:root {
  --bg: #0d1117;
  --bg-card: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --text-dim: #8b949e;
  --accent: #3fb950;
  --accent-red: #f85149;
  --accent-blue: #58a6ff;
  --accent-purple: #bc8cff;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 28px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}
.nav .brand { font-weight: 700; font-size: 1.05rem; letter-spacing: 0.02em; }
.nav a { color: var(--text-dim); text-decoration: none; margin-left: 20px; font-size: 0.9rem; }
.nav a:hover, .nav a.active { color: var(--accent-blue); }
.container { max-width: 1200px; margin: 0 auto; padding: 28px; }
.stat-cards { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; }
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 22px;
  min-width: 200px;
  flex: 1;
}
.stat-card .label { font-size: 0.8rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.05em; }
.stat-card .value { font-size: 1.8rem; font-weight: 700; margin-top: 6px; }
.stat-card .delta.up { color: var(--accent-red); }
.stat-card .delta.down { color: var(--accent); }
.panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 24px;
}
.panel h2 { margin-top: 0; font-size: 1.05rem; color: var(--text); }
table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--text-dim); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; }
tr:hover { background: rgba(255,255,255,0.02); }
.amount-neg { color: var(--accent-red); }
.amount-pos { color: var(--accent); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media (max-width: 900px) { .grid-2 { grid-template-columns: 1fr; } }
form.inline { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
input, select {
  background: #0d1117;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 0.88rem;
}
button, .btn {
  background: var(--accent-blue);
  color: #0d1117;
  border: none;
  padding: 9px 16px;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  font-size: 0.88rem;
  text-decoration: none;
  display: inline-block;
}
button:hover, .btn:hover { opacity: 0.88; }
.btn-secondary { background: transparent; border: 1px solid var(--border); color: var(--text); }
.login-wrap {
  display: flex; align-items: center; justify-content: center; height: 100vh;
}
.login-box {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px;
  padding: 40px; width: 360px;
}
.login-box h1 { font-size: 1.3rem; margin-bottom: 4px; }
.login-box p.sub { color: var(--text-dim); font-size: 0.85rem; margin-top: 0; margin-bottom: 24px; }
.login-box label { display: block; font-size: 0.8rem; color: var(--text-dim); margin-bottom: 6px; margin-top: 14px; }
.login-box input { width: 100%; }
.login-box button { width: 100%; margin-top: 20px; }
.error-msg { color: var(--accent-red); font-size: 0.85rem; margin-top: 10px; }
.success-msg { color: var(--accent); font-size: 0.85rem; margin-top: 10px; margin-bottom: 14px; background: rgba(63,185,80,0.1); border: 1px solid var(--accent); padding: 10px 14px; border-radius: 8px; }
.warn-box { background: #3d2b00; border: 1px solid #6b4d00; color: #ffcc66; padding: 10px 14px; border-radius: 8px; font-size: 0.85rem; margin-bottom: 14px; }
.card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 20px;
}
.card h3 { font-size: 1rem; }
.card form label { display: block; font-size: 0.8rem; color: var(--text-dim); margin-bottom: 6px; margin-top: 14px; }
.card form input { width: 100%; }
.card form button { width: 100%; margin-top: 18px; }
.filter-form { display: flex; gap: 14px; flex-wrap: wrap; align-items: flex-end; }
.filter-form > div { display: flex; flex-direction: column; gap: 6px; }
.filter-form label { font-size: 0.78rem; color: var(--text-dim); }
.filter-form input, .filter-form select { min-width: 140px; }