:root {
  --paper: #e8eae4;
  --paper-2: #f3f4f0;
  --ink: #17212b;
  --ink-2: #4a5560;
  --rule: #c4c9bd;
  --label: #2d4373;
  --buy: #2f6b4f;
  --cond: #9a6a12;
  --pass: #8a2f2f;
  --warn-bg: #f3e6d0;
  --radius: 6px;
  --font: "IBM Plex Sans KR", system-ui, -apple-system, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 15px/1.6 var(--font);
  padding-bottom: env(safe-area-inset-bottom);
}
main, .top, .foot { max-width: 640px; margin: 0 auto; padding-left: 16px; padding-right: 16px; }

button, input, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--label); outline-offset: 2px; }

/* 상단 */
.top {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: calc(14px + env(safe-area-inset-top)); padding-bottom: 12px;
  border-bottom: 1px solid var(--rule);
}
.top h1 { margin: 0; font-size: 18px; font-weight: 700; letter-spacing: -0.01em; }
.tabs { display: flex; gap: 4px; }
.tabs button {
  border: 0; background: transparent; padding: 6px 12px; border-radius: 999px;
  color: var(--ink-2); font-weight: 500;
}
.tabs button[aria-selected="true"] { background: var(--ink); color: var(--paper-2); }

main { padding-top: 18px; padding-bottom: 8px; }

/* 사진 트레이 */
.tray { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.tray .add, .tray .thumb {
  aspect-ratio: 1; border-radius: var(--radius); overflow: hidden; position: relative;
}
.tray .add {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  border: 1.5px dashed var(--ink-2); color: var(--ink-2); cursor: pointer; background: var(--paper-2);
}
.tray .add .plus { font-size: 26px; line-height: 1; }
.tray .thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.tray .thumb button {
  position: absolute; top: 4px; right: 4px; width: 26px; height: 26px; border-radius: 50%;
  border: 0; background: rgba(23, 33, 43, .78); color: #fff; font-size: 16px; line-height: 1;
}
.tray .add[hidden] { display: none; }

.hint { color: var(--ink-2); font-size: 13px; margin: 8px 0 0; }

/* 입력 */
.step { margin: 24px 0 8px; font-size: 14px; font-weight: 700; color: var(--ink-2); }
.step:first-child { margin-top: 0; }

.seg { display: grid; grid-template-columns: 1fr 1fr; border: 1.5px solid var(--ink); border-radius: var(--radius); overflow: hidden; }
.seg label { position: relative; display: block; }
.seg input { position: absolute; opacity: 0; inset: 0; }
.seg span { display: block; text-align: center; padding: 14px 0; font-weight: 600; background: var(--paper-2); }
.seg label + label span { border-left: 1.5px solid var(--ink); }
.seg input:checked + span { background: var(--ink); color: var(--paper-2); }
.seg input:focus-visible + span { outline: 2px solid var(--label); outline-offset: -4px; }

.field { display: block; margin-top: 18px; }
.field .lbl { display: block; font-weight: 600; margin-bottom: 6px; }
.field small { display: block; color: var(--ink-2); font-size: 13px; margin-top: 6px; }
.field textarea, .code-row input {
  width: 100%; border: 1px solid var(--rule); background: var(--paper-2);
  border-radius: var(--radius); padding: 12px; font-size: 16px;
}
.field textarea { resize: vertical; }
.money { display: flex; align-items: center; border: 1px solid var(--rule); background: var(--paper-2); border-radius: var(--radius); }
.money:focus-within { outline: 2px solid var(--label); outline-offset: 1px; }
.money input {
  flex: 1; min-width: 0; border: 0; background: transparent; padding: 13px 0 13px 14px;
  font-size: 22px; font-weight: 600; font-variant-numeric: tabular-nums;
}
.money input:focus-visible { outline: none; }
.money input::placeholder { font-size: 16px; font-weight: 400; color: #7a838c; }
.money i { font-style: normal; padding: 0 14px; color: var(--ink-2); font-size: 18px; }

