/* Bild-Studio (Tools › Bild-Studio). Panels follow the app theme (--k-* tokens); the work area stays a neutral dark grey
   like in professional editors so colours are judged against a calm background. */
#image-studio-view {
  --is-bg: var(--k-surface, #15171c);
  --is-panel: var(--k-surface-2, #1c1f26);
  --is-raise: var(--k-surface-3, #262a33);
  --is-line: var(--k-line, rgba(255, 255, 255, .09));
  --is-text: var(--k-text, #e8eaf0);
  --is-muted: var(--k-muted, #9aa1b1);
  --is-accent: var(--k-accent, #22b8cf);
  --is-accent-ink: var(--k-accent-ink, #04151a);
  --is-stage: #2a2c31;
  --is-danger: var(--k-danger, #ef4444);
  --is-radius: 10px;
  --is-solid: #171b22;          /* opaque base under floating surfaces (menus, dialogs): the panel tokens are translucent */
  --is-float: linear-gradient(var(--is-panel), var(--is-panel)), var(--is-solid);
  color: var(--is-text);
}
:root[data-theme="light"] #image-studio-view { --is-solid: #ffffff; }
.is-root { position: relative; }
.is-root.is-busy { cursor: progress; }
.is-root.is-full { position: fixed; inset: 0; z-index: 1200; background: var(--is-bg); padding: 0; }
body.is-studio-full { overflow: hidden; }

/* ---------- start, batch */
.is-start, .is-batch { display: grid; gap: 20px; padding: 4px 0 32px; }
.is-start-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 12px 24px; }
.is-start-head h2 { margin: 0; }
.is-start-head .help { max-width: 640px; margin: 0; }
.is-start-actions { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 14px; }
.is-card { display: grid; gap: 6px; text-align: left; padding: 18px; border-radius: 14px; border: 1px solid var(--is-line); background: var(--is-panel); color: var(--is-text); cursor: pointer;
  transition: transform .16s cubic-bezier(.2, .8, .2, 1), border-color .16s; font: inherit; }
.is-card:hover { border-color: color-mix(in srgb, var(--is-accent) 55%, transparent); }
.is-card:active { transform: scale(.98); }
.is-card strong { font-size: 1.05rem; }
.is-card span:last-child { color: var(--is-muted); font-size: .9rem; line-height: 1.45; }
.is-card-glyph { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 10px; background: color-mix(in srgb, var(--is-accent) 16%, transparent); color: var(--is-accent); font-size: 1.2rem; }
.is-section-title { margin: 6px 0 -6px; font-size: 1rem; }
.is-projects { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 14px; }
.is-proj { position: relative; display: grid; gap: 4px; padding: 10px; border-radius: 12px; border: 1px solid var(--is-line); background: var(--is-panel); cursor: pointer; }
.is-proj:hover, .is-proj:focus-visible { border-color: var(--is-accent); outline: none; }
.is-proj-thumb { aspect-ratio: 4 / 3; border-radius: 8px; background: var(--is-stage) center / contain no-repeat; }
.is-proj span { color: var(--is-muted); font-size: .82rem; }
.is-proj-del { position: absolute; top: 14px; right: 14px; min-width: 28px; height: 28px; padding: 0 8px; border-radius: 14px; border: 0; background: rgba(0, 0, 0, .6); color: #fff; cursor: pointer; opacity: 0; transition: opacity .15s; }
.is-proj:hover .is-proj-del, .is-proj:focus-within .is-proj-del, .is-proj-del[data-armed="1"] { opacity: 1; }
.is-proj-del[data-armed="1"] { background: var(--is-danger); }

/* ---------- editor shell */
.is-app { display: grid; grid-template-columns: minmax(0, 1fr); grid-template-rows: auto auto minmax(0, 1fr) auto; position: relative; height: calc(100dvh - var(--tarvi-head, 132px) - 40px); min-height: 520px;
  border: 1px solid var(--is-line); border-radius: 14px; overflow: hidden; background: var(--is-bg); }
