:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --card: #22263a;
  --border: #2e3347;
  --accent: #4f8ef7;
  --green: #3ecf8e;
  --red: #f87171;
  --yellow: #fbbf24;
  --text: #e8eaf0;
  --muted: #8b92a8;
  --radius: 12px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; min-height: 100vh; }

.topbar { background: var(--surface); border-bottom: 1px solid var(--border); padding: 14px 20px; display: flex; align-items: center; gap: 12px; position: sticky; top: 0; z-index: 100; }
.topbar .logo { font-size: 18px; font-weight: 700; color: var(--text); }
.topbar .subtitle { font-size: 13px; color: var(--muted); }
.topbar .badge { margin-left: auto; font-size: 11px; padding: 3px 8px; border-radius: 20px; font-weight: 600; }
.badge-admin { background: rgba(79,142,247,0.15); color: var(--accent); border: 1px solid rgba(79,142,247,0.3); }
.badge-joe { background: rgba(62,207,142,0.1); color: var(--green); border: 1px solid rgba(62,207,142,0.2); }

.main { max-width: 900px; margin: 0 auto; padding: 20px 16px 80px; }

.balance-banner { background: linear-gradient(135deg, #1a2744 0%, #1e2d4a 100%); border: 1px solid rgba(79,142,247,0.2); border-radius: var(--radius); padding: 20px 24px; margin-bottom: 24px; }
.balance-banner h2 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin-bottom: 12px; }
.balance-row { display: flex; gap: 24px; flex-wrap: wrap; }
.balance-item { flex: 1; min-width: 100px; }
.balance-item .label { font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.balance-item .amount { font-size: 22px; font-weight: 700; }
.amount-positive { color: var(--red); }
.amount-negative { color: var(--green); }
.amount-neutral { color: var(--text); }

.section-header { display: flex; align-items: center; justify-content: space-between; margin: 24px 0 12px; }
.section-title { font-size: 16px; font-weight: 600; }
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 8px; border: none; cursor: pointer; font-size: 13px; font-weight: 600; transition: opacity 0.15s; }
.btn:hover { opacity: 0.85; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); }
.btn-danger { background: rgba(248,113,113,0.1); color: var(--red); border: 1px solid rgba(248,113,113,0.2); }
.btn-success { background: rgba(62,207,142,0.1); color: var(--green); border: 1px solid rgba(62,207,142,0.2); }

.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 12px; overflow: hidden; }
.card-header { padding: 14px 16px; display: flex; align-items: center; justify-content: space-between; cursor: pointer; }
.card-title { font-weight: 600; font-size: 15px; }
.card-meta { font-size: 12px; color: var(--muted); margin-top: 2px; }
.card-body { padding: 0 16px 16px; border-top: 1px solid var(--border); }

.stats-row { display: flex; gap: 12px; padding: 12px 0; flex-wrap: wrap; }
.stat { flex: 1; min-width: 80px; text-align: center; background: rgba(255,255,255,0.03); border-radius: 8px; padding: 10px 8px; }
.stat .val { font-size: 18px; font-weight: 700; }
.stat .key { font-size: 11px; color: var(--muted); margin-top: 2px; }

.chip { display: inline-flex; align-items: center; font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: 20px; }
.chip-pending { background: rgba(251,191,36,0.1); color: var(--yellow); }
.chip-approved { background: rgba(62,207,142,0.1); color: var(--green); }
.chip-split { background: rgba(79,142,247,0.1); color: var(--accent); }
.chip-unassigned { background: rgba(255,255,255,0.05); color: var(--muted); }
.chip-active { background: rgba(62,207,142,0.1); color: var(--green); }
.chip-complete { background: rgba(79,142,247,0.1); color: var(--accent); }
.chip-archived { background: rgba(255,255,255,0.05); color: var(--muted); }

.list-item { display: flex; align-items: center; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid var(--border); font-size: 13px; }
.list-item:last-child { border-bottom: none; }
.list-item .desc { color: var(--muted); font-size: 12px; margin-top: 2px; }

/* Upload zone */
.upload-zone { border: 2px dashed var(--border); border-radius: var(--radius); padding: 32px 20px; text-align: center; cursor: pointer; transition: border-color 0.15s; margin-bottom: 16px; }
.upload-zone:hover, .upload-zone.drag { border-color: var(--accent); background: rgba(79,142,247,0.05); }
.upload-zone svg { color: var(--muted); margin-bottom: 8px; }
.upload-zone p { color: var(--muted); font-size: 14px; }
.upload-zone strong { color: var(--text); }

/* Form */
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }
.form-control { width: 100%; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; color: var(--text); font-size: 14px; outline: none; }
.form-control:focus { border-color: var(--accent); }
select.form-control { cursor: pointer; }
.form-row { display: flex; gap: 12px; }
.form-row .form-group { flex: 1; }

/* Modal */
.modal-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,0.7); z-index: 200; display: flex; align-items: center; justify-content: center; padding: 20px; }
.modal { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); width: 100%; max-width: 500px; max-height: 90vh; overflow-y: auto; }
.modal-header { padding: 18px 20px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.modal-title { font-weight: 700; font-size: 16px; }
.modal-body { padding: 20px; }
.modal-footer { padding: 16px 20px; border-top: 1px solid var(--border); display: flex; gap: 10px; justify-content: flex-end; }

/* Toast */
.toast-container { position: fixed; bottom: 20px; right: 20px; z-index: 300; display: flex; flex-direction: column; gap: 8px; }
.toast { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; font-size: 13px; max-width: 320px; animation: slideIn 0.2s ease; display: flex; align-items: center; gap: 8px; }
.toast-success { border-left: 3px solid var(--green); }
.toast-error { border-left: 3px solid var(--red); }
@keyframes slideIn { from { transform: translateX(20px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

.empty { text-align: center; color: var(--muted); padding: 32px; font-size: 14px; }

.preview-img { max-width: 100%; border-radius: 8px; margin-top: 12px; border: 1px solid var(--border); }

@media (max-width: 600px) {
  .balance-row { gap: 12px; }
  .form-row { flex-direction: column; }
}