:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #22263a;
  --border: #2d3148;
  --accent: #6366f1;
  --accent-hover: #4f52d4;
  --text: #e2e4ef;
  --text-muted: #7c809a;
  --green: #22c55e;
  --amber: #f59e0b;
  --red: #ef4444;
  --radius: 10px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 14px;
}

a { color: var(--accent); text-decoration: none; }

/* Layout */
.container { max-width: 1200px; margin: 0 auto; padding: 24px 16px; }

header {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  margin-bottom: 28px;
}
header h1 { font-size: 20px; font-weight: 700; letter-spacing: -0.3px; }
header span { color: var(--text-muted); font-weight: 400; font-size: 13px; margin-left: 8px; }

/* Dashboard cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.card-label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.8px; color: var(--text-muted); margin-bottom: 8px; }
.card-value { font-size: 26px; font-weight: 700; }
.card-value.green { color: var(--green); }
.card-value.amber { color: var(--amber); }
.card-value.red { color: var(--red); }

/* Chart */
.chart-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 28px;
}
.chart-box h2 { font-size: 14px; font-weight: 600; margin-bottom: 16px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.6px; }
.chart-box canvas { max-height: 220px; }

/* Form */
.form-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 28px;
}
.form-box h2 { font-size: 14px; font-weight: 600; margin-bottom: 16px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.6px; }
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  align-items: end;
}
label { display: flex; flex-direction: column; gap: 5px; font-size: 12px; color: var(--text-muted); }
input, select, textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 8px 10px;
  font-size: 13px;
  font-family: inherit;
  transition: border-color 0.15s;
  width: 100%;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
}
select option { background: var(--surface2); }

/* Buttons */
button {
  cursor: pointer;
  border: none;
  border-radius: 6px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  transition: background 0.15s, opacity 0.15s;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  padding: 9px 18px;
  width: 100%;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-icon {
  background: transparent;
  color: var(--text-muted);
  padding: 4px 7px;
  font-size: 15px;
  border-radius: 5px;
}
.btn-icon:hover { background: var(--surface2); color: var(--text); }
.btn-icon.delete:hover { color: var(--red); }

/* Filters */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
  align-items: center;
}
.filters select, .filters input { max-width: 160px; }
.filters .reset { color: var(--text-muted); font-size: 12px; padding: 8px 10px; background: var(--surface2); border-radius: 6px; border: 1px solid var(--border); }
.filters .reset:hover { color: var(--text); cursor: pointer; }

/* Table */
.table-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.table-box h2 { font-size: 14px; font-weight: 600; padding: 16px 20px 0; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.6px; }

table { width: 100%; border-collapse: collapse; }
thead tr { border-bottom: 1px solid var(--border); }
th {
  text-align: left;
  padding: 12px 14px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: var(--text-muted);
  font-weight: 600;
}
tbody tr { border-bottom: 1px solid var(--border); transition: background 0.1s; }
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: var(--surface2); }
td { padding: 11px 14px; vertical-align: middle; }
td input, td select {
  background: var(--surface2);
  border: 1px solid var(--accent);
  padding: 5px 8px;
  border-radius: 5px;
  font-size: 13px;
  min-width: 80px;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3px;
}
.badge-paid { background: rgba(34,197,94,0.15); color: var(--green); }
.badge-pending { background: rgba(245,158,11,0.15); color: var(--amber); }
.badge-fee { background: rgba(99,102,241,0.15); color: var(--accent); }
.badge-negative { background: rgba(239,68,68,0.12); color: var(--red); }

/* Edit row save/cancel */
.edit-actions { display: flex; gap: 5px; }
.btn-save { background: var(--accent); color: #fff; padding: 4px 10px; }
.btn-save:hover { background: var(--accent-hover); }
.btn-cancel { background: var(--surface2); color: var(--text-muted); padding: 4px 10px; }
.btn-cancel:hover { color: var(--text); }

/* Empty state */
.empty { text-align: center; color: var(--text-muted); padding: 40px; font-size: 13px; }

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  color: var(--text-muted);
  font-size: 13px;
  border-top: 1px solid var(--border);
}
.pagination:empty { display: none; }
.pagination button {
  background: var(--surface2);
  color: var(--text);
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
}
.pagination button:hover:not(:disabled) { background: var(--surface); }
.pagination button:disabled { opacity: 0.4; cursor: not-allowed; }

/* Responsive */
@media (max-width: 700px) {
  th:nth-child(3), td:nth-child(3),
  th:nth-child(6), td:nth-child(6) { display: none; }
}