.is-full .is-app { height: 100dvh; border-radius: 0; border: 0; }
.is-menubar { display: flex; align-items: center; gap: 8px; padding: 4px 8px; border-bottom: 1px solid var(--is-line); background: var(--is-panel); min-width: 0; }
.is-menus { display: flex; gap: 2px; overflow-x: auto; scrollbar-width: none; }
.is-menu-wrap { position: relative; }
.is-menu-btn { border: 0; background: none; color: var(--is-text); padding: 6px 10px; border-radius: 7px; font: inherit; font-size: .9rem; cursor: pointer; white-space: nowrap; }
.is-menu-btn:hover, .is-menu-btn[aria-expanded="true"] { background: var(--is-raise); }
.is-menu { position: fixed; z-index: 1300; min-width: 260px; max-height: 70vh; overflow-y: auto; padding: 6px; border-radius: 10px; border: 1px solid var(--is-line);
  background: var(--is-float); box-shadow: 0 18px 40px rgba(0, 0, 0, .35); display: grid; }
.is-menu-wrap > .is-menu { position: fixed; }
.is-menu button { display: flex; justify-content: space-between; gap: 18px; padding: 7px 10px; border: 0; border-radius: 6px; background: none; color: var(--is-text); font: inherit; font-size: .88rem; text-align: left; cursor: pointer; }
.is-menu button:hover, .is-menu button:focus-visible { background: color-mix(in srgb, var(--is-accent) 18%, transparent); outline: none; }
.is-menu kbd { color: var(--is-muted); font: inherit; font-size: .78rem; }
.is-menu hr { border: 0; border-top: 1px solid var(--is-line); margin: 5px 4px; }
.is-menu-head { padding: 8px 10px 3px; color: var(--is-muted); font-size: .74rem; text-transform: uppercase; letter-spacing: .06em; }
.is-pop { position: absolute; bottom: 100%; right: 0; }
.is-doc-title { flex: 1; min-width: 0; color: var(--is-muted); font-size: .82rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; text-align: center; }
.is-menubar-actions { display: flex; gap: 6px; flex-shrink: 0; }
.is-btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 32px; padding: 0 12px; border-radius: 8px; border: 1px solid var(--is-line);
  background: var(--is-raise); color: var(--is-text); font: inherit; font-size: .86rem; cursor: pointer; white-space: nowrap; transition: transform .12s, background .12s; }
.is-btn:hover:not(:disabled) { border-color: color-mix(in srgb, var(--is-accent) 45%, var(--is-line)); }
.is-btn:active:not(:disabled) { transform: scale(.97); }
.is-btn:disabled { opacity: .45; cursor: not-allowed; }
.is-btn.is-primary { background: var(--is-accent); color: var(--is-accent-ink); border-color: transparent; font-weight: 600; }
.is-btn.on { background: color-mix(in srgb, var(--is-accent) 25%, var(--is-raise)); }
.is-btn.is-icon { width: 34px; padding: 0; font-size: 1rem; }
.is-panel-toggle { display: none; }
.is-link { border: 0; background: none; color: var(--is-accent); padding: 4px 0; font: inherit; font-size: .86rem; cursor: pointer; text-align: left; }

.is-optionsbar { display: flex; align-items: center; gap: 14px; padding: 6px 10px; min-height: 42px; border-bottom: 1px solid var(--is-line); background: var(--is-panel); overflow-x: auto; scrollbar-width: thin; }
.is-opt-title { font-size: .85rem; white-space: nowrap; }
.is-opt { display: inline-flex; align-items: center; gap: 7px; font-size: .82rem; color: var(--is-muted); white-space: nowrap; }
.is-opt input[type=range] { width: 110px; accent-color: var(--is-accent); }
.is-opt output { min-width: 46px; color: var(--is-text); font-variant-numeric: tabular-nums; }
.is-opt select, .is-opt input[type=number] { background: var(--is-raise); color: var(--is-text); border: 1px solid var(--is-line); border-radius: 7px; padding: 4px 6px; font: inherit; font-size: .82rem; max-width: 190px; }
