:root {
  --bg: #0f1420;
  --bg-elev: #161d2e;
  --bg-elev-2: #1d263b;
  --border: #2a3450;
  --text: #e8ecf5;
  --text-dim: #9aa5bd;
  --accent: #4f8cff;
  --accent-hover: #6fa1ff;
  --danger: #ff5c6c;
  --danger-hover: #ff7885;
  --success: #35c98f;
  --radius: 10px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f6fb;
    --bg-elev: #ffffff;
    --bg-elev-2: #eef1f8;
    --border: #dde3f0;
    --text: #1a2033;
    --text-dim: #626d87;
    --accent: #3b6fe0;
    --accent-hover: #2f5cc4;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ---------- Login ---------- */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  width: 100%;
  max-width: 360px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.25);
}

.login-card h1 { margin: 0 0 4px; font-size: 1.35rem; }
.login-card .subtitle { margin: 0 0 24px; color: var(--text-dim); font-size: 0.9rem; }

.login-form { display: flex; flex-direction: column; gap: 16px; }
.login-form label { display: flex; flex-direction: column; gap: 6px; font-size: 0.85rem; color: var(--text-dim); }

input, select {
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 10px 12px;
  font-size: 0.95rem;
  width: 100%;
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

button, .btn {
  cursor: pointer;
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease, opacity 0.15s ease;
}

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--bg-elev-2); }
.btn-danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-small { padding: 6px 10px; font-size: 0.8rem; }

.alert {
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  margin-bottom: 16px;
}
.alert-error { background: rgba(255,92,108,0.12); color: var(--danger); border: 1px solid rgba(255,92,108,0.35); }
.alert-success { background: rgba(53,201,143,0.12); color: var(--success); border: 1px solid rgba(53,201,143,0.35); }

/* ---------- Layout ---------- */
.topbar {
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.topbar-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.topbar h1 { font-size: 1.05rem; margin: 0; }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.whoami { color: var(--text-dim); font-size: 0.85rem; }

.container { max-width: 980px; margin: 0 auto; padding: 24px 20px 60px; display: flex; flex-direction: column; gap: 20px; }

.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.card-head { margin-bottom: 14px; }
.card-head h2 { margin: 0 0 4px; font-size: 1.05rem; }
.hint { margin: 0; color: var(--text-dim); font-size: 0.82rem; }

.user-card-head { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.user-title { display: flex; align-items: center; gap: 8px; }
.user-actions { display: flex; gap: 8px; }

.form-row { display: flex; gap: 10px; flex-wrap: wrap; }
.form-row input { flex: 1; min-width: 160px; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  align-items: end;
  margin-top: 14px;
}
.form-grid label { display: flex; flex-direction: column; gap: 6px; font-size: 0.8rem; color: var(--text-dim); }
.checkbox-label { flex-direction: row !important; align-items: center; gap: 8px !important; }
.checkbox-label input { width: auto; }

.router-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.router-table th, .router-table td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.router-table th { color: var(--text-dim); font-weight: 600; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.02em; }
.router-table td.td-actions { display: flex; gap: 6px; white-space: nowrap; }
.empty-row td { color: var(--text-dim); font-style: italic; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 0.72rem; font-weight: 600; }
.badge-on { background: rgba(53,201,143,0.15); color: var(--success); }
.badge-off { background: rgba(154,165,189,0.15); color: var(--text-dim); }

.toast {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 100;
  padding: 12px 18px;
  border-radius: 8px;
  font-size: 0.88rem;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  max-width: 360px;
}
.toast.success { background: var(--success); color: #06281c; }
.toast.error { background: var(--danger); color: #2b0507; }

@media (max-width: 640px) {
  .router-table { display: block; overflow-x: auto; }
}