/*
 * DATACENTER THEME — hyperscale server farm aesthetic.
 *
 * Racks of blinking LEDs, organized cable raceways, cool aisle lighting,
 * patch panels and power distribution. Inspired by the visual language
 * of modern data centers.
 *
 * Usage:
 *   <link rel="stylesheet" href="datacenter-theme.css">
 *   <canvas id="dc-canvas"></canvas>             <!-- optional: aisle bg -->
 *   <script src="datacenter-aisle.js"></script>  <!-- powers the canvas -->
 *
 * All classes prefixed with `dc-` to avoid collisions.
 * Colors live as :root variables so they can be overridden.
 */

/* ═══════════════════════════════════════════════════════════════
   FONTS — self-hosted, no external dependencies
   ═══════════════════════════════════════════════════════════════ */

@font-face {
  font-family: 'Orbitron';
  font-style: normal;
  font-weight: 400 900;
  font-display: swap;
  src: url(fonts/orbitron-latin.woff2) format('woff2');
}

@font-face {
  font-family: 'Share Tech Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(fonts/share-tech-mono-latin.woff2) format('woff2');
}


/* ═══════════════════════════════════════════════════════════════
   COLOR PALETTE — server LED cyan, status green, signal amber,
   RGB-strip violet, on a near-black slate.
   ═══════════════════════════════════════════════════════════════ */

:root {
  /* ── Primary cyan (the dominant rack LED color) ───────────── */
  --dc-cyan:            #5DD8FF;
  --dc-cyan-bright:     #B8ECFF;
  --dc-cyan-dim:        #3A8FB8;
  --dc-cyan-dark:       #082030;

  /* ── Status green (link / power good) ─────────────────────── */
  --dc-green:           #5AFFAB;
  --dc-green-dim:       #2EAA70;

  /* ── Signal amber (activity / warning) ────────────────────── */
  --dc-amber:           #FFB347;
  --dc-amber-dim:       #B07A1F;

  /* ── Cool RGB violet (overhead aisle lighting) ───────────── */
  --dc-violet:          #B984FF;
  --dc-violet-dim:      #6E4FA8;

  /* ── Fault red ────────────────────────────────────────────── */
  --dc-red:             #FF4060;
  --dc-red-dim:         #B02038;

  /* ── Backgrounds ──────────────────────────────────────────── */
  --dc-bg:              #050810;
  --dc-bg-2:            #07101C;
  --dc-bg-3:            #0A1626;
  --dc-panel:           #060D18;
  --dc-panel-tint:      rgba(93, 216, 255, 0.04);

  /* ── Borders ──────────────────────────────────────────────── */
  --dc-border:          rgba(93, 216, 255, 0.2);
  --dc-border-bright:   rgba(93, 216, 255, 0.5);
  --dc-border-amber:    rgba(255, 179, 71, 0.3);
  --dc-border-red:      rgba(255, 64, 96, 0.3);

  /* ── Text ─────────────────────────────────────────────────── */
  --dc-text:            #B8D8E8;
  --dc-text-dim:        #506C82;

  /* ── Semantic ─────────────────────────────────────────────── */
  --dc-success:         #5AFFAB;
  --dc-danger:          #FF4060;
  --dc-warning:         #FFB347;
  --dc-info:            #5DD8FF;
  --dc-muted:           #506074;

  /* ── Typography ───────────────────────────────────────────── */
  --dc-font-display:    'Orbitron', sans-serif;
  --dc-font-mono:       'Share Tech Mono', monospace;

  /* ── Effects ──────────────────────────────────────────────── */
  --dc-glow-cyan:       0 0 14px rgba(93, 216, 255, 0.6), 0 0 38px rgba(93, 216, 255, 0.18);
  --dc-glow-green:      0 0 14px rgba(90, 255, 171, 0.6), 0 0 38px rgba(90, 255, 171, 0.18);
  --dc-glow-amber:      0 0 14px rgba(255, 179, 71, 0.6), 0 0 38px rgba(255, 179, 71, 0.18);
  --dc-glow-violet:     0 0 14px rgba(185, 132, 255, 0.6), 0 0 38px rgba(185, 132, 255, 0.18);
  --dc-glow-red:        0 0 14px rgba(255, 64, 96, 0.6), 0 0 38px rgba(255, 64, 96, 0.18);
  --dc-scanline-opacity: 0.07;
  --dc-aisle-opacity:    0.5;
}


/* ═══════════════════════════════════════════════════════════════
   RESET + BASE
   ═══════════════════════════════════════════════════════════════ */