.is-opt input[type=number] { width: 72px; }
.is-opt-check { gap: 5px; }
.is-hint { color: var(--is-muted); font-size: .8rem; line-height: 1.45; }
.is-hint.warn { color: var(--k-warn, #f59e0b); }

.is-main { display: grid; grid-template-columns: auto minmax(0, 1fr) 300px; min-height: 0; }
.is-no-panels .is-main { grid-template-columns: auto minmax(0, 1fr) 0; }
.is-no-panels .is-panels { display: none; }
.is-tools { display: grid; grid-auto-flow: column; grid-template-rows: repeat(18, 36px); grid-auto-columns: 40px; justify-items: center; align-items: center; gap: 0 2px; padding: 6px 4px; box-sizing: border-box;
  border-right: 1px solid var(--is-line); background: var(--is-panel); min-height: 0; overflow: hidden; }
.is-tool[hidden] { display: none; }
.is-tool.has-group { position: relative; }
.is-tool.has-group::after { content: ''; position: absolute; right: 3px; bottom: 3px; border: 3px solid transparent; border-right-color: currentColor; border-bottom-color: currentColor; opacity: .6; }
.is-tool-flyout { min-width: 230px; }
.is-flyout-item { display: inline-flex; align-items: center; gap: 10px; }
.is-flyout-item svg { width: 18px; height: 18px; }
.is-tool { width: 38px; height: 34px; flex-shrink: 0; display: grid; place-items: center; border: 0; border-radius: 8px; background: none; color: var(--is-muted); cursor: pointer; }
.is-tool svg { width: 20px; height: 20px; }
.is-tool:hover { color: var(--is-text); background: var(--is-raise); }
.is-tool[aria-pressed="true"] { color: var(--is-accent-ink); background: var(--is-accent); }
.is-swatches { grid-row: span 2; display: grid; gap: 2px; justify-items: center; align-self: start; padding-top: 4px; }
.is-swatch-pair { position: relative; width: 38px; height: 38px; }
.is-swatch-pair input { position: absolute; width: 24px; height: 24px; padding: 0; border: 2px solid var(--is-panel); border-radius: 5px; cursor: pointer; background: none; }
.is-swatch-pair .is-fg { top: 0; left: 0; z-index: 1; box-shadow: 0 0 0 1px var(--is-line-strong, rgba(255, 255, 255, .25)); }
.is-swatch-pair .is-bg { bottom: 0; right: 0; }
.is-swatch-actions { display: flex; gap: 2px; }
.is-swatch-actions button { width: 18px; height: 18px; border: 0; padding: 0; background: none; color: var(--is-muted); cursor: pointer; font-size: .8rem; }

.is-stage { position: relative; min-width: 0; min-height: 0; overflow: hidden; background: var(--is-stage); touch-action: none; }
.is-stage canvas { position: absolute; inset: 0; display: block; outline: none; }
.is-text-editor { position: absolute; z-index: 3; min-width: 120px; margin: 0; padding: 0; border: 1px dashed rgba(255, 255, 255, .8); outline: 1px dashed rgba(0, 0, 0, .6);
  background: transparent; resize: none; overflow: hidden; white-space: pre; caret-color: var(--is-accent); }
.is-drop { position: absolute; inset: 14px; z-index: 4; display: grid; place-items: center; border: 2px dashed var(--is-accent); border-radius: 12px; background: rgba(0, 0, 0, .45); color: #fff; font-weight: 600; pointer-events: none; }

.is-panels { display: flex; flex-direction: column; gap: 0; min-height: 0; overflow-y: auto; border-left: 1px solid var(--is-line); background: var(--is-panel); }
.is-panel { padding: 12px; border-bottom: 1px solid var(--is-line); display: grid; gap: 10px; align-content: start; }
.is-panel h3 { margin: 0; font-size: .82rem; text-transform: uppercase; letter-spacing: .06em; color: var(--is-muted); }
.is-ai textarea { width: 100%; box-sizing: border-box; resize: vertical; min-height: 64px; padding: 8px 10px; border-radius: 8px; border: 1px solid var(--is-line); background: var(--is-raise); color: var(--is-text); font: inherit; font-size: .88rem; }
