:root {
  --bg: #0f172a;
  --panel: #111827;
  --primary: #2563eb;
  --secondary: #7c3aed;
  --danger: #dc2626;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --success: #22c55e;
  --shadow: rgba(15, 23, 42, 0.4);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  font-family: Arial, Helvetica, sans-serif;
  background: linear-gradient(135deg, #020817, #111827 45%, #0f172a);
  color: var(--text);
}

.container {
  width: min(900px, 92vw);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.card {
  background: rgba(17, 24, 39, 0.92);
  border: 1px solid rgba(148, 163, 184, 0.15);
  border-radius: 18px;
  padding: 28px;
  box-shadow: 0 18px 40px var(--shadow);
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 0.72rem;
  letter-spacing: 0.12rem;
  text-transform: uppercase;
  color: var(--muted);
}

h1, h2, h3, p {
  margin-top: 0;
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: 10px;
}

.subtitle {
  color: var(--muted);
  margin-bottom: 20px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.btn {
  border: none;
  border-radius: 12px;
  padding: 12px 18px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #3b82f6);
  color: white;
}

.btn-ghost {
  background: rgba(148, 163, 184, 0.08);
  color: var(--text);
  border: 1px solid rgba(148, 163, 184, 0.12);
}

.btn-danger {
  background: linear-gradient(135deg, #ef4444, var(--danger));
  color: white;
  margin-top: 18px;
}

.status {
  border-radius: 12px;
  padding: 12px 14px;
  font-weight: 600;
  margin-bottom: 18px;
}

.status-offline {
  background: rgba(245, 158, 11, 0.12);
  color: #fcd34d;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.status-online {
  background: rgba(34, 197, 94, 0.1);
  color: #86efac;
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.profile {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  border-radius: 14px;
  background: rgba(31, 41, 55, 0.9);
}

.avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.hidden {
  display: none;
}

@media (max-width: 560px) {
  .card {
    padding: 20px;
  }

  .actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}