.dc-reset *,
.dc-reset *::before,
.dc-reset *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.dc-base {
  background: var(--dc-bg);
  color: var(--dc-text);
  font-family: var(--dc-font-mono);
  min-height: 100vh;
  overflow-x: hidden;
}


/* ═══════════════════════════════════════════════════════════════
   AISLE CANVAS — perspective rack aisle background
   ═══════════════════════════════════════════════════════════════ */

.dc-aisle-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  opacity: var(--dc-aisle-opacity);
  pointer-events: none;
  z-index: 0;
}


/* ═══════════════════════════════════════════════════════════════
   SCANLINES OVERLAY — subtle horizontal banding like a server
   monitoring console feed
   ═══════════════════════════════════════════════════════════════ */

.dc-scanlines::after {
  content: '';
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, var(--dc-scanline-opacity)) 2px,
    rgba(0, 0, 0, var(--dc-scanline-opacity)) 4px
  );
  pointer-events: none;
  z-index: 1;
}


/* ═══════════════════════════════════════════════════════════════
   COOLING HAZE — soft blue glow at top, suggesting CRAC/cold aisle
   ═══════════════════════════════════════════════════════════════ */

.dc-cool-haze::before {
  content: '';
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 220px;
  background: linear-gradient(180deg, rgba(93, 216, 255, 0.08), transparent);
  pointer-events: none;
  z-index: 1;
}


/* ═══════════════════════════════════════════════════════════════
   CONTENT CONTAINER
   ═══════════════════════════════════════════════════════════════ */

.dc-app {
  position: relative;
  z-index: 2;
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 16px 40px;
}


/* ═══════════════════════════════════════════════════════════════
   TYPOGRAPHY
   ═══════════════════════════════════════════════════════════════ */

.dc-display {
  font-family: var(--dc-font-display);
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--dc-cyan);
}

.dc-title {
  font-family: var(--dc-font-display);
  font-size: 28px;
  font-weight: 900;
  color: var(--dc-cyan);
  text-shadow: var(--dc-glow-cyan);
  letter-spacing: 4px;
  line-height: 1;
}

.dc-title .dc-accent { color: var(--dc-green);  text-shadow: var(--dc-glow-green); }
.dc-title .dc-amber  { color: var(--dc-amber);  text-shadow: var(--dc-glow-amber); }
.dc-title .dc-violet { color: var(--dc-violet); text-shadow: var(--dc-glow-violet); }

.dc-subtitle {
  font-size: 10px;
  color: var(--dc-cyan-dim);
  letter-spacing: 6px;
  text-transform: uppercase;
}

.dc-heading {
  font-family: var(--dc-font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--dc-cyan);
}

.dc-dim { color: var(--dc-text-dim); }


/* ═══════════════════════════════════════════════════════════════
   PANELS + CARDS — top "1U LED strip" + corner rack-mount
   screws as decoration
   ═══════════════════════════════════════════════════════════════ */

.dc-panel {
  background: var(--dc-panel);
  border: 1px solid var(--dc-border);
  position: relative;
  overflow: visible;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.dc-panel:hover {
  border-color: var(--dc-border-bright);
}

/* Top LED-strip glow line — hidden by default, visible on hover/active */
.dc-panel::before {
  content: '';
  position: absolute;
  top: -1px; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent,
    var(--dc-cyan),
    var(--dc-green),
    var(--dc-cyan),
    transparent);
  opacity: 0;
  transition: opacity 0.25s;
  box-shadow: 0 0 8px var(--dc-cyan);
  pointer-events: none;
}

.dc-panel:hover::before,
.dc-panel.dc-active::before {
  opacity: 1;
}

/* Rack-mount screw dots — top-left and top-right */
.dc-panel::after {
  content: '';
  position: absolute;
  top: 4px; left: 5px;
  width: 3px; height: 3px;
  border-radius: 50%;
  background: var(--dc-cyan-dim);
  box-shadow:
    calc(100% + 2px) 0 0 -1px var(--dc-cyan-dim),
    0 0 4px rgba(93, 216, 255, 0.3);
  opacity: 0.5;
  pointer-events: none;
}

.dc-panel.dc-active::after {
  opacity: 1;
  background: var(--dc-cyan);
}

.dc-panel.dc-amber {
  border-color: var(--dc-border-amber);
}
.dc-panel.dc-amber::before {
  background: linear-gradient(90deg,
    transparent, var(--dc-amber), var(--dc-amber-dim), var(--dc-amber), transparent);
  box-shadow: 0 0 8px var(--dc-amber);
}
.dc-panel.dc-amber::after { background: var(--dc-amber-dim); }

