:root {
  --bg: #f3f0e7;
  --card: #fcf9f1;
  --ink: #171818;
  --line: #d6cfbf;
  --accent: #1f5f53;
  --tab: #e6decf;
  --tabActive: #fff9ec;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  background: linear-gradient(140deg, #f7f3ea, var(--bg));
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 1rem;
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--line);
  background: #fdf9ef;
}
.topbar h1 { margin: 0 0 0.2rem; }
.topbar p { margin: 0; opacity: 0.8; }
.actions { display: flex; align-items: end; gap: 0.7rem; }

.sheet-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0.6rem 1.1rem;
  border-bottom: 1px solid var(--line);
  background: #efe7d7;
  position: sticky;
  top: 0;
  z-index: 3;
}
.sheet-tab {
  border: 1px solid #cdbfa6;
  background: var(--tab);
  padding: 0.45rem 0.7rem;
  border-radius: 7px;
  cursor: pointer;
}
.sheet-tab.active { background: var(--tabActive); border-color: #9d8b66; font-weight: 600; }

.sheet-views { padding: 1rem; }
.sheet {
  display: none;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1rem;
  margin-bottom: 1rem;
}
.sheet.active { display: block; }
.sheet h2 { margin-top: 0; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 0.7rem; }
.toolbar, .cost-toolbar { display: flex; flex-wrap: wrap; gap: 0.7rem; align-items: end; margin-bottom: 0.8rem; }
.kassen-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 0.8rem; }
.mini-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.5rem; }

label { display: flex; flex-direction: column; gap: 0.2rem; font-size: 0.94rem; }
input, select, textarea, button { font: inherit; }
input, select, textarea {
  border: 1px solid #c9bfa9;
  border-radius: 7px;
  background: #fff;
  padding: 0.4rem 0.55rem;
}
button {
  border: 1px solid #1a4b41;
  border-radius: 7px;
  background: var(--accent);
  color: #fff;
  padding: 0.45rem 0.7rem;
  cursor: pointer;
}
button.secondary { background: #f4efe2; color: #2b2b2b; border-color: #beae8d; }

.file-label input { margin-top: 0.25rem; }

.table-wrap { overflow: auto; border: 1px solid #d5ccb8; border-radius: 8px; background: #fff; }
.sheet-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.sheet-table th, .sheet-table td {
  border: 1px solid #ddd2bc;
  padding: 0.2rem;
}
.sheet-table th {
  background: #f2e9d7;
  position: sticky;
  top: 0;
  z-index: 1;
}
.sheet-table td input {
  width: 100%;
  border: none;
  padding: 0.2rem;
  background: transparent;
}
.sheet-table td.idx {
  background: #f7f2e5;
  text-align: right;
  width: 3.2rem;
  color: #5f5a50;
}

.foot { padding: 0 1rem 1rem; }
.result {
  background: #191a1c;
  color: #f2f4f1;
  border-radius: 8px;
  padding: 0.8rem;
  max-height: 320px;
  overflow: auto;
}