-out;
}

/* FOOTER */

#monitor-footer {
  flex: 0 0 auto;
  display: flex;
  justify-content: space-between;
  margin-top: 0.75rem;
  font-size: 0.7rem;
  opacity: 0.85;
}

/* RESPONSIVE */

@media (max-width: 900px) {
  #monitor-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto auto;
    grid-template-areas:
      "reality"
      "orbit"
      "substrate"
      "log";
  }
}