:root {
  --bg: #0f1117;
  --panel: #171a23;
  --panel-2: #1e222d;
  --border: #2a2f3d;
  --text: #e6e8ee;
  --muted: #8b90a0;
  --accent: #6366f1;
  --accent-2: #4f46e5;
  --green: #22c55e;
  --red: #ef4444;
  --amber: #f59e0b;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}
.hidden { display: none !important; }
.muted { color: var(--muted); }
a { color: var(--accent); cursor: pointer; text-decoration: none; }

/* Login */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px;
  width: 340px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.login-card h1 { margin: 0; font-size: 20px; }
.login-card label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
input, select {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 14px;
  width: 100%;
}
input:focus, select:focus { outline: none; border-color: var(--accent); }
button {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 10px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
}
button:hover { background: var(--accent-2); }
.link-btn { background: none; color: var(--muted); padding: 0; font-weight: 400; }
.link-btn:hover { color: var(--text); background: none; }
.error { color: var(--red); font-size: 13px; min-height: 16px; }

/* App shell */
#app-view { display: flex; min-height: 100vh; }
.sidebar {
  width: 220px;
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 20px 14px;
  position: sticky;
  top: 0;
  height: 100vh;
}
.brand { font-size: 18px; font-weight: 700; margin-bottom: 24px; padding: 0 8px; }
.sidebar nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.sidebar nav a {
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--muted);
  font-weight: 500;
}
.sidebar nav a:hover { background: var(--panel-2); color: var(--text); }
.sidebar nav a.active { background: var(--accent); color: #fff; }
.sidebar-footer { display: flex; flex-direction: column; gap: 6px; padding: 0 8px; }

.content { flex: 1; padding: 28px 32px; overflow-x: auto; }
.page-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; gap: 16px; flex-wrap: wrap; }
.page-head h2 { margin: 0; font-size: 22px; }
.toolbar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.toolbar input, .toolbar select { width: auto; }

/* Stat cards */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; margin-bottom: 24px; }
.stat {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
}
.stat .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.stat .value { font-size: 26px; font-weight: 700; margin-top: 6px; }

/* Tables */
.table-wrap {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; background: var(--panel-2); }
tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--panel-2); }
.empty { padding: 28px; text-align: center; color: var(--muted); }

.badge { padding: 3px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.used { background: rgba(239,68,68,.15); color: var(--red); }
.badge.free { background: rgba(34,197,94,.15); color: var(--green); }

.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-danger { background: var(--red); }
.btn-danger:hover { background: #dc2626; }
.btn-ghost { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--border); }
code.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; background: var(--panel-2); padding: 2px 6px; border-radius: 5px; }

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  padding: 12px 18px;
  border-radius: 10px;
  z-index: 100;
  max-width: 360px;
}
.toast.ok { border-color: var(--green); }
.toast.err { border-color: var(--red); }

/* Modal */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,.6);
  display: flex; align-items: center; justify-content: center; z-index: 200;
}
.modal {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 14px; padding: 24px; width: 400px; max-width: 92vw;
  display: flex; flex-direction: column; gap: 14px;
}
.modal h3 { margin: 0; }
.modal label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 8px; }
.import-help { font-size: 12px; color: var(--muted); }