:root {
  --bg: #f6f7f9; --surface: #fff; --text: #1b1f24; --muted: #5d6673;
  --border: #dde1e6; --accent: #e8590c; --accent-text: #fff;
  --warn-bg: #fff4e5; --warn-text: #8a4b00; --viewer: #eef1f4;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418; --surface: #1a1f25; --text: #e7eaee; --muted: #9aa4b1;
    --border: #2d343c; --accent: #ff7a2f; --accent-text: #111;
    --warn-bg: #3a2a12; --warn-text: #ffc98a; --viewer: #151a20;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}
header { max-width: 1100px; margin: 0 auto; padding: 28px 16px 8px; }
h1 { margin: 0; font-size: 26px; }
.sub { margin: 4px 0 0; color: var(--muted); }

main {
  max-width: 1100px; margin: 0 auto; padding: 16px;
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 20px;
}
@media (max-width: 800px) { main { grid-template-columns: 1fr; } }

.drop {
  display: flex; align-items: center; justify-content: center; position: relative;
  aspect-ratio: 4 / 3; border: 2px dashed var(--border); border-radius: 12px;
  background: var(--viewer); cursor: pointer; overflow: hidden; text-align: center;
}
.drop.over { border-color: var(--accent); }
.drop.loaded { border-style: solid; cursor: grab; }
.drop-msg { display: flex; flex-direction: column; gap: 4px; color: var(--muted); padding: 16px; }
.drop-msg strong { color: var(--text); font-size: 17px; }
#view { position: absolute; inset: 0; width: 100%; height: 100%; }

.file-info { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 10px; color: var(--muted); }
#file-name { color: var(--text); font-weight: 600; word-break: break-all; }
.link { background: none; border: 0; padding: 0; color: var(--accent); cursor: pointer; font: inherit; }
.warn { margin-top: 10px; padding: 10px 12px; border-radius: 8px; background: var(--warn-bg); color: var(--warn-text); }

.options-col { display: flex; flex-direction: column; gap: 16px; }
form { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
fieldset { border: 0; margin: 0 0 14px; padding: 0; }
fieldset:last-child { margin-bottom: 0; }
legend { font-weight: 600; margin-bottom: 6px; font-size: 13px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.hint { margin: 6px 0 0; color: var(--muted); font-size: 13px; }
select, input[type=number] {
  width: 100%; padding: 8px 10px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--bg); color: var(--text); font: inherit;
}
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip input { position: absolute; opacity: 0; pointer-events: none; }
.chip span {
  display: inline-block; padding: 6px 12px; border: 1px solid var(--border);
  border-radius: 999px; cursor: pointer; user-select: none;
}
.chip input:checked + span { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.chip input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }

.quote { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 18px; }
.placeholder { margin: 0; color: var(--muted); }
.price { font-size: 34px; font-weight: 700; margin: 0; }
.price small { font-size: 15px; font-weight: 400; color: var(--muted); }
.lead { font-size: 17px; margin: 6px 0 14px; }
.breakdown { width: 100%; border-collapse: collapse; font-size: 14px; }
.breakdown td { padding: 4px 0; border-top: 1px solid var(--border); }
.breakdown td:last-child { text-align: right; }
.fine { margin: 12px 0 0; font-size: 12.5px; color: var(--muted); }
.loading { color: var(--muted); }
.error { color: #d6336c; margin: 0; }