/* ============================================================
   COMPONENTS — buttons, tooltips, file picker, etc.
   Reusable visual elements.
   ============================================================ */

/* ---- Brand (top-left logo + name) — sits on the dark topbar ---- */
.brand { display: flex; align-items: center; gap: 8px; padding: 0 8px; font-weight: 700; letter-spacing: .02em; white-space: nowrap; color: var(--topbar-text); }
.brand-logo { width: 18px; height: 18px; border-radius: 5px; flex: none;
  background: var(--accent); }
.brand-name { font-weight: 700; color: var(--topbar-text); }
.brand-sub { color: var(--topbar-text-dim); font-weight: 500; font-size: 11px; }

.topbar-login { height: 30px; padding: 0 14px; border-radius: 7px; cursor: pointer;
  border: 1px solid var(--topbar-border); background: transparent;
  color: var(--topbar-text-muted); font: inherit; font-weight: 600; white-space: nowrap; transition: .15s; }
.topbar-login:hover { background: var(--topbar-hover-bg); border-color: var(--topbar-active-text); color: var(--topbar-text); }

.topbar-nav { display: flex; align-items: center; gap: 2px; }
.topbar-btn { display: flex; align-items: center; gap: 6px; height: 30px; padding: 0 12px;
  border-radius: 7px; border: none; background: transparent; color: var(--topbar-text-muted);
  font: inherit; font-weight: 500; cursor: pointer; white-space: nowrap; transition: .15s; }
  .topbar-btn:hover { background: var(--topbar-hover-bg); color: var(--topbar-text); }
  .topbar-btn .chev { width: 11px; height: 11px; flex: none; opacity: .6; }
  
  /* Left group (Projects / Fine Tune): tint fill + accent underline */
  .topbar-btn.active {
    background: var(--topbar-active-bg);
    color: var(--topbar-active-text);
    border-bottom: 3px solid var(--accent);
    border-radius: 6px 6px 0 0;
  }
  
  /* Right group (Measurements / BoQ / Statement): segmented bordered set */
  .topbar-nav[data-group="segmented"] { gap: 0; }
  .topbar-nav[data-group="segmented"] .topbar-btn {
    border: 1px solid var(--topbar-border);
    border-right: none;
    border-left: 1px solid var(--topbar-divider);
    border-radius: 0;
    color: var(--topbar-text-muted);
  }
  .topbar-nav[data-group="segmented"] .topbar-btn:first-child { border-left: 1px solid var(--topbar-border); border-radius: 6px 0 0 6px; }
  .topbar-nav[data-group="segmented"] .topbar-btn:last-child  { border-right: 1px solid var(--topbar-border); border-radius: 0 6px 6px 0; }
  .topbar-nav[data-group="segmented"] .topbar-btn:hover { background: var(--topbar-hover-bg); color: var(--topbar-text); }
  .topbar-nav[data-group="segmented"] .topbar-btn.active {
    background: var(--topbar-active-bg);
    color: var(--topbar-active-text);
    border-bottom: 3px solid var(--accent);
    border-radius: 0;
  }
  .topbar-nav[data-group="segmented"] .topbar-btn:first-child.active { border-radius: 6px 0 0 6px; }
  .topbar-nav[data-group="segmented"] .topbar-btn:last-child.active  { border-radius: 0 6px 6px 0; }

.topbar-proj { display: flex; align-items: center; gap: 7px; padding: 0 10px;
  color: var(--topbar-text); font-weight: 600; white-space: nowrap; }
.topbar-proj .dot { width: 6px; height: 6px; border-radius: 50%; flex: none;
  background: var(--topbar-active-text); }

#projects-dropdown { position: fixed; top: var(--topbar-h); left: 0; z-index: 30; width: 320px;
  max-height: calc(100vh - var(--topbar-h)); overflow-y: auto;
  background: var(--dd-surface);
  border-right: 1px solid var(--dd-border); border-bottom: 1px solid var(--dd-border);
  border-bottom-right-radius: 12px;
  box-shadow: var(--shadow); padding: 12px; }
#projects-dropdown[hidden] { display: none; }
.topbar-proj[hidden] { display: none; }

/* ---- Projects dropdown: three sections ---- */
/* Tune these two to taste: row height × visible rows = scroll cap. */
:root {
  --proj-row-height: 52px;     /* approx height of one .project-row */
  --proj-visible-rows: 5;      /* how many rows show before scrolling */
}
.proj-section { padding: 4px 0; }
.proj-section + .proj-section { border-top: 1px solid var(--dd-border); margin-top: 8px; padding-top: 10px; }
.proj-storage-msg { margin: 4px 0 8px; padding: 8px 10px; border-radius: 7px;
  font-size: 12px; line-height: 1.4; }
.proj-storage-msg[hidden] { display: none; }
.proj-storage-msg.warn  { background: var(--warning-soft, color-mix(in srgb, var(--warning) 14%, transparent));
  color: var(--warning); border: 1px solid color-mix(in srgb, var(--warning) 40%, transparent); }
.proj-storage-msg.error { background: color-mix(in srgb, var(--danger) 14%, transparent);
  color: var(--danger); border: 1px solid color-mix(in srgb, var(--danger) 40%, transparent); }

/* Section titles — accent blue, sentence case via CSS small-caps off */
.proj-section-title { font-size: 11px; font-weight: 600; letter-spacing: .03em;
  text-transform: uppercase; color: var(--accent); margin: 2px 4px 8px; }

/* Collapsible "Active projects" header */
.proj-collapse-header { display: flex; align-items: center; gap: 6px; width: 100%;
  background: transparent; border: none; cursor: pointer; padding: 4px 4px;
  margin-bottom: 6px; font: inherit; }
.proj-collapse-chev { width: 15px; height: 15px; flex: none; color: var(--accent);
  transition: transform .15s ease; }
.proj-collapse-header[aria-expanded="false"] .proj-collapse-chev { transform: rotate(-90deg); }
.proj-collapse-label { font-size: 11px; font-weight: 600; letter-spacing: .03em;
  text-transform: uppercase; color: var(--accent); }
.proj-count { margin-left: auto; font-size: 11px; font-weight: 500; color: var(--accent);
  background: var(--dd-count-bg); padding: 1px 8px; border-radius: 10px; }
.proj-collapse-header[aria-expanded="false"] + #project-list-scroll { display: none; }

#project-list-scroll {
  max-height: calc(var(--proj-row-height) * var(--proj-visible-rows));
  overflow-y: auto;
}

/* Archive button — secondary sharp-combo, matches the rest of the app's secondary actions */
.proj-archive-btn { display: flex; align-items: center; gap: 9px; text-align: left;
  width: 100%; height: 38px; padding: 0 10px; border-radius: 8px; border: none;
  background: transparent; color: var(--text-secondary); font: inherit; font-size: 13px; font-weight: 500;
  cursor: pointer; transition: .15s; }
.proj-archive-btn:hover { background: var(--accent-soft); color: var(--accent); }
.proj-archive-btn svg { width: 16px; height: 16px; }
.proj-archive-label { flex: 1; }
.proj-archive-chev { width: 14px !important; height: 14px !important; color: var(--text-tertiary); }

/* Archive action button on active-list rows (sits beside delete). */
.project-action.archive { color: var(--text-secondary); }
.project-action.archive:hover { color: var(--accent); background: var(--accent-soft); }

/* Row actions hidden until hover/focus (always visible on touch). */
.project-row .project-action { opacity: 0; transition: opacity .12s ease; }
.project-row:hover .project-action,
.project-row:focus-within .project-action,
.project-row .project-action.confirm-delete { opacity: 1; }
@media (hover: none) { .project-row .project-action { opacity: 1; } }


/* ---- Fine Tune dropdown ---- */
#finetune-dropdown { position: fixed; top: var(--topbar-h); left: 0; z-index: 30; width: 300px;
  background: var(--dd-surface);
  border-right: 1px solid var(--dd-border); border-bottom: 1px solid var(--dd-border);
  border-bottom-right-radius: 12px;
  box-shadow: var(--shadow); padding: 8px; }
  #finetune-dropdown[hidden] { display: none; }

  /* Visual preferences: the Fine Tune entry is a button row; flyout opens to its right */
  .ft-row-btn {
    width: 100%;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    color: inherit;
    font: inherit;
    text-align: left;
  }
  .ft-row-btn:hover { color: var(--accent); }
  .ft-chevron { width: 16px; height: 16px; flex: none; color: var(--accent); transition: transform 0.15s; }
  .ft-row-btn[aria-expanded="true"] .ft-chevron { transform: rotate(90deg); color: var(--accent); }
  
  #visprefs-flyout {
    position: fixed;
    top: var(--topbar-h);
    left: 300px;            /* sits flush against the 300px-wide Fine Tune dropdown */
    z-index: 31;
    width: 260px;
    background: var(--dd-surface);
    border-right: 1px solid var(--dd-border);
    border-bottom: 1px solid var(--dd-border);
    border-bottom-right-radius: 12px;
    box-shadow: var(--shadow);
    padding: 12px;
  }
  #visprefs-flyout[hidden] { display: none; }
  .vp-section-title { font-size: 10.5px; font-weight: 600; letter-spacing: .03em;
    text-transform: uppercase; color: var(--accent); margin: 0 0 8px; }
  .vp-section + .vp-section { border-top: 1px solid var(--dd-border); margin-top: 12px; padding-top: 10px; }
  .vp-row { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
  .vp-row:last-child { margin-bottom: 0; }
  .vp-label { flex: 1; font-size: 12.5px; font-weight: 500; color: var(--text-primary); white-space: nowrap; }

