/* VRINGON — dark CAD theme */
:root {
  --bg: #0b0e13;
  --bg-panel: #12161d;
  --bg-panel2: #171c25;
  --bg-inset: #0e1218;
  --line: #232a36;
  --line-soft: #1b212b;
  --text: #dbe2ee;
  --text-dim: #8b96a8;
  --text-faint: #5d6675;
  --accent: #4da3ff;
  --accent-soft: rgba(77, 163, 255, .12);
  --ok: #4ade80;
  --warn: #fbbf24;
  --err: #f87171;
  --radius: 10px;
  --mono: "SF Mono", "JetBrains Mono", Consolas, monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  background: var(--bg); color: var(--text);
  font: 13.5px/1.55 -apple-system, "Segoe UI", "Pretendard", "Noto Sans KR", sans-serif;
  display: flex; flex-direction: column; overflow: hidden;
}
.hidden { display: none !important; }
.flex1 { flex: 1; }
.mini { font-size: 11px; color: var(--text-faint); font-weight: 500; }

/* ---------------- top bar ---------------- */
#topbar {
  height: 52px; flex: none; display: flex; align-items: center; gap: 24px;
  padding: 0 18px; background: var(--bg-panel); border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: baseline; gap: 9px; }
.brand-mark { color: var(--accent); font-size: 19px; align-self: center; }
.brand-name { font-weight: 800; letter-spacing: .14em; font-size: 15px; }
.brand-sub { color: var(--text-faint); font-size: 11.5px; }
.steps { display: flex; align-items: center; gap: 10px; margin: 0 auto; }
.step {
  display: flex; align-items: center; gap: 8px; padding: 6px 14px;
  border-radius: 999px; color: var(--text-faint); border: 1px solid transparent;
  font-weight: 600; font-size: 12.5px;
}
.step[data-active="true"] {
  color: var(--text); background: var(--accent-soft);
  border-color: rgba(77,163,255,.35);
}
.step-no {
  width: 18px; height: 18px; border-radius: 50%; background: var(--line);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700;
}
.step[data-active="true"] .step-no { background: var(--accent); color: #04121f; }
.step-arrow { color: var(--text-faint); }

/* ---------------- layout ---------------- */
#layout { flex: 1; display: flex; min-height: 0; }
#left-panel {
  width: 372px; flex: none; background: var(--bg-panel);
  border-right: 1px solid var(--line); padding: 18px 16px 14px;
  display: flex; flex-direction: column; min-height: 0;
}
#create-panel { overflow-y: auto; flex: 1; min-height: 0; }
#edit-left { flex: 1; display: flex; flex-direction: column; min-height: 0; }
#ltab-chat { flex: 1; display: flex; flex-direction: column; min-height: 0; }
#ltab-info { flex: 1; overflow-y: auto; min-height: 0; padding-bottom: 10px; }
#right-panel {
  width: 384px; flex: none; background: var(--bg-panel);
  border-left: 1px solid var(--line); overflow-y: auto; padding: 16px 16px 28px;
}
#viewport-wrap { flex: 1; position: relative; min-width: 0; background: var(--bg); }
#viewport { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }

.panel-title { font-size: 14px; font-weight: 700; margin-bottom: 12px; letter-spacing: .02em; }
.panel-sub { font-size: 12.5px; font-weight: 700; margin: 20px 0 8px; color: var(--text-dim);
  text-transform: uppercase; letter-spacing: .06em; }
.hint { color: var(--text-dim); font-size: 12.3px; margin-bottom: 12px; }
.hint b { color: var(--text); }

/* ---------------- tabs ---------------- */
.tabs { display: flex; gap: 4px; background: var(--bg-inset); padding: 4px;
  border-radius: var(--radius); margin-bottom: 14px; border: 1px solid var(--line-soft); }
.tab {
  flex: 1; padding: 7px 4px; border: 0; background: transparent; color: var(--text-dim);
  border-radius: 7px; cursor: pointer; font-weight: 600; font-size: 12px;
  font-family: inherit;
}
.tab:hover { color: var(--text); }
.tab.active { background: var(--bg-panel2); color: var(--text);
  box-shadow: 0 1px 4px rgba(0,0,0,.4); }

