:root {
  --bg: #0c1216;
  --panel: #152026;
  --panel-2: #1c2a31;
  --line: #2b3a42;
  --text: #e8eef2;
  --muted: #8fa3ad;
  --accent: #3dbe8c;
  --accent-2: #2a9d6f;
  --warn: #e0a34a;
  --danger: #e35d5d;
  --radius: 14px;
  --sidebar-w: 260px;
  --font: "Segoe UI", "Candara", "Gill Sans", system-ui, sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(61, 190, 140, 0.12), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(70, 120, 160, 0.14), transparent 50%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: #7ad9b2; }

.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  width: var(--sidebar-w);
  background: linear-gradient(180deg, #121a1f 0%, #0e1519 100%);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: 20;
}
.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 22px 18px 18px;
}
.brand-mark {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: grid; place-items: center;
  font-weight: 800;
  letter-spacing: 0.04em;
  background: linear-gradient(145deg, var(--accent), #1f7a58);
  color: #06140e;
}
.brand-title { font-weight: 700; letter-spacing: 0.08em; }
.brand-sub { color: var(--muted); font-size: 0.78rem; }

.sidebar .nav-link {
  color: var(--muted);
  border-radius: 10px;
  padding: 0.65rem 0.9rem;
}
.sidebar .nav-link:hover { background: var(--panel-2); color: var(--text); }
.sidebar .nav-link.active {
  background: rgba(61, 190, 140, 0.16);
  color: var(--accent);
  font-weight: 600;
}
.sidebar-foot {
  margin-top: auto;
  padding: 16px;
  border-top: 1px solid var(--line);
}
.badge-role {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  font-size: 0.75rem;
  color: var(--text);
}

.main { flex: 1; min-width: 0; }
.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 22px;
  border-bottom: 1px solid var(--line);
  background: rgba(12, 18, 22, 0.7);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.content { padding: 22px; }

.card-soft {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  box-shadow: 0 10px 30px rgba(0,0,0,0.18);
}
.stat {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.stat .n { font-size: 1.8rem; font-weight: 700; line-height: 1; }
.stat .l { color: var(--muted); font-size: 0.9rem; }

.table { --bs-table-bg: transparent; --bs-table-color: var(--text); --bs-table-border-color: var(--line); }
.table > :not(caption) > * > * { background: transparent; }
.form-control, .form-select, .form-control:focus, .form-select:focus {
  background: #10171b;
  color: var(--text);
  border-color: var(--line);
  box-shadow: none;
}
.form-label { color: var(--muted); }
.btn-accent {
  background: var(--accent);
  border: none;
  color: #072014;
  font-weight: 650;
}
.btn-accent:hover { background: var(--accent-2); color: #fff; }
.code-input {
  font-size: 2.2rem;
  letter-spacing: 0.4em;
  text-align: center;
  font-weight: 700;
}
.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.login-card {
  width: min(420px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 2rem 1.6rem;
  box-shadow: 0 20px 50px rgba(0,0,0,0.35);
}
.login-card h1 {
  font-size: 1.55rem;
  letter-spacing: 0.06em;
  margin-bottom: 0.2rem;
}
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.badge-active { background: rgba(61,190,140,.18); color: var(--accent); }
.badge-expired { background: rgba(227,93,93,.18); color: var(--danger); }
.badge-warn { background: rgba(224,163,74,.18); color: var(--warn); }
textarea.json-editor {
  min-height: 420px;
  width: 100%;
  display: block;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.85rem;
  line-height: 1.45;
  resize: vertical;
}

.action-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
  max-width: 280px;
}
.action-form {
  display: inline-flex;
  margin: 0;
}
.edit-meta-form {
  margin: 0.35rem 0;
  padding: 0.75rem;
  background: var(--panel-2);
  border-radius: 10px;
  border: 1px solid var(--line);
}

.pending-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  justify-content: flex-end;
}

.device-actions {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  min-width: 168px;
}
.btn-device {
  width: 100%;
  min-height: 2.55rem;
  padding: 0.55rem 0.9rem;
  border-radius: 12px;
  font-weight: 650;
  font-size: 0.92rem;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  transition: background .15s ease, border-color .15s ease, color .15s ease;
}
.btn-device-ok {
  background: rgba(61, 190, 140, 0.2);
  border-color: rgba(61, 190, 140, 0.45);
  color: var(--accent);
}
.btn-device-ok:hover { background: var(--accent); color: #072014; }
.btn-device-warn {
  background: rgba(224, 163, 74, 0.16);
  border-color: rgba(224, 163, 74, 0.45);
  color: var(--warn);
}
.btn-device-warn:hover { background: var(--warn); color: #1a1206; }
.btn-device-danger {
  background: rgba(227, 93, 93, 0.14);
  border-color: rgba(227, 93, 93, 0.4);
  color: var(--danger);
}
.btn-device-danger:hover { background: var(--danger); color: #fff; }
.btn-device-neutral {
  background: rgba(143, 163, 173, 0.12);
  border-color: var(--line);
  color: var(--text);
}
.btn-device-neutral:hover { background: var(--panel-2); color: #fff; }
.btn-device-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--muted);
}
.btn-device-ghost:hover { color: var(--text); border-color: var(--muted); }

.config-list {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.config-row {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.config-row-title { font-weight: 650; margin-bottom: 0.15rem; }
.config-row-meta { color: var(--muted); font-size: 0.82rem; }
.config-row-actions {
  display: flex;
  gap: 0.4rem;
  flex-shrink: 0;
}
.config-row-actions .btn-device { width: auto; min-width: 88px; }
.config-editor {
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}
details.card-soft summary {
  font-weight: 650;
  color: var(--muted);
}

.license-activate-form {
  padding: 0.65rem 0.75rem;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.license-activate-form .form-label {
  font-size: 0.78rem;
  margin-bottom: 0.25rem;
}

.users-create .form-control-lg,
.users-create .form-select-lg,
.users-edit-form .form-control-lg,
.users-edit-form .form-select-lg {
  min-height: 3rem;
  font-size: 1.05rem;
  border-radius: 12px;
}
.select-role {
  background-image: linear-gradient(45deg, transparent 50%, var(--accent) 50%),
    linear-gradient(135deg, var(--accent) 50%, transparent 50%);
  background-position: calc(100% - 18px) calc(50% - 3px), calc(100% - 12px) calc(50% - 3px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  padding-right: 2.2rem;
}
.btn-user-primary {
  min-height: 3rem;
  border-radius: 12px;
  font-size: 1.05rem;
}
.users-edit-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr 1.1fr 0.9fr;
  gap: 0.65rem;
  align-items: end;
}
.users-edit-actions { padding-top: 1.4rem; }
@media (max-width: 991.98px) {
  .users-edit-grid { grid-template-columns: 1fr 1fr; }
  .users-edit-actions { padding-top: 0; grid-column: 1 / -1; }
}

/* Bootstrap CDN blocked by host CSP — local assets/bootstrap*. Keep form spacing sane. */
.content form { margin-bottom: 0; }
.content .table td form { vertical-align: middle; }
.btn { white-space: nowrap; }

@media (max-width: 991.98px) {
  .sidebar {
    position: fixed;
    left: 0; top: 0;
    transform: translateX(-105%);
    transition: transform .2s ease;
  }
  .sidebar.open { transform: translateX(0); }
  .action-stack { max-width: none; }
  .config-row { flex-direction: column; align-items: stretch; }
  .config-row-actions { justify-content: stretch; }
  .config-row-actions .btn-device { flex: 1; }
}