:root {
  --bg: #f4f5f7;
  --panel: #ffffff;
  --sunken: #f8f9fa;
  --line: #e2e5e9;
  --line-strong: #cdd2d8;
  --text: #1c2228;
  --muted: #69727c;
  --faint: #9aa2ab;
  --accent: #0b7a75;
  --accent-hover: #09655f;
  --accent-ink: #ffffff;
  --accent-soft: #e3f2f1;
  --err: #b42318;
  --err-soft: #fdeceb;
  --warn: #8a5a00;
  --warn-soft: #fff5d9;
  --ok: #18794e;
  --ok-soft: #e5f4ec;
  --tok-k: #7b3fa0;
  --tok-s: #0f6a4c;
  --tok-n: #b4540a;
  --tok-b: #1f55c9;
  --tok-t: #8a3a2c;
  --shadow: 0 1px 2px rgba(16, 24, 32, .06), 0 1px 1px rgba(16, 24, 32, .04);
  --radius: 8px;
  --sans: "Segoe UI", "Malgun Gothic", "Apple SD Gothic Neo", system-ui, sans-serif;
  --mono: "D2Coding", "Cascadia Mono", Consolas, "Malgun Gothic", monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121518;
    --panel: #1a1e22;
    --sunken: #15181b;
    --line: #2a3036;
    --line-strong: #3a4148;
    --text: #e4e8eb;
    --muted: #9ba5ae;
    --faint: #6d767f;
    --accent: #3cb4aa;
    --accent-hover: #52c4ba;
    --accent-ink: #0d1a19;
    --accent-soft: #163330;
    --err: #ff8a7f;
    --err-soft: #3a1d1b;
    --warn: #f2c25b;
    --warn-soft: #352a12;
    --ok: #63d39b;
    --ok-soft: #15301f;
    --tok-k: #d2a8ff;
    --tok-s: #7ee2b8;
    --tok-n: #ffb070;
    --tok-b: #8cb4ff;
    --tok-t: #ff9e8a;
    --shadow: none;
    color-scheme: dark;
  }
}

/* [검은 배경] 을 고른 경우 — 위 시스템 어두운 테마와 같은 값 */
:root[data-theme="dark"] {
  --bg: #121518;
  --panel: #1a1e22;
  --sunken: #15181b;
  --line: #2a3036;
  --line-strong: #3a4148;
  --text: #e4e8eb;
  --muted: #9ba5ae;
  --faint: #6d767f;
  --accent: #3cb4aa;
  --accent-hover: #52c4ba;
  --accent-ink: #0d1a19;
  --accent-soft: #163330;
  --err: #ff8a7f;
  --err-soft: #3a1d1b;
  --warn: #f2c25b;
  --warn-soft: #352a12;
  --ok: #63d39b;
  --ok-soft: #15301f;
  --tok-k: #d2a8ff;
  --tok-s: #7ee2b8;
  --tok-n: #ffb070;
  --tok-b: #8cb4ff;
  --tok-t: #ff9e8a;
  --shadow: none;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 var(--sans);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
button, input, select, textarea { font: inherit; color: inherit; }
[hidden] { display: none !important; }

/* ------------------------------------------------------------ 머리줄 */
.top {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 10px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.brand b { font-size: 15px; font-weight: 650; letter-spacing: -.01em; }
.mark {
  display: inline-grid; place-items: center;
  width: 26px; height: 26px; border-radius: 7px;
  background: var(--accent); color: var(--accent-ink);
  font-size: 12px; font-weight: 700;
}
.tag {
  font-size: 11.5px; color: var(--accent); background: var(--accent-soft);
  padding: 1px 7px; border-radius: 999px; font-weight: 600;
}
.schema-bar { display: flex; align-items: center; gap: 8px; flex: 1; min-width: 0; flex-wrap: wrap; }
.schema-bar select { min-width: 220px; max-width: 360px; }
.ver { color: var(--faint); font-size: 12px; white-space: nowrap; }
.seg.theme button { padding: 4px 10px; }