/* ---------------- sample cards ---------------- */
.sample-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.sample-card {
  background: var(--bg-panel2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 10px; cursor: pointer; transition: border-color .15s, transform .15s;
}
.sample-card:hover { border-color: var(--accent); transform: translateY(-1px); }
.sample-card .thumb {
  width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: 6px;
  background: #0a0d12; display: block; margin-bottom: 8px;
}
.sample-card .thumb.placeholder { display: flex; align-items: center; justify-content: center;
  color: var(--text-faint); font-size: 26px; }
.sample-card .name { font-weight: 700; font-size: 12.5px; }
.sample-card .sub { color: var(--text-faint); font-size: 11px; font-family: var(--mono); }

/* ---------------- dropzone ---------------- */
.dropzone {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  border: 1.5px dashed var(--line); border-radius: var(--radius);
  padding: 30px 12px; cursor: pointer; text-align: center;
  transition: border-color .15s, background .15s;
}
.dropzone:hover, .dropzone.drag { border-color: var(--accent); background: var(--accent-soft); }
.dz-icon { font-size: 26px; color: var(--accent); }
.dz-main { font-weight: 600; }
.dz-sub { color: var(--text-faint); font-size: 11.5px; }
.or-row { display: flex; align-items: center; gap: 10px; color: var(--text-faint);
  font-size: 11.5px; margin: 14px 0 8px; }
.or-row::before, .or-row::after { content: ""; flex: 1; height: 1px; background: var(--line-soft); }
.chip-row { display: flex; flex-wrap: wrap; gap: 7px; }
.chip {
  padding: 5px 12px; border-radius: 999px; background: var(--bg-panel2);
  border: 1px solid var(--line); color: var(--text-dim); cursor: pointer;
  font-size: 12px; font-weight: 600; font-family: inherit;
}
.chip:hover { border-color: var(--accent); color: var(--text); }

/* ---------------- numeric form ---------------- */
.numeric-form { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 10px; margin-bottom: 14px; }
.numeric-form .nf-item label { display: block; font-size: 11px; color: var(--text-dim);
  margin-bottom: 3px; }
.numeric-form input {
  width: 100%; background: var(--bg-inset); color: var(--text);
  border: 1px solid var(--line); border-radius: 6px; padding: 6px 8px;
  font-family: var(--mono); font-size: 12.5px;
}
.numeric-form input:focus { outline: none; border-color: var(--accent); }

/* ---------------- buttons ---------------- */
.primary-btn {
  width: 100%; padding: 10px; border: 0; border-radius: 8px; cursor: pointer;
  background: var(--accent); color: #04121f; font-weight: 800; font-size: 13px;
  font-family: inherit; transition: filter .15s;
}
.primary-btn:hover { filter: brightness(1.12); }
.primary-btn:disabled { filter: grayscale(.6) brightness(.7); cursor: default; }
.ghost-btn {
  padding: 7px 12px; border-radius: 8px; cursor: pointer; font-family: inherit;
  background: transparent; border: 1px solid var(--line); color: var(--text-dim);
  font-weight: 600; font-size: 12px; text-decoration: none; display: inline-flex;
  align-items: center; justify-content: center; gap: 6px;
}
.ghost-btn:hover { border-color: var(--accent); color: var(--text); }
.ghost-btn.small { padding: 4px 10px; font-size: 11.5px; }
.export-row { display: flex; gap: 8px; flex-wrap: wrap; }
.export-row > * { flex: 1; }

/* ---------------- meta / measure ---------------- */
.meta-box {
  background: var(--bg-inset); border: 1px solid var(--line-soft); border-radius: var(--radius);
  padding: 10px 12px; font-size: 12px; color: var(--text-dim);
}
.meta-box .row { display: flex; justify-content: space-between; padding: 2.5px 0; gap: 10px; }
.meta-box .row b { color: var(--text); font-weight: 600; text-align: right; }
.warn-chip { color: var(--warn); font-size: 11.5px; margin-top: 6px; }