.is-ai-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.is-ai-grid .is-btn { white-space: normal; line-height: 1.2; min-height: 36px; padding: 4px 8px; font-size: .8rem; }
.is-ai-meta { display: flex; justify-content: space-between; align-items: center; gap: 8px; font-size: .8rem; color: var(--is-muted); }
.is-ai-meta select { background: var(--is-raise); color: var(--is-text); border: 1px solid var(--is-line); border-radius: 6px; padding: 3px 4px; font: inherit; font-size: .8rem; }
.is-ai-busy { display: flex; align-items: center; gap: 8px; font-size: .84rem; padding: 8px; border-radius: 8px; background: color-mix(in srgb, var(--is-accent) 12%, transparent); }
.is-ai-busy span:nth-child(2) { flex: 1; }
.is-spinner { width: 16px; height: 16px; border-radius: 50%; border: 2px solid color-mix(in srgb, var(--is-accent) 30%, transparent); border-top-color: var(--is-accent); animation: is-spin .8s linear infinite; }
@keyframes is-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .is-spinner { animation-duration: 2.4s; } }

.is-layer-props { display: grid; gap: 6px; }
.is-layer-props select { background: var(--is-raise); color: var(--is-text); border: 1px solid var(--is-line); border-radius: 7px; padding: 5px 6px; font: inherit; font-size: .84rem; }
.is-opacity { display: grid; grid-template-columns: auto 1fr 44px; align-items: center; gap: 8px; font-size: .8rem; color: var(--is-muted); }
.is-opacity input { accent-color: var(--is-accent); }
.is-layer-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; max-height: 340px; overflow-y: auto; }
.is-layer { display: flex; align-items: center; gap: 6px; padding: 4px 6px; border-radius: 8px; cursor: pointer; font-size: .85rem; border: 1px solid transparent; }
.is-layer:hover { background: var(--is-raise); }
.is-layer.active { background: color-mix(in srgb, var(--is-accent) 18%, transparent); border-color: color-mix(in srgb, var(--is-accent) 40%, transparent); }
.is-layer.drop { border-top: 2px solid var(--is-accent); }
.is-layer.clipped { padding-left: 20px; }
.is-eye { width: 24px; height: 24px; border: 0; background: none; color: var(--is-text); cursor: pointer; font-size: .85rem; flex-shrink: 0; }
.is-thumb { width: 36px; height: 36px; border-radius: 5px; border: 1px solid var(--is-line); flex-shrink: 0; }
.is-mask-thumb.editing { outline: 2px solid var(--is-accent); }
.is-mask-thumb.off { opacity: .35; }
.is-adj-icon { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 5px; background: var(--is-raise); flex-shrink: 0; }
.is-layer-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.is-badge { font-size: .72rem; color: var(--is-muted); }
.is-layer-actions { position: relative; display: flex; justify-content: space-between; gap: 4px; }
.is-layer-actions button { flex: 1; height: 30px; border: 1px solid var(--is-line); border-radius: 7px; background: var(--is-raise); color: var(--is-text); cursor: pointer; font-size: .85rem; }
.is-history-list { list-style: none; margin: 0; padding: 0; max-height: 200px; overflow-y: auto; font-size: .82rem; }
.is-history-list li { padding: 4px 8px; border-radius: 6px; cursor: pointer; }
.is-history-list li:hover { background: var(--is-raise); }
.is-history-list li.current { background: color-mix(in srgb, var(--is-accent) 18%, transparent); }
.is-history-list li.future { color: var(--is-muted); font-style: italic; }
.is-status { padding: 4px 12px; font-size: .76rem; color: var(--is-muted); border-top: 1px solid var(--is-line); background: var(--is-panel); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-variant-numeric: tabular-nums; }
