:root {
  --bg: #0f1720; --card: #1b2530; --fg: #e7edf3; --muted: #93a1b0;
  --accent: #3b82f6; --danger: #ef4444; --line: #2b3947;
}
* { box-sizing: border-box; }
body {
  margin: 0; min-height: 100vh; display: flex; align-items: flex-start; justify-content: center;
  background: radial-gradient(1200px 600px at 50% -10%, #16324f 0%, var(--bg) 55%);
  color: var(--fg); font: 16px/1.5 system-ui, -apple-system, Segoe UI, Roboto, sans-serif; padding: 24px;
}
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 28px; width: 100%; max-width: 420px; margin-top: 8vh;
  box-shadow: 0 10px 30px rgba(0,0,0,.35);
}
.card.wide { max-width: 860px; }
h1 { margin: 0 0 12px; font-size: 1.5rem; }
h1 .accent { color: var(--accent); }
h2 { margin: 28px 0 10px; font-size: 1.15rem; border-top: 1px solid var(--line); padding-top: 18px; }
h3 { margin: 20px 0 8px; font-size: 1rem; color: var(--muted); }
.muted { color: var(--muted); font-size: .9rem; }
.error { background: rgba(239,68,68,.12); color: #fca5a5; padding: 10px 12px; border-radius: 8px; }
label { display: block; margin: 14px 0 4px; font-size: .9rem; }
input { width: 100%; padding: 11px 12px; border-radius: 9px; border: 1px solid var(--line); background: #0e161f; color: var(--fg); }
button { margin-top: 16px; padding: 11px 16px; border: 0; border-radius: 9px; background: var(--accent); color: #fff; font-weight: 600; cursor: pointer; }
button.ghost { background: transparent; border: 1px solid var(--line); color: var(--fg); }
button.danger { background: var(--danger); }
a { color: var(--accent); }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.topbar form { margin: 0; } .topbar button { margin: 0; }
.tiles { display: flex; flex-wrap: wrap; gap: 10px; margin: 8px 0 4px; }
.tile { margin: 0; background: #0e161f; border: 1px solid var(--line); color: var(--fg); padding: 14px 18px; border-radius: 10px; font-weight: 600; }
.tile.selected { background: var(--accent); border-color: var(--accent); }
table { width: 100%; border-collapse: collapse; margin-top: 8px; font-size: .92rem; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); vertical-align: middle; }
form.inline { display: inline-flex; gap: 6px; margin: 0; align-items: center; }
form.inline input { width: auto; padding: 7px 9px; } form.inline button { margin: 0; padding: 7px 10px; }
form.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; align-items: center; }
form.grid button { grid-column: 1 / -1; }
.check { display: flex; align-items: center; gap: 8px; margin: 0; } .check input { width: auto; }
button.mini { padding: 3px 9px; font-size: .78rem; margin-left: 6px; background: transparent; border: 1px solid var(--line); color: var(--muted); }
button.mini:hover { color: var(--fg); border-color: var(--accent); }