/* Visteras Vector — Gradient panel, colour popover, swatches, paint-mode row.
   Dark Studio surface; orange accent (#fa7c1b) for active/selected states. */
#vgrad_panel { --vg-accent: var(--studio-orange, #fa7c1b); --vg-bg: #2b2b2b; --vg-field: #1e1e1e; --vg-line: #444; --vg-text: #ddd; --vg-dim: #8a8a8a;
  display: flex; flex-direction: column; gap: 9px; padding: 10px 12px 12px; color: var(--vg-text); font-size: 11px; user-select: none; }
.vgrad-row { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.vgrad-thumb { width: 34px; height: 34px; border: 1px solid var(--vg-line); border-radius: 3px; padding: 0; cursor: pointer; background-color: #fff; flex: none; }
.vgrad-thumb:hover { border-color: #777; }
.vgrad-iconbtn { width: 24px; height: 22px; padding: 0; border: 1px solid transparent; border-radius: 3px; background: transparent; color: #cfcfcf; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; flex: none; }
.vgrad-iconbtn svg { width: 16px; height: 16px; display: block; }
.vgrad-iconbtn:hover:not(:disabled) { background: #3a3a3a; }
.vgrad-iconbtn.active, .vgrad-iconbtn[aria-pressed="true"] { border-color: var(--vg-accent); color: var(--vg-accent); background: rgba(250, 124, 27, 0.12); }
.vgrad-iconbtn:disabled { opacity: 0.35; cursor: default; }
.vgrad-menu-btn { width: 16px; font-size: 10px; margin-left: -4px; }
.vgrad-seg { display: inline-flex; gap: 2px; padding: 1px; border: 1px solid var(--vg-line); border-radius: 4px; }
.vgrad-btn { margin-left: auto; height: 22px; padding: 0 8px; border: 1px solid var(--vg-line); border-radius: 3px; background: #333; color: var(--vg-text); font-size: 11px; cursor: pointer; }
.vgrad-btn:hover { border-color: var(--vg-accent); }
.vgrad-label { color: var(--vg-dim); }
.vgrad-field { display: inline-flex; align-items: center; gap: 3px; background: var(--vg-field); border: 1px solid var(--vg-line); border-radius: 3px; padding: 0 4px; height: 22px; }
.vgrad-field:focus-within { border-color: var(--vg-accent); }
.vgrad-field em { font-style: normal; color: var(--vg-dim); }
.vgrad-ic svg { width: 13px; height: 13px; display: block; color: var(--vg-dim); }
.vgrad-input { width: 44px; background: transparent; border: none; outline: none; color: var(--vg-text); font-size: 11px; text-align: right; font-variant-numeric: tabular-nums; }
.vgrad-input:disabled { color: #555; }
.vgrad-field:has(.vgrad-input:disabled) { opacity: 0.5; }
.vgrad-fs { position: relative; width: 30px; height: 26px; flex: none; }
.vgrad-fs-box { position: absolute; width: 18px; height: 18px; padding: 0; border: 1px solid #111; border-radius: 2px; cursor: pointer; background-color: #fff; background-size: cover; }
.vgrad-fs-fill { left: 0; top: 0; z-index: 2; }
.vgrad-fs-stroke { left: 10px; top: 8px; z-index: 1; box-shadow: inset 0 0 0 4px var(--vg-bg), inset 0 0 0 5px #111; }
.vgrad-fs-box.active { z-index: 3; outline: 1px solid var(--vg-accent); }
.vgrad-fs-box.is-none { background: #fff linear-gradient(to top right, transparent calc(50% - 1px), #e33 calc(50% - 1px), #e33 calc(50% + 1px), transparent calc(50% + 1px)) !important; }
/* slider: midpoint diamonds above the ramp, stop markers below */
.vgrad-slider { position: relative; height: 50px; margin: 0 7px; outline: none; cursor: copy; }
.vgrad-slider:focus-visible .vgrad-ramp { outline: 1px solid var(--vg-accent); }
.vgrad-ramp { position: absolute; left: 0; right: 0; top: 12px; height: 16px; border: 1px solid #111; border-radius: 2px; background-color: #fff;
  /* layer 1 = gradient (set inline by the panel), layers 2-3 = transparency checkerboard */
  background-size: 100% 100%, 8px 8px, 8px 8px; background-position: 0 0, 0 0, 4px 4px; background-repeat: no-repeat, repeat, repeat; }
.vgrad-mids, .vgrad-stops { position: absolute; left: 0; right: 0; }
.vgrad-mids { top: 0; height: 12px; }
.vgrad-stops { top: 29px; height: 20px; }
.vgrad-midpt { position: absolute; top: 2px; width: 8px; height: 8px; margin-left: -4px; padding: 0; border: 1px solid #111; background: #ddd; transform: rotate(45deg); cursor: default; }