  .vp-block { margin-bottom: 10px; }
  .vp-block:last-child { margin-bottom: 0; }
  .vp-block .vp-label { display: block; margin-bottom: 6px; }
  .vp-seg { display: flex; gap: 0; border: 1px solid var(--dd-border); border-radius: 6px; overflow: hidden; }
  .vp-seg-btn {
  flex: 1;
  padding: 5px 4px;
  font-size: 11.5px;
  background: transparent;
  color: var(--text-secondary);
  border: none;
  border-right: 1px solid var(--dd-border);
  cursor: pointer;
  white-space: nowrap;
}
.vp-seg-btn:last-child { border-right: none; }
.vp-seg-btn:hover { background: var(--bg-panel-hover); }
.vp-seg-btn.active { background: var(--accent); color: #fff; }

.ft-section { padding: 10px 8px; }
.ft-section + .ft-section { border-top: 1px solid var(--dd-border); }
.ft-ico { width: 16px; height: 16px; flex: none; color: var(--accent); }
.ft-row { display: flex; align-items: center; gap: 6px; }
/* Single-line section row: icon + label on the left, control on the right */
.ft-row-head { gap: 8px; }
.ft-label { flex: 1; font-size: 12.5px; font-weight: 500; color: var(--text-primary); white-space: nowrap; }
/* Sub-row under Known dimension (State B input/eye/delete), indented to the label */
.ft-row-sub { margin-top: 8px; margin-left: 24px; }
.ft-hint { margin-top: 6px; margin-left: 24px; font-size: 10.5px; line-height: 1.4; color: var(--text-secondary); }
.ft-unit { font-size: 12px; color: var(--text-secondary); min-width: 14px; }
.ft-readout { font-size: 12px; font-weight: 500; color: var(--text-primary); min-width: 34px; text-align: center; }
.ft-btn { height: 30px; padding: 0 14px; border-radius: 7px; border: 1px solid var(--control-border);
  background: var(--control-surface); color: var(--text-primary); font: inherit; font-weight: 500;
  cursor: pointer; transition: .15s; box-shadow: var(--card-shadow); }
.ft-btn:hover { background: var(--dd-dropzone); color: var(--accent); border-color: var(--accent); }
.ft-btn-wide { width: 100%; }
.ft-btn-sm { height: 28px; padding: 0 14px; }
.ft-input-sm { flex: 0 0 56px; width: 56px; text-align: center; padding: 0 6px; }

.ft-input { flex: 1; min-width: 0; height: 30px; padding: 0 9px; border-radius: 7px;
  border: 0.5px solid var(--dd-border); background: var(--dd-row); color: var(--text-primary);
  font: inherit; }
.ft-input:focus { outline: none; border-color: var(--accent); }

.ft-range {
  flex: 1; min-width: 0;
  -webkit-appearance: none;
  appearance: none;
  height: 5px; border-radius: 3px; background: var(--dd-border);
  cursor: pointer;
}
.ft-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 15px; height: 15px; border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--dd-surface);
  cursor: pointer;
}
.ft-range::-moz-range-thumb {
  width: 15px; height: 15px; border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--dd-surface);
  cursor: pointer;
}
.ft-range::-moz-range-track {
  height: 5px; border-radius: 3px; background: var(--dd-border);
}

.ft-icon-btn { width: 30px; height: 30px; flex: none; display: flex; align-items: center;
  justify-content: center; border-radius: 7px; border: 1px solid var(--control-border);
  background: var(--control-surface); color: var(--text-secondary); cursor: pointer; transition: .15s;
  font-size: 16px; line-height: 1; }
.ft-icon-btn:hover { background: var(--dd-dropzone); color: var(--accent); border-color: var(--accent); }
.ft-icon-btn svg { width: 15px; height: 15px; }
.ft-icon-btn[aria-pressed="false"] { opacity: .45; }
.ft-icon-danger:hover { color: var(--danger, #e5484d); border-color: var(--danger, #e5484d); }

/* Scale badge on the Fine Tune button */
.scale-badge { display: inline-flex; align-items: center; height: 18px; padding: 0 6px;
  border-radius: 5px; background: var(--accent-soft); color: var(--accent);
  font-size: 11px; font-weight: 600; }
.scale-badge[hidden] { display: none; }

/* Scale input — gray, no spinner, click to edit */
#ft-scale-input {
  background: transparent;
  border: none;
  text-align: center;
  font-weight: 500;
  color: var(--text-primary);
  width: 48px;
  flex: 0 0 48px;
  padding: 0;
  -moz-appearance: textfield;
}
#ft-scale-input:hover { background: var(--dd-surface); border-radius: 6px; }
#ft-scale-input:focus {
  background: var(--dd-row);
  border: 0.5px solid var(--accent);
  border-radius: 6px;
  outline: none;
}
#ft-scale-input::-webkit-outer-spin-button,
#ft-scale-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* ---- Toolbar buttons ---- */
.tool-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 6px;
  color: var(--topbar-text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
  position: relative;
}

.tool-btn:hover {
  background: var(--topbar-hover-bg);
  color: var(--topbar-text);
}

#toolbar .tool-btn.active {
  background: var(--topbar-active-bg);
  color: var(--topbar-active-text);
  border-color: transparent;
  border-left: 3px solid var(--accent);
  border-radius: 0 6px 6px 0;
}
.bar-btn.active,
.bar-btn.pulse {
  background: var(--topbar-active-bg);
  color: var(--topbar-active-text);
  border-color: transparent;
  border-bottom: 3px solid var(--accent);
  border-radius: 6px 6px 0 0;
}

.tool-btn:disabled {
  opacity: 0.35;
  cursor: default;
  pointer-events: none;
}

.tool-btn svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Bottom bar: larger glyphs, same 36px buttons */
.bar-btn svg {
  width: 22px;
  height: 22px;
}

/* ---- Tooltips on toolbar buttons ---- */
.tool-btn::after {
  content: attr(data-tip);
  position: absolute;
  left: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  padding: 5px 9px;
  background: var(--bg-panel);
  color: var(--text-primary);
  font-size: 11.5px;
  font-weight: 500;
  border: 1px solid var(--border-subtle);
  border-radius: 5px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease 0.3s;
  box-shadow: var(--shadow-soft);
  z-index: 100;
}

.tool-btn::before {
  content: '';
  position: absolute;
  left: calc(100% + 4px);
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
  width: 6px; height: 6px;
  background: var(--bg-panel);
  border-left: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease 0.3s;
  z-index: 99;
}

.tool-btn:hover::after,
.tool-btn:hover::before { opacity: 1; }

/* ---- Bottom secondary-bar buttons: open tooltip UPWARD, not to the right ---- */
.bar-btn::after {
  left: 50%;
  top: auto;
  bottom: calc(100% + 10px);
  transform: translateX(-50%);
}
.bar-btn::before {
  left: 50%;
  top: auto;
  bottom: calc(100% + 4px);
  transform: translateX(-50%) rotate(45deg);
  /* point the arrow downward toward the button */
  border-left: none;
  border-bottom: none;
  border-right: 1px solid var(--border-subtle);
  border-top: 1px solid var(--border-subtle);
}

/* Toggle buttons in the bar (e.g. see-through) show active state via aria-pressed */
.bar-btn[aria-pressed="true"] {
  background: var(--topbar-active-bg);
  color: var(--topbar-active-text);
  border-color: transparent;
  border-bottom: 3px solid var(--accent);
  border-radius: 6px 6px 0 0;
}

/* ---- Status bar (current tool + readout) ---- */
.status-mode {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.status-mode-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

.status-readout {
  color: var(--text-secondary);
  font-size: 12.5px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.status-readout strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* ---- Right panel toggle button (chevron arrow) ---- */
#panel-toggle svg {
  width: 14px; height: 14px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 0.2s;
}

body.panel-open #panel-toggle svg {
  transform: rotate(180deg);
}

/* ---- Right panel content ---- */
.panel-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.panel-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-tertiary);
  text-align: center;
  gap: 12px;
  padding: 40px 20px;
}

.panel-empty-icon {
  width: 32px; height: 32px;
  color: var(--text-tertiary);
  opacity: 0.6;
}

.panel-empty-text {
  font-size: 12.5px;
  line-height: 1.5;
}

/* ---- Spinner (in loading overlay) ---- */
.spinner {
  width: 14px; height: 14px;
  border: 2px solid var(--border-strong);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ---- Mobile: hide tooltips ---- */
@media (max-width: 600px) {
  .tool-btn::after, .tool-btn::before { display: none; }
}

/* Temporary rotate mode (Space held) overrides tool-specific cursors */
body.rotating #canvas-container { cursor: grab !important; }
body.rotating.dragging #canvas-container { cursor: grabbing !important; }

/* ============================================================
   VIEWPORT GIZMO — bottom-right navigation widget
   Arrow buttons around the gizmo's 3D axis indicator.
   ============================================================ */

.gizmo-arrow {
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: 5px;
  color: var(--text-secondary);
  font-size: 10px;
  cursor: pointer;
  transition: all 0.15s ease;
  padding: 0;
  line-height: 1;
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(8px);
  background-color: color-mix(in srgb, var(--bg-panel) 80%, transparent);
}

.gizmo-arrow:hover {
  background: var(--bg-panel-hover);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.gizmo-arrow:active {
  transform: scale(0.92);
}

#viewport-gizmo {
  /* Subtle backdrop behind the canvas to make labels readable on light models */
  border-radius: 50%;
}


/* ============================================================
   VIEWPORT GIZMO — bottom-right navigation widget
   Arrow buttons around the gizmo's 3D axis indicator.
   ============================================================ */

   .gizmo-arrow {
    background: var(--bg-panel);
    border: 1px solid var(--border-subtle);
    border-radius: 5px;
    color: var(--text-secondary);
    font-size: 10px;
    cursor: pointer;
    transition: all 0.15s ease;
    padding: 0;
    line-height: 1;
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(8px);
    background-color: color-mix(in srgb, var(--bg-panel) 80%, transparent);
  }
  
  .gizmo-arrow:hover {
    background: var(--bg-panel-hover);
    color: var(--text-primary);
    border-color: var(--border-strong);
  }
  
  .gizmo-arrow:active {
    transform: scale(0.92);
  }
  
  #viewport-gizmo {
    /* Subtle backdrop behind the canvas to make labels readable on light models */
    border-radius: 50%;
    z-index: 5;
  }



