/* Trình mô phỏng ấn phẩm gấp — editor và trang xem chia sẻ.

   KHÔNG dùng bố cục CAD ba cột của khuôn bế: ở đây khung 3D là nhân vật chính, cột thiết lập
   chỉ là chỗ để đồ. Màu lấy lại biến của style.css (có giá trị dự phòng cho trang chia sẻ,
   nơi style.css không được nạp), không dựng hệ màu thứ hai. */

:root {
  --fs-line: var(--line, #dcdfe4);
  --fs-card: var(--card, #fff);
  --fs-ink: var(--ink, #16181d);
  --fs-mute: var(--ink-soft, #565b66);
  --fs-accent: var(--accent, #00a6d6);
  --fs-accent-bg: var(--accent-bg, #f0fbff);
  --fs-accent-ink: var(--accent-ink, #0b6c8a);
  --fs-stage: #f2f3f6;
}

/* ------------------------------------------------------------------ bố cục ----- */
.fs-wrap {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr) 380px;
  grid-template-rows: auto minmax(0, 1fr);
  grid-template-areas: "top top top" "side stage inspect";
  gap: 12px;
  height: calc(100vh - 130px);
  min-height: 600px;
}
.fs-top { grid-area: top; }
.fs-side { grid-area: side; }
.fs-stage { grid-area: stage; }
.fs-inspect { grid-area: inspect; }

@media (max-width: 1360px) {
  .fs-wrap {
    grid-template-columns: 300px minmax(0, 1fr);
    grid-template-rows: auto minmax(520px, 1fr) auto;
    grid-template-areas: "top top" "side stage" "side inspect";
    height: auto;
  }
  .fs-inspect .fs-2d-host { height: 340px; }
}
/* Điện thoại: xem trước, timeline ngay dưới, thiết lập xuống cuối dạng accordion. */
@media (max-width: 820px) {
  .fs-wrap {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto;
    grid-template-areas: "top" "stage" "inspect" "side";
    min-height: 0;
  }
  .fs-stage { min-height: 0; }
  .fs-3d-box { height: 58vh; min-height: 300px; flex: none; }
  .fs-top-actions { width: 100%; }
  .fs-top-actions .fs-btn { flex: 1; }
  .fs-3d-hint { display: none; }
}

.fs-panel, .fs-side, .fs-stage, .fs-inspect {
  background: var(--fs-card); border: 1px solid var(--fs-line); border-radius: 12px; min-height: 0;
}

/* ---------------------------------------------------------------- thanh trên --- */
.fs-top {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  padding: 8px 12px; background: var(--fs-card); border: 1px solid var(--fs-line); border-radius: 12px;
}
.fs-top .dl-name-input { max-width: 420px; }
.fs-save-note { font-size: 11px; color: var(--fs-mute); }
.fs-top-actions { margin-left: auto; display: flex; gap: 6px; flex-wrap: wrap; }

.fs-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 8px 14px; border: 1px solid var(--fs-line); border-radius: 8px; background: #fff;
  font: inherit; font-size: 12px; color: inherit; cursor: pointer; white-space: nowrap;
}
.fs-btn:hover { border-color: var(--fs-accent); }
.fs-btn:disabled { opacity: .55; cursor: progress; }
.fs-btn-primary { background: var(--fs-accent); border-color: transparent; color: #fff; font-weight: 600; }
.fs-btn-primary:hover { filter: brightness(.95); }
.fs-btn-ghost { width: 100%; margin-top: 8px; }
.fs-btn-danger { color: var(--bad-ink, #b3261e); margin-top: 10px; }
.fs-btn:focus-visible, .fs-chip:focus-visible, .fs-seg-btn:focus-visible, .fs-tool:focus-visible,
.fs-tbtn:focus-visible, .fs-drop:focus-visible, .fs-mark:focus-visible, .fs-sec summary:focus-visible {
  outline: 2px solid var(--focus, #e5007e); outline-offset: 2px;
}