/* ---------------- 도면 해석 결과 (native drawing view) ---------------- */
#drawing-view { margin-top: 12px; border-top: 1px solid var(--line-soft); padding-top: 9px; }
.dw-title { font-size: 12px; font-weight: 700; color: var(--text); margin-bottom: 7px; }
.dw-title .mini { display: block; margin-top: 2px; font-weight: 500; }
.dw-panel {
  background: var(--bg-panel2); border: 1px solid var(--line-soft);
  border-radius: 8px; padding: 6px 8px 4px; margin-bottom: 7px;
}
.dw-cap { font-size: 10.5px; color: var(--text-faint); font-weight: 700; margin-bottom: 2px; }
.dw-panel svg, .dw-cell svg { width: 100%; display: block; }
.dw-main { fill: rgba(77,163,255,.05); stroke: var(--accent); stroke-width: 1.3;
  vector-effect: non-scaling-stroke; }
.dw-sub { fill: none; stroke: #7d8899; stroke-width: 1.1; stroke-dasharray: 4 3;
  vector-effect: non-scaling-stroke; }
.dw-station { stroke: #fbbf24aa; stroke-width: 1; stroke-dasharray: 3 3;
  vector-effect: non-scaling-stroke; }
.dw-label { fill: var(--warn); font-size: 9px; font-family: var(--mono); }
.dw-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.dw-cell {
  background: var(--bg-panel2); border: 1px solid var(--line-soft);
  border-radius: 8px; padding: 5px 6px 3px;
}
.dw-label2 { text-align: center; font-size: 9.5px; color: var(--text-faint);
  font-family: var(--mono); margin-top: 1px; }
.dw-raw { display: inline-block; margin-top: 4px; color: var(--text-faint);
  text-decoration: none; }
.dw-raw:hover { color: var(--accent); }

#measure-table { margin-top: 10px; }
#measure-table table { width: 100%; border-collapse: collapse; font-family: var(--mono);
  font-size: 11.3px; }
#measure-table th { text-align: right; color: var(--text-faint); font-weight: 600;
  padding: 3px 4px; border-bottom: 1px solid var(--line-soft); font-size: 10.5px; }
#measure-table th:first-child, #measure-table td:first-child { text-align: left; }
#measure-table td { text-align: right; padding: 2.5px 4px; color: var(--text-dim); }
#measure-table td:first-child { color: var(--text); font-family: inherit; font-size: 11.5px; }
#measure-table .ok { color: var(--ok); }
#measure-table .mid { color: var(--warn); }
#measure-table .bad { color: var(--err); }

/* ---------------- parameter sliders ---------------- */
.param-head { display: flex; align-items: center; justify-content: space-between; }
.head-actions { display: flex; gap: 5px; }
.head-actions button:disabled { opacity: .35; cursor: default; }
/* ---------------- chat thread ---------------- */
#chat-thread {
  flex: 1; overflow-y: auto; min-height: 0; padding: 4px 2px 10px;
  display: flex; flex-direction: column; gap: 8px;
}
.msg { max-width: 92%; }
.msg-user { align-self: flex-end; }
.msg-user .bubble {
  background: var(--accent-soft); border: 1px solid rgba(77,163,255,.35);
  color: var(--text); border-radius: 12px 12px 3px 12px; padding: 7px 11px;
  font-size: 12.3px;
}
.msg-bot { align-self: flex-start; }
.msg-bot .bubble {
  background: var(--bg-panel2); border: 1px solid var(--line);
  border-radius: 12px 12px 12px 3px; padding: 7px 11px; font-size: 12px;
  color: var(--text-dim);
}
.msg-bot .bubble .cmd-ok { color: var(--ok); }
.msg-bot .bubble .cmd-err { color: var(--warn); }
.msg-sys { align-self: center; text-align: center; }
.msg-sys .bubble {
  font-size: 11px; color: var(--text-faint); padding: 2px 8px;
}
.msg-sys .bubble b { color: var(--text-dim); }
.msg-meta {
  display: flex; align-items: center; gap: 8px; margin-top: 3px; font-size: 10.5px;
  color: var(--text-faint);
}
.msg-user .msg-meta { justify-content: flex-end; }
.restore-btn {
  border: 1px solid var(--line); background: transparent; color: var(--text-faint);
  border-radius: 999px; padding: 1px 8px; font-size: 10px; cursor: pointer;
  font-family: inherit;
}
.restore-btn:hover { color: var(--accent); border-color: var(--accent); }
.pchip {
  display: inline-block; background: var(--bg-inset); border: 1px solid var(--line-soft);
  border-radius: 5px; padding: 1px 6px; margin: 1px 2px 1px 0;
  font-size: 10.5px; font-family: var(--mono); color: var(--text);
}
.pchip .up { color: var(--ok); } .pchip .down { color: var(--warn); }
.typing { color: var(--text-faint); font-style: italic; }