.dc-panel.dc-red {
  border-color: var(--dc-border-red);
}
.dc-panel.dc-red::before {
  background: linear-gradient(90deg,
    transparent, var(--dc-red), #FF8090, var(--dc-red), transparent);
  box-shadow: 0 0 8px var(--dc-red);
}
.dc-panel.dc-red::after { background: var(--dc-red-dim); }

.dc-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  background: var(--dc-panel-tint);
  border-bottom: 1px solid var(--dc-border);
  flex-wrap: wrap;
  gap: 8px;
}

.dc-panel-body {
  padding: 16px;
}

/* Glass overlay panel (frosted, for floating UI) */
.dc-glass {
  background: rgba(7, 16, 28, 0.86);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border: 1px solid var(--dc-border);
  position: relative;
}


/* ═══════════════════════════════════════════════════════════════
   SERVER RACK — vertical column of "U" units with status LEDs.
   Iconic data center component.
   ═══════════════════════════════════════════════════════════════ */

.dc-rack {
  display: inline-block;
  background: linear-gradient(180deg, #0A1626 0%, #060D18 100%);
  border: 1px solid var(--dc-border);
  padding: 8px 6px 6px;
  position: relative;
  width: 220px;
  vertical-align: top;
}

/* Top "rack frame" header bar */
.dc-rack-label {
  font-family: var(--dc-font-display);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--dc-cyan-dim);
  text-align: center;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--dc-border);
  margin-bottom: 6px;
  text-transform: uppercase;
}

/* A single rack unit — 1U sliver with bezel + LED row */
.dc-rack-unit {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 6px;
  margin-bottom: 2px;
  background: linear-gradient(180deg, #111E30 0%, #0A1422 100%);
  border: 1px solid rgba(93, 216, 255, 0.08);
  border-left: 2px solid var(--dc-cyan-dim);
  font-size: 9px;
  letter-spacing: 1px;
  color: var(--dc-text-dim);
  position: relative;
  height: 18px;
}

.dc-rack-unit.dc-active {
  border-left-color: var(--dc-cyan);
  color: var(--dc-cyan);
  background: linear-gradient(180deg, #122538 0%, #0B1828 100%);
  box-shadow: inset 0 0 8px rgba(93, 216, 255, 0.06);
}

.dc-rack-unit.dc-fault {
  border-left-color: var(--dc-red);
  color: var(--dc-red-dim);
}

.dc-rack-unit-label {
  flex: 1;
  font-family: var(--dc-font-mono);
  font-size: 9px;
  letter-spacing: 1px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* LED bank inside a rack unit — 2-6 tiny dots */
.dc-led-row {
  display: flex;
  gap: 2px;
}

.dc-led {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #1a2838;
  box-shadow: inset 0 0 1px rgba(0,0,0,0.6);
}

.dc-led.dc-on        { background: var(--dc-cyan);   box-shadow: 0 0 4px var(--dc-cyan); }
.dc-led.dc-on-green  { background: var(--dc-green);  box-shadow: 0 0 4px var(--dc-green); }
.dc-led.dc-on-amber  { background: var(--dc-amber);  box-shadow: 0 0 4px var(--dc-amber); }
.dc-led.dc-on-red    { background: var(--dc-red);    box-shadow: 0 0 4px var(--dc-red); }
.dc-led.dc-on-violet { background: var(--dc-violet); box-shadow: 0 0 4px var(--dc-violet); }

.dc-led.dc-blink         { animation: dc-blink 1.4s ease-in-out infinite; }
.dc-led.dc-blink-fast    { animation: dc-blink 0.55s ease-in-out infinite; }
.dc-led.dc-blink-slow    { animation: dc-blink 2.6s ease-in-out infinite; }
.dc-led.dc-blink-offset  { animation: dc-blink 1.4s ease-in-out infinite; animation-delay: 0.7s; }

/* Rack-ear screw dots at four corners of the rack frame */
.dc-rack::before,
.dc-rack::after {
  content: '';
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #5a7088, #1a2838);
  box-shadow: 0 0 0 1px rgba(0,0,0,0.6);
}
.dc-rack::before { top: 4px;  left: 4px; }
.dc-rack::after  { top: 4px;  right: 4px; }


/* ═══════════════════════════════════════════════════════════════
   PATCH PANEL — grid of network ports with link/activity LEDs.
   ═══════════════════════════════════════════════════════════════ */

