:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --border: #2d3a4f;
  --text: #e8eef7;
  --muted: #8b9cb3;
  --accent: #3d8bfd;
  --accent-hover: #5a9fff;
  --danger: #f87171;
  --ok: #4ade80;
  --radius: 8px;
  font-family: "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }

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

.screen { min-height: 100vh; }
.hidden { display: none !important; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.login-card {
  max-width: 380px;
  margin: 12vh auto;
}

h1, h2 { margin: 0 0 0.75rem; font-weight: 600; }
h1 { font-size: 1.5rem; }
h2 { font-size: 1.1rem; }

.muted { color: var(--muted); font-size: 0.9rem; margin: 0 0 1rem; }

label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 1rem;
}

input, select, button {
  font: inherit;
  border-radius: 6px;
  border: 1px solid var(--border);
}

input, select {
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.5rem 0.65rem;
  background: var(--bg);
  color: var(--text);
}

button {
  cursor: pointer;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

button:hover { background: var(--accent-hover); }

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border-color: var(--border);
}

.topbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.brand { font-weight: 700; margin-right: auto; }

.tabs { display: flex; gap: 0.25rem; }

.tab {
  background: transparent;
  color: var(--muted);
  border: none;
}

.tab.active {
  color: var(--text);
  background: var(--bg);
}

.content { padding: 1.25rem; max-width: 1200px; margin: 0 auto; }

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 1rem;
}

@media (max-width: 900px) {
  .grid-2 { grid-template-columns: 1fr; }
}

.list {
  list-style: none;
  padding: 0;
  margin: 0;
  max-height: 420px;
  overflow: auto;
}

.list li {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
}

.list li:hover { background: rgba(61, 139, 253, 0.08); }
.list li.selected { background: rgba(61, 139, 253, 0.18); border-left: 3px solid var(--accent); }

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.table th, .table td {
  text-align: left;
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--border);
}

.table th { color: var(--muted); font-weight: 500; }

.form-inline { display: flex; gap: 0.5rem; margin-bottom: 1rem; }
.form-inline input { flex: 1; margin-top: 0; }
.form-stack { margin-bottom: 1rem; }

.checkbox { display: flex; align-items: center; gap: 0.5rem; }
.checkbox input { width: auto; margin: 0; }

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.toolbar h2 { margin-right: auto; margin-bottom: 0; }
.inline { display: flex; align-items: center; gap: 0.5rem; margin: 0; }
.inline input { width: 140px; margin-top: 0; }

.row-actions { margin-bottom: 0.75rem; }

.btn-danger { background: #7f1d1d; border-color: #7f1d1d; }
.btn-danger:hover { background: #991b1b; }
.btn-sm { padding: 0.3rem 0.6rem; font-size: 0.8rem; }

.usage-filters { display: flex; align-items: end; gap: 0.75rem; margin: 0 0 1rem; flex-wrap: wrap; }
.usage-filters label { margin: 0; min-width: 220px; }

.notice {
  background: rgba(74, 222, 128, 0.12);
  border: 1px solid var(--ok);
  padding: 0.75rem;
  border-radius: 6px;
  margin-bottom: 1rem;
  word-break: break-all;
  font-family: ui-monospace, monospace;
  font-size: 0.85rem;
}

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

.toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  z-index: 100;
}

.toast.error { border-color: var(--danger); color: var(--danger); }