:root {
  --bg: #0b1020;
  --panel: #121a2f;
  --panel-2: #18233d;
  --line: #24304f;
  --text: #e8eefc;
  --muted: #93a4c7;
  --cyan: #4de1ff;
  --green: #39f59a;
  --red: #ff6b7a;
  --amber: #ffcc66;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --radius: 14px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  background: radial-gradient(circle at top, #15213d 0%, var(--bg) 45%);
  color: var(--text);
  min-height: 100vh;
}

a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

.layout { display: grid; grid-template-columns: 260px 1fr; min-height: 100vh; }
.sidebar {
  background: rgba(8, 12, 24, 0.92);
  border-right: 1px solid var(--line);
  padding: 24px 18px;
}
.brand { font-size: 1.35rem; font-weight: 700; letter-spacing: 0.08em; margin-bottom: 6px; }
.brand span { color: var(--cyan); }
.subtitle { color: var(--muted); font-size: 0.85rem; margin-bottom: 28px; }
.nav { display: grid; gap: 8px; }
.nav a {
  display: block;
  padding: 12px 14px;
  border-radius: 10px;
  color: var(--text);
  background: transparent;
}
.nav a.active, .nav a:hover {
  background: var(--panel-2);
  text-decoration: none;
}
.content { padding: 28px; }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.card, .panel {
  background: rgba(18, 26, 47, 0.92);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card { padding: 18px; }
.card .label { color: var(--muted); font-size: 0.85rem; }
.card .value { font-size: 1.8rem; font-weight: 700; margin-top: 8px; }
.panel { padding: 22px; margin-bottom: 20px; }
.panel h2, .panel h3 { margin-top: 0; }
.muted { color: var(--muted); }
table { width: 100%; border-collapse: collapse; }
th, td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
th { color: var(--muted); font-size: 0.85rem; font-weight: 600; }
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
}
.badge.active { background: rgba(57, 245, 154, 0.15); color: var(--green); }
.badge.locked, .badge.revoked { background: rgba(255, 107, 122, 0.15); color: var(--red); }
.badge.expired { background: rgba(255, 204, 102, 0.15); color: var(--amber); }

form.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}
label { display: grid; gap: 6px; font-size: 0.9rem; color: var(--muted); }
input, select, textarea {
  width: 100%;
  padding: 11px 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #0d1428;
  color: var(--text);
}
textarea { min-height: 90px; resize: vertical; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 8px; }
button, .btn {
  border: 0;
  border-radius: 10px;
  padding: 11px 16px;
  cursor: pointer;
  font-weight: 600;
}
.btn-primary, button[type="submit"] { background: linear-gradient(135deg, #1ea7ff, var(--cyan)); color: #04111d; }
.btn-secondary { background: var(--panel-2); color: var(--text); border: 1px solid var(--line); }
.btn-danger { background: rgba(255, 107, 122, 0.18); color: var(--red); border: 1px solid rgba(255, 107, 122, 0.35); }
.flash {
  padding: 12px 14px;
  border-radius: 10px;
  margin-bottom: 16px;
}
.flash.success { background: rgba(57, 245, 154, 0.12); color: var(--green); }
.flash.error { background: rgba(255, 107, 122, 0.12); color: var(--red); }

.auth-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.auth-card {
  width: min(420px, 100%);
  background: rgba(18, 26, 47, 0.95);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 28px;
  box-shadow: var(--shadow);
}
.inline-form { display: flex; gap: 8px; flex-wrap: wrap; align-items: end; }
.inline-form label { min-width: 120px; }
.code { font-family: Consolas, monospace; color: var(--cyan); }

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { border-right: 0; border-bottom: 1px solid var(--line); }
}