.dc-patch-panel {
  background: linear-gradient(180deg, #0C1828 0%, #060D18 100%);
  border: 1px solid var(--dc-border);
  padding: 10px 8px;
  position: relative;
}

.dc-patch-panel-label {
  font-family: var(--dc-font-display);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--dc-cyan-dim);
  text-transform: uppercase;
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.dc-port-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 3px;
}

.dc-port {
  position: relative;
  aspect-ratio: 1;
  background: linear-gradient(180deg, #1a2838 0%, #0a1422 100%);
  border: 1px solid rgba(93, 216, 255, 0.12);
  border-radius: 1px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 1px;
}

/* Port "RJ45 slot" — inner notch */
.dc-port::before {
  content: '';
  position: absolute;
  top: 2px; left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 30%;
  background: #02060c;
  border-radius: 0 0 1px 1px;
}

/* Port LED at the bottom of each port */
.dc-port::after {
  content: '';
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: #1a2838;
  position: relative;
  z-index: 1;
}

.dc-port.dc-link::after    { background: var(--dc-green);  box-shadow: 0 0 3px var(--dc-green); }
.dc-port.dc-active::after  { background: var(--dc-amber);  box-shadow: 0 0 3px var(--dc-amber); animation: dc-blink 0.4s ease-in-out infinite; }
.dc-port.dc-fault::after   { background: var(--dc-red);    box-shadow: 0 0 3px var(--dc-red); }
.dc-port.dc-cyan::after    { background: var(--dc-cyan);   box-shadow: 0 0 3px var(--dc-cyan); }


/* ═══════════════════════════════════════════════════════════════
   PDU — power distribution unit. Horizontal strip with breakers.
   ═══════════════════════════════════════════════════════════════ */

.dc-pdu {
  display: flex;
  align-items: stretch;
  background: linear-gradient(180deg, #0A1422 0%, #050810 100%);
  border: 1px solid var(--dc-border);
  padding: 6px 8px;
  gap: 6px;
  position: relative;
}

.dc-pdu-label {
  font-family: var(--dc-font-display);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--dc-cyan-dim);
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  padding: 0 8px;
  border-right: 1px solid var(--dc-border);
  text-transform: uppercase;
  min-width: 60px;
}

.dc-pdu-load {
  font-family: var(--dc-font-display);
  font-size: 14px;
  color: var(--dc-amber);
  text-shadow: 0 0 6px rgba(255, 179, 71, 0.5);
  line-height: 1;
  margin-top: 3px;
}

.dc-pdu-outlets {
  display: flex;
  flex: 1;
  gap: 4px;
}

.dc-pdu-outlet {
  flex: 1;
  background: linear-gradient(180deg, #1a2838 0%, #0a1422 100%);
  border: 1px solid rgba(93, 216, 255, 0.12);
  position: relative;
  min-height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Outlet "C13 socket" — three pin holes */
.dc-pdu-outlet::before {
  content: '';
  width: 60%;
  height: 60%;
  background:
    radial-gradient(circle at 30% 35%, #02060c 1px, transparent 1.5px),
    radial-gradient(circle at 70% 35%, #02060c 1px, transparent 1.5px),
    radial-gradient(circle at 50% 70%, #02060c 1px, transparent 1.5px);
}

/* Power LED at the side */
.dc-pdu-outlet::after {
  content: '';
  position: absolute;
  top: 3px; right: 3px;
  width: 3px; height: 3px;
  border-radius: 50%;
  background: var(--dc-green);
  box-shadow: 0 0 3px var(--dc-green);
}

.dc-pdu-outlet.dc-fault::after { background: var(--dc-red); box-shadow: 0 0 3px var(--dc-red); animation: dc-blink 0.6s ease-in-out infinite; }
.dc-pdu-outlet.dc-off::after   { background: #1a2838; box-shadow: none; }


/* ═══════════════════════════════════════════════════════════════
   GENERATOR GAUGE — circular dial for backup power readouts.
   ═══════════════════════════════════════════════════════════════ */

.dc-gauge {
  width: 110px;
  height: 110px;
  position: relative;
  display: inline-block;
}

.dc-gauge-bg {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background:
    radial-gradient(circle, var(--dc-bg-2) 0%, var(--dc-bg) 100%);
  border: 2px solid var(--dc-border);
  box-shadow: inset 0 0 16px rgba(0,0,0,0.6);
}