/* ------------------------------------------------------------ 공통 조작 */
.btn {
  height: 32px; padding: 0 12px;
  border: 1px solid var(--line-strong); border-radius: 6px;
  background: var(--panel); cursor: pointer; white-space: nowrap;
  transition: background .12s, border-color .12s;
}
.btn:hover { background: var(--sunken); border-color: var(--faint); }
.btn:disabled { opacity: .5; cursor: default; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
.btn.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn.sm { height: 26px; padding: 0 9px; font-size: 12.5px; }
.btn:focus-visible, select:focus-visible, input:focus-visible, textarea:focus-visible, .icon-btn:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 1px;
}
select, input[type="text"], input:not([type]), input[list] {
  height: 32px; padding: 0 9px;
  border: 1px solid var(--line-strong); border-radius: 6px;
  background: var(--panel);
}
.icon-btn {
  display: inline-grid; place-items: center;
  width: 26px; height: 26px; border: 0; border-radius: 6px;
  background: transparent; color: var(--muted); cursor: pointer;
}
.icon-btn:hover { background: var(--sunken); color: var(--text); }

.chip {
  display: inline-flex; align-items: center; gap: 6px;
  height: 26px; padding: 0 10px; border-radius: 999px;
  font-size: 12.5px; color: var(--muted); background: var(--sunken);
  border: 1px solid var(--line); white-space: nowrap;
}
.chip::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--faint); }
.chip.ok { color: var(--ok); background: var(--ok-soft); border-color: transparent; }
.chip.ok::before { background: var(--ok); }
.chip.err { color: var(--err); background: var(--err-soft); border-color: transparent; }
.chip.err::before { background: var(--err); }
.chip.dirty { color: var(--warn); background: var(--warn-soft); border-color: transparent; }
.chip.dirty::before { background: var(--warn); }
.chip.busy::before { background: var(--accent); animation: pulse 1s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .25; } }

/* ------------------------------------------------------------ 배치 */
.layout {
  flex: 1; min-height: 0;
  display: grid;
  grid-template-columns: minmax(320px, 40%) 1fr;
  grid-template-rows: minmax(0, 1fr);
  gap: 12px;
  padding: 12px;
}
.schema-pane, .rail { grid-column: 1; grid-row: 1; }
.work-pane { grid-column: 2; grid-row: 1; }
.layout.collapsed { grid-template-columns: 34px 1fr; }
.layout.collapsed .schema-pane { display: none; }
.rail { display: none; }
.layout.collapsed .rail {
  display: flex; align-items: flex-start; justify-content: center;
  padding: 12px 0; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--panel); cursor: pointer; color: var(--muted);
}
.layout.collapsed .rail:hover { color: var(--text); }
.rail span { writing-mode: vertical-rl; letter-spacing: .1em; font-size: 12.5px; }

.pane {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  min-height: 0; min-width: 0;
  display: flex; flex-direction: column;
}
.pane-head {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px 8px 14px; border-bottom: 1px solid var(--line);
}
.pane-head h2 { margin: 0; font-size: 13.5px; font-weight: 650; }
.pane-head .meta { color: var(--muted); font-size: 12.5px; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pane-foot { padding: 7px 14px; border-top: 1px solid var(--line); font-size: 12.5px; color: var(--muted); min-height: 34px; }
.pane-foot:empty { display: none; }
.pane-foot .err { color: var(--err); }
.pane-foot .link { background: none; border: 0; padding: 0; color: var(--accent); cursor: pointer; text-decoration: underline; font-size: inherit; }

.code-input {
  font: 12.5px/1.55 var(--mono);
  border: 0; resize: none; outline: none;
  background: var(--panel); color: var(--text);
  padding: 10px 14px; tab-size: 2;
}
.schema-pane .code-input { flex: 1; min-height: 0; border-radius: 0 0 var(--radius) var(--radius); }

.work-pane { overflow: hidden; }
.tabs { display: flex; gap: 2px; padding: 0 10px; border-bottom: 1px solid var(--line); }
.tabs button {
  border: 0; background: none; cursor: pointer;
  padding: 10px 12px 9px; color: var(--muted); font-weight: 600; font-size: 13.5px;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tabs button:hover { color: var(--text); }
.tabs button.on { color: var(--text); border-bottom-color: var(--accent); }
.tab-body { flex: 1; min-height: 0; overflow: auto; padding: 14px 16px 24px; }

.controls { display: flex; align-items: flex-end; gap: 10px; flex-wrap: wrap; }
.field { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--muted); }
.field.grow { flex: 1; min-width: 220px; }
.field input, .field select { color: var(--text); font-size: 13.5px; }
.hint { color: var(--muted); font-size: 12.5px; margin: 8px 0 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.hint:empty { display: none; }
.hint b { color: var(--text); font-weight: 600; }

