:root {
  --bg: #f7f8fa;
  --card: #ffffff;
  --border: #e5e7eb;
  --text: #111827;
  --muted: #6b7280;
  --primary: #A73648;
  --primary-600: #8E2E3E;
  --success: #16a34a;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg);
  color: var(--text);
}

.app-header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 12px 16px;
  position: sticky;
  top: 0;
  z-index: 10;
}
.app-header h1 { margin: 0 0 8px; font-size: 18px; }
.tabs { display: flex; gap: 8px; }
.tab {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  cursor: pointer;
}
.tab.active {
  border-color: var(--primary);
  color: var(--primary);
}

#app { max-width: 960px; margin: 16px auto; padding: 0 16px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}

.row { display: flex; gap: 12px; }
.row.col { flex-direction: column; }
.row.center { align-items: center; }
.row.space { justify-content: space-between; }

label { font-weight: 600; margin-bottom: 6px; display: block; }
select, input[type="text"], input[type="number"], button {
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 14px;
}
button.primary { background: var(--primary); color: #fff; border-color: var(--primary); }
button.primary:hover { background: var(--primary-600); }
button.ghost { background: transparent; }
button.danger { background: #ef4444; color: #fff; border-color: #ef4444; }

.muted { color: var(--muted); }
.success { color: var(--success); }
.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.stat { background: #f9fafb; border: 1px dashed var(--border); border-radius: 8px; padding: 10px; }
.stat .value { font-size: 20px; font-weight: 700; }

.list { width: 100%; border-collapse: collapse; }
.list th, .list td { border-bottom: 1px solid var(--border); padding: 8px; text-align: left; }
.list tr:hover { background: #f9fafb; }

.app-footer { text-align: center; padding: 12px; color: var(--muted); }