  /* ============================================================
   MEASUREMENT LIST — rows in the right panel
   ============================================================ */

   #measurement-list {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-height: 0;      /* allow it to scroll within the flex column */
    padding-bottom: 16px;   /* replaces the panel-body bottom padding */
  }

.measurement-row {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 5px 10px;
  background: var(--dd-row);
  border: 1px solid var(--dd-row-border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.12s ease;
  box-shadow: var(--card-shadow);
}

.measurement-row:hover {
  border-color: var(--accent);
}

.measurement-row.selected {
  background: color-mix(in srgb, var(--accent) 14%, var(--dd-row));
  border-color: var(--accent);
  box-shadow: inset 3px 0 0 0 var(--accent);
}

.measurement-row.hidden-measurement {
  opacity: 0.5;
}

.measurement-row.label-hidden-measurement {
  /* Subtler than fully-hidden — measurement still shows in 3D, just no label */
  opacity: 0.75;
}

.measurement-icon {
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}
.measurement-icon svg { width: 15px; height: 15px; }

.measurement-text {
  flex: 1;
  min-width: 0;     /* allows text-overflow to work in flex */
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.measurement-name {
  font-size: 12.5px;
  font-weight: 500;
  line-height: 1.3;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Name + pen sit on one line; pen reveals on row hover */
.measurement-name-row { display: flex; align-items: center; gap: 5px; min-width: 0; }
.measurement-edit-pen {
  flex: none; width: 13px; height: 13px; padding: 0; border: none;
  background: transparent; color: var(--text-tertiary); cursor: pointer;
  opacity: 0; transition: opacity 0.12s ease;
}
.measurement-edit-pen svg { width: 12px; height: 12px; }
.measurement-row:hover .measurement-edit-pen,
.group-header:hover .measurement-edit-pen { opacity: 1; }
.measurement-edit-pen:hover { color: var(--accent); }

.measurement-value {
  font-size: 11px;
  line-height: 1.25;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
}
.measurement-row.selected .measurement-value { color: var(--accent); }

.measurement-action {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.12s ease;
  flex-shrink: 0;
  padding: 0;
}

.measurement-action:hover {
  background: var(--bg-panel);
  color: var(--text-primary);
}

.measurement-action.delete:hover {
  background: var(--danger-soft);
  color: var(--danger);
}

/* Rename input — replaces .measurement-name during editing */
.measurement-name-input {
  width: 100%;
  font-size: 12.5px;
  font-weight: 500;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-panel);
  border: 1px solid var(--accent);
  border-radius: 3px;
  padding: 1px 4px;
  margin: -2px -5px -1px -5px;  /* tighten to match the static name's footprint */
  outline: none;
  box-shadow: 0 0 0 2px var(--accent-soft);
}

.measurement-name-input::selection {
  background: var(--accent-soft);
}

/* ---- Point value+unit inline editor (rename-style) ---- */
.measurement-value-row {
  display: flex;
  align-items: center;
  gap: 5px;
  min-width: 0;
}
.measurement-value-row .measurement-edit-pen { width: 12px; height: 12px; }
.measurement-row:hover .measurement-value-row .measurement-edit-pen { opacity: 1; }

.point-value-edit {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.point-value-input {
  width: 56px;
  font-size: 11px;
  font-family: inherit;
  text-align: right;
  color: var(--text-primary);
  background: var(--bg-panel);
  border: 1px solid var(--accent);
  border-radius: 3px;
  padding: 1px 4px;
  outline: none;
  box-shadow: 0 0 0 2px var(--accent-soft);
  font-variant-numeric: tabular-nums;
}
.point-unit-select {
  width: auto;
  font-size: 11px;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-panel);
  border: 1px solid var(--accent);
  border-radius: 3px;
  padding: 1px 2px;
  outline: none;
  box-shadow: 0 0 0 2px var(--accent-soft);
  cursor: pointer;
}

/* ---- Per-measurement color swatch + palette popup ---- */
.measurement-swatch {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  padding: 0;
  border-radius: 4px;
  border: 1px solid color-mix(in srgb, var(--text-primary) 25%, transparent);
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.measurement-swatch:hover {
  transform: scale(1.15);
  box-shadow: 0 0 0 2px var(--bg-panel-hover);
}

.color-popup {
  z-index: 1000;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  padding: 8px;
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  box-shadow: var(--shadow);
  background-color: color-mix(in srgb, var(--bg-panel) 96%, transparent);
  backdrop-filter: blur(12px);
}

.color-chip {
  width: 20px;
  height: 20px;
  padding: 0;
  border-radius: 5px;
  border: 1px solid color-mix(in srgb, var(--text-primary) 20%, transparent);
  cursor: pointer;
  transition: transform 0.12s ease;
}

.color-chip:hover {
  transform: scale(1.15);
}

.color-chip.current {
  box-shadow: 0 0 0 2px var(--bg-panel), 0 0 0 4px var(--accent);
}

/* ---- Panel controls (New group button) ---- */
.panel-controls {
  padding: 0 0 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Sticky header: sheet tabs + controls never scroll */
.sheet-tabs {
  flex: none;
  padding: 0 0 12px;
}
.panel-controls,
.statement-controls {
  flex: none;
  padding: 0 0 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.statement-period-slot {
  min-width: 0;
}
.statement-search-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.statement-search-row .group-filter-input {
  flex: 1;
  min-width: 0;
}
.statement-export-slot {
  flex: none;
}

.group-action-row {
  display: flex;
  gap: 8px;
  align-items: stretch;
}

.group-filter-input {
  width: 100%;
  height: 32px;
  padding: 0 12px;
  border-radius: 7px;
  border: 1px solid var(--dd-border);
  background: var(--control-surface);
  color: var(--text-primary);
  font: inherit;
  font-size: 12.5px;
  box-sizing: border-box;
}

.group-filter-input::placeholder {
  color: var(--text-tertiary);
}

.group-filter-input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--accent-soft);
}

.new-group-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex: 1;
  height: 34px;
  padding: 0 12px;
  border-radius: 8px;
  border: none;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 500;
  font-size: 12.5px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.new-group-btn:hover {
  background: color-mix(in srgb, var(--accent) 88%, #000);
}

.new-group-btn:disabled {
  background: var(--bg-panel-hover);
  color: var(--text-tertiary);
  cursor: not-allowed;
}

/* ---- Template actions: furled icon button beside New group ---- */
.template-menu-btn {
  flex: none;
  width: 38px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: 1px solid var(--control-border);
  background: var(--control-surface);
  color: var(--text-secondary);
  cursor: pointer;
  box-shadow: var(--card-shadow);
  transition: all 0.15s ease;
}
.template-menu-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.template-menu-btn svg { width: 16px; height: 16px; }

/* Popup with Save / Load actions */
.template-menu {
  position: absolute;
  z-index: 40;
  min-width: 150px;
  padding: 4px;
  border-radius: 8px;
  border: 1px solid var(--dd-border);
  background: var(--dd-surface);
  box-shadow: var(--shadow);
}
.template-menu button {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 10px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font: inherit;
  font-size: 12.5px;
  border-radius: 6px;
  cursor: pointer;
  text-align: left;
}
.template-menu button:hover {
  background: var(--accent-soft);
  color: var(--accent);
}

/* ---- Prompt modal input (showPrompt) ---- */
.prompt-input {
  width: 100%;
  height: 36px;
  margin: 4px 0 4px;
  padding: 0 12px;
  border-radius: 7px;
  border: 1px solid var(--dd-border);
  background: var(--control-surface);
  color: var(--text-primary);
  font: inherit;
  font-size: 13px;
  box-sizing: border-box;
}
.prompt-input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--accent-soft);
}

/* ---- Group header row ---- */
.group-header {
  position: relative;
  touch-action: none;   /* let pointer press-hold drive reorder, not scroll */
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 5px 10px;
  background: var(--dd-row);
  border: 1px solid var(--dd-row-border);
  border-radius: 8px;
  cursor: pointer;
}

.group-header:hover {
  border-color: var(--accent);
}

/* Active target: newly-drawn compatible measurements auto-join this group */
.group-header.active-target {
  background: color-mix(in srgb, var(--accent) 14%, var(--dd-row));
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}

.group-chevron {
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
  border-radius: 4px;
}

.group-chevron:hover {
  color: var(--text-primary);
}

.group-swatch {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  padding: 0;
  border-radius: 4px;
  border: 1px solid color-mix(in srgb, var(--text-primary) 25%, transparent);
  cursor: pointer;
  transition: transform 0.12s ease;
}

.group-swatch:hover {
  transform: scale(1.15);
}

.group-text {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.group-name-row { display: flex; align-items: center; gap: 5px; min-width: 0; }
.group-name {
  font-size: 12.5px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.group-total {
  font-size: 11px;
  font-weight: 500;
  line-height: 1.25;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* Grouped member rows — indented under their header, group color on the edge */
.measurement-row.grouped-member {
  margin-left: 14px;
  border-left: 4px solid var(--group-stripe, var(--accent));
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}

/* "Drop at end of group" target — gives a hittable area to reorder to last */
.group-dragging {
  opacity: 0.6;
  cursor: grabbing;
  outline: 1px solid var(--accent);
  border-radius: var(--radius);
}
.group-drop-before::before,
.group-drop-after::after {
  content: '';
  position: absolute;
  left: 4px;
  right: 4px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.group-drop-before::before { top: -1px; }
.group-drop-after::after { bottom: -1px; }

.group-end-zone {
  height: 14px;
  margin-left: 16px;        /* align with indented grouped members */
  border-radius: 5px;
  transition: background 0.12s ease, box-shadow 0.12s ease;
}

.group-end-zone.drop-into {
  background: var(--accent-soft);
  box-shadow: inset 0 2px 0 0 var(--accent);
}

