/* Variables using strictly hex values.
  Established to maintain a mature, high-end 
  engineering aesthetic.
*/

:root {
 --bgMain: #0a0a0a;
 --bgCard: #141414;
 --borderSubtle: #222;
 --textPrimary: #fff;
 --textSecondary: #888;
 --accentPulse: #00ff41;
 --dimOverlay: #000;
 --transitionMain: 0.35s cubic-bezier(0.22, 1, 0.36, 1); 
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--bgMain);
  color: var(--textPrimary);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.5;
  overflow-x: hidden;
  min-height: 100vh;
}

/* App container using Flexbox for vertical alignment.
  Padding uses clamp() for modern fluidity.
*/
#appContainer {
  display: flex;
  flex-direction: column;
  /* min, preferred, max */
  padding: clamp(1rem, 5vw, 3rem);
  gap: 2rem;
}

#dashboardHeader {
  display: flex;
  /* IMPORTANT -- line 46 tells browser to take all space and shove it between first and last child
  #statusIndicator goes to the left, #brandLogo goes to the right of the header */
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--borderSubtle);
  padding-bottom: 1rem;
}

#brandLogo {
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  letter-spacing: 0.2rem;
  font-weight: 800;
}

/* Metric Grid using CSS Grid, avoiding media queries */
#telemetryGrid {
  display: grid;
  /* section becomes grid, repeat a column pattern, autofit and create as many columns in the section, at least
  280px wide at most 1 fraction of section */
  grid-template-columns: repeat(auto-fit, minmax(280px 1fr));
  gap: 1.5rem;
}

/* The Metric Card - Engineered for 3D Interaction.  Includes my signature 5% background dim pseudo-element */
.metricCard {
  background-color: var(--bgCard);
  border: 1px solid var(--borderSubtle);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: 
    transform var(--transitionMain), 
    border-color var(--transitionMain);
  will-change: transform;
}

.metricCard::before {
  content: "";
  position: absolute;
  inset: 0;
  background-color: var(--dimOverlay);
  opacity: 0;
  transition: opacity var(--transitionMain);
  z-index: -1;
}

.metricCard:hover::before {
  opacity: 0.05;
}

.metricCard:hover {
  border-color: var(--textSecondary);
}

.cardlabel {
  color: var(--textSecondary);
  font-size: 0.08rem;
  text-transform: uppercase;
  letter-spacing: 0.1rem;
  margin-bottom: 1rem;
}

.dataDisplay {
  display: flex;
  align-items: baseline;
  gap: 0.05rem;
}

.metricValue {
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 700;
  /* tabular-nums forces all numbers to have the exact same width (like a monospaced font, but only for the digits) */
  font-variant-numeric: tabular-nums;
}

.metricUnit {
  color: var(--textSecondary);
  font-size: 1rem;
}

/* Live Pulse Animation */
#livePulse {
  width: 10px;
  height: 10px;
  background-color: var(--accentPulse);
  border-radius: 50%;
  display: inline-block;
  margin-right: 0.5rem;
  box-shadow: 0 0 10px var(--accentPulse);
}