/* Inner ring with tick marks via repeating gradient */
.dc-gauge-ticks {
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  background:
    repeating-conic-gradient(
      var(--dc-cyan-dim) 0deg 1deg,
      transparent 1deg 12deg
    );
  -webkit-mask: radial-gradient(circle, transparent 38%, #000 38%, #000 50%, transparent 50%);
          mask: radial-gradient(circle, transparent 38%, #000 38%, #000 50%, transparent 50%);
  opacity: 0.6;
}

.dc-gauge-arc {
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: conic-gradient(
    from 135deg,
    var(--dc-green) 0deg,
    var(--dc-green) calc(var(--dc-fill, 60) * 2.7deg),
    transparent calc(var(--dc-fill, 60) * 2.7deg),
    transparent 270deg,
    transparent 360deg
  );
  -webkit-mask: radial-gradient(circle, transparent 60%, #000 60%, #000 72%, transparent 72%);
          mask: radial-gradient(circle, transparent 60%, #000 60%, #000 72%, transparent 72%);
  filter: drop-shadow(0 0 6px rgba(90, 255, 171, 0.5));
}

.dc-gauge.dc-warn .dc-gauge-arc {
  background: conic-gradient(
    from 135deg,
    var(--dc-amber) 0deg,
    var(--dc-amber) calc(var(--dc-fill, 60) * 2.7deg),
    transparent calc(var(--dc-fill, 60) * 2.7deg)
  );
  filter: drop-shadow(0 0 6px rgba(255, 179, 71, 0.5));
}

.dc-gauge.dc-fault .dc-gauge-arc {
  background: conic-gradient(
    from 135deg,
    var(--dc-red) 0deg,
    var(--dc-red) calc(var(--dc-fill, 60) * 2.7deg),
    transparent calc(var(--dc-fill, 60) * 2.7deg)
  );
  filter: drop-shadow(0 0 6px rgba(255, 64, 96, 0.5));
}

.dc-gauge-readout {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.dc-gauge-value {
  font-family: var(--dc-font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--dc-cyan);
  text-shadow: var(--dc-glow-cyan);
  line-height: 1;
}

.dc-gauge-unit {
  font-size: 8px;
  color: var(--dc-text-dim);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-top: 3px;
}

.dc-gauge-label {
  font-family: var(--dc-font-display);
  font-size: 8px;
  color: var(--dc-cyan-dim);
  letter-spacing: 2px;
  text-transform: uppercase;
  position: absolute;
  bottom: 14px;
  left: 0; right: 0;
  text-align: center;
}


/* ═══════════════════════════════════════════════════════════════
   BADGES + CHIPS — "rack-ear" notched shape.
   ═══════════════════════════════════════════════════════════════ */

.dc-badge {
  font-family: var(--dc-font-display);
  font-size: 9px;
  font-weight: 700;
  padding: 3px 12px;
  letter-spacing: 1px;
  display: inline-block;
  /* Rack-ear: notched both sides */
  clip-path: polygon(
    4px 0%, calc(100% - 4px) 0%,
    100% 25%, 100% 75%,
    calc(100% - 4px) 100%, 4px 100%,
    0% 75%, 0% 25%
  );
}

.dc-badge-cyan   { background: var(--dc-cyan);    color: #000; }
.dc-badge-green  { background: var(--dc-green);   color: #000; }
.dc-badge-amber  { background: var(--dc-amber);   color: #000; }
.dc-badge-violet { background: var(--dc-violet);  color: #000; }
.dc-badge-red    { background: var(--dc-red);     color: #fff; }

.dc-badge-lg {
  font-size: 11px;
  padding: 4px 16px;
  letter-spacing: 2px;
  clip-path: polygon(
    5px 0%, calc(100% - 5px) 0%,
    100% 25%, 100% 75%,
    calc(100% - 5px) 100%, 5px 100%,
    0% 75%, 0% 25%
  );
}

.dc-chip {
  font-size: 10px;
  letter-spacing: 1px;
  color: var(--dc-text-dim);
  background: rgba(93, 216, 255, 0.05);
  border: 1px solid rgba(93, 216, 255, 0.18);
  padding: 2px 8px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.dc-chip.dc-green  { color: var(--dc-green);  border-color: rgba(90, 255, 171, 0.25); }
.dc-chip.dc-amber  { color: var(--dc-amber);  border-color: rgba(255, 179, 71, 0.25); }
.dc-chip.dc-violet { color: var(--dc-violet); border-color: rgba(185, 132, 255, 0.25); }
.dc-chip.dc-red    { color: var(--dc-red);    border-color: rgba(255, 64, 96, 0.25); }


/* ═══════════════════════════════════════════════════════════════
   TABS — patch-panel "port" chamfered shape.
   ═══════════════════════════════════════════════════════════════ */