.tab-body > .code-input {
  display: block; width: 100%; margin-top: 10px;
  border: 1px solid var(--line-strong); border-radius: 6px; resize: vertical;
  background: var(--sunken);
}
.tab-body > .code-input:focus { border-color: var(--accent); background: var(--panel); }
.code-input.data { height: 112px; word-break: break-all; }
.code-input.value { height: 240px; }
.code-input.drop { border-color: var(--accent); background: var(--accent-soft); }

.actions { display: flex; align-items: center; gap: 14px; margin-top: 10px; flex-wrap: wrap; }
.spacer { flex: 1; }
.check { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; cursor: pointer; white-space: nowrap; }
.check input { accent-color: var(--accent); margin: 0; }
.codec-row { display: flex; align-items: center; gap: 10px; margin-top: 10px; flex-wrap: wrap; }
.codec-row > span { font-size: 12px; color: var(--muted); }
.pills { display: flex; gap: 6px; flex-wrap: wrap; }
.pill { position: relative; cursor: pointer; }
.pill input { position: absolute; opacity: 0; pointer-events: none; }
.pill span {
  display: inline-block; padding: 3px 10px; border-radius: 999px;
  border: 1px solid var(--line-strong); font-size: 12.5px; color: var(--muted);
}
.pill input:checked + span { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); font-weight: 600; }
.pill input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 1px; }

/* ------------------------------------------------------------ 결과 */
.out { margin-top: 16px; }
.out:empty { display: none; }
.summary {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  padding: 9px 12px; border-radius: 6px; background: var(--sunken); border: 1px solid var(--line);
  font-size: 13px; color: var(--muted);
}
.summary .ty { color: var(--text); font-weight: 650; font-family: var(--mono); font-size: 13px; }
.summary .arrow { color: var(--faint); margin: 0 6px; font-family: var(--sans); }
.summary .sep { color: var(--line-strong); }
.msg { margin-top: 8px; padding: 8px 12px; border-radius: 6px; font-size: 13px; }
.msg.err { background: var(--err-soft); color: var(--err); }
.msg.warn { background: var(--warn-soft); color: var(--warn); }
.msg.ok { background: var(--ok-soft); color: var(--ok); }
.msg ul { margin: 0; padding-left: 18px; }
.msg.info { background: var(--sunken); color: var(--muted); border: 1px solid var(--line); }
ul.tried { list-style: none; margin: 6px 0 0; padding: 0; display: grid; gap: 2px; font-size: 12.5px; }
ul.tried li { color: var(--muted); }
ul.tried li b { display: inline-block; min-width: 96px; color: var(--text); font-weight: 600; }
ul.tried li.ok b, ul.tried li.ok { color: var(--ok); }
.msg.err ul.tried li { color: var(--err); opacity: .85; }
.msg .mono { font-family: var(--mono); font-size: 12.5px; }

.viewbar { display: flex; align-items: center; gap: 6px; margin: 12px 0 8px; flex-wrap: wrap; }
.seg { display: inline-flex; border: 1px solid var(--line-strong); border-radius: 6px; overflow: hidden; }
.seg button { border: 0; background: var(--panel); padding: 4px 12px; cursor: pointer; font-size: 12.5px; color: var(--muted); }
.seg button + button { border-left: 1px solid var(--line-strong); }
.seg button.on { background: var(--accent-soft); color: var(--accent); font-weight: 650; }

.pdu + .pdu { margin-top: 12px; }
.pdu-head { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--muted); margin-bottom: 4px; }
.pdu-head b { color: var(--text); font-family: var(--mono); }
pre.code {
  margin: 0; padding: 12px 14px;
  font: 12.5px/1.55 var(--mono);
  background: var(--sunken); border: 1px solid var(--line); border-radius: 6px;
  overflow: auto; max-height: 62vh; white-space: pre; tab-size: 2;
}
.k { color: var(--tok-k); }
.s { color: var(--tok-s); }
.n { color: var(--tok-n); }
.b { color: var(--tok-b); }
.t { color: var(--tok-t); }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 10px; margin-top: 12px; }
.card { border: 1px solid var(--line); border-radius: 8px; background: var(--panel); min-width: 0; display: flex; flex-direction: column; }
.card.wide { grid-column: 1 / -1; }
.card header { display: flex; align-items: center; gap: 8px; padding: 7px 8px 7px 12px; border-bottom: 1px solid var(--line); }
.card header .title { display: flex; flex-direction: column; min-width: 0; flex: 1; line-height: 1.3; }
.card header b { font-size: 13px; }
.card header .size { font-family: var(--mono); font-size: 11.5px; color: var(--muted); white-space: nowrap; }
.card header .acts { display: flex; gap: 4px; flex-shrink: 0; }
.card header .btn.sm { padding: 0 7px; }
.card .body { padding: 10px 12px; font: 12.5px/1.6 var(--mono); word-break: break-all; max-height: 220px; overflow: auto; }
.card pre.code { border: 0; border-radius: 0 0 8px 8px; max-height: 300px; }
.card.err .body { color: var(--err); font-family: var(--sans); word-break: normal; }