/* ------------------------------------------------------------ cột thiết lập ---- */
.fs-side { overflow-y: auto; padding: 4px 0; }
.fs-sec { border-bottom: 1px solid var(--line-2, #eceef1); }
.fs-sec:last-child { border-bottom: 0; }
.fs-sec > summary {
  display: flex; align-items: baseline; justify-content: space-between; gap: 8px;
  padding: 11px 14px; cursor: pointer; list-style: none; font-size: 13px; font-weight: 600;
}
.fs-sec > summary::-webkit-details-marker { display: none; }
.fs-sec > summary::before { content: '▸'; color: var(--fs-mute); font-size: 10px; margin-right: 2px; transition: transform .15s; }
.fs-sec[open] > summary::before { transform: rotate(90deg); }
.fs-sec > summary > span { flex: 1; }
.fs-sec > summary small {
  font-weight: 400; font-size: 11px; color: var(--fs-mute);
  max-width: 50%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.fs-sec > div { padding: 0 14px 14px; }

.fs-label { font-size: 11px; color: var(--fs-mute); margin: 12px 0 5px; display: flex; gap: 6px; align-items: baseline; justify-content: space-between; }
.fs-note { font-size: 11px; line-height: 1.5; color: var(--fs-mute); margin: 8px 0 0; }
.fs-auto { font-style: normal; font-size: 10px; color: var(--fs-accent-ink); }
.fs-link { border: 0; background: none; padding: 0; font: inherit; font-size: 11px; color: var(--fs-accent-ink); cursor: pointer; text-decoration: underline; }
.fs-select, .fs-num, .fs-text {
  width: 100%; box-sizing: border-box; padding: 7px 9px; border: 1px solid var(--fs-line); border-radius: 8px;
  background: #fff; color: inherit; font: inherit; font-size: 13px;
}
.fs-num { font-family: var(--mono, ui-monospace, monospace); }
.fs-row2 { display: flex; gap: 8px; align-items: center; margin-top: 8px; }
.fs-row2 > * { flex: 1; min-width: 0; }
.fs-field { display: flex; flex-direction: column; gap: 4px; font-size: 11px; color: var(--fs-mute); }
.fs-inline { display: flex; align-items: center; gap: 8px; font-size: 12px; margin-top: 10px; }
.fs-color { width: 38px; height: 30px; padding: 0; border: 1px solid var(--fs-line); border-radius: 7px; background: none; flex: none; }

.fs-seg { display: flex; gap: 3px; padding: 3px; background: var(--neutral-bg, #f1f3f5); border-radius: 9px; margin-top: 8px; }
.fs-seg-btn {
  flex: 1; padding: 6px 6px; border: 0; border-radius: 7px; background: none; cursor: pointer;
  font: inherit; font-size: 11.5px; color: var(--fs-mute); white-space: nowrap;
}
.fs-seg-btn.is-active { background: #fff; color: var(--fs-ink); font-weight: 600; box-shadow: 0 1px 3px rgba(20, 24, 32, .12); }

.fs-dl { display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; margin: 12px 0 0; font-size: 12px; }
.fs-dl dt { color: var(--fs-mute); }
.fs-dl dd { margin: 0; font-family: var(--mono, ui-monospace, monospace); text-align: right; }

.fs-drop {
  display: flex; flex-direction: column; gap: 3px; padding: 14px; cursor: pointer;
  border: 1.5px dashed var(--fs-line); border-radius: 10px; background: var(--paper, #f6f7f8);
  font-size: 12px; text-align: center; transition: border-color .15s, background .15s;
}
.fs-drop b { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.fs-drop:hover, .fs-drop.is-over { border-color: var(--fs-accent); background: var(--fs-accent-bg); }
.fs-drop.has-file { border-style: solid; text-align: left; }
.fs-art-info { font-size: 11px; color: var(--fs-mute); font-family: var(--mono, ui-monospace, monospace); }
.fs-art-info.is-warn { color: var(--warn-ink-2, #8a4b00); font-weight: 600; }
.fs-art-info.is-bad { color: var(--bad-ink, #b3261e); font-weight: 600; }

.fs-tools { display: flex; gap: 4px; margin-top: 8px; }
.fs-tool {
  flex: 1; height: 32px; border: 1px solid var(--fs-line); border-radius: 7px; background: #fff;
  font-size: 15px; cursor: pointer; color: inherit;
}
.fs-tool:hover { border-color: var(--fs-accent); }
.fs-tool.is-active { background: var(--fs-accent-bg); border-color: var(--fs-accent); color: var(--fs-accent-ink); }
.fs-tool-del:hover { border-color: var(--bad-line, #e7a39e); color: var(--bad-ink, #b3261e); }