.is-toast { position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%); z-index: 1400; max-width: min(560px, calc(100vw - 32px)); padding: 10px 16px; border-radius: 10px;
  background: #111317; color: #f3f4f6; box-shadow: 0 10px 30px rgba(0, 0, 0, .35); font-size: .88rem; }
.is-toast.error { background: #3b0d12; color: #fecaca; }

/* ---------- groups, picked layers, smart filters */
.is-layer.picked:not(.active) { background: color-mix(in srgb, var(--is-accent) 9%, transparent); }
.is-layer.is-group .is-layer-name { font-weight: 600; }
.is-disclose { width: 18px; height: 22px; border: 0; background: none; color: var(--is-muted); cursor: pointer; padding: 0; font-size: .8rem; }
.is-folder { color: var(--is-accent); }
.is-smart-head { list-style: none; color: var(--is-muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .05em; padding: 2px 6px; }
.is-smart-filter { list-style: none; display: flex; align-items: center; gap: 4px; font-size: .8rem; padding: 1px 6px; }
.is-smart-filter.off .is-link { opacity: .5; text-decoration: line-through; }
.is-x { margin-left: auto; width: 22px; height: 22px; border: 0; border-radius: 6px; background: none; color: var(--is-muted); cursor: pointer; font-size: .95rem; line-height: 1; }
.is-x:hover { background: var(--is-raise); color: var(--is-text); }
.is-seg { display: inline-flex; gap: 2px; padding: 2px; border-radius: 9px; background: var(--is-bg); }
.is-seg .is-btn { min-height: 28px; border-color: transparent; }

/* ---------- extension panels (Pfade, Aktionen, Farbfelder, Navigator, Histogramm) */
details.is-ext-panel { display: block; }
details.is-ext-panel > summary { cursor: pointer; font-size: .82rem; text-transform: uppercase; letter-spacing: .06em; color: var(--is-muted); list-style: none; display: flex; align-items: center; gap: 6px; }
details.is-ext-panel > summary::before { content: '▸'; font-size: .7rem; transition: transform .15s; }
details.is-ext-panel[open] > summary::before { transform: rotate(90deg); }
details.is-ext-panel[open] > .is-ext-body { margin-top: 10px; display: grid; gap: 8px; }
.is-mini-list, .is-steps-mini { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; max-height: 180px; overflow-y: auto; font-size: .84rem; }
.is-mini-list li, .is-steps-mini li { display: flex; align-items: center; gap: 6px; padding: 2px 6px; border-radius: 7px; }
.is-mini-list li.active { background: color-mix(in srgb, var(--is-accent) 16%, transparent); }
.is-steps-mini { counter-reset: step; color: var(--is-muted); }
.is-steps-mini li::before { counter-increment: step; content: counter(step) '.'; min-width: 18px; }
.is-row.is-wrap { flex-wrap: wrap; }
.is-swatch-grid { display: grid; grid-template-columns: repeat(8, 1fr); gap: 4px; }
.is-swatch-cell { aspect-ratio: 1; border-radius: 5px; border: 1px solid var(--is-line); cursor: pointer; padding: 0; }
.is-swatch-cell:hover { transform: scale(1.08); }
.is-nav, .is-histo { width: 100%; height: auto; border-radius: 6px; background: var(--is-stage); cursor: pointer; }
.is-histo { cursor: default; }
.is-selective { display: grid; gap: 6px; }
.is-selective output { font-size: .8rem; color: var(--is-muted); }
.is-dialog-head { margin: 8px 0 -4px; font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; color: var(--is-muted); border-top: 1px solid var(--is-line); padding-top: 10px; }
.is-dialog.is-wide { width: min(760px, calc(100vw - 32px)); }
.is-dialog.is-wide .is-form { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); column-gap: 18px; }
.is-dialog.is-wide .is-field-check { grid-column: 1 / -1; }
