:root {
  --bg: #1a1a2e;
  --card: #16213e;
  --accent: #0f3460;
  --text: #e8e8e8;
  --muted: #a0a0a0;
  --success: #00c853;
  --danger: #ff5252;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; }
#app { padding: 1rem; max-width: 480px; margin: 0 auto; }
.hidden { display: none !important; }
#loading { text-align: center; padding: 2rem; }
#auth-required { text-align: center; padding: 2rem; }
#auth-required .small { font-size: 0.9rem; color: var(--muted); }
code { background: var(--card); padding: 0.2rem 0.4rem; border-radius: 4px; }

.header { background: var(--card); border-radius: 12px; padding: 1rem; margin-bottom: 1rem; }
.header .balance { font-size: 1.25rem; font-weight: 700; }
.header .sub-status { font-size: 0.9rem; color: var(--muted); margin-top: 0.25rem; }
.header .sub-status.active { color: var(--success); }

.nav { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem; }
.nav button { background: var(--accent); color: var(--text); border: none; padding: 0.5rem 0.75rem; border-radius: 8px; cursor: pointer; font-size: 0.9rem; }
.nav button:hover { filter: brightness(1.1); }
.nav button.active { background: #1a5276; }

.main { background: var(--card); border-radius: 12px; padding: 1rem; min-height: 200px; }
.main h2 { margin: 0 0 1rem; font-size: 1.1rem; }
.main .card { background: var(--bg); border-radius: 8px; padding: 0.75rem; margin-bottom: 0.5rem; }
.main .row { display: flex; justify-content: space-between; margin: 0.5rem 0; }
.main input { width: 100%; padding: 0.6rem; border-radius: 8px; border: 1px solid var(--accent); background: var(--bg); color: var(--text); margin: 0.5rem 0; }
.main button.primary { background: var(--success); color: #fff; border: none; padding: 0.6rem 1rem; border-radius: 8px; cursor: pointer; font-size: 1rem; width: 100%; margin-top: 0.5rem; }
.main button.primary:disabled { opacity: 0.6; cursor: not-allowed; }
.main .error { color: var(--danger); font-size: 0.9rem; margin-top: 0.5rem; }
.main .success { color: var(--success); margin-top: 0.5rem; }
.main a { color: #64b5f6; }
.main .link-btn { display: inline-block; margin-top: 0.5rem; padding: 0.5rem 1rem; background: var(--accent); color: var(--text); text-decoration: none; border-radius: 8px; }
.main .muted { color: var(--muted); font-size: 0.85rem; }
.main ul { padding-left: 1.2rem; }
.main table { width: 100%; font-size: 0.9rem; }
.main th, .main td { text-align: left; padding: 0.4rem 0; border-bottom: 1px solid var(--accent); }
.main .amounts { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.main .amounts button { padding: 0.6rem 1rem; background: var(--accent); color: var(--text); border: none; border-radius: 8px; cursor: pointer; }
.main .amounts button:hover { filter: brightness(1.1); }
.main .admin-form input { margin: 0.25rem 0; }
.main .admin-form label { display: block; margin-top: 0.75rem; font-size: 0.9rem; color: var(--muted); }