.group-end-zone.drop-reject {
  box-shadow: inset 0 2px 0 0 var(--danger);
}

/* ---- Drag and drop ---- */
.measurement-row[draggable="true"] { cursor: grab; }
.measurement-row.dragging {
  opacity: 0.4;
  cursor: grabbing;
}

/* Drop BEFORE this row — a line accent at the top edge */
.measurement-row.drop-before {
  box-shadow: inset 0 2px 0 0 var(--accent);
}

/* Drop AFTER this row — placement line on the bottom edge (append-at-end) */
.measurement-row.drop-after {
  box-shadow: inset 0 -2px 0 0 var(--accent);
}

/* Drop INTO this group header */
.group-header.drop-into {
  border-color: var(--accent);
  background: var(--accent-soft);
}

/* Rejected drop (wrong category) */
.measurement-row.drop-reject,
.group-header.drop-reject {
  border-color: var(--danger);
  box-shadow: inset 0 0 0 1px var(--danger);
}

/* Container highlight while hovering the empty area = will ungroup */
#measurement-list.drop-unsorted {
  outline: 2px dashed color-mix(in srgb, var(--accent) 40%, transparent);
  outline-offset: -4px;
  border-radius: 6px;
}

/* Divider between grouped (top) and ungrouped (bottom) regions */
.ungroup-divider {
  height: 2px;
  background: var(--dd-dropzone-border);
  margin: 14px 6px;
}

/* Ungrouped drop region — always hittable, even when empty */
.ungrouped-region {
  flex: 1;            /* stretch from the divider to the bottom of the panel */
  min-height: 48px;
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: background 0.12s ease, outline-color 0.12s ease;
}

/* ---- Sheet tabs (top of measurements panel) ---- */
.sheet-tabs {
  display: flex;
  align-items: stretch;
  padding-bottom: 12px;
  margin-bottom: 4px;
  border-bottom: 0.5px solid var(--dd-border);
  border-radius: 0;
}

/* Horizontal scroller — tabs overflow into a thin scrollbar */
.sheet-tabs-scroller {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  flex: 1;
  min-width: 0;
}
/* Firefox only: thin native bar. In Chrome, scrollbar-width (any value
   other than auto) DISABLES all ::-webkit-scrollbar styling below —
   which made the styled 5px thumb vanish entirely. */
@supports not selector(::-webkit-scrollbar) {
  .sheet-tabs-scroller { scrollbar-width: thin; }
}
.sheet-tabs-scroller::-webkit-scrollbar { height: 5px; }
.sheet-tabs-scroller::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 3px;
}
.sheet-tabs-scroller::-webkit-scrollbar-button { display: none; width: 0; height: 0; }
.sheet-tabs-scroller::-webkit-scrollbar-track { background: transparent; }

/* Panel scrollbar — default width, theme-colored so it's visible on grey */
#measurement-list::-webkit-scrollbar { width: 12px; }
#measurement-list::-webkit-scrollbar-track { background: transparent; }
#measurement-list::-webkit-scrollbar-thumb {
  background: var(--dd-border);
  border-radius: 6px;
  border: 3px solid var(--bg-panel);   /* inset look — track padding via border */
}
#measurement-list::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }
#measurement-list { scrollbar-color: var(--dd-border) transparent; scrollbar-width: auto; }

.sheet-tab {
  position: relative;
  touch-action: none;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  border: 0.5px solid var(--dd-border);
  border-left: none;
  background: var(--control-surface);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
  flex-shrink: 0;
  transition: all 0.12s ease;
}
.sheet-tab:last-child { border-radius: 0 8px 8px 0; }

.sheet-tab:hover {
  background: var(--dd-dropzone);
  color: var(--text-primary);
}

.sheet-tab.active {
  background: var(--dd-row);
  color: var(--text-primary);
  border-bottom: 2px solid var(--accent);
  font-weight: 600;
}

.sheet-tab-label {
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sheet-tab-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  font-size: 15px;
  line-height: 1;
  border-radius: 3px;
  cursor: pointer;
  opacity: 0;
  transition: all 0.12s ease;
}

.sheet-tab:hover .sheet-tab-close { opacity: 1; }
.sheet-tab-close:hover {
  background: var(--danger-soft);
  color: var(--danger);
}

.sheet-dragging {
  opacity: 0.6;
  cursor: grabbing;
  outline: 1px solid var(--accent);
}
.sheet-drop-before::before,
.sheet-drop-after::after {
  content: '';
  position: absolute;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.sheet-drop-before::before { left: -1px; }
.sheet-drop-after::after { right: -1px; }

.sheet-tab-add {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  flex-shrink: 0;
  padding: 0;
  border-radius: 8px 0 0 8px;
  border: 0.5px solid var(--dd-border);
  background: var(--control-surface);
  color: var(--accent);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  transition: all 0.12s ease;
}

.sheet-tab-add:hover {
  background: var(--dd-dropzone);
}

.sheet-tab-input {
  width: 90px;
  font-size: 12px;
  font-weight: 500;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-panel);
  border: 1px solid var(--accent);
  border-radius: 4px;
  padding: 3px 5px;
  outline: none;
  box-shadow: 0 0 0 2px var(--accent-soft);
}

  /* ============================================================
     PROJECT DROP ZONE
     ============================================================ */
  
  #project-drop-zone {
    margin: 0 0 4px;
    padding: 18px 16px;
    border: 1.5px dashed var(--dd-dropzone-border);
    border-radius: 8px;
    background: var(--dd-dropzone);
    cursor: pointer;
    transition: all 0.15s ease;
  }
  
  #project-drop-zone:hover {
    border-color: var(--accent);
    background: var(--accent-soft);
  }
  
  #project-drop-zone.dragover {
    border-color: var(--accent);
    background: var(--accent-soft);
    border-style: solid;
  }
  
  .drop-zone-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    text-align: center;
    pointer-events: none;  /* events propagate to parent */
  }
  
  .drop-zone-icon {
    color: var(--accent);
    margin-bottom: 4px;
    line-height: 0;
  }
  
  #project-drop-zone:hover .drop-zone-icon,
  #project-drop-zone.dragover .drop-zone-icon {
    color: var(--accent);
  }
  
  .drop-zone-text {
    font-size: 12.5px;
    font-weight: 500;
    color: var(--text-primary);
  }

  .drop-zone-hint {
    font-size: 11px;
    font-weight: 400;
    color: var(--text-tertiary);
    margin-top: 4px;
  }
  
  /* ============================================================
     PROJECT LIST — placeholder, real styling in Step 3+
     ============================================================ */
  
  #project-list {
    flex: 1;
    overflow-y: auto;
    padding: 0 18px 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
  }


  /* ============================================================
   PROJECT LIST — rows in the Projects tab
   ============================================================ */

.project-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 11px;
  background: var(--dd-row);
  border: 0.5px solid var(--dd-row-border);
  border-radius: 7px;
  cursor: pointer;
  transition: all 0.12s ease;
  box-shadow: var(--card-shadow);
}

.project-row:hover {
  border-color: var(--accent);
}

.project-row.active {
  background: color-mix(in srgb, var(--accent) 12%, var(--dd-row));
  border-color: var(--accent);
}

/* Rows for not-yet-done jobs aren't clickable for "load" — dim slightly */
.project-row:not(.status-done) {
  cursor: default;
}

.project-row:not(.status-done):hover {
  background: var(--bg-canvas);
  border-color: var(--border-subtle);
}

/* Status icon — left side, 18px square */
.project-icon {
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.project-icon svg { width: 16px; height: 16px; }

/* Spinner animation for processing/pending */
.status-processing .project-icon svg,
.status-pending .project-icon svg { animation: proj-spin 0.9s linear infinite; }
@keyframes proj-spin { to { transform: rotate(360deg); } }

/* Status-specific icon colors */
.status-uploading .project-icon  { color: var(--text-secondary); }
.status-pending    .project-icon { color: var(--text-secondary); }
.status-processing .project-icon { color: var(--accent); }
.status-done       .project-icon { color: var(--success); }
.status-failed     .project-icon { color: var(--danger); }

/* Text column — name + value */
.project-text {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.project-name {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.project-status {
  font-size: 10.5px;
  color: var(--text-secondary);
}
.status-done       .project-status { color: var(--success); }
.status-processing .project-status,
.status-pending    .project-status { color: var(--accent); }
.status-failed     .project-status { color: var(--danger); }

/* Delete button + confirm state */
.project-action {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.12s ease;
  flex-shrink: 0;
  padding: 0;
}

.project-action:hover {
  background: var(--bg-panel);
  color: var(--text-primary);
}

.project-action.delete:hover {
  background: var(--danger-soft);
  color: var(--danger);
}

/* Two-step confirm — the trash icon morphs into a red checkmark
   for 3 seconds, second click within that window confirms. */
.project-action.confirm-delete {
  background: var(--danger-soft);
  color: var(--danger);
}

/* Inline rename input — reuses measurement rename styling */
.project-name-input {
  width: 100%;
  font-size: 12.5px;
  font-weight: 500;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-panel);
  border: 1px solid var(--accent);
  border-radius: 3px;
  padding: 1px 4px;
  margin: -2px -5px -1px -5px;
  outline: none;
  box-shadow: 0 0 0 2px var(--accent-soft);
}

/* Empty state — shown when no projects exist */
.project-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  text-align: center;
  padding: 24px 20px;
  font-size: 12.5px;
}

/* Edit-mode vertex cluster picker */
.vertex-picker {
  position: fixed;
  z-index: 1000;
  min-width: 140px;
  padding: 4px;
  background: var(--panel-bg, #1e1e1e);
  border: 1px solid var(--border, #3a3a3a);
  border-radius: 6px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.vertex-picker-row {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--text, #e0e0e0);
  text-align: left;
  padding: 6px 10px;
  border-radius: 4px;
  font-size: 13px;
  cursor: pointer;
}
.vertex-picker-row:hover {
  background: var(--accent, #3b82f6);
  color: #fff;
}