#chat-input-area {
  flex: none; padding: 9px 10px 8px; margin-top: 4px;
  background: linear-gradient(160deg, rgba(77,163,255,.07), rgba(167,139,250,.05));
  border: 1px solid rgba(77,163,255,.22); border-radius: 12px;
}
.cmd-foot { display: flex; align-items: center; gap: 8px; margin-top: 7px; }
.cmd-help-toggle {
  border: 1px solid var(--line); background: transparent; color: var(--text-faint);
  border-radius: 999px; padding: 2px 9px; font-size: 10.5px; font-weight: 700;
  cursor: pointer; font-family: inherit;
}
.cmd-help-toggle:hover, .cmd-help-toggle.on { color: var(--accent);
  border-color: var(--accent); }
#cmd-box { display: flex; gap: 6px; }
#cmd-box input {
  flex: 1; background: var(--bg-inset); color: var(--text);
  border: 1px solid var(--line); border-radius: 9px; padding: 9px 11px;
  font-size: 12.5px; font-family: inherit;
}
#cmd-box input:focus { outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(77,163,255,.15); }
#cmd-box button {
  width: 38px; border: 0; border-radius: 9px; cursor: pointer;
  background: var(--accent); color: #04121f; font-size: 15px; font-weight: 800;
}
#cmd-box button:hover { filter: brightness(1.12); }
#cmd-examples {
  display: flex; flex-wrap: wrap; gap: 5px; align-items: center; margin-top: 8px;
}
.cmd-ex-label { font-size: 10px; color: var(--text-faint); font-weight: 700;
  margin-right: 2px; }
.cmd-ex {
  border: 1px solid var(--line); background: rgba(14,18,24,.6); color: var(--text-dim);
  border-radius: 999px; padding: 3px 10px; font-size: 11px; cursor: pointer;
  font-family: inherit;
}
.cmd-ex:hover { color: var(--text); border-color: var(--accent);
  background: var(--accent-soft); }
#cmd-help {
  margin-top: 9px; padding: 9px 10px; border-radius: 9px;
  background: var(--bg-inset); border: 1px solid var(--line-soft);
}
.help-row { font-size: 11.5px; color: var(--text); margin-bottom: 8px; }
.help-row:last-child { margin-bottom: 0; }
.help-ex { margin: 3px 0; display: flex; flex-wrap: wrap; gap: 4px; }
.help-ex code {
  background: var(--bg-panel2); border: 1px solid var(--line-soft);
  border-radius: 5px; padding: 1px 6px; font-size: 10.5px; color: var(--accent);
  font-family: var(--mono);
}
.help-sub { color: var(--text-dim); font-size: 11px; margin-top: 2px; }
#cmd-feedback {
  font-size: 11.5px; margin-top: 8px; color: var(--text-dim);
}
#cmd-feedback .cmd-ok { color: var(--ok); }
#cmd-feedback .cmd-err { color: var(--warn); }
.pgroup { margin-bottom: 6px; }
.pgroup-title {
  font-size: 11px; font-weight: 800; color: var(--text-faint); letter-spacing: .1em;
  text-transform: uppercase; margin: 18px 0 6px; display: flex; align-items: center; gap: 8px;
}
.pgroup-title::after { content: ""; flex: 1; height: 1px; background: var(--line-soft); }
.prow {
  padding: 8px 10px 10px; border-radius: 9px; margin-bottom: 4px;
  border: 1px solid transparent; transition: background .12s, border-color .12s;
}
.prow:hover { background: var(--bg-panel2); border-color: var(--line-soft); }
.prow.changed { border-color: rgba(77,163,255,.35); background: var(--accent-soft); }
.prow-top { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.pdot { width: 9px; height: 9px; border-radius: 3px; flex: none; }
.pname { font-weight: 650; font-size: 12.5px; }
.pname .en { color: var(--text-faint); font-weight: 500; font-size: 10.5px; margin-left: 5px; }
.pinfo {
  display: inline-flex; align-items: center; justify-content: center;
  width: 13px; height: 13px; border-radius: 50%; font-size: 9px; font-weight: 700;
  background: var(--line); color: var(--text-dim); cursor: help; vertical-align: 1px;
}
.preset {
  border: 0; background: none; color: var(--text-faint); cursor: pointer; font-size: 13px;
  visibility: hidden; padding: 0 2px;
}
.prow.changed .preset { visibility: visible; }
.preset:hover { color: var(--accent); }
.pval {
  margin-left: auto; width: 76px; background: var(--bg-inset); color: var(--text);
  border: 1px solid var(--line); border-radius: 6px; padding: 3px 6px;
  font-family: var(--mono); font-size: 12px; text-align: right;
}
.pval:focus { outline: none; border-color: var(--accent); }
.punit { color: var(--text-faint); font-size: 10.5px; width: 20px; }
.slider-wrap { position: relative; }
.default-tick {
  position: absolute; top: 50%; width: 2px; height: 10px; margin-left: -1px;
  transform: translateY(-50%); background: var(--text-faint); border-radius: 1px;
  pointer-events: none; opacity: .8; z-index: 1;
}
.prow input[type="range"] {
  -webkit-appearance: none; appearance: none; width: 100%; height: 4px; border-radius: 2px;
  background: linear-gradient(to right, var(--accent) var(--fill,50%), var(--line) var(--fill,50%));
  outline: none; cursor: pointer;
}
.prow input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none; width: 14px; height: 14px; border-radius: 50%;
  background: #e8eef8; border: 2px solid var(--accent); cursor: grab;
  box-shadow: 0 1px 5px rgba(0,0,0,.5);
}
.prow input[type="range"]:active::-webkit-slider-thumb { cursor: grabbing; }
.prange { display: flex; justify-content: space-between; color: var(--text-faint);
  font-size: 9.5px; font-family: var(--mono); margin-top: 2px; }