.is-dialog.is-wide .is-form > h2, .is-dialog.is-wide .is-dialog-head, .is-dialog.is-wide .is-dialog-text, .is-dialog.is-wide .is-dialog-actions, .is-dialog.is-wide .is-preview-toggle { grid-column: 1 / -1; }

/* ---------- timeline, info, colour, gradient editor, shortcuts */
.is-frames { list-style: none; margin: 0; padding: 0; display: grid; gap: 3px; max-height: 200px; overflow-y: auto; }
.is-frame { display: flex; align-items: center; gap: 6px; padding: 3px 6px; border-radius: 7px; font-size: .84rem; }
.is-frame.active { background: color-mix(in srgb, var(--is-accent) 16%, transparent); }
.is-frame select { background: var(--is-raise); color: var(--is-text); border: 1px solid var(--is-line); border-radius: 6px; font: inherit; font-size: .78rem; padding: 2px 4px; }
.is-info-row { display: grid; grid-template-columns: 110px 1fr; gap: 6px; font-size: .8rem; }
.is-info-row span { color: var(--is-muted); }
.is-info-row strong { font-weight: 500; font-variant-numeric: tabular-nums; }
.is-color-row { display: grid; grid-template-columns: 18px 1fr 38px; align-items: center; gap: 8px; font-size: .8rem; }
.is-color-row input[type=range] { appearance: none; -webkit-appearance: none; height: 10px; border-radius: 5px; }
.is-color-row input[type=text] { background: var(--is-raise); color: var(--is-text); border: 1px solid var(--is-line); border-radius: 6px; padding: 4px 6px; font: inherit; }
.is-color-dot { display: inline-block; width: 12px; height: 12px; border-radius: 3px; border: 1px solid var(--is-line); }
.is-grad-editor { display: grid; gap: 8px; }
.is-grad-bar { width: 100%; height: 26px; border-radius: 6px; border: 1px solid var(--is-line); }
.is-grad-stop { display: flex; align-items: center; gap: 6px; font-size: .8rem; color: var(--is-muted); }
.is-grad-stop input[type=range] { flex: 1; min-width: 60px; accent-color: var(--is-accent); }
.is-grad-stop input[type=color] { width: 36px; height: 26px; padding: 1px; }
.is-shortcuts { display: grid; grid-template-columns: 110px 1fr; gap: 6px 14px; margin: 0; font-size: .84rem; line-height: 1.5; grid-column: 1 / -1; }
.is-shortcuts dt { color: var(--is-muted); font-weight: 600; }
.is-shortcuts dd { margin: 0; }

/* ---------- liquify */
.is-liquify { position: absolute; inset: 0; z-index: 40; display: grid; grid-template-rows: auto minmax(0, 1fr); background: var(--is-stage); }
.is-liquify-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; padding: 8px 10px; background: var(--is-float); border-bottom: 1px solid var(--is-line); }
.is-liquify-tools { display: flex; flex-wrap: wrap; gap: 4px; }
.is-liquify-tools .is-btn { min-height: 28px; padding: 0 9px; }
.is-liquify-head .is-btn.on { background: var(--is-accent); color: #fff; }
.is-liquify-face { position: absolute; top: 58px; right: 10px; bottom: 10px; width: min(300px, calc(100% - 20px)); overflow: auto; display: grid; align-content: start; gap: 6px;
  padding: 10px 12px; background: var(--is-float); border: 1px solid var(--is-line); border-radius: 10px; box-shadow: 0 10px 30px rgba(0, 0, 0, .35); z-index: 2; }
.is-liquify-face[hidden] { display: none; }
.is-liquify-face h4 { margin: 8px 0 0; font-size: 12px; text-transform: uppercase; letter-spacing: .06em; opacity: .7; }
.is-face-slider { display: grid; grid-template-columns: 1fr 110px 34px; align-items: center; gap: 6px; font-size: 13px; }
.is-face-slider output { text-align: right; font-variant-numeric: tabular-nums; opacity: .8; }
.is-liquify-view { place-self: center; max-width: calc(100% - 24px); max-height: calc(100% - 24px); touch-action: none; cursor: crosshair; box-shadow: 0 10px 30px rgba(0, 0, 0, .35);