/* ============================================================
   BILL OF QUANTITIES — read-only all-sheets view
   ============================================================ */

   .boq-sheet-heading {
    flex-shrink: 0;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--accent);
    padding: 6px 4px;
    margin-top: 10px;
    cursor: pointer;
    user-select: none;
    transition: color 0.12s ease;
  }
  .boq-sheet-heading:hover { color: color-mix(in srgb, var(--accent) 80%, #000); }
  .boq-sheet-heading.in-contract { margin-left: 6px; }
  .boq-sheet-heading:first-child { margin-top: 0; }

  .boq-sheet-well {
    background: var(--dd-dropzone-border);
    border-radius: 8px;
    padding: 3px;
    margin-bottom: 4px;
    overflow: hidden;
    flex-shrink: 0;   /* overflow:hidden zeroes the flex min-height — never shrink, let the list scroll */
  }
  .boq-sheet-well.in-contract { margin-left: 6px; }
  .boq-sheet-well:empty { display: none; }
  .boq-sheet-well > .boq-row:first-child { border-top-left-radius: 6px; border-top-right-radius: 6px; }
  .boq-sheet-well > .boq-row:last-child { border-bottom-left-radius: 6px; border-bottom-right-radius: 6px; }
  
  .boq-row {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 6px 10px;
    background: var(--dd-row);
    border: none;
    border-bottom: 1px solid var(--dd-dropzone-border);
  }

  .boq-sheet-well > .boq-row:last-child { border-bottom: none; }
  
  .boq-swatch {
    flex: 0 0 auto;
    width: 14px;
    height: 14px;
    border-radius: 3px;
    border: 1px solid color-mix(in srgb, var(--text-primary) 20%, transparent);
  }
  
  .boq-text {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
  }
  .boq-name {
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .boq-value {
    flex: 0 0 auto;
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: baseline;
    column-gap: 4px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
  }
  .boq-value-num {
    text-align: right;
    font-variant-numeric: tabular-nums;
  }
  .boq-value-unit {
    text-align: left;
    min-width: 22px;
    color: var(--text-primary);
  }
  
  .boq-desc-btn {
    flex: 0 0 auto;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 5px;
    background: transparent;
    color: var(--text-tertiary);
    cursor: pointer;
    line-height: 1;
    transition: .15s;
  }
  .boq-desc-btn svg { width: 14px; height: 14px; }
  .boq-desc-btn:hover {
    background: var(--bg-panel-hover);
    color: var(--accent);
  }
  .boq-desc-btn { position: relative; }
  .boq-desc-btn.has-desc {
    color: var(--accent);
  }
  .boq-desc-btn.has-desc::after {
    content: "";
    position: absolute;
    top: 3px;
    right: 3px;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent);
    border: 1px solid var(--dd-row);
  }
  
  /* Description popup — larger than the color popup */
  .desc-popup {
    z-index: 1000;
    width: 260px;
    background: var(--bg-panel);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    box-shadow: var(--shadow);
    background-color: color-mix(in srgb, var(--bg-panel) 96%, transparent);
    backdrop-filter: blur(12px);
    padding: 10px;
  }
  .desc-popup-title {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 8px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .desc-popup-textarea {
    width: 100%;
    min-height: 120px;
    resize: vertical;
    box-sizing: border-box;
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    background: var(--bg-canvas);
    color: var(--text-primary);
    font: inherit;
    font-size: 13px;
    padding: 8px;
  }
  .desc-popup-textarea:focus {
    outline: none;
    border-color: var(--accent);
  }

  /* ============================================================
   STATEMENT OF WORK DONE — read-only all-sheets view
   ============================================================ */

   .stmt-sheet-heading {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--accent);
    padding: 6px 4px;
    margin-top: 10px;
    cursor: pointer;
    user-select: none;
    border-bottom: 1px solid var(--border-subtle);
    cursor: pointer;
    transition: .15s;
  }
  .stmt-sheet-heading:first-child { margin-top: 0; }
  .stmt-sheet-heading:hover {
    color: var(--accent);
    background: var(--bg-panel-hover);
  }
  
  /* BoQ headings: own look (blue, accent underline, clickable arrow) */
  .boq-sheet-heading.stmt-sheet-heading {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    letter-spacing: 0.04em;
    color: var(--accent);
    padding: 4px 2px 8px;
    margin-top: 16px;
    border-bottom: 1.5px solid var(--dd-border);
    background: transparent;
  }
  .boq-sheet-heading.stmt-sheet-heading:first-child { margin-top: 0; }

  .boq-sheet-heading.stmt-sheet-heading:hover {
    color: var(--accent);
    background: transparent;
  }

  .boq-header {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    margin-bottom: 12px;
  }
  .boq-header-title {
    flex: 1;
    font-size: 12.5px;
    font-weight: 600;
    color: var(--text-primary);
  }
  .boq-export-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    height: 30px;
    padding: 0 13px;
    border-radius: 8px;
    border: 1px solid var(--control-border);
    background: var(--control-surface);
    box-shadow: var(--card-shadow);
    color: var(--accent);
    font: inherit;
    font-size: 11.5px;
    font-weight: 500;
    cursor: pointer;
    transition: .15s;
  }
  .boq-export-btn:disabled {
    opacity: 0.45;
    cursor: default;
    pointer-events: none;
  }
  .boq-export-btn:hover {
    border-color: var(--accent);
    background: var(--accent-soft);
  }

  .boq-export-btn.boq-export-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    box-shadow: none;
  }
  .boq-export-btn.boq-export-primary:hover {
    background: color-mix(in srgb, var(--accent) 88%, #000);
    border-color: color-mix(in srgb, var(--accent) 88%, #000);
  }

.stmt-row {
  gap: 9px;
  padding: 8px 10px;
  background: var(--dd-row);
  border: 1px solid var(--dd-row-border);
  border-radius: 8px;
  box-shadow: var(--card-shadow);
}

/* Whole-row prime toggle — hue matches the measurement panel's hover.
   Only unbilled/actionable rows get the class; billed rows stay inert. */
.stmt-row.stmt-clickable { cursor: pointer; }
.stmt-row.stmt-clickable:hover {
  border-color: var(--accent);
}

.stmt-caret {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
}
.stmt-caret:hover { color: var(--text-primary); }

.stmt-member {
  margin-left: 14px;
  border-left: 4px solid var(--group-stripe, var(--accent));
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}

.stmt-f-btn {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 5px;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  line-height: 1;
  transition: .15s;
}
.stmt-f-btn svg { width: 14px; height: 14px; }
.stmt-f-btn:hover {
  background: var(--bg-panel-hover);
  color: var(--accent);
}
.stmt-f-btn { position: relative; }
.stmt-f-btn.has-photos {
  color: var(--accent);
}
.stmt-f-btn.has-photos::after {
  content: "";
  position: absolute;
  top: 3px;
  right: 3px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  border: 1px solid var(--dd-row);
}

.stmt-dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1.5px solid var(--text-tertiary);
  background: transparent;
  cursor: pointer;
  padding: 0;
}
.stmt-dot.primed {
  background: var(--accent);
  border-color: var(--accent);
}

.stmt-dot.billed {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}
.stmt-dot.barred {
  cursor: not-allowed;
}
.stmt-dot.billed-other {
  border-color: #1d6e3a;
  background: #1d6e3a;
  opacity: 1;
}

.stmt-dot.partial {
  border-color: var(--accent);
  background: linear-gradient(90deg, var(--accent) 0 50%, transparent 50% 100%);
}

.boq-export-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.stmt-eye {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
}
.stmt-eye:hover { color: var(--text-primary); }

/* Statement calendar strip (period tabs). */
.stmt-period-tabs { margin-top: 0; }
.stmt-period-tabs .sheet-tab:first-child { border-left: 0.5px solid var(--dd-border); border-radius: 8px 0 0 8px; }
.stmt-period-doc {
  display: inline-flex;
  align-items: center;
  color: var(--accent);
  margin-left: 2px;
}

/* Read-only views (BoQ, Statement): hide editing toolbar. */
body.read-only-view #toolbar { display: none !important; }

/* ===========================================================================
   AUTH GATE — full-screen login/signup overlay (Piece 2B)
   Always dark: the gate carries its own dark tokens so it looks
   right no matter the app theme. Fully opaque (covers the app).
   =========================================================================== */
   #auth-gate {
    /* Self-contained Blueprint Steel palette — gate ignores the app theme.
       Left panel = dark steel (topbar family), right panel = light theme. */
    --g-steel:      #284561;
    --g-steel-grid: #33547a;
    --g-steel-text: #ffffff;
    --g-steel-mut:  #c4d2e4;
    --g-steel-dim:  #7e93ad;
    --g-panel:      #e2e7ef;
    --g-row:        #f2f5f9;
    --g-border:     #a9bad2;
    --g-border-sub: #bcc5d3;
    --g-text:       #16191d;
    --g-text-2:     #5e6878;
    --g-text-3:     #8a96a8;
    --g-accent:     #2f86d4;
    --g-accent-sf:  rgba(47, 134, 212, 0.14);
    --g-link:       #2563b0;
    --g-danger:     #c0392b;
    --g-danger-sf:  rgba(192, 57, 43, 0.10);

    position: fixed;
    inset: 0;
    z-index: 100000;
    display: flex;
    background: var(--g-panel);
    font-family: inherit;
  }

  /* ---- Left: brand panel (steel + blueprint grid) ---- */
  #auth-gate .auth-brand-panel {
    flex: 1.15;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 44px 48px;
    background-color: var(--g-steel);
    background-image:
      linear-gradient(var(--g-steel-grid) 1px, transparent 1px),
      linear-gradient(90deg, var(--g-steel-grid) 1px, transparent 1px);
    background-size: 32px 32px;
  }
  #auth-gate .auth-brand-top {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  /* PLACEHOLDER logo — swap for an <img>/<svg> when the real logo exists */
  #auth-gate .auth-logo {
    width: 34px; height: 34px;
    border-radius: 9px;
    background: var(--g-accent);
    flex: 0 0 auto;
  }
  #auth-gate .auth-brand-name {
    color: var(--g-steel-text);
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 0.01em;
  }
  #auth-gate .auth-brand-middle { max-width: 420px; }
  #auth-gate .auth-wireframe { width: 100%; max-width: 340px; display: block; }
  #auth-gate .auth-tagline {
    color: var(--g-steel-mut);
    font-size: 15px;
    line-height: 1.5;
    margin: 14px 0 0;
  }
  #auth-gate .auth-brand-foot {
    color: var(--g-steel-dim);
    font-size: 12px;
    letter-spacing: 0.04em;
  }