/* ---------------- viewport chrome ---------------- */
#viewport-empty {
  position: absolute; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 6px; pointer-events: none;
}
.empty-mark { font-size: 46px; color: var(--line); }
.empty-title { font-weight: 700; color: var(--text-dim); }
.empty-sub { color: var(--text-faint); font-size: 12px; }

#view-tools {
  position: absolute; top: 14px; right: 14px; display: flex; flex-direction: column; gap: 6px;
}
#view-tools button {
  width: 36px; height: 36px; border-radius: 9px; border: 1px solid var(--line);
  background: rgba(18,22,29,.88); color: var(--text-dim); cursor: pointer; font-size: 15px;
  backdrop-filter: blur(6px);
}
#view-tools button:hover { color: var(--text); border-color: var(--accent); }
#view-tools button.on { color: var(--accent); border-color: var(--accent);
  background: var(--accent-soft); }

#view-snaps {
  position: absolute; bottom: 14px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 2px; padding: 4px; border-radius: 10px;
  background: rgba(18,22,29,.88); border: 1px solid var(--line);
  backdrop-filter: blur(6px);
}
#view-snaps button {
  border: 0; background: transparent; color: var(--text-dim); cursor: pointer;
  padding: 5px 11px; border-radius: 7px; font-size: 11.5px; font-weight: 700;
  font-family: inherit;
}
#view-snaps button:hover { color: var(--text); background: var(--bg-panel2); }
#view-snaps button.on { color: var(--accent); background: var(--accent-soft); }

#model-badge {
  position: absolute; top: 14px; left: 14px; padding: 7px 12px; border-radius: 9px;
  background: rgba(18,22,29,.88); border: 1px solid var(--line); backdrop-filter: blur(6px);
  font-size: 12px; color: var(--text-dim);
}
#model-badge b { color: var(--text); }
#warn-badge {
  position: absolute; bottom: 58px; left: 14px; max-width: 40%;  /* 뷰 스냅 바 위 */
  padding: 7px 30px 7px 12px; border-radius: 9px; font-size: 11.5px;
  backdrop-filter: blur(6px);
}
#warn-badge.warn {
  background: rgba(60,44,10,.85); border: 1px solid rgba(251,191,36,.4);
  color: var(--warn);
}
#warn-badge.info {
  background: rgba(12,40,30,.85); border: 1px solid rgba(74,222,128,.35);
  color: var(--ok);
}
#warn-close {
  position: absolute; top: 4px; right: 6px; border: 0; background: none;
  color: inherit; opacity: .6; cursor: pointer; font-size: 14px;
}
#warn-close:hover { opacity: 1; }

/* ---------------- witness legend + profile drawer ---------------- */
#witness-legend {
  position: absolute; top: 14px; right: 62px; width: 190px;
  padding: 9px 12px; border-radius: 10px; background: rgba(18,22,29,.9);
  border: 1px solid var(--line); backdrop-filter: blur(6px); font-size: 11px;
}
.wl-title { font-weight: 700; margin-bottom: 6px; }
.wl-bar {
  height: 10px; border-radius: 5px;
  background: linear-gradient(to right, rgb(26,20,64), rgb(115,26,140),
    rgb(204,64,102), rgb(250,140,38), rgb(255,242,153));
}
.wl-labels { display: flex; justify-content: space-between; color: var(--text-faint);
  font-size: 9.5px; font-family: var(--mono); margin-top: 3px; }
.wl-stats { margin-top: 4px; }

