* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font-family: var(--font);
  background: var(--paper);
  color: var(--ink);
  display: flex;
  flex-direction: column;
}
button, input { font: inherit; }
button { cursor: pointer; }

.top {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  padding: 0.65rem 0.85rem;
  background: var(--head);
  color: #efe7db;
}
.top h1 {
  margin: 0 0.75rem 0 0;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.top a { color: #e8c4b0; font-size: 0.85rem; }
.top button {
  background: var(--rust);
  color: #fff;
  border: 0;
  padding: 0.35rem 0.65rem;
  border-radius: 3px;
}
.top button.ghost {
  background: transparent;
  border: 1px solid #6a6156;
  color: #efe7db;
}

.bar {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 0.4rem;
  padding: 0.45rem 0.75rem;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  align-items: center;
}
.bar .addr {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
}
.bar input {
  border: 1px solid var(--line);
  padding: 0.35rem 0.5rem;
  background: #fff;
}

.sheet-wrap {
  flex: 1;
  overflow: auto;
  background: var(--paper);
}
table.sheet {
  border-collapse: collapse;
  min-width: 100%;
  font-size: 0.82rem;
}
.sheet th, .sheet td {
  border: 1px solid var(--line);
  min-width: 5.4rem;
  height: 1.7rem;
  padding: 0 0.35rem;
  background: var(--panel);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sheet th {
  background: #d9d1c3;
  color: var(--muted);
  font-weight: 500;
  position: sticky;
  top: 0;
  z-index: 2;
  text-align: center;
}
.sheet th.rowh, .sheet td.rowh {
  min-width: 2.4rem;
  width: 2.4rem;
  text-align: center;
  background: #d9d1c3;
  position: sticky;
  left: 0;
  z-index: 1;
}
.sheet th.corner { z-index: 3; left: 0; }
.sheet td.sel { outline: 2px solid var(--rust); outline-offset: -2px; background: var(--sel); }
.sheet td.in-range { background: var(--sel); }
.sheet td.err { color: var(--rust); font-family: var(--mono); font-size: 0.75rem; }
.sheet td[data-c="6"] { background: #f4efe4; }
.sheet td.edit { padding: 0; }
.sheet td.edit input {
  width: 100%;
  height: 100%;
  border: 0;
  padding: 0 0.35rem;
  outline: none;
  background: #fff;
}

.fill {
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--rust);
  border: 1px solid #fff;
  cursor: crosshair;
  z-index: 4;
}

.status {
  padding: 0.35rem 0.75rem;
  font-size: 0.78rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: #e4ddd0;
}
input[type="file"] { display: none; }