  /* ---- Right: form panel (light theme) ---- */
  #auth-gate .auth-form-panel {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 24px;
  }
  #auth-gate .auth-card {
    width: 340px;
    max-width: 100%;
    display: flex;
    flex-direction: column;
    gap: 15px;
  }
  #auth-gate .auth-heading {
    color: var(--g-text);
    font-size: 20px;
    font-weight: 600;
    margin: 0;
  }
  #auth-gate .auth-subheading {
    color: var(--g-text-2);
    font-size: 13px;
    margin: -9px 0 2px;
  }

  #auth-gate .auth-field { display: flex; flex-direction: column; gap: 6px; }
  #auth-gate .auth-field label {
    color: var(--g-text-2);
    font-size: 12px;
    font-weight: 500;
  }
  #auth-gate .auth-field input {
    background: var(--g-row);
    border: 1px solid var(--g-border);
    border-radius: 8px;
    padding: 10px 12px;
    color: var(--g-text);
    font-size: 14px;
    outline: none;
    transition: border-color .12s, box-shadow .12s;
  }
  #auth-gate .auth-field input::placeholder { color: var(--g-text-3); }
  #auth-gate .auth-field input:focus {
    border-color: var(--g-accent);
    box-shadow: 0 0 0 3px var(--g-accent-sf);
  }

  #auth-gate .auth-error {
    color: var(--g-danger);
    background: var(--g-danger-sf);
    border: 1px solid var(--g-danger);
    border-radius: 8px;
    padding: 9px 12px;
    font-size: 12.5px;
  }

  #auth-gate .auth-submit {
    margin-top: 2px;
    padding: 11px 0;
    border: none;
    border-radius: 9px;
    background: var(--g-accent);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: filter .12s;
  }
  #auth-gate .auth-submit:hover { filter: brightness(1.08); }
  #auth-gate .auth-submit:disabled { opacity: .6; cursor: default; }

  #auth-gate .auth-switch {
    text-align: center;
    color: var(--g-text-2);
    font-size: 12.5px;
    margin-top: 2px;
  }
  #auth-gate .auth-switch button {
    background: none;
    border: none;
    color: var(--g-link);
    font-size: 12.5px;
    font-weight: 600;
    cursor: pointer;
    padding: 0 2px;
  }
  #auth-gate .auth-switch button:hover { text-decoration: underline; }

  /* Narrow screens: drop the brand panel, keep the form */
  @media (max-width: 760px) {
    #auth-gate .auth-brand-panel { display: none; }
  }
  
  /* ── Account chip + avatar in the topbar ── */
  .topbar-login { position: relative; }
  .account-chip {
    display: inline-flex;
    align-items: center;
    padding: 0;
    background: transparent;
    border: none;
    cursor: pointer;
  }
  .account-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    transform: translateY(3px);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1.5px solid rgba(255, 255, 255, 0.18);
    user-select: none;
  }
  .account-chip:hover .account-avatar { filter: brightness(1.08); }

  /* ── Account dropdown ── */
  .account-menu {
    position: fixed;
    width: 272px;
    background: var(--dd-surface);
    border: 1px solid var(--dd-border);
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
    z-index: 2000;
  }
  .am-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 16px 14px;
    background: var(--dd-row);
    border-bottom: 1px solid var(--dd-row-border);
  }
  .am-avatar {
    width: 42px; height: 42px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    font-size: 15px; font-weight: 600;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
  }
  .am-id { display: flex; flex-direction: column; min-width: 0; }
  .am-name {
    font-size: 14px; font-weight: 600; color: var(--text-primary);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  }
  .am-email {
    font-size: 12px; color: var(--text-secondary);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  }
  .am-rows { padding: 6px; }
  .am-row {
    display: flex; align-items: center; gap: 10px;
    width: 100%;
    padding: 9px 10px;
    border: none;
    background: transparent;
    border-radius: 7px;
    color: var(--text-primary);
    font-size: 13px;
    text-align: left;
    cursor: pointer;
  }
  .am-row { font-weight: 500; }
  .am-row svg { color: var(--accent); flex-shrink: 0; }
  .am-row > span:first-of-type { flex: 1; }
  .am-row:not(:disabled):hover { background: var(--bg-panel-hover); }
  .am-row.is-stub { cursor: not-allowed; }
  .am-soon {
    font-size: 10px; color: var(--text-tertiary);
    border: 1px solid var(--border-strong);
    border-radius: 4px; padding: 1px 5px;
    flex-shrink: 0;
  }
  .am-divider { height: 1px; background: var(--dd-row-border); margin: 6px 4px; }
  .am-logout { color: var(--danger); font-weight: 600; }
  .am-logout svg { color: var(--danger); }
  .am-logout:hover { background: var(--danger-soft); }


  /* ── Account settings modal ── */
  .settings-overlay {
    position: fixed;
    inset: 0;
    z-index: 100000;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 5vh 16px;
    background: rgba(8, 12, 18, 0.55);
    overflow-y: auto;
  }
  .settings-modal {
    width: 480px;
    max-width: 100%;
    background: var(--bg-panel);
    border: 1px solid var(--border-strong);
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
  }
  .sm-head {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 20px;
    background: var(--dd-row);
    border-bottom: 1px solid var(--dd-row-border);
  }
  .sm-title { font-size: 16px; font-weight: 600; color: var(--text-primary); }
  .sm-close {
    background: transparent; border: none; cursor: pointer;
    color: var(--text-secondary); display: flex; padding: 2px;
    border-radius: 6px;
  }
  .sm-close:hover { background: var(--bg-panel-hover); }
  .sm-body { padding: 20px; display: flex; flex-direction: column; gap: 18px; }
  .sm-section { display: flex; flex-direction: column; }
  .sm-label {
    font-size: 12px; font-weight: 600; color: var(--accent);
    text-transform: uppercase; letter-spacing: 0.4px; margin-bottom: 8px;
  }
  .sm-label-danger { color: var(--danger); }
  .sm-card {
    background: var(--dd-row);
    border: 1px solid var(--dd-row-border);
    border-radius: 10px;
    overflow: hidden;
  }

  /* profile */
  .sm-identity {
    display: flex; align-items: center; gap: 14px;
    padding: 16px;
    border-bottom: 1px solid var(--border-subtle);
  }
  .sm-avatar {
    width: 52px; height: 52px; border-radius: 50%;
    background: var(--accent); color: #fff;
    font-size: 18px; font-weight: 600;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
  }
  .sm-id { display: flex; flex-direction: column; min-width: 0; }
  .sm-name { font-size: 15px; font-weight: 600; color: var(--text-primary); }
  .sm-email { font-size: 13px; color: var(--text-secondary); }
  .sm-badge {
    margin-left: auto; display: inline-flex; align-items: center; gap: 6px;
    font-size: 12px; font-weight: 600;
  }
  .sm-badge.is-active { color: var(--success); }
  .sm-badge.is-pending { color: var(--warning); }
  .sm-dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
  .sm-field {
    padding: 16px; display: flex; flex-direction: column; gap: 12px;
    border-bottom: 1px solid var(--border-subtle);
  }
  .sm-field label { font-size: 12px; color: var(--text-secondary); }
  .sm-field input {
    height: 36px; padding: 0 10px;
    border: 1px solid var(--border-strong);
    border-radius: 7px;
    background: var(--control-surface);
    color: var(--text-primary);
    font-size: 13px;
    width: 100%;
    box-sizing: border-box;
  }
  .sm-field input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
  .sm-field-actions { display: flex; align-items: center; justify-content: flex-end; gap: 12px; }
  .sm-feedback { font-size: 12px; color: var(--text-secondary); margin-right: auto; }
  .sm-feedback.is-ok { color: var(--success); }
  .sm-feedback.is-err { color: var(--danger); }
  .sm-btn-primary {
    font-size: 13px; font-weight: 600; color: #fff;
    background: var(--accent); border: none;
    border-radius: 7px; padding: 7px 14px; cursor: pointer;
  }
  .sm-btn-primary:hover { filter: brightness(1.07); }
  .sm-btn-primary:disabled { opacity: 0.6; cursor: default; }
  .sm-passrow {
    display: flex; align-items: center; gap: 10px;
    width: 100%; padding: 13px 16px;
    background: transparent; border: none;
    text-align: left; cursor: pointer;
  }
  .sm-passrow svg { color: var(--accent); }
  .sm-passtext { display: flex; flex-direction: column; }
  .sm-passtitle { font-size: 13px; font-weight: 600; color: var(--text-primary); }
  .sm-passsub { font-size: 11px; color: var(--text-tertiary); }
  .sm-passrow .am-soon { margin-left: auto; }
  .sm-passrow.is-stub { cursor: not-allowed; }
  .sm-passrow.is-stub .sm-passtitle { color: var(--text-tertiary); }
  .sm-passrow.is-stub svg { color: var(--text-tertiary); }

  /* usage */
  .sm-usage { padding: 16px; }
  .sm-usage-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 9px; }
  .sm-usage-name {
    font-size: 13px; font-weight: 600; color: var(--text-primary);
    display: inline-flex; align-items: center; gap: 7px;
  }
  .sm-usage-name svg { color: var(--accent); }
  .sm-usage-num { font-size: 12px; color: var(--text-secondary); }
  .sm-bar { height: 8px; border-radius: 5px; background: var(--bg-panel-hover); overflow: hidden; }
  .sm-bar-fill { height: 100%; border-radius: 5px; background: var(--accent); transition: width 0.3s; }
  .sm-bar-fill.is-warn { background: var(--warning); }
  .sm-bar-fill.is-critical { background: var(--danger); }
  .sm-usage-sub { font-size: 11px; color: var(--text-tertiary); margin-top: 7px; }