  background-image: conic-gradient(#d9d9de 25%, #fff 0 50%, #d9d9de 0 75%, #fff 0); background-size: 16px 16px; }

/* ---------- dialogs */
.is-dialog { border: 1px solid var(--is-line); border-radius: 14px; padding: 0; background: var(--is-float); color: var(--is-text); width: min(460px, calc(100vw - 32px)); max-height: calc(100dvh - 40px); }
.is-dialog::backdrop { background: rgba(0, 0, 0, .35); }
.is-form { display: grid; gap: 12px; padding: 18px; }
.is-form h2 { margin: 0; font-size: 1.1rem; }
.is-dialog-text { margin: 0; color: var(--is-muted); font-size: .88rem; line-height: 1.5; white-space: pre-line; }
.is-field { display: grid; gap: 5px; font-size: .86rem; }
.is-field > label { color: var(--is-muted); }
.is-field input:not([type=range]):not([type=checkbox]), .is-field select, .is-field textarea { background: var(--is-raise); color: var(--is-text); border: 1px solid var(--is-line); border-radius: 8px; padding: 7px 9px; font: inherit; font-size: .9rem; }
.is-field input[type=color] { padding: 2px; height: 34px; width: 64px; }
.is-field-range { grid-template-columns: 1fr 70px; align-items: center; }
.is-field-range > label { grid-column: 1 / -1; }
.is-field-range input[type=range] { accent-color: var(--is-accent); }
.is-field-range input[type=number] { width: 70px; box-sizing: border-box; }
.is-field-check { display: flex; align-items: center; gap: 8px; flex-direction: row-reverse; justify-content: flex-end; }
.is-field-check input[type=checkbox] { width: 18px; height: 18px; flex: 0 0 auto; margin: 0; padding: 0; accent-color: var(--is-accent); }
.is-field-check > label { color: var(--is-text); }
.is-preview-toggle { display: flex; align-items: center; gap: 8px; font-size: .86rem; }
.is-dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 4px; }
.is-histogram canvas, .is-curve { width: 100%; height: auto; border-radius: 6px; background: #16181d; }
.is-curve { aspect-ratio: 1; touch-action: none; cursor: crosshair; }
.is-curve-wrap { display: grid; gap: 4px; }
.is-anchor { display: grid; grid-template-columns: repeat(3, 26px); gap: 4px; }
.is-anchor button { width: 26px; height: 26px; border-radius: 5px; border: 1px solid var(--is-line); background: var(--is-raise); cursor: pointer; }
.is-anchor button[aria-checked="true"] { background: var(--is-accent); }

/* ---------- batch */
.is-batch-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: 16px; align-items: start; }
.is-batch .is-panel { border: 1px solid var(--is-line); border-radius: 14px; background: var(--is-panel); padding: 16px; gap: 12px; }
.is-batch-drop { display: grid; gap: 4px; place-items: center; text-align: center; padding: 26px 14px; border: 2px dashed var(--is-line); border-radius: 12px; cursor: pointer; color: var(--is-muted); font-size: .88rem; }
.is-batch-drop strong { color: var(--is-text); font-size: 1rem; }
.is-batch-drop.over, .is-batch-drop:hover, .is-batch-drop:focus-visible { border-color: var(--is-accent); outline: none; }
.is-batch-files { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); gap: 8px; max-height: 420px; overflow-y: auto; }
.is-batch-files li { position: relative; display: grid; gap: 3px; font-size: .74rem; color: var(--is-muted); }
.is-batch-files img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 8px; background: var(--is-stage); }
.is-batch-files span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.is-batch-files button { position: absolute; top: 4px; right: 4px; width: 22px; height: 22px; border-radius: 11px; border: 0; background: rgba(0, 0, 0, .6); color: #fff; cursor: pointer; }