.vgrad-midpt.selected { background: var(--vg-accent); }
.vgrad-stop { position: absolute; top: 0; width: 14px; height: 18px; margin-left: -7px; padding: 0; border: none; background: transparent; cursor: default; }
.vgrad-stop::before { content: ''; position: absolute; left: 3px; top: 0; border: 4px solid transparent; border-bottom: 5px solid #ddd; border-top: 0; }
.vgrad-stop > span { position: absolute; left: 1px; top: 5px; width: 10px; height: 10px; border: 1px solid #ddd; box-shadow: 0 0 0 1px #111; }
.vgrad-stop.selected::before { border-bottom-color: var(--vg-accent); }
.vgrad-stop.selected > span { border-color: var(--vg-accent); box-shadow: 0 0 0 1px #111, 0 0 0 3px rgba(250, 124, 27, 0.55); }
.vgrad-slider.vgrad-deleting .vgrad-stop.selected { opacity: 0.35; }
.vgrad-note { color: #e5a35a; line-height: 1.4; }
/* swatch menu */
.vgrad-menu { position: relative; margin-top: -4px; max-height: 230px; overflow: auto; background: #232323; border: 1px solid var(--vg-line); border-radius: 4px; padding: 3px; }
.vgrad-menu[hidden] { display: none; }
.vgrad-menu-item { display: flex; align-items: center; gap: 8px; padding: 4px 6px; border-radius: 3px; cursor: pointer; }
.vgrad-menu-item:hover, .vgrad-menu-item:focus { background: #3a3a3a; outline: none; }
.vgrad-chip { width: 22px; height: 14px; border: 1px solid #111; border-radius: 2px; flex: none; }
.vgrad-menu-name { flex: 1; }
.vgrad-menu-del { border: none; background: none; color: var(--vg-dim); cursor: pointer; font-size: 13px; padding: 0 3px; }
.vgrad-menu-del:hover { color: var(--vg-accent); }
.vgrad-menu-sep { height: 1px; background: var(--vg-line); margin: 3px 0; }
.vgrad-menu-add { color: var(--vg-accent); }
/* stop colour popover */
.vgrad-pop { position: fixed; z-index: 100000; width: 196px; box-sizing: border-box; padding: 8px; background: #2b2b2b; border: 1px solid #555; border-radius: 6px; box-shadow: 0 6px 24px rgba(0,0,0,0.5); color: #ddd; font-size: 11px; }
.vgrad-pop-head { font-weight: 600; margin-bottom: 6px; }
.vgrad-pop-row { display: flex; gap: 6px; align-items: center; margin-bottom: 6px; }
.vgrad-pop-row input[type="color"] { width: 32px; height: 24px; padding: 0; border: 1px solid #555; background: none; }
.vgrad-pop-row .vgrad-input { flex: 1; height: 22px; text-align: left; background: #1e1e1e; border: 1px solid #444; border-radius: 3px; padding: 0 5px; }
.vgrad-pop-swatches { display: grid; grid-template-columns: repeat(8, 1fr); gap: 3px; }
.vgrad-pop-swatches button { aspect-ratio: 1; padding: 0; border: 1px solid #111; border-radius: 2px; cursor: pointer; }
.vgrad-pop-swatches button:hover { outline: 1px solid var(--studio-orange, #fa7c1b); }
/* Swatches panel: Gradients section */
#vgrad_swatch_section { margin-top: 8px; }
.vgrad-swatch-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(22px, 1fr)); gap: 4px; }
.vgrad-swatch { aspect-ratio: 1; padding: 0; border: 1px solid #111; border-radius: 2px; cursor: pointer; }
.vgrad-swatch:hover { outline: 1px solid var(--studio-orange, #fa7c1b); }
/* Tools panel: Color · Gradient · None */
.vgrad-paint-modes { display: flex; justify-content: center; gap: 2px; margin: 2px auto 4px; }
.vgrad-paint-modes button { width: 13px; height: 13px; padding: 0; border: 1px solid #111; border-radius: 1px; background: #444; cursor: pointer; }
.vgrad-paint-modes button:hover { outline: 1px solid var(--studio-orange, #fa7c1b); }
.vgrad-paint-modes button.active { outline: 1px solid var(--studio-orange, #fa7c1b); }
.vgrad-paint-modes span { display: block; width: 100%; height: 100%; }
.vgrad-pm-color { background: #ddd; }
.vgrad-pm-gradient { background: linear-gradient(90deg, #fff, #000); }
.vgrad-pm-none { background: #fff linear-gradient(to top right, transparent calc(50% - 1px), #e33 calc(50% - 1px), #e33 calc(50% + 1px), transparent calc(50% + 1px)); }
/* paint wells carrying a gradient (colour system sets background-image) */
.is-gradient { background-size: 100% 100% !important; background-repeat: no-repeat !important; }