  /* preferences */
  .sm-prefrow {
    display: flex; align-items: center; gap: 10px;
    padding: 13px 16px;
    font-size: 13px; font-weight: 600; color: var(--text-primary);
  }
  .sm-prefrow:not(:last-child) { border-bottom: 1px solid var(--border-subtle); }
  .sm-prefrow svg { color: var(--text-secondary); }
  .sm-prefrow > span { }
  .sm-select {
    margin-left: auto; display: inline-flex; align-items: center; gap: 6px;
    border: 1px solid var(--border-strong); border-radius: 7px;
    background: var(--control-surface); padding: 6px 10px;
    font-size: 12px; font-weight: 500; color: var(--text-primary);
  }
  .sm-select.is-disabled { color: var(--text-tertiary); cursor: not-allowed; }
  .sm-toggle {
    margin-left: auto; display: flex;
    border: 1px solid var(--border-strong); border-radius: 7px; overflow: hidden;
  }
  .sm-toggle button {
    padding: 6px 12px; border: none; cursor: pointer;
    background: var(--control-surface); color: var(--text-secondary);
    font-size: 12px; font-weight: 500;
  }
  .sm-toggle button.is-on { background: var(--accent); color: #fff; }

  /* danger zone */
  .sm-danger {
    display: flex; align-items: center; gap: 12px;
    padding: 14px 16px;
    background: var(--danger-soft);
    border-color: var(--danger);
  }
  .sm-danger-text { display: flex; flex-direction: column; min-width: 0; }
  .sm-danger-title { font-size: 13px; font-weight: 600; color: var(--text-primary); }
  .sm-danger-sub { font-size: 11px; color: var(--text-secondary); }
  .sm-btn-danger {
    margin-left: auto;
    display: inline-flex; align-items: center; gap: 7px;
    font-size: 13px; font-weight: 600; color: var(--danger);
    background: transparent; border: 1px solid var(--danger);
    border-radius: 7px; padding: 6px 13px; cursor: pointer;
    white-space: nowrap;
  }
  .sm-btn-danger.is-stub { opacity: 0.65; cursor: not-allowed; }


  /* ============================================================
   STATEMENT PHOTO MODAL — opens beside the panel
   ============================================================ */

/* Re-enable the F button (was a disabled placeholder). */
.stmt-f-btn {
  cursor: pointer;
  opacity: 1;
}
.stmt-f-btn:hover {
  background: var(--bg-panel-hover);
  border-color: var(--accent);
  color: var(--text-primary);
}

.photo-modal {
  position: fixed;
  top: 56px;                 /* below the topbar */
  right: 340px;              /* sit just left of the right panel */
  width: 360px;
  max-height: calc(100vh - 80px);
  display: flex;
  flex-direction: column;
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  box-shadow: var(--shadow);
  z-index: 1200;
  overflow: hidden;
}

.photo-modal-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border-bottom: 1px solid var(--border-subtle);
}
.photo-modal-head-icon { display: inline-flex; color: var(--accent); }
.photo-modal-head-icon svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.photo-modal-count { font-size: 11px; color: var(--text-muted); }
.photo-modal-title {
  flex: 1;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.photo-modal-close {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  padding: 0 4px;
}
.photo-modal-close:hover { color: var(--text-primary); }

.photo-modal-actions {
  flex: none;
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 0 10px 10px;
}
.photo-btn-icon { display: inline-flex; }
.photo-btn-icon svg { width: 15px; height: 15px; display: block; }

.photo-capture-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 12px;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 500;
  font-size: 13px;
  cursor: pointer;
}
.photo-capture-btn:hover { background: color-mix(in srgb, var(--accent) 88%, #000); }
.photo-capture-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.photo-modal-secondary-row {
  display: flex;
  align-items: center;
  gap: 7px;
}
.photo-upload-btn,
.photo-download-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 6px 0;
  border: 1px solid color-mix(in srgb, var(--accent) 50%, transparent);
  border-radius: 8px;
  background: transparent;
  color: var(--accent);
  font-weight: 400;
  font-size: 11.5px;
  cursor: pointer;
}
.photo-upload-btn:hover,
.photo-download-btn:hover { background: var(--accent-soft); }
.photo-upload-btn:disabled,
.photo-download-btn:disabled {
  opacity: 0.5;
  color: var(--text-muted);
  border-color: var(--border-subtle);
  cursor: not-allowed;
}

.photo-modal-grid {
  flex: 1 1 auto;
  min-height: 0;       /* flex min-size floor beats max-height — remove it */
  overflow-y: auto;
  /* 3 rows of 119px tracks + 2 gaps (7px) + padding (14px) + border (2px) */
  max-height: 387px;
  grid-auto-rows: 119px;   /* fixed tracks — FF can't compress them */
  margin: 10px;
  padding: 7px;
  background: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 7px;
  align-content: start;
}
.photo-empty {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--text-tertiary);
  font-size: 12px;
  text-align: center;
  padding: 24px 0;
}
.photo-empty svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.photo-cell {
  position: relative;
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
}
.photo-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.photo-del {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  border: none;
  border-radius: 50%;
  background: rgba(0,0,0,0.6);
  color: #fff;
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
}
.photo-del:hover { background: rgba(200,0,0,0.85); }
.photo-del:disabled { opacity: 0.5; cursor: default; }

.photo-modal-status {
  padding: 8px 14px;
  font-size: 12px;
  color: var(--text-secondary);
  min-height: 16px;
  border-top: 1px solid var(--border-subtle);
}

/* ============================================================
   CAPTURE OVERLAY — fullscreen framing for 3D scene photos
   ============================================================ */
.capture-overlay {
  position: fixed;
  inset: 0;
  z-index: 1500;
  /* No background here — the dimming is done by the frame's box-shadow so
     the model stays fully visible inside the frame and dimmed outside. */
  pointer-events: none;   /* let orbit/zoom reach the canvas by default */
}
/* Interactive children re-enable pointer events. */
.capture-frame,
.capture-cancel,
.capture-hint { pointer-events: auto; }

.capture-frame {
  position: absolute;
  border: 2px solid var(--accent);
  border-radius: 4px;
  cursor: move;
  /* The huge spread shadow dims everything OUTSIDE the frame without
     covering the inside — so the model shows clearly within the frame. */
  box-shadow: 0 0 0 100vmax rgba(0, 0, 0, 0.55);
}

.capture-handle {
  position: absolute;
  width: 16px;
  height: 16px;
  background: var(--accent);
  border: 2px solid #fff;
  border-radius: 50%;
}
.capture-handle.tl { left: -8px;  top: -8px;    cursor: nwse-resize; }
.capture-handle.tr { right: -8px; top: -8px;    cursor: nesw-resize; }
.capture-handle.bl { left: -8px;  bottom: -8px; cursor: nesw-resize; }
.capture-handle.br { right: -8px; bottom: -8px; cursor: nwse-resize; }

.capture-shutter {
  position: absolute;
  right: 8px;
  bottom: 8px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 3px solid #fff;
  background: var(--accent);
  color: #fff;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
}
.capture-shutter:hover { filter: brightness(1.1); }
.capture-shutter:disabled { opacity: 0.6; cursor: default; }

.capture-cancel {
  position: fixed;
  top: 16px;
  right: 16px;
  padding: 8px 16px;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: var(--bg-panel);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
}
.capture-cancel:hover { border-color: var(--accent); }

.capture-hint {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 14px;
  border-radius: 16px;
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 12px;
  white-space: nowrap;
}

/* ---- Photo lightbox ---- */
.photo-thumb { cursor: pointer; }

.photo-lightbox {
  position: fixed;
  inset: 0;
  z-index: 1600;            /* above the photo modal (1200) + capture (1500) */
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.85);
  padding: 32px;
  overflow: hidden;
}
.photo-lightbox-img {
  max-width: 95vw;
  max-height: 95vh;
  object-fit: contain;
  border-radius: 6px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.6);
  transform-origin: center center;
  will-change: transform;
  user-select: none;
}

.photo-lightbox-close {
  position: fixed;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  background: var(--bg-panel);
  color: var(--text-primary);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  z-index: 1;
}
.photo-lightbox-close:hover { border-color: var(--accent); }

/* ============================================================
   INSPECT RESULTS PANEL — read-only photos of a clicked spot
   ============================================================ */
   .inspect-panel {
    position: fixed;
    top: 56px;
    right: 16px;
    width: 320px;
    max-height: calc(100vh - 80px);
    display: flex;
    flex-direction: column;
    background: var(--bg-panel);
    border: 1px solid var(--border-subtle);
    border-radius: 10px;
    box-shadow: var(--shadow);
    z-index: 1250;
    overflow: hidden;
  }
  .inspect-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    border-bottom: 1px solid var(--border-subtle);
  }
  .inspect-title {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--accent);
  }
  .inspect-close {
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
    padding: 0 4px;
  }
  .inspect-close:hover { color: var(--text-primary); }
  
  .inspect-grid {
    flex: 1 1 auto;
    overflow-y: auto;
    padding: 12px 14px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    align-content: start;
  }
  .inspect-cell {
    aspect-ratio: 4 / 3;
    border-radius: 8px;
    overflow: hidden;
    background: var(--bg-canvas);
    border: 1px solid var(--border-subtle);
  }
  .inspect-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    cursor: pointer;
  }
  .inspect-status {
    padding: 8px 14px;
    font-size: 12px;
    color: var(--text-secondary);
    min-height: 16px;
    border-top: 1px solid var(--border-subtle);
  }