/* ---------------------------------------------------------------- sân khấu 3D -- */
.fs-stage { display: flex; flex-direction: column; overflow: hidden; }
.fs-3d-box { position: relative; flex: 1; min-height: 300px; background: var(--fs-stage); }
.fs-3d-host { position: absolute; inset: 0; }
.fs-3d-host > canvas, canvas.fs-3d { width: 100%; height: 100%; display: block; cursor: grab; }
.fs-3d-host > canvas:active { cursor: grabbing; }
.fs-3d-tools { position: absolute; top: 10px; right: 10px; display: flex; gap: 6px; z-index: 2; }
.fs-3d-hint {
  position: absolute; left: 12px; bottom: 8px; margin: 0; font-size: 11px; color: var(--fs-mute);
  pointer-events: none; opacity: .8;
}
.no-3d .fs-3d-box { display: flex; align-items: center; justify-content: center; padding: 20px; text-align: center; color: var(--fs-mute); font-size: 13px; }

.fs-scenes { display: flex; gap: 6px; padding: 10px 12px 0; overflow-x: auto; scrollbar-width: thin; }
.fs-chip {
  flex: none; padding: 6px 11px; border: 1px solid var(--fs-line); border-radius: 999px;
  background: #fff; font: inherit; font-size: 11.5px; color: inherit; cursor: pointer; white-space: nowrap;
}
.fs-chip:hover { border-color: var(--fs-accent); }
.fs-chip.is-active { background: var(--fs-ink); border-color: var(--fs-ink); color: #fff; }
.fs-3d-tools .fs-chip { background: rgba(255, 255, 255, .92); }
.fs-3d-tools .fs-chip.is-active { background: var(--fs-ink); }

/* ---------------------------------------------------------------- timeline ----- */
.fs-timeline {
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
  padding: 10px 12px 12px;
}
.fs-tbtn {
  width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--fs-line); background: #fff;
  cursor: pointer; font-size: 13px; color: inherit; flex: none;
}
.fs-tbtn-main { width: 40px; height: 40px; background: var(--fs-ink); color: #fff; border-color: var(--fs-ink); font-size: 14px; }
.fs-track { flex: 1; min-width: 220px; display: flex; align-items: center; gap: 8px; }
.fs-end { font-size: 11px; color: var(--fs-mute); flex: none; }
.fs-range { position: relative; flex: 1; padding-top: 16px; }
.fs-range input { width: 100%; margin: 0; accent-color: var(--fs-accent); }
.fs-marks { position: absolute; left: 8px; right: 8px; top: 0; height: 14px; pointer-events: none; }
.fs-mark {
  position: absolute; transform: translateX(-50%); top: 0;
  min-width: 16px; height: 14px; padding: 0 3px; border: 0; border-radius: 4px;
  background: var(--neutral-bg, #f1f3f5); color: var(--fs-mute); font-size: 9.5px; font-weight: 700;
  cursor: pointer; pointer-events: auto; line-height: 14px;
}
.fs-mark:hover { background: var(--fs-accent); color: #fff; }
.fs-step-label { width: 100%; font-size: 12px; color: var(--fs-mute); min-height: 16px; padding-left: 122px; }
@media (max-width: 820px) { .fs-step-label { padding-left: 0; } }

