:root {
  --bg: #0f172a;
  --card: #111827;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --primary: #22c55e;
  --danger: #ef4444;
  --border: #1f2937;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif; }

.header, .footer {
  display: flex; justify-content: space-between; align-items: center;
  padding: 1rem; background: #0b1220; border-bottom: 1px solid var(--border);
}
.header nav a { color: var(--muted); text-decoration: none; margin-left: 1rem; }
.header nav a:hover { color: var(--text); }

.container { max-width: 900px; margin: 2rem auto; padding: 0 1rem; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 1rem; }

.form-group { margin-bottom: 1rem; }
label { display: block; margin-bottom: 0.5rem; color: var(--muted); }
input[type="text"], input[type="email"], input[type="password"], textarea, select {
  width: 100%; padding: 0.6rem; border-radius: 6px; border: 1px solid var(--border); background: #0b1220; color: var(--text);
}
textarea { resize: vertical; }

.btn { background: var(--primary); color: #062b10; border: none; padding: 0.6rem 1rem; border-radius: 6px; cursor: pointer; font-weight: 600; }
.btn:hover { filter: brightness(1.1); }
.btn-small { padding: 0.35rem 0.6rem; font-size: 0.9rem; }
.btn-danger { background: var(--danger); color: #fff; }

.alert { padding: 0.8rem; border-radius: 6px; margin-bottom: 1rem; }
.alert-error { background: #2b1a1a; border: 1px solid #7f1d1d; color: #fecaca; }
.alert-success { background: #13231a; border: 1px solid #065f46; color: #d1fae5; }

.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { border-bottom: 1px solid var(--border); padding: 0.6rem; text-align: left; }
.table th { color: var(--muted); }
.inline-form { display: inline-flex; gap: 0.5rem; align-items: center; }
.footer { border-top: 1px solid var(--border); }