  /* ============================================================ */
/* Archive view — full-screen overlay (mirrors auth-gate)       */
/* ============================================================ */
#archive-view { position: fixed; inset: 0; z-index: 200; display: flex;
  align-items: center; justify-content: center; padding: 24px;
  background: color-mix(in srgb, #000 60%, transparent); backdrop-filter: blur(4px); }

  .archive-card { width: 100%; max-width: 980px; max-height: 84vh; display: flex; flex-direction: column;
    background: var(--bg-panel); border: 1px solid var(--border-subtle); border-radius: 12px;
    box-shadow: var(--shadow); overflow: hidden; }
  
  .archive-head { display: flex; align-items: center; gap: 10px;
    padding: 16px 18px; border-bottom: 1px solid var(--border-subtle); }
  .archive-head-icon { display: inline-flex; color: var(--accent); }
  .archive-head-icon svg { width: 16px; height: 16px; stroke: currentColor; fill: none;
    stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
  .archive-title { font-size: 11px; font-weight: 600; letter-spacing: 0.06em;
    text-transform: uppercase; color: var(--accent); }
  .archive-count { font-size: 11px; font-weight: 500; color: var(--accent);
    background: var(--accent-soft); padding: 1px 8px; border-radius: 10px; margin-right: auto; }
  .archive-close { width: 28px; height: 28px; border: none; background: transparent;
    color: var(--text-secondary); font-size: 16px; cursor: pointer; border-radius: 6px; }
  .archive-close:hover { background: var(--bg-panel-hover); color: var(--text-primary); }
  
  .archive-list { padding: 18px; overflow-y: auto;
    display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 18px; align-content: start; }
  .archive-empty { grid-column: 1 / -1; padding: 48px 16px; text-align: center;
    color: var(--text-secondary); font-size: 13px;
    display: flex; flex-direction: column; align-items: center; gap: 8px; }
  .archive-empty svg { width: 24px; height: 24px; stroke: currentColor; fill: none;
    stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; color: var(--text-tertiary); }
  .archive-empty-hint { font-size: 12px; color: var(--text-tertiary); }
  
  .archive-card-item { background: var(--bg-panel); border: 1px solid var(--border-subtle);
    border-radius: 12px; overflow: hidden;
    transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease; }
  .archive-card-item:hover { transform: translateY(-2px); box-shadow: var(--shadow);
    border-color: var(--border-strong); }
  
  .archive-thumb { aspect-ratio: 4 / 3; background: #0b0d11; overflow: hidden;
    display: block; }
  .archive-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
  .archive-thumb.is-empty { display: flex; align-items: center; justify-content: center; }
  .archive-thumb-ph { color: var(--text-tertiary); display: flex; flex-direction: column;
    align-items: center; gap: 6px; font-size: 11px; }
  .archive-thumb-ph svg { width: 24px; height: 24px; stroke: currentColor; fill: none;
    stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
  
  .archive-card-body { padding: 13px 14px 14px; }
  .archive-card-name { font-size: 14px; color: var(--text-primary); font-weight: 500;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .archive-card-meta { font-size: 12px; color: var(--text-tertiary); margin-top: 3px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .archive-card-actions { display: flex; gap: 8px; margin-top: 12px; }
  
  .archive-action { height: 32px; padding: 0 12px; border-radius: 7px; flex: none; gap: 6px;
    border: 1px solid var(--border-subtle); background: var(--bg-panel); color: var(--text-secondary);
    font: inherit; font-size: 13px; font-weight: 500; cursor: pointer; transition: .15s;
    display: inline-flex; align-items: center; justify-content: center; }
  .archive-action:hover { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }
  .archive-action:disabled { opacity: .5; cursor: default; }
  .archive-action.primary { flex: 1; border: none; background: var(--accent); color: var(--bg-canvas); }
  .archive-action.primary:hover { filter: brightness(1.08); background: var(--accent); color: var(--bg-canvas); }
  .archive-action.icon { width: 34px; padding: 0; border-color: transparent; color: var(--text-tertiary); }
  .archive-action svg { width: 14px; height: 14px; stroke: currentColor; fill: none;
    stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
  .archive-action.danger:hover,
  .archive-action.danger.armed { color: var(--danger, #e5484d); border-color: var(--danger, #e5484d);
    background: color-mix(in srgb, var(--danger, #e5484d) 12%, transparent); }

/* DEV ONLY — manual model loader button (localhost only; see viewer-core.js) */
#dev-model-loader {
  position: fixed;
  bottom: 12px;
  left: 12px;
  z-index: 50;
  height: 32px;
  padding: 0 14px;
  border-radius: 8px;
  border: 1px dashed var(--accent);
  background: var(--dd-dropzone);
  color: var(--accent);
  font: inherit;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
}
#dev-model-loader:hover { background: var(--accent-soft); }

/* ============================================================
   TEMPLATE LOAD/MANAGE MODAL (showTemplateModal in ui.js)
   ============================================================ */
.template-card {
  width: 100%;
  max-width: 440px;
  background: var(--bg-panel);
  border: 0.5px solid var(--dd-border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 0;
  overflow: hidden;
}
.template-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--dd-border);
}
.template-title { font-size: 15px; font-weight: 600; color: var(--text-primary); }
.template-close {
  background: none; border: none; cursor: pointer;
  font-size: 22px; line-height: 1; color: var(--text-tertiary); padding: 0 4px;
}
.template-close:hover { color: var(--text-primary); }
.template-list { max-height: 50vh; overflow-y: auto; padding: 8px; }
.template-empty { padding: 24px 16px; text-align: center; font-size: 13px; color: var(--text-secondary); }
.template-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 12px; border-radius: 8px;
}
.template-row:hover { background: var(--accent-soft); }
.template-name { font-size: 13.5px; font-weight: 500; color: var(--text-primary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.template-actions { display: flex; gap: 6px; flex: none; }
.template-action {
  padding: 4px 10px; border-radius: 6px; font-size: 12px; font: inherit;
  border: 1px solid var(--dd-border); background: var(--control-surface);
  color: var(--text-primary); cursor: pointer;
}
.template-action:hover { border-color: var(--accent); background: var(--bg-panel); }
.template-load { color: var(--accent); font-weight: 500; }
.template-delete:hover { border-color: var(--danger, #e5484d); color: var(--danger, #e5484d); }

/* ============================================================
   CONFIRM DIALOG — reusable modal (showConfirm in ui.js)
   ============================================================ */
   .confirm-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: color-mix(in srgb, #0b1018 45%, transparent);
  }
  .confirm-card {
    width: 100%;
    max-width: 360px;
    background: var(--bg-panel);
    border: 0.5px solid var(--dd-border);
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 20px;
  }
  .confirm-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
  }
  .confirm-message {
    font-size: 13px;
    line-height: 1.5;
    color: var(--text-secondary);
    margin-bottom: 20px;
  }
  .confirm-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
  }
  .confirm-btn {
    height: 34px;
    padding: 0 16px;
    border-radius: 7px;
    font: inherit;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.12s ease;
  }
  .confirm-cancel {
    border: 0.5px solid var(--dd-border);
    background: var(--control-surface);
    color: var(--text-primary);
  }
  .confirm-cancel:hover { background: var(--dd-dropzone); }
  .confirm-ok {
    border: none;
    background: var(--accent);
    color: #fff;
  }
  .confirm-ok:hover { filter: brightness(1.08); }
  .confirm-ok.danger { background: var(--danger); }
  .confirm-ok.danger:hover { filter: brightness(1.08); }

  /* ---- Contract mode (BoQ panel + measurement-view locks) ---- */

/* A1 — frame enclosing a contract's header + sheets. */
.boq-contract-frame {
  border: 1.5px solid var(--accent);
  border-radius: 10px;
  padding: 8px;
  margin: 14px 0 8px;
  flex-shrink: 0;                 /* contains wells — never squeeze */
  display: flex;
  flex-direction: column;
}
.boq-contract-frame .boq-contract-header {
  margin: 0 0 6px;
  padding: 0 2px;
  background: none;
  border: none;
}
.boq-contract-label {
  display: flex;
  align-items: center;
  gap: 7px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.boq-contract-label svg { width: 13px; height: 13px; }
/* Frozen content reads slightly muted; frame padding replaces the indent. */
.boq-contract-frame .boq-sheet-well { opacity: 0.93; }
.boq-contract-frame .boq-sheet-heading { opacity: 0.85; }
.boq-contract-frame .boq-sheet-heading.in-contract,
.boq-contract-frame .boq-sheet-well.in-contract { margin-left: 0; }

/* Per-contract band in the BoQ panel: label + unlock button. */
.boq-contract-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin: 14px 0 8px;
  padding: 7px 11px;
  border-radius: 8px;
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  color: var(--accent);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* Lightweight divider for uncontracted sheets — left label + trailing rule. */
.boq-sheet-divider {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 14px 0 8px;
  padding: 0 2px;
  color: var(--accent);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.boq-sheet-divider-rule {
  flex: 1;
  height: 1px;
  background: color-mix(in srgb, var(--accent) 35%, transparent);
}

/* Unlock button — dangerous action, muted until hover. */
.boq-unlock-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  height: 24px;
  padding: 0 10px;
  border-radius: 6px;
  border: 1px solid color-mix(in srgb, var(--danger) 55%, transparent);
  background: transparent;
  color: var(--danger);
  font: inherit;
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  transition: .15s;
}
.boq-unlock-btn:hover {
  border-color: var(--danger);
  color: var(--danger);
  background: var(--danger-soft);
}

/* Locked sheet tab: subtle tint so it reads as frozen. */
.sheet-tab.sheet-locked .sheet-tab-label {
  opacity: 0.85;
}

/* Disabled lock affordance on close/delete buttons (tabs + group rows). */
.sheet-tab-close.disabled,
.measurement-action.delete.disabled {
  opacity: 0.45;
  cursor: default;
}
.sheet-tab-close.disabled:hover,
.measurement-action.delete.disabled:hover {
  background: none;
  color: inherit;
}