:root {
  --bg: #000;
  --fg: #fff;
  --neon: #C6FF3D;
  --o2-blue: #0019A5;
  --muted: #8a8a8a;
  --card: #0d0d0d;
  --border: #1d1d1d;
  --border-hover: #2a2a2a;
}

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

html, body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'Inter', system-ui, sans-serif;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
code { font-family: 'Space Grotesk', monospace; font-size: .85em; color: var(--muted); }

/* Topbar */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 32px;
  background: rgba(0,0,0,.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  font-family: 'Space Grotesk', sans-serif;
}
.brand { font-weight: 700; letter-spacing: .5px; font-size: 14px; }
.brand__dot { color: var(--neon); }
.meta { display: flex; align-items: center; gap: 16px; font-size: 13px; color: var(--muted); }
.updated { font-variant-numeric: tabular-nums; }

.ghost {
  background: transparent;
  border: 1px solid #333; color: #ddd;
  padding: 6px 14px; border-radius: 6px;
  font-size: 13px; font-family: 'Space Grotesk', sans-serif;
  cursor: pointer; transition: all .15s ease;
}
.ghost:hover { border-color: var(--neon); color: var(--neon); }

/* Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  padding: 28px 32px;
  max-width: 1600px;
  margin: 0 auto;
}
@media (max-width: 980px) {
  .grid { grid-template-columns: 1fr; padding: 20px; }
}

/* Platform card */
.platform {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px 24px 20px;
  display: flex; flex-direction: column;
  transition: border-color .2s ease;
}
.platform:hover { border-color: var(--border-hover); }

.platform__head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 20px;
}
.platform__name {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700; font-size: 16px; letter-spacing: .04em;
  text-transform: uppercase;
}
.platform__name .dot { color: var(--neon); margin-right: 8px; }
.platform__time {
  font-size: 11px; color: var(--muted);
  font-family: 'Space Grotesk', sans-serif;
  letter-spacing: .05em; text-transform: uppercase;
}

/* KPI tiles */
.kpis {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}
@media (max-width: 600px) {
  .kpis { grid-template-columns: repeat(2, 1fr); }
}

.kpi {
  background: #050505;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 14px 12px;
  display: flex; flex-direction: column; gap: 6px;
  min-height: 84px;
}
.kpi__label {
  font-size: 10px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--muted);
  font-family: 'Space Grotesk', sans-serif;
}
.kpi__value {
  font-size: 22px; font-weight: 800;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}
.kpi__value.neon { color: var(--neon); }
.kpi__delta {
  font-size: 11px; color: var(--muted);
  font-variant-numeric: tabular-nums;
  font-family: 'Space Grotesk', sans-serif;
}
.kpi__delta.up { color: var(--neon); }
.kpi__delta.down { color: #ff5577; }

/* Chart */
.chart-wrap {
  position: relative;
  height: 160px;
  margin-top: auto;
}
.chart-title {
  font-size: 11px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--muted);
  font-family: 'Space Grotesk', sans-serif;
  margin-bottom: 8px;
}

/* Error state */
.platform.error .kpi__value { color: #ff5577; font-size: 14px; }
.platform.error .chart-wrap { display: none; }
.platform__error {
  font-size: 12px; color: #ff5577;
  font-family: 'Space Grotesk', sans-serif;
  padding: 8px 0;
}

/* Footer */
.footer {
  display: flex; justify-content: space-between;
  padding: 24px 32px 32px;
  font-size: 11px; color: var(--muted);
  font-family: 'Space Grotesk', sans-serif;
  letter-spacing: .04em;
  border-top: 1px solid var(--border);
  margin-top: 20px;
  flex-wrap: wrap; gap: 12px;
}

/* Skeleton (während Daten laden) */
.skeleton {
  background: linear-gradient(90deg, #0a0a0a 0%, #1a1a1a 50%, #0a0a0a 100%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}