.dc-tab-bar {
  display: flex;
  gap: 2px;
  border-bottom: 1px solid var(--dc-border);
  flex-wrap: wrap;
}

.dc-tab {
  font-family: var(--dc-font-display);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  padding: 10px 22px;
  border: 1px solid transparent;
  border-bottom: none;
  cursor: pointer;
  text-transform: uppercase;
  transition: all 0.15s;
  color: var(--dc-text-dim);
  background: transparent;
  position: relative;
  bottom: -1px;
  /* Chamfered top corners + flat bottom */
  clip-path: polygon(
    6px 0%, calc(100% - 6px) 0%,
    100% 40%, 100% 100%,
    0% 100%, 0% 40%
  );
}

.dc-tab:hover {
  color: var(--dc-cyan);
  border-color: var(--dc-border);
  background: var(--dc-panel-tint);
}

.dc-tab.dc-active {
  color: #000;
  background: var(--dc-cyan);
  border-color: var(--dc-cyan);
}


/* ═══════════════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════════════ */

.dc-btn {
  display: inline-block;
  font-family: var(--dc-font-display);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  padding: 8px 22px;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
  border: 1px solid var(--dc-border);
  background: transparent;
  color: var(--dc-text-dim);
  position: relative;
}

.dc-btn:hover {
  color: var(--dc-cyan);
  background: var(--dc-panel-tint);
  border-color: var(--dc-border-bright);
  box-shadow: var(--dc-glow-cyan);
}

.dc-btn.dc-primary {
  background: var(--dc-cyan);
  color: #000;
  border-color: var(--dc-cyan);
}
.dc-btn.dc-primary:hover {
  background: var(--dc-cyan-bright);
  box-shadow: var(--dc-glow-cyan);
}

.dc-btn.dc-success {
  border-color: rgba(90, 255, 171, 0.3);
  color: var(--dc-green-dim);
}
.dc-btn.dc-success:hover {
  color: #000;
  background: var(--dc-green);
  border-color: var(--dc-green);
  box-shadow: var(--dc-glow-green);
}

.dc-btn.dc-danger {
  border-color: var(--dc-border-red);
  color: var(--dc-red-dim);
}
.dc-btn.dc-danger:hover {
  color: var(--dc-red);
  background: rgba(255, 64, 96, 0.08);
  border-color: var(--dc-red);
  box-shadow: var(--dc-glow-red);
}


/* ═══════════════════════════════════════════════════════════════
   SECTION HEADERS
   ═══════════════════════════════════════════════════════════════ */

.dc-section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding: 12px 16px;
  background: linear-gradient(90deg, rgba(93, 216, 255, 0.1), transparent);
  border-left: 3px solid var(--dc-cyan);
}

.dc-section-header.dc-amber {
  background: linear-gradient(90deg, rgba(255, 179, 71, 0.1), transparent);
  border-left-color: var(--dc-amber);
}

.dc-section-header.dc-red {
  background: linear-gradient(90deg, rgba(255, 64, 96, 0.1), transparent);
  border-left-color: var(--dc-red);
}

.dc-section-title {
  font-family: var(--dc-font-display);
  font-size: 11px;
  font-weight: 700;
  color: var(--dc-cyan-dim);
  letter-spacing: 3px;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}

.dc-section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--dc-border);
}


/* ═══════════════════════════════════════════════════════════════
   DATA FIELDS
   ═══════════════════════════════════════════════════════════════ */

.dc-field {
  background: rgba(93, 216, 255, 0.03);
  border: 1px solid rgba(93, 216, 255, 0.1);
  padding: 8px 10px;
}

.dc-field-label {
  font-size: 10px;
  color: var(--dc-text-dim);
  letter-spacing: 2px;
  text-transform: uppercase;
  display: block;
  margin-bottom: 3px;
}

.dc-field-value {
  font-size: 12px;
  color: var(--dc-text);
  font-weight: 600;
}

.dc-field-value.dc-cyan {
  color: var(--dc-cyan);
  font-family: var(--dc-font-display);
  font-size: 11px;
}

.dc-field-value.dc-green {
  color: var(--dc-green);
  font-family: var(--dc-font-display);
  font-size: 11px;
}

.dc-field-value.dc-amber {
  color: var(--dc-amber);
  font-family: var(--dc-font-display);
  font-size: 11px;
}


/* ═══════════════════════════════════════════════════════════════
   STAT BARS
   ═══════════════════════════════════════════════════════════════ */

