:root {
  --bg: #0a1018;
  --bg-glow: #152238;
  --panel: #121c2a;
  --panel-2: #182536;
  --border: #2a3c55;
  --text: #e6eef8;
  --muted: #8b9bb3;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --blue: #3b82f6;
  --blue-dim: #1e3a5f;
  --red: #ef4444;
  --red-dim: #5c1e1e;
  --ok: #22c55e;
  --warn: #eab308;
  --danger: #dc2626;
  --radius: 10px;
  --font: "Segoe UI", "Trebuchet MS", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(900px 480px at 15% -5%, var(--bg-glow), transparent 55%),
    var(--bg);
}

a { color: var(--accent); }

h1, h2, h3 { margin: 0; font-weight: 700; }

.brand {
  letter-spacing: 0.16em;
  font-weight: 800;
}

.brand-lg {
  font-size: clamp(2rem, 5vw, 2.8rem);
  letter-spacing: 0.18em;
}

.muted { color: var(--muted); }

.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  padding: 0.65rem 1.1rem;
  border-radius: 6px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: 0.04em;
}
.btn:hover:not(:disabled) { filter: brightness(1.08); }
.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.btn-primary {
  background: linear-gradient(180deg, var(--accent), var(--accent-hover));
  border-color: var(--accent-hover);
  color: #fff;
}
.btn-ghost {
  background: transparent;
}
.btn-danger {
  background: #7f1d1d;
  border-color: #991b1b;
}
.btn-block { width: 100%; }

.field {
  display: grid;
  gap: 0.4rem;
  margin-bottom: 1rem;
}
.field input, .input {
  width: 100%;
  background: #0a1420;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 0.7rem 0.8rem;
  font: inherit;
}
.field input:focus, .input:focus {
  outline: 2px solid color-mix(in srgb, var(--accent) 50%, transparent);
  border-color: var(--accent);
}

.panel {
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: rgba(8, 14, 22, 0.75);
  flex-wrap: wrap;
}

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background: #243247;
  letter-spacing: 0.04em;
}
.badge-blue { background: var(--blue-dim); color: #93c5fd; }
.badge-red { background: var(--red-dim); color: #fca5a5; }
.badge-ok { background: #14532d; color: #86efac; }
.badge-warn { background: #713f12; color: #fde68a; }

.error-toast {
  position: fixed;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  background: #7f1d1d;
  color: #fff;
  padding: 0.65rem 1rem;
  border-radius: 8px;
  z-index: 50;
  max-width: 90vw;
}
.error-toast[hidden] { display: none; }

.page-center {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

.card {
  width: min(420px, 100%);
  padding: 2rem 1.5rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.card .brand-lg { margin-bottom: 0.35rem; }
.card .subtitle {
  color: var(--muted);
  margin: 0 0 1.5rem;
}

@media (max-width: 720px) {
  .topbar { padding: 0.75rem 1rem; }
  .btn { padding: 0.6rem 0.9rem; }
}