:root {
  --bg: #0f1115;
  --bg-elevated: #171a21;
  --bg-card: #1b1f28;
  --border: #2a2f3a;
  --text: #e8eaed;
  --text-muted: #9aa0ac;
  --accent: #5b8cff;
  --accent-soft: rgba(91, 140, 255, 0.15);
  --green: #4cc38a;
  --red: #ef5a5a;
  --amber: #e0a84c;
  --radius: 10px;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

a { color: var(--accent); }

header.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
  position: sticky;
  top: 0;
  z-index: 10;
}

header.topbar h1 {
  font-size: 18px;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

header.topbar h1 .logo-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}

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

nav.tabs button {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 8px 16px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
}

nav.tabs button:hover {
  background: var(--bg-card);
  color: var(--text);
}

nav.tabs button.active {
  background: var(--accent-soft);
  color: var(--accent);
}

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

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

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
}

.card h2, .card h3 {
  margin-top: 0;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 18px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

@media (max-width: 900px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat .label {
  color: var(--text-muted);
  font-size: 13px;
}

.stat .value {
  font-size: 24px;
  font-weight: 600;
}

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

th, td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

tr:hover td { background: rgba(255,255,255,0.02); }
tr.clickable { cursor: pointer; }

.amount-neg { color: var(--red); }
.amount-pos { color: var(--green); }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.badge.high { background: rgba(76, 195, 138, 0.15); color: var(--green); }
.badge.mid { background: rgba(224, 168, 76, 0.15); color: var(--amber); }
.badge.low { background: rgba(239, 90, 90, 0.15); color: var(--red); }

button.btn {
  background: var(--accent);
  color: white;
  border: none;
  padding: 8px 14px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
}

button.btn:hover { opacity: 0.9; }

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

button.btn.danger {
  background: rgba(239, 90, 90, 0.15);
  color: var(--red);
}

input, select, textarea {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 7px 10px;
  border-radius: 8px;
  font-size: 13px;
  font-family: inherit;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
  align-items: center;
}

.filter-bar label {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.receipt-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 14px;
  background: var(--bg-elevated);
}

.receipt-card .receipt-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 8px;
}

.receipt-card .merchant {
  font-size: 16px;
  font-weight: 600;
}

.receipt-card .meta {
  color: var(--text-muted);
  font-size: 13px;
}

.line-items-mini {
  font-size: 13px;
  color: var(--text-muted);
  margin: 8px 0;
}

.line-items-mini div { padding: 2px 0; display: flex; justify-content: space-between; }

.actions-row {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

.edit-form {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--border);
  display: none;
  gap: 8px;
  flex-wrap: wrap;
}

.edit-form.open { display: flex; }
.edit-form label { display: flex; flex-direction: column; font-size: 12px; color: var(--text-muted); gap: 3px; }

.empty-state {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
}

.tag-pill {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  margin-right: 6px;
}

#apikey-modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

#apikey-modal .card { width: 360px; }

.toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: 12px 18px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  z-index: 200;
  font-size: 14px;
}

.toast.error { border-color: var(--red); color: var(--red); }
.toast.success { border-color: var(--green); color: var(--green); }

canvas { max-height: 320px; }

.detail-panel {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  width: 420px;
  background: var(--bg-elevated);
  border-left: 1px solid var(--border);
  padding: 20px;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.2s ease;
  z-index: 50;
}

.detail-panel.open { transform: translateX(0); }

.detail-panel .close-btn {
  float: right;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 18px;
}