:root {
  --bg: #07111f;
  --bg-soft: #0d1b2d;
  --panel: rgba(14, 23, 35, 0.9);
  --panel-strong: rgba(18, 31, 46, 0.96);
  --line: rgba(148, 163, 184, 0.16);
  --text: #edf2ff;
  --muted: #a7b4c9;
  --primary: #6d7bff;
  --primary-2: #7dd3fc;
  --success: #34d399;
  --warning: #fbbf24;
  --danger: #f87171;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: "Segoe UI", Tahoma, sans-serif; background: var(--bg); color: var(--text); }
body {
  background:
    radial-gradient(circle at top, rgba(109, 123, 255, 0.18), transparent 30%),
    radial-gradient(circle at bottom right, rgba(125, 211, 252, 0.14), transparent 30%),
    var(--bg);
}

.demo-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 20px 80px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  background: rgba(16, 24, 39, 0.7);
  border: 1px solid var(--line);
  border-radius: 18px;
  backdrop-filter: blur(10px);
}

.brand {
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand span { color: var(--primary-2); }

.topbar-nav {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-size: 0.9rem;
}

.main-panel {
  margin-top: 36px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 25px 60px rgba(2, 6, 23, 0.45);
}

.hero {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 28px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.1rem, 4vw, 3.4rem);
  margin: 0 0 12px;
  letter-spacing: -0.04em;
}

.hero p {
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.8;
  margin: 0 0 18px;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 24px;
}

.pill {
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--text);
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.02);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cta-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  padding: 12px 18px;
  font-weight: 700;
  text-decoration: none;
  transition: 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #9b5de5);
  color: white;
  box-shadow: 0 14px 30px rgba(109, 123, 255, 0.28);
}

.btn-secondary {
  background: rgba(255,255,255,0.02);
  color: var(--text);
  border: 1px solid var(--line);
}

.preview-card {
  background: linear-gradient(180deg, rgba(17, 27, 39, 0.9), rgba(13, 27, 45, 0.9));
  border: 1px solid var(--line);
  border-radius: 22px;
  min-height: 330px;
  padding: 18px;
  position: relative;
  overflow: hidden;
}

.preview-card::before {
  content: "";
  position: absolute;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  right: -30px;
  top: -30px;
  background: radial-gradient(circle, rgba(109, 123, 255, 0.3), transparent 70%);
}

.screen {
  position: relative;
  z-index: 1;
  background: rgba(8, 14, 22, 0.8);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
  height: 100%;
}

.dashboard-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.dot-group {
  display: flex;
  gap: 8px;
}

.dot-group span {
  width: 10px;
  height: 10px;
  background: rgba(255,255,255,0.2);
  border-radius: 50%;
  display: inline-block;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

.metric-box {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
}

.metric-box small {
  display: block;
  color: var(--muted);
  margin-bottom: 8px;
}

.metric-box strong {
  font-size: 1.4rem;
}

.chart-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.chart-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255,255,255,0.02);
  padding: 12px;
}

.bar-chart {
  display: flex;
  align-items: end;
  height: 120px;
  gap: 12px;
  margin-top: 12px;
}

.bar {
  flex: 1;
  border-radius: 8px 8px 0 0;
  background: linear-gradient(180deg, var(--primary-2), var(--primary));
}

.skyline {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

.row {
  display: flex;
  gap: 12px;
  align-items: end;
}

.row span {
  display: inline-block;
  flex: 1;
  height: 30px;
  border-radius: 8px 8px 0 0;
  background: rgba(255,255,255,0.06);
}

.row span:nth-child(1) { height: 64px; }
.row span:nth-child(2) { height: 88px; }
.row span:nth-child(3) { height: 52px; }
.row span:nth-child(4) { height: 110px; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.stat-card {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px;
}

.stat-card h3 {
  margin: 0 0 8px;
  font-size: 0.8rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.stat-card strong {
  font-size: 2rem;
}

.stat-card p {
  margin: 10px 0 0;
  color: var(--muted);
}

@media (max-width: 768px) {
  .hero { grid-template-columns: 1fr; }
  .stats-grid, .metric-grid { grid-template-columns: 1fr; }
  .topbar { flex-direction: column; gap: 12px; }
  .topbar-nav { flex-wrap: wrap; justify-content: center; }
}