:root {
  --bg: #0b0e14; --panel: #11161f; --line: #1f2937;
  --green: #00ff9c; --amber: #ffb000; --cyan: #5eead4; --red: #ff5470;
  --text: #e8ecef; --dim: #6b7684;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg);
  background-image: linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--text); font-family: 'IBM Plex Sans', sans-serif;
  padding: 24px; min-height: 100vh;
}
header {
  display: flex; justify-content: space-between; align-items: baseline;
  border-bottom: 1px solid var(--line); padding-bottom: 16px; margin-bottom: 24px;
  flex-wrap: wrap; gap: 8px;
}
h1 {
  font-family: 'IBM Plex Mono', monospace; font-size: 1.4rem; font-weight: 700;
  letter-spacing: 0.02em; margin: 0; color: var(--green);
  text-shadow: 0 0 12px rgba(0,255,156,0.35);
}
h1 .cursor {
  display: inline-block; width: 10px; height: 1.1em; background: var(--green);
  margin-left: 6px; animation: blink 1.1s steps(1) infinite; vertical-align: text-bottom;
}
@keyframes blink { 50% { opacity: 0; } }
.clock { font-family: 'IBM Plex Mono', monospace; color: var(--dim); font-size: 0.85rem; }
.section-title {
  font-family: 'IBM Plex Mono', monospace; font-size: 0.75rem; letter-spacing: 0.15em;
  color: var(--dim); text-transform: uppercase; margin: 28px 0 12px;
}
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; align-items: stretch; }
.panel {
  background: var(--panel); border: 1px solid var(--line); border-radius: 6px;
  padding: 18px 20px; position: relative; overflow: hidden;
  display: flex; flex-direction: column; height: 100%;
}
.panel::before {
  content: ''; position: absolute; top: 0; left: 0; width: 3px; height: 100%;
  background: var(--dot-color, var(--dim));
}
.panel-label {
  font-family: 'IBM Plex Mono', monospace; font-size: 0.7rem; letter-spacing: 0.12em;
  color: var(--dim); text-transform: uppercase; margin-bottom: 10px;
  display: flex; align-items: center; gap: 8px;
}
.dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--dim);
  box-shadow: 0 0 6px currentColor; flex-shrink: 0;
}
.dot.on { background: var(--green); color: var(--green); animation: pulse 2s ease-in-out infinite; }
.dot.off { background: var(--dim); color: var(--dim); }
.dot.warn { background: var(--amber); color: var(--amber); animation: pulse 2s ease-in-out infinite; }
.dot.alert { background: var(--red); color: var(--red); animation: pulse 1s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }
.value { font-family: 'IBM Plex Mono', monospace; font-size: 1.5rem; font-weight: 600; }
.sub { font-size: 0.8rem; color: var(--dim); margin-top: 6px; font-family: 'IBM Plex Mono', monospace; }
.status-word { font-family: 'IBM Plex Mono', monospace; font-size: 1.5rem; font-weight: 700; }
.status-word.on { color: var(--green); }
.status-word.off { color: var(--dim); }
.btn-row { display: flex; gap: 8px; margin-top: auto; padding-top: 14px; }
button {
  flex: 1; font-family: 'IBM Plex Mono', monospace; font-size: 0.75rem;
  letter-spacing: 0.06em; text-transform: uppercase; padding: 9px 0;
  border-radius: 4px; border: 1px solid var(--line); background: #0d1117;
  color: var(--dim); cursor: pointer; transition: all 0.15s;
}
button:hover { border-color: var(--cyan); color: var(--cyan); }
.text-panel .value { font-size: 1rem; line-height: 1.5; font-family: 'IBM Plex Sans', sans-serif; font-weight: 400; }
.nasa-title { color: var(--cyan); font-family: 'IBM Plex Mono', monospace; font-weight: 600; margin-bottom: 6px; }
footer {
  position: sticky; bottom: 0; left: 0; right: 0;
  margin-top: 32px; margin-left: -24px; margin-right: -24px;
  padding: 12px 24px; text-align: center; color: var(--dim);
  font-family: 'IBM Plex Mono', monospace; font-size: 0.75rem;
  background: rgba(11,14,20,0.92); backdrop-filter: blur(6px);
  border-top: 1px solid var(--line);
}
body { padding-bottom: 0; }

.sim-btn.active-sim { border-color: var(--green); color: var(--green); background: rgba(0,255,156,0.08); }