:root {
  --bg: #f7fbff;
  --panel: #ffffff;
  --panel-2: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --primary: #34d399;
  --primary-700: #22c55e;
  --danger: #fb7185;
  --danger-700: #ef4444;
  --border: #e2e8f0;
  --accent: #2563eb;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Emoji, Noto Sans, Ubuntu, Cantarell, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background:
    radial-gradient(1000px 600px at 10% -10%, #e0f2fe, transparent 50%),
    radial-gradient(1000px 600px at 90% -10%, #fce7f3, transparent 50%),
    var(--bg);
  color: var(--text);
}

.hidden { display: none !important; }

.muted { color: var(--muted); }

#app { max-width: 1100px; margin: 0 auto; padding: 20px; }

.app-header {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px 0 20px 0;
}
.brand { display: flex; gap: 12px; align-items: center; }
.logo { font-size: 28px; }
.session { display: flex; gap: 12px; align-items: center; }

.view { display: grid; place-items: center; min-height: 70vh; }
.content { width: 100%; }

.login-card { max-width: 420px; width: 100%; }

.card {
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  box-shadow: 0 10px 25px rgba(2, 8, 23, 0.08);
}

.highlight { outline: 1px solid rgba(96,165,250,0.3); }

h1 { font-size: 26px; margin: 6px 0; }
h2 { font-size: 20px; margin: 6px 0 12px 0; }
h3 { font-size: 18px; margin: 2px 0 10px 0; }

label { display: block; font-size: 14px; margin: 10px 0 6px 0; color: var(--muted); }
input { width: 100%; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--border); background: #f8fafc; color: var(--text); }
input::placeholder { color: #94a3b8; }
form { width: 100%; display: grid; gap: 8px; }

.btn { cursor: pointer; padding: 10px 14px; border-radius: 10px; border: 1px solid var(--border); background: #ffffff; color: var(--text); transition: all .2s ease; }
.btn:hover { transform: translateY(-1px); }
.btn.primary { background: linear-gradient(180deg, var(--primary), var(--primary-700)); border: 0; color: #064e3b; font-weight: 700; }
.btn.danger { background: linear-gradient(180deg, var(--danger), var(--danger-700)); border: 0; color: #7f1d1d; font-weight: 700; }
.btn.small { padding: 6px 10px; font-size: 12px; }

.error { color: #fecaca; min-height: 22px; }

.grid.two { display: grid; grid-template-columns: 1fr; gap: 16px; }
.column { display: grid; gap: 16px; }

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

.panel-header { display: flex; align-items: center; justify-content: space-between; }
.badge { background: #0ea5e9; color: #05243a; border-radius: 999px; font-weight: 700; padding: 6px 10px; font-size: 12px; }

.balance { font-size: 28px; font-weight: 800; letter-spacing: 0.3px; }
.inline-actions { margin-top: 8px; }

.admin-actions { display: grid; gap: 10px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 8px; }

.transactions { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.transactions li { display: flex; justify-content: space-between; gap: 12px; padding: 12px; background: #ffffff; border: 1px solid var(--border); border-radius: 10px; }
.transactions .note { color: var(--muted); font-size: 12px; }
.amount.plus { color: #86efac; }
.amount.minus { color: #fca5a5; }
.time { color: #94a3b8; font-size: 12px; }

.chart-wrap { width: 100%; height: 240px; background: #ffffff; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
svg { width: 100%; height: 100%; }
path.chart-line { stroke: var(--accent); stroke-width: 3; fill: none; }
path.chart-fill { fill: rgba(96,165,250,0.12); }
line.grid { stroke: rgba(148, 163, 184, 0.2); stroke-width: 1; }
text.axis { fill: var(--muted); font-size: 10px; }