/* ------------------------------------------------------------ PCAP */
.muted { color: var(--muted); }
.ok-text { color: var(--ok); }
.warn-text { color: var(--warn); }
.mono { font-family: var(--mono); font-size: 12.5px; }
.msg .prefix { display: block; margin-top: 4px; word-break: break-all; color: var(--faint); }
.filebar {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  margin-top: 10px; padding: 9px 10px 9px 12px; min-height: 48px;
  border: 1px solid var(--line-strong); border-radius: 6px; background: var(--sunken); font-size: 13px;
}
.dropzone {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  margin-top: 8px; min-height: 46px; padding: 8px 12px;
  border: 1.5px dashed var(--line-strong); border-radius: 6px;
  color: var(--muted); font-size: 13px; cursor: pointer; user-select: none;
  transition: background .12s, border-color .12s, color .12s;
}
.dropzone b { color: var(--text); font-weight: 650; }
.dropzone:hover { border-color: var(--faint); color: var(--text); }
.dropzone:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.tab-body.dragging .dropzone, .tab-body.dragging .filebar {
  border-color: var(--accent); border-style: dashed; background: var(--accent-soft); color: var(--accent);
}
.filebar b { font-weight: 650; word-break: break-all; }
.pcap-tag {
  font: 600 11px/1 var(--sans); letter-spacing: .04em; color: var(--accent);
  background: var(--accent-soft); padding: 4px 6px; border-radius: 4px;
}
.busy-dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); margin-right: 6px; animation: pulse 1s ease-in-out infinite; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; margin: 10px 0 8px; }
.chip-btn {
  border: 1px solid var(--line-strong); background: var(--panel); border-radius: 999px;
  padding: 3px 10px; font-size: 12.5px; color: var(--muted); cursor: pointer;
}
.chip-btn b { color: var(--text); font-weight: 600; margin-left: 2px; font-variant-numeric: tabular-nums; }
.chip-btn:hover { border-color: var(--faint); }
.chip-btn.on { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.chip-btn.on b { color: var(--accent); }
.ptable-wrap { max-height: 340px; overflow: auto; border: 1px solid var(--line); border-radius: 6px; }
.ptable { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.ptable th {
  position: sticky; top: 0; z-index: 1; background: var(--sunken); color: var(--muted);
  font-weight: 600; text-align: left; padding: 6px 10px; border-bottom: 1px solid var(--line); white-space: nowrap;
}
.ptable td { padding: 4px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; }
.ptable .num { text-align: right; font-variant-numeric: tabular-nums; }
.ptable tbody tr { cursor: pointer; }
.ptable tbody tr:hover { background: var(--sunken); }
.ptable tbody tr.on { background: var(--accent-soft); }
.ptable tbody tr.on td:first-child { box-shadow: inset 3px 0 0 var(--accent); }
.ptable tbody tr.miss td { color: var(--faint); }
.pager { display: flex; align-items: center; justify-content: flex-end; gap: 10px; margin-top: 8px; font-size: 12.5px; color: var(--muted); }
.pager:empty { display: none; }
#pcap-detail:not(:empty) { margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--line-strong); }

.toast {
  position: fixed; left: 50%; bottom: 22px; transform: translateX(-50%);
  background: var(--text); color: var(--panel); padding: 7px 14px; border-radius: 6px;
  font-size: 13px; box-shadow: 0 4px 14px rgba(0, 0, 0, .18);
}

@media (max-width: 900px) {
  body { overflow: auto; }
  .top { gap: 10px; }
  .schema-bar { flex-basis: 100%; }
  .ver { display: none; }
  .layout, .layout.collapsed { grid-template-columns: 1fr; grid-template-rows: auto; padding: 8px 16px 16px; }
  .schema-pane, .work-pane { grid-column: 1; grid-row: auto; }
  .layout.collapsed .rail { display: none; }
  .schema-pane { height: 46vh; }
  .work-pane { overflow: visible; }
  .tab-body { overflow: visible; }
  .schema-bar select { min-width: 0; flex: 1; }
  #collapse { display: none; }
}