:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1c1f26;
  --muted: #6b7280;
  --border: #e3e5e9;
  --accent: #2563eb;
  --accent-soft: #dbe6fe;
  --good: #16a34a;
  --bad: #dc2626;
  font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
}

h1 { margin: 0 0 0.75rem; font-size: 1.3rem; }

nav#tabs { display: flex; gap: 0.5rem; flex-wrap: wrap; }
nav#tabs button {
  background: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.4rem 1rem;
  cursor: pointer;
  color: var(--muted);
  font-size: 0.9rem;
}
nav#tabs button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

main { max-width: 1000px; margin: 0 auto; padding: 1.5rem; }

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

.hint { color: var(--muted); font-size: 0.9rem; max-width: 700px; }

.summary { display: flex; gap: 1rem; margin: 1rem 0; flex-wrap: wrap; }
.summary .stat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  min-width: 140px;
}
.summary .stat .n { font-size: 1.4rem; font-weight: 600; }
.summary .stat .l { font-size: 0.8rem; color: var(--muted); }

.chart { display: flex; flex-direction: column; gap: 0.6rem; margin: 1rem 0; }
.chart-row { display: grid; grid-template-columns: 140px 1fr 90px; align-items: center; gap: 0.6rem; }
.chart-row .label { font-size: 0.9rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chart-row .bar-track { background: var(--border); border-radius: 6px; height: 20px; position: relative; overflow: hidden; }
.chart-row .bar-fill { height: 100%; border-radius: 6px; background: var(--accent); }
.chart-row .bar-fill.below { background: var(--good); }
.chart-row .bar-fill.above { background: var(--bad); }
.chart-row .value { font-size: 0.85rem; color: var(--muted); text-align: right; }

.data-table { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; margin-top: 0.5rem; }
.data-table th, .data-table td { padding: 0.5rem 0.7rem; border-bottom: 1px solid var(--border); font-size: 0.9rem; text-align: left; }
.data-table th { background: #fafbfc; color: var(--muted); font-weight: 600; }
.data-table tr:last-child td { border-bottom: none; }
.data-table button.del { background: none; border: none; color: var(--bad); cursor: pointer; font-size: 0.85rem; }

.form-card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 1rem 1.2rem; margin-bottom: 1rem; }
.form-card h2 { margin-top: 0; font-size: 1.05rem; }
.form-card label { display: block; margin-bottom: 0.7rem; font-size: 0.9rem; color: var(--muted); }
.form-card input, .form-card select { display: block; width: 100%; margin-top: 0.25rem; padding: 0.45rem 0.5rem; border: 1px solid var(--border); border-radius: 6px; font-size: 0.95rem; color: var(--text); }
.form-card button { background: var(--accent); color: white; border: none; border-radius: 6px; padding: 0.5rem 1.1rem; cursor: pointer; font-size: 0.9rem; }
.msg { font-size: 0.85rem; min-height: 1.2em; }
.msg.error { color: var(--bad); }
.msg.ok { color: var(--good); }

.row { margin-bottom: 1rem; }
.row label { font-size: 0.9rem; color: var(--muted); }
.row select { margin-left: 0.5rem; padding: 0.35rem 0.5rem; border-radius: 6px; border: 1px solid var(--border); }

.manage-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1rem; }
.inline-form { display: flex; gap: 0.5rem; margin-bottom: 0.75rem; flex-wrap: wrap; }
.inline-form input, .inline-form select { flex: 1; min-width: 100px; padding: 0.4rem 0.5rem; border: 1px solid var(--border); border-radius: 6px; }
.inline-form button { background: var(--accent); color: white; border: none; border-radius: 6px; padding: 0.4rem 0.9rem; cursor: pointer; }

.entity-list { list-style: none; margin: 0; padding: 0; max-height: 260px; overflow-y: auto; }
.entity-list li { display: flex; justify-content: space-between; align-items: center; padding: 0.35rem 0; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
.entity-list li:last-child { border-bottom: none; }
.entity-list button.del { background: none; border: none; color: var(--bad); cursor: pointer; }

#receipt-file { display: inline-block; }
.camera-start-row { display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; margin-top: 0.5rem; }
.camera-start-row button, #receipt-scan-btn { background: var(--accent); color: white; border: none; border-radius: 6px; padding: 0.5rem 1.1rem; cursor: pointer; }
.camera-start-row button:disabled, #receipt-scan-btn:disabled { opacity: 0.6; cursor: default; }

#camera-container { margin-bottom: 0.75rem; }
#camera-video {
  width: 100%;
  max-width: 480px;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  background: #000;
  border-radius: 10px;
  display: block;
}
.camera-controls { display: flex; gap: 0.6rem; margin-top: 0.6rem; }
.camera-controls button {
  border: none; border-radius: 8px; padding: 0.6rem 1.3rem; cursor: pointer; font-size: 0.95rem;
}
#camera-shot-btn { background: var(--accent); color: white; }
.camera-controls button.secondary, #camera-cancel-btn { background: var(--border); color: var(--text); }

.scan-review-grid { display: grid; grid-template-columns: minmax(220px, 340px) 1fr; gap: 1.25rem; align-items: start; }
@media (max-width: 800px) { .scan-review-grid { grid-template-columns: 1fr; } }

.receipt-preview { width: 100%; max-width: 340px; border: 1px solid var(--border); border-radius: 8px; display: block; }
#scan-raw-text { white-space: pre-wrap; font-size: 0.78rem; background: #fafbfc; border: 1px solid var(--border); border-radius: 6px; padding: 0.5rem; max-height: 240px; overflow-y: auto; }

#scan-items-table input[type=text] { width: 100%; border: 1px solid var(--border); border-radius: 6px; padding: 0.3rem 0.4rem; font-size: 0.85rem; }
#scan-items-table input[type=number] { width: 90px; border: 1px solid var(--border); border-radius: 6px; padding: 0.3rem 0.4rem; font-size: 0.85rem; }
#scan-items-table .raw-line { color: var(--muted); font-size: 0.75rem; max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#scan-add-row { background: none; border: 1px dashed var(--border); border-radius: 6px; padding: 0.35rem 0.8rem; cursor: pointer; color: var(--muted); margin: 0.5rem 0 1rem; }