/* ------------------------------------------------------------- sơ đồ + kiểm tra -- */
.fs-inspect { display: flex; flex-direction: column; padding: 10px 12px 12px; overflow-y: auto; }
.fs-inspect-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.fs-inspect-head .fs-seg { margin-top: 0; flex: 1; max-width: 220px; }
.fs-inspect-head .fs-inline { margin-top: 0; font-size: 11px; color: var(--fs-mute); }
.fs-2d-host { position: relative; height: 300px; flex: none; margin-top: 10px; background: var(--canvas-bg, #dfe2e6); border-radius: 9px; overflow: hidden; }
.fs-2d-host > canvas { display: block; }
.fs-legend { display: flex; flex-wrap: wrap; gap: 4px 12px; font-size: 10.5px; color: var(--fs-mute); margin-top: 8px; }
.fs-legend i { display: inline-block; width: 16px; height: 0; border-top: 2px dashed; margin-right: 4px; vertical-align: middle; }
.fs-legend .k-valley { color: #e2342f; }
.fs-legend .k-mountain { color: #1d5fd6; }
.fs-legend .k-mountain i { border-top-style: dotted; }
.fs-legend .k-bleed { color: #e2342f; }
.fs-legend .k-bleed i { border-top-width: 1px; }
.fs-legend .k-safe { color: #12a150; }
.fs-legend .k-safe i { border-top-style: dotted; }
.fs-issues { display: flex; flex-direction: column; gap: 6px; }
.fs-issue { margin: 0; padding: 7px 10px; border-radius: 8px; font-size: 11.5px; line-height: 1.45; border: 1px solid; }
.fs-issue.is-bad { background: var(--bad-bg, #fdeceb); border-color: var(--bad-line, #e7a39e); color: var(--bad-ink, #b3261e); }
.fs-issue.is-warn { background: var(--warn-bg-2, #fff3e0); border-color: var(--warn-line-2, #e6a34d); color: var(--warn-ink-2, #8a4b00); }
.fs-issue.is-info { background: var(--info-bg, #eaf4fb); border-color: var(--info-line, #7fb8dd); color: var(--info-ink, #0b5e91); }
.fs-issue.is-ok { background: var(--ok-bg, #ecf9f1); border-color: var(--ok-line, #7bcfa0); color: var(--ok-ink, #0a7d3c); }

/* ------------------------------------------------------------------ hộp thoại -- */
.fs-dialog {
  width: min(460px, calc(100vw - 32px)); border: 1px solid var(--fs-line); border-radius: 14px;
  padding: 16px 18px 18px; box-shadow: var(--shadow-2, 0 18px 44px rgba(20, 24, 32, .25)); color: var(--fs-ink);
}
.fs-dialog::backdrop { background: var(--overlay, rgba(20, 22, 28, .4)); }
.fs-dialog header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.fs-dialog h3 { margin: 0; font-size: 15px; }
.fs-x { border: 0; background: none; font-size: 15px; cursor: pointer; color: var(--fs-mute); padding: 4px; }
.fs-dialog .fs-row2 .fs-btn { width: 100%; }
.fs-dialog .fs-link { display: inline-block; margin-top: 10px; }

/* ======================================================== trang xem chia sẻ ==== */
body.fs-public {
  margin: 0; background: #eceef2; color: var(--fs-ink);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
.fs-public * { box-sizing: border-box; }
.fv-wrap { max-width: 1320px; margin: 0 auto; padding: 18px 16px; }
.fv-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.fv-title { font-size: 22px; font-weight: 700; margin: 0; }
.fv-sub { color: var(--fs-mute); font-size: 14px; }
.fv-badge { margin-left: auto; font-size: 12px; color: var(--fs-mute); border: 1px solid var(--fs-line); border-radius: 999px; padding: 3px 10px; background: #fff; }
.fv-main { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 16px; align-items: start; }
@media (max-width: 900px) { .fv-main { grid-template-columns: minmax(0, 1fr); } }
.fv-stage { background: #fff; border: 1px solid var(--fs-line); border-radius: 14px; overflow: hidden; }
.fv-3d-box { height: min(66vh, 640px); flex: none; }
.fv-2d { position: absolute; inset: 0; margin: 0; height: auto; border-radius: 0; }
.fv-note { font-size: 12px; color: var(--fs-mute); margin: 0 12px 12px; }
.fv-side { display: flex; flex-direction: column; gap: 12px; }
.fv-card { background: #fff; border: 1px solid var(--fs-line); border-radius: 12px; padding: 12px 14px; }
.fv-card h2 { font-size: 12px; text-transform: uppercase; letter-spacing: .05em; color: var(--fs-mute); margin: 0 0 8px; }
.fv-card .fv-note { margin: 0 0 6px; }
.fv-row { display: flex; justify-content: space-between; gap: 10px; font-size: 13px; padding: 4px 0; border-bottom: 1px solid var(--line-2, #eceef1); }
.fv-row:last-child { border-bottom: 0; }
.fv-row b { font-weight: 600; text-align: right; }
.fv-error { background: #fff; border: 1px solid var(--fs-line); border-radius: 14px; padding: 30px; text-align: center; grid-column: 1 / -1; }
.fv-foot { font-size: 12px; color: var(--fs-mute); text-align: center; margin-top: 18px; }
.fv-foot a { color: inherit; }