#profile-drawer {
  position: absolute; left: 14px; right: 14px; bottom: 60px; max-height: 62%;
  background: rgba(15,18,24,.97); border: 1px solid var(--line);
  border-radius: 12px; z-index: 15; display: flex; flex-direction: column;
  box-shadow: 0 16px 50px rgba(0,0,0,.5);
}
.pd-head { display: flex; align-items: center; gap: 10px; padding: 9px 14px;
  border-bottom: 1px solid var(--line-soft); font-size: 12.5px; }
.pd-body { overflow: auto; padding: 10px 12px 12px; }
#profile-summary { font-size: 12px; color: var(--text-dim); margin: 2px 2px 10px; }
#profile-summary b { color: var(--accent); }
#profile-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 10px;
}
.pf-card {
  background: var(--bg-panel2); border: 1px solid var(--line);
  border-radius: 10px; padding: 8px 10px; cursor: zoom-in;
  transition: border-color .15s;
}
.pf-card:hover { border-color: var(--accent); }
.pf-card.pf-changed { border-color: rgba(77,163,255,.45); }
.pf-card.zoom { grid-column: 1 / -1; cursor: zoom-out; }
.pf-card.zoom svg { height: 300px; }
.pf-head { display: flex; align-items: center; justify-content: space-between;
  gap: 6px; font-size: 11.5px; font-weight: 700; margin-bottom: 5px; }
.pf-chips { display: flex; gap: 4px; flex-wrap: wrap; justify-content: flex-end; }
.pf-chip {
  font-family: var(--mono); font-size: 9.5px; font-weight: 500;
  background: var(--bg-inset); border: 1px solid var(--line-soft);
  border-radius: 4px; padding: 1px 5px; color: var(--text-faint);
}
.pf-chip.up { color: var(--ok); }
.pf-chip.down { color: var(--warn); }
.pf-card svg { width: 100%; height: 120px; display: block; }
.pf-before { fill: none; stroke: #7d8899; stroke-width: 1.4; stroke-dasharray: 4 3;
  vector-effect: non-scaling-stroke; }
.pf-after { fill: rgba(77,163,255,.06); stroke: var(--accent); stroke-width: 1.6;
  vector-effect: non-scaling-stroke; }

/* ---------------- progress overlay ---------------- */
#progress-overlay {
  position: absolute; inset: 0; background: rgba(8,10,14,.72); backdrop-filter: blur(3px);
  display: flex; align-items: center; justify-content: center; z-index: 20;
}
.prog-box {
  background: var(--bg-panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 26px 34px; text-align: center; min-width: 300px;
  box-shadow: 0 18px 60px rgba(0,0,0,.55);
}
.spinner {
  width: 34px; height: 34px; margin: 0 auto 14px; border-radius: 50%;
  border: 3px solid var(--line); border-top-color: var(--accent);
  animation: spin .9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
#prog-title { font-weight: 700; margin-bottom: 10px; }
#prog-steps { list-style: none; text-align: left; font-size: 12px; color: var(--text-faint); }
#prog-steps li { padding: 2.5px 0; }
#prog-steps li.done { color: var(--ok); }
#prog-steps li.doing { color: var(--text); }
#prog-steps li::before { content: "○ "; }
#prog-steps li.done::before { content: "● "; color: var(--ok); }
#prog-steps li.doing::before { content: "◐ "; color: var(--accent); }

/* ---------------- status bar ---------------- */
#statusbar {
  height: 30px; flex: none; display: flex; align-items: center; gap: 14px;
  padding: 0 14px; background: var(--bg-panel); border-top: 1px solid var(--line);
  font-size: 11.5px; color: var(--text-faint);
}
#status-text { color: var(--text-dim); }
.statusbar-note { font-size: 11px; }

/* scrollbars */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-thumb { background: var(--line); border-radius: 5px;
  border: 2px solid var(--bg-panel); }
::-webkit-scrollbar-track { background: transparent; }

/* ---------------- language toggle ---------------- */
.top-actions { display: flex; align-items: center; gap: 10px; }
#lang-toggle {
  display: flex; gap: 2px; background: var(--bg-inset); padding: 3px;
  border-radius: 8px; border: 1px solid var(--line-soft);
}
#lang-toggle button {
  border: 0; background: transparent; color: var(--text-faint); cursor: pointer;
  padding: 3px 9px; border-radius: 6px; font-size: 11px; font-weight: 800;
  font-family: inherit; letter-spacing: .04em;
}
#lang-toggle button:hover { color: var(--text); }
#lang-toggle button.on { background: var(--bg-panel2); color: var(--accent); }