:root {
  --bg: #070b14;
  --bg-card: rgba(22, 30, 46, 0.85);
  --border: rgba(148, 163, 184, 0.15);
  --text: #f1f5f9;
  --muted: #94a3b8;
  --accent: #6366f1;
  --accent2: #8b5cf6;
  --success: #22c55e;
  --danger: #ef4444;
  --warning: #f59e0b;
  --radius: 16px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

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

body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% -10%, rgba(99, 102, 241, 0.25), transparent),
    radial-gradient(ellipse 60% 40% at 90% 10%, rgba(139, 92, 246, 0.15), transparent),
    radial-gradient(ellipse 50% 30% at 50% 100%, rgba(34, 197, 94, 0.08), transparent);
  pointer-events: none;
  z-index: 0;
}

.wrap {
  position: relative;
  z-index: 1;
  max-width: 920px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
}

.brand h1 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand p {
  font-size: 0.8rem;
  color: var(--muted);
}

.card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

.card h2 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.card-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.muted { color: var(--muted); font-size: 0.9rem; }

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.stat-box {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
}

.stat-box .value {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, #fff, #cbd5e1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-box .label {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-ok { background: rgba(34, 197, 94, 0.2); color: #4ade80; }
.badge-off { background: rgba(148, 163, 184, 0.15); color: var(--muted); }

.row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.row:last-child { border-bottom: none; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  text-decoration: none;
  border: none;
  border-radius: 12px;
  padding: 14px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
}

.btn-secondary {
  background: rgba(71, 85, 105, 0.5);
  box-shadow: none;
  border: 1px solid var(--border);
}

.btn-secondary:hover { background: rgba(71, 85, 105, 0.8); }

.btn-success { background: linear-gradient(135deg, #16a34a, #22c55e); box-shadow: 0 4px 14px rgba(34, 197, 94, 0.3); }
.btn-danger { background: linear-gradient(135deg, #dc2626, #ef4444); box-shadow: 0 4px 14px rgba(239, 68, 68, 0.3); }

.btn-block { width: 100%; margin-top: 8px; }
.btn-sm { padding: 8px 14px; font-size: 0.85rem; }

.btn-group { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }

.alert {
  padding: 14px 18px;
  border-radius: 12px;
  margin-bottom: 20px;
  font-size: 0.9rem;
}

.alert-success {
  background: rgba(34, 197, 94, 0.12);
  border: 1px solid rgba(34, 197, 94, 0.35);
  color: #86efac;
}

.alert-error {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.35);
  color: #fca5a5;
}

.key-box {
  position: relative;
  display: block;
  width: 100%;
  box-sizing: border-box;
  background: rgba(7, 11, 20, 0.8);
  border: 1px dashed rgba(99, 102, 241, 0.4);
  border-radius: 12px;
  padding: 16px;
  margin: 12px 0;
  word-break: break-all;
  font-family: ui-monospace, monospace;
  font-size: 0.78rem;
  line-height: 1.5;
  color: #a5b4fc;
  resize: vertical;
}

.copy-btn {
  margin-top: 10px;
}

.device {
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  margin-bottom: 14px;
}

.device-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.device-head form { margin: 0; }

.platform-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.platform-grid .btn { width: 100%; }

.steps {
  list-style: none;
  counter-reset: step;
  margin: 16px 0;
}

.steps li {
  counter-increment: step;
  position: relative;
  padding-left: 36px;
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 0.9rem;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.steps li strong { color: var(--text); }

.app-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.app-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.85rem;
  transition: border-color 0.15s;
}

.app-links a:hover { border-color: var(--accent); }

input, select {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(7, 11, 20, 0.6);
  color: var(--text);
  font-size: 0.95rem;
  margin-bottom: 14px;
  transition: border-color 0.15s;
}

input:focus, select:focus {
  outline: none;
  border-color: var(--accent);
}

label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 500;
}

.user-card {
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  margin-bottom: 14px;
}

.user-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
  gap: 8px;
}

.user-name { font-weight: 700; font-size: 1.05rem; }
.user-meta { font-size: 0.8rem; color: var(--muted); }

.credit-form {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.payment-card {
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  margin-bottom: 14px;
}

.admin-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.link { color: #a5b4fc; text-decoration: none; }
.link:hover { text-decoration: underline; }

.logout { color: var(--muted); font-size: 0.85rem; text-decoration: none; }
.logout:hover { color: var(--text); }

@media (max-width: 600px) {
  .stats { grid-template-columns: 1fr 1fr; }
  .btn-group { flex-direction: column; }
  .btn-group .btn { width: 100%; }
}