.dc-stat-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 7px;
}

.dc-stat-label {
  font-size: 11px;
  color: var(--dc-text-dim);
  letter-spacing: 1px;
  width: 100px;
  flex-shrink: 0;
  text-align: right;
}

.dc-stat-track {
  flex: 1;
  height: 6px;
  background: rgba(93, 216, 255, 0.06);
  border: 1px solid rgba(93, 216, 255, 0.12);
  position: relative;
  overflow: hidden;
}

.dc-stat-fill {
  height: 100%;
  background: var(--dc-cyan);
  transition: width 0.5s ease;
  box-shadow: 0 0 6px rgba(93, 216, 255, 0.5);
}

.dc-stat-fill.dc-green  { background: var(--dc-green);  box-shadow: 0 0 6px rgba(90, 255, 171, 0.5); }
.dc-stat-fill.dc-amber  { background: var(--dc-amber);  box-shadow: 0 0 6px rgba(255, 179, 71, 0.5); }
.dc-stat-fill.dc-violet { background: var(--dc-violet); box-shadow: 0 0 6px rgba(185, 132, 255, 0.5); }
.dc-stat-fill.dc-red    { background: var(--dc-red);    box-shadow: 0 0 6px rgba(255, 64, 96, 0.5); }

.dc-stat-value {
  font-family: var(--dc-font-display);
  font-size: 9px;
  color: var(--dc-cyan);
  width: 50px;
  flex-shrink: 0;
}


/* ═══════════════════════════════════════════════════════════════
   TABLES
   ═══════════════════════════════════════════════════════════════ */

.dc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
}

.dc-table th {
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--dc-text-dim);
  text-transform: uppercase;
  padding: 5px 8px;
  text-align: left;
  border-bottom: 1px solid var(--dc-border);
  font-weight: 400;
}

.dc-table td {
  padding: 6px 8px;
  border-bottom: 1px solid rgba(93, 216, 255, 0.05);
  vertical-align: top;
  line-height: 1.4;
}

.dc-table tr:hover td {
  background: rgba(93, 216, 255, 0.04);
}


/* ═══════════════════════════════════════════════════════════════
   STATUS INDICATORS
   ═══════════════════════════════════════════════════════════════ */

.dc-status-bar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 8px 0;
  font-size: 10px;
  color: var(--dc-text-dim);
  letter-spacing: 2px;
  flex-wrap: wrap;
}

.dc-status-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--dc-cyan);
  box-shadow: 0 0 8px var(--dc-cyan);
  animation: dc-blink 1.5s ease-in-out infinite;
}

.dc-status-dot.dc-green  { background: var(--dc-green);  box-shadow: 0 0 8px var(--dc-green); }
.dc-status-dot.dc-amber  { background: var(--dc-amber);  box-shadow: 0 0 8px var(--dc-amber); }
.dc-status-dot.dc-violet { background: var(--dc-violet); box-shadow: 0 0 8px var(--dc-violet); }
.dc-status-dot.dc-red    { background: var(--dc-red);    box-shadow: 0 0 8px var(--dc-red); }


/* ═══════════════════════════════════════════════════════════════
   DIVIDERS — including a "cable raceway" variant inspired by
   organized bundles of wiring with ferrule labels.
   ═══════════════════════════════════════════════════════════════ */

.dc-divider {
  height: 1px;
  background: linear-gradient(90deg,
    transparent,
    var(--dc-cyan),
    var(--dc-green),
    var(--dc-cyan),
    transparent);
  margin: 20px 0;
}

.dc-divider-dim {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--dc-cyan-dim), transparent);
  margin: 20px 0;
  opacity: 0.35;
}

.dc-divider.dc-amber {
  background: linear-gradient(90deg, transparent, var(--dc-amber), var(--dc-amber-dim), var(--dc-amber), transparent);
}

.dc-divider.dc-red {
  background: linear-gradient(90deg, transparent, var(--dc-red), #FF8090, var(--dc-red), transparent);
}

/* Cable raceway divider — three parallel "cables" with band markers */
.dc-divider-raceway {
  position: relative;
  height: 14px;
  margin: 24px 0;
  padding: 2px 0;
  border-top: 1px solid rgba(93, 216, 255, 0.08);
  border-bottom: 1px solid rgba(93, 216, 255, 0.08);
  background:
    linear-gradient(180deg,
      transparent 0%,
      rgba(93, 216, 255, 0.05) 50%,
      transparent 100%);
}