.submitbar {
  position: sticky; bottom: 0; z-index: 5; margin: 24px -16px 0;
  padding: 14px 16px calc(14px + env(safe-area-inset-bottom));
  background: linear-gradient(to top, var(--paper) 72%, rgba(232, 234, 228, 0));
}
button.primary {
  width: 100%; padding: 16px; border: 0; border-radius: var(--radius);
  background: var(--label); color: #fff; font-weight: 700; font-size: 17px;
}
button.primary:disabled { background: #aab1c2; color: #eef0f5; cursor: not-allowed; }
button.ghost {
  border: 1px solid var(--ink-2); background: transparent; border-radius: var(--radius);
  padding: 11px 16px; color: var(--ink); min-height: 44px;
}
.empty { color: var(--ink-2); padding: 28px 0; text-align: center; }

/* 진행 */
#progress { margin-top: 22px; padding: 14px; border: 1px solid var(--rule); border-radius: var(--radius); background: var(--paper-2); }
.prog-head { display: flex; justify-content: space-between; gap: 8px; align-items: baseline; }
.prog-head span { color: var(--ink-2); font-size: 13px; font-variant-numeric: tabular-nums; }
#prog-list { list-style: none; margin: 10px 0 12px; padding: 0; max-height: 220px; overflow: auto; }
#prog-list li { padding: 5px 0; border-top: 1px solid var(--rule); font-size: 14px; color: var(--ink-2); word-break: break-word; }
#prog-list li:first-child { border-top: 0; }
#prog-list li b { color: var(--ink); font-weight: 600; }

.error { margin: 16px 0 0; padding: 12px; background: var(--warn-bg); border-left: 3px solid var(--cond); border-radius: 2px; }

/* 결과: 행택 */
#result { margin-top: 24px; }
.tagwrap { position: relative; padding-top: 22px; }
.tagwrap::before {
  content: ""; position: absolute; top: 0; left: 50%; width: 2px; height: 26px; background: var(--ink-2);
  transform: translateX(-50%);
}
.hangtag {
  position: relative; background: var(--paper-2); border: 1.5px solid var(--ink);
  border-radius: 14px 14px 6px 6px; padding: 34px 18px 18px;
}
.hangtag::before {
  content: ""; position: absolute; top: 10px; left: 50%; width: 14px; height: 14px; border-radius: 50%;
  border: 1.5px solid var(--ink); background: var(--paper); transform: translateX(-50%);
}
.hangtag .verdict { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.hangtag .decision { font-size: 26px; font-weight: 700; letter-spacing: -0.02em; }
.hangtag[data-decision="buy"] .decision { color: var(--buy); }
.hangtag[data-decision="conditional"] .decision { color: var(--cond); }
.hangtag[data-decision="pass"] .decision { color: var(--pass); }
.hangtag .conf { font-size: 13px; color: var(--ink-2); }
.hangtag h2 { margin: 6px 0 0; font-size: 17px; font-weight: 600; line-height: 1.4; }
.hangtag .sub { margin: 2px 0 0; color: var(--ink-2); font-size: 14px; }

.prices { display: grid; grid-template-columns: 1fr 1fr; gap: 0; margin-top: 16px; border-top: 1px dashed var(--ink-2); }
.prices > div { padding: 12px 0 0; }
.prices > div:nth-child(1), .prices > div:nth-child(4) { grid-column: 1 / -1; }
.prices > div:nth-child(2) { padding-right: 12px; }
.prices dt { font-size: 13px; color: var(--ink-2); }
.prices dd { margin: 0; font-size: 19px; font-weight: 700; font-variant-numeric: tabular-nums; letter-spacing: -0.01em; }
.prices dd small { font-size: 13px; font-weight: 400; color: var(--ink-2); }
.note { margin: 12px 0 0; font-size: 14px; color: var(--ink-2); }

.actions { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; }

.blk { margin-top: 26px; padding-top: 16px; border-top: 1px solid var(--rule); }
.blk h3 { margin: 0 0 8px; font-size: 16px; font-weight: 700; }
.blk p { margin: 0 0 8px; }
.blk ul { margin: 0 0 8px; padding-left: 18px; }
.blk li { margin: 3px 0; }
.blk h4 { margin: 14px 0 4px; font-size: 14px; font-weight: 600; color: var(--label); }
.kv { display: grid; grid-template-columns: 92px 1fr; gap: 4px 12px; margin: 0; }
.kv dt { color: var(--ink-2); font-size: 14px; }
.kv dd { margin: 0; }

.comps { list-style: none; padding: 0; margin: 0; }
.comps li { padding: 10px 0; border-top: 1px solid var(--rule); margin: 0; }
.comps li:first-child { border-top: 0; }
.comps .cp { font-weight: 700; font-variant-numeric: tabular-nums; }
.comps .cm { color: var(--ink-2); font-size: 13px; }
.comps a { color: var(--label); word-break: break-all; }

