:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --border: #e0e3e8;
  --text: #1c2230;
  --text-dim: #667085;
  --primary: #2f6fed;
  --primary-dark: #1f4fbe;
  --danger: #d1453b;
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.topbar-user {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-dim);
}

.topbar h1 {
  font-size: 18px;
  margin: 0;
}

.tabs { display: flex; gap: 4px; }

.tab-btn {
  border: none;
  background: transparent;
  padding: 8px 14px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 14px;
  color: var(--text-dim);
}

.tab-btn:hover { background: var(--bg); }
.tab-btn.active { background: var(--primary); color: white; }

main { padding: 24px; max-width: 1200px; margin: 0 auto; }

.view { display: none; }
.view.active { display: block; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.card .card-value { font-size: 28px; font-weight: 600; }
.card .card-label { font-size: 13px; color: var(--text-dim); margin-top: 4px; }

.toolbar {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.toolbar input, .toolbar select {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
}

.toolbar input[type="search"] { flex: 1; min-width: 220px; }

.btn {
  border: none;
  border-radius: var(--radius);
  padding: 8px 14px;
  font-size: 14px;
  cursor: pointer;
}

.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }

.btn-secondary { background: var(--bg); color: var(--text); border: 1px solid var(--border); }

.btn-danger { background: transparent; color: var(--danger); }
.btn-danger:hover { text-decoration: underline; }

.table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow-x: auto;
}

table { width: 100%; border-collapse: collapse; font-size: 14px; }

th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

tbody tr:hover { background: var(--bg); cursor: pointer; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 100px;
  font-size: 12px;
  background: #eef2ff;
  color: #3348c9;
}

.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex; align-items: center; justify-content: center;
  z-index: 50;
}

.modal-backdrop.hidden { display: none; }

.modal {
  background: var(--surface);
  border-radius: var(--radius);
  width: 520px;
  max-width: 92vw;
  max-height: 88vh;
  overflow-y: auto;
}

.modal-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 { font-size: 16px; margin: 0; }

.modal-close {
  border: none; background: transparent; font-size: 20px; cursor: pointer; color: var(--text-dim);
}

.modal-body { padding: 20px; }

.form-row { margin-bottom: 12px; display: flex; flex-direction: column; gap: 4px; }
.form-row label { font-size: 12px; color: var(--text-dim); }
.form-row input, .form-row select, .form-row textarea {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
}

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }

.form-actions {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border);
}

.form-actions .right { display: flex; gap: 8px; }

.history-list { list-style: none; padding: 0; margin: 12px 0 0; font-size: 13px; }
.history-list li { padding: 6px 0; border-bottom: 1px solid var(--border); color: var(--text-dim); }

.empty-state { padding: 32px; text-align: center; color: var(--text-dim); }

.error-banner {
  background: #fdecea; color: var(--danger); padding: 10px 14px;
  border-radius: var(--radius); margin-bottom: 12px; font-size: 14px;
}