/* Three stacked cables */
.dc-divider-raceway::before,
.dc-divider-raceway::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--dc-cyan) 8%,
    var(--dc-cyan) 20%,
    var(--dc-green) 20%,
    var(--dc-green) 32%,
    var(--dc-cyan) 32%,
    var(--dc-cyan) 48%,
    var(--dc-amber) 48%,
    var(--dc-amber) 60%,
    var(--dc-cyan) 60%,
    var(--dc-cyan) 80%,
    var(--dc-violet) 80%,
    var(--dc-violet) 92%,
    transparent 100%);
  opacity: 0.5;
  border-radius: 1px;
}

.dc-divider-raceway::before { top: 3px; }
.dc-divider-raceway::after  { bottom: 3px; }


/* ═══════════════════════════════════════════════════════════════
   COUNTDOWN / NUMERIC DISPLAYS — styled like a rack-mount LCD
   ═══════════════════════════════════════════════════════════════ */

.dc-countdown {
  display: flex;
  gap: 8px;
}

.dc-cd-unit {
  text-align: center;
  background: linear-gradient(180deg, var(--dc-bg-3) 0%, var(--dc-bg-2) 100%);
  border: 1px solid var(--dc-border);
  padding: 8px 14px 6px;
  position: relative;
}

/* Tiny "screw" dots in the corners */
.dc-cd-unit::before {
  content: '';
  position: absolute;
  top: 3px; left: 3px;
  width: 2px; height: 2px;
  border-radius: 50%;
  background: var(--dc-cyan-dim);
  box-shadow: 200% 0 0 0 var(--dc-cyan-dim);
}

.dc-cd-num {
  font-family: var(--dc-font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--dc-cyan);
  text-shadow: 0 0 10px rgba(93, 216, 255, 0.5);
  display: block;
  line-height: 1;
}

.dc-cd-label {
  font-size: 7px;
  color: var(--dc-text-dim);
  letter-spacing: 2px;
  margin-top: 3px;
  display: block;
}


/* ═══════════════════════════════════════════════════════════════
   SCROLLBAR
   ═══════════════════════════════════════════════════════════════ */

.dc-base::-webkit-scrollbar,
.dc-scrollbar::-webkit-scrollbar { width: 6px; }

.dc-base::-webkit-scrollbar-track,
.dc-scrollbar::-webkit-scrollbar-track { background: var(--dc-bg); }

.dc-base::-webkit-scrollbar-thumb,
.dc-scrollbar::-webkit-scrollbar-thumb { background: var(--dc-cyan-dim); }

.dc-base::-webkit-scrollbar-thumb:hover,
.dc-scrollbar::-webkit-scrollbar-thumb:hover { background: var(--dc-cyan); }


/* ═══════════════════════════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════════════════════════ */

@keyframes dc-blink {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.15; }
}

@keyframes dc-pulse {
  0%   { opacity: 0.4; }
  50%  { opacity: 1; }
  100% { opacity: 0.4; }
}

/* "Rackpulse" — title flicker like a server LED chain */
@keyframes dc-rackpulse {
  0%, 18%, 22%, 70%, 100% { filter: none; opacity: 1; }
  20%                     { filter: brightness(1.4); opacity: 0.92; }
  72%                     { filter: brightness(0.7); opacity: 0.88; }
  76%                     { filter: brightness(1.3); opacity: 1; }
}

@keyframes dc-trace {
  0%   { left: -60px; opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { left: 100%; opacity: 0; }
}

@keyframes dc-slide-down {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes dc-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.dc-rackpulse { animation: dc-rackpulse 8s ease-in-out infinite; }
.dc-pulse     { animation: dc-pulse 4s linear infinite; }
.dc-slide-in  { animation: dc-slide-down 0.2s ease; }
.dc-fade-in   { animation: dc-fade-in 0.4s ease; }

/* Data packet trace running along a divider */
.dc-divider.dc-traced {
  position: relative;
  overflow: visible;
}

.dc-divider.dc-traced::after {
  content: '';
  position: absolute;
  top: -3px;
  left: -60px;
  width: 80px;
  height: 7px;
  background: radial-gradient(ellipse, rgba(255, 255, 255, 0.95) 0%, rgba(93, 216, 255, 0.65) 35%, transparent 70%);
  border-radius: 50%;
  animation: dc-trace 3.5s linear infinite;
}


/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════ */

@media (max-width: 768px) {
  .dc-title    { font-size: 20px; letter-spacing: 2px; }
  .dc-heading  { font-size: 11px; letter-spacing: 2px; }
  .dc-rack     { width: 100%; }
  .dc-port-grid { grid-template-columns: repeat(8, 1fr); }
}