.chip {
  display: inline-block; min-width: 20px; padding: 0 5px; margin-left: 3px; border-radius: 3px;
  background: var(--label); color: #fff; font-size: 12px; line-height: 18px; text-align: center; vertical-align: 1px;
  text-decoration: none;
}
.srcs { list-style: none; padding: 0; margin: 0; }
.srcs li { padding: 9px 0; border-top: 1px solid var(--rule); margin: 0; display: grid; grid-template-columns: 26px 1fr; gap: 8px; }
.srcs li:first-child { border-top: 0; }
.srcs .sid { font-weight: 700; color: var(--label); }
.srcs a { color: var(--label); word-break: break-all; }
.srcs .meta { display: block; font-size: 13px; color: var(--ink-2); }
.srcs .bad { color: var(--pass); font-weight: 600; }
.srcs .ok { color: var(--buy); }

.flag { padding: 10px 12px; background: var(--warn-bg); border-left: 3px solid var(--cond); border-radius: 2px; font-size: 14px; margin-bottom: 10px; }
details.raw { margin-top: 20px; }
details.raw pre { white-space: pre-wrap; word-break: break-word; font-size: 13px; background: var(--paper-2); padding: 12px; border-radius: var(--radius); }

/* 기록 */
.history { list-style: none; padding: 0; margin: 0; }
.history li { display: grid; grid-template-columns: 64px 1fr auto; gap: 12px; align-items: center; padding: 10px 0; border-top: 1px solid var(--rule); }
.history li:first-child { border-top: 0; }
.history img { width: 64px; height: 64px; object-fit: cover; border-radius: var(--radius); background: var(--paper-2); }
.history .open { text-align: left; border: 0; background: transparent; padding: 0; }
.history .t { font-weight: 600; display: block; line-height: 1.35; }
.history .m { font-size: 13px; color: var(--ink-2); display: block; }
.history .del { border: 0; background: transparent; color: var(--ink-2); padding: 8px; font-size: 18px; }
#clear-history { margin-top: 16px; }

/* 하단 */
.foot { padding-top: 12px; padding-bottom: 32px; }
.foot details { margin-bottom: 8px; }
.foot summary { cursor: pointer; color: var(--ink-2); font-size: 14px; }
.code-row { display: flex; gap: 8px; margin-top: 8px; }

@media (min-width: 520px) { .tray { grid-template-columns: repeat(4, 1fr); } }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }

/* 결과: 접이식 항목 */
details.fold { margin-top: 0; padding-top: 4px; }
details.fold > summary {
  list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center;
  min-height: 48px; font-size: 16px; font-weight: 700;
}
details.fold > summary::-webkit-details-marker { display: none; }
details.fold > summary::after { content: "+"; font-size: 22px; font-weight: 400; color: var(--ink-2); }
details.fold[open] > summary::after { content: "\2212"; }
details.fold .foldbody { padding: 2px 0 10px; }
.blk.fold { margin-top: 0; }

/* 결과: 판매가 대비 막대 */
.gauge { margin-top: 20px; padding: 14px 14px 12px; border: 1px solid var(--rule); border-radius: var(--radius); background: var(--paper-2); }
.gauge .gt { margin: 0; font-weight: 700; }
.gauge[data-state="high"] .gt { color: var(--pass); }
.gauge[data-state="in"] .gt, .gauge[data-state="low"] .gt { color: var(--buy); }
.gauge .bar { position: relative; height: 10px; border-radius: 5px; background: var(--rule); margin: 46px 6px 8px; }
.gauge .band { position: absolute; top: 0; bottom: 0; border-radius: 5px; background: var(--buy); opacity: .55; }
.gauge .pin { position: absolute; top: -9px; width: 3px; height: 28px; background: var(--ink); transform: translateX(-50%); border-radius: 2px; }
.gauge .pin b { position: absolute; bottom: 31px; left: 50%; transform: translateX(-50%); font-size: 12px; font-weight: 600; white-space: nowrap; background: var(--ink); color: var(--paper-2); padding: 2px 6px; border-radius: 3px; }
.gauge .ends { display: flex; justify-content: space-between; font-size: 13px; color: var(--ink-2); font-variant-numeric: tabular-nums; }