.is-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.is-step { border: 1px solid var(--is-line); border-radius: 10px; padding: 10px; display: grid; gap: 8px; background: var(--is-raise); }
.is-step-ai { border-color: color-mix(in srgb, var(--is-accent) 45%, var(--is-line)); }
.is-step-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; font-size: .9rem; }
.is-step-head button { width: 26px; height: 26px; border: 0; border-radius: 6px; background: none; color: var(--is-muted); cursor: pointer; }
.is-step-head button:hover { background: var(--is-panel); color: var(--is-text); }
.is-step-fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 8px; }
.is-step-fields label { display: grid; gap: 4px; font-size: .8rem; color: var(--is-muted); }
.is-step-fields label:has(textarea) { grid-column: 1 / -1; }
.is-step-fields input, .is-step-fields select, .is-step-fields textarea, .is-form-grid input, .is-form-grid select, .is-batch .is-row select { background: var(--is-panel); color: var(--is-text); border: 1px solid var(--is-line); border-radius: 7px; padding: 6px 8px; font: inherit; font-size: .86rem; }
.is-step-fields input[type=range] { accent-color: var(--is-accent); padding: 0; }
.is-step-range output { font-size: .78rem; }
.is-form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 10px; }
.is-form-grid label { display: grid; gap: 4px; font-size: .8rem; color: var(--is-muted); }
.is-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.is-batch-start { display: grid; gap: 10px; padding: 12px; border-radius: 10px; background: color-mix(in srgb, var(--is-accent) 8%, transparent); }
.is-batch-start p { margin: 0; font-size: .86rem; }
.is-batch-history { display: grid; gap: 6px; }
.is-batch-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 16px; padding: 10px 14px; border: 1px solid var(--is-line); border-radius: 10px; background: var(--is-panel); color: var(--is-text); font: inherit; text-align: left; cursor: pointer; }
.is-batch-row span { color: var(--is-muted); font-size: .84rem; }
.is-progress { height: 8px; border-radius: 4px; background: var(--is-raise); overflow: hidden; }
.is-progress div { height: 100%; background: var(--is-accent); transition: width .4s ease; }
.is-results { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; }
.is-result { display: grid; gap: 6px; padding: 8px; border-radius: 12px; border: 1px solid var(--is-line); background: var(--is-panel); font-size: .82rem; align-content: start; }
.is-result img, .is-result-ph { width: 100%; aspect-ratio: 4 / 3; object-fit: contain; border-radius: 8px; background: var(--is-stage); }
.is-result-ph { display: grid; place-items: center; color: var(--is-muted); }
.is-result strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.is-result-msg { color: var(--is-muted); }
.is-result.is-failed, .is-result.is-blocked { border-color: color-mix(in srgb, var(--is-danger) 50%, var(--is-line)); }
.is-result .is-btn { min-height: 28px; padding: 0 8px; font-size: .78rem; }

/* ---------- small screens: tools at the bottom, panels as a drawer */
@media (max-width: 900px) {
  .is-app { height: calc(100dvh - var(--tarvi-head, 120px) - 24px); grid-template-rows: auto auto 1fr auto auto; }
  .is-main { grid-template-columns: minmax(0, 1fr); grid-template-rows: minmax(0, 1fr); }
  .is-tools { position: static; grid-row: 2; display: flex; flex-direction: row; align-items: center; overflow-x: auto; padding: 4px 6px; border-right: 0; border-top: 1px solid var(--is-line); order: 3; scrollbar-width: none; }
  .is-app > .is-main { display: flex; flex-direction: column; }
  .is-stage { flex: 1; }
  .is-swatches { margin: 0 0 0 auto; padding: 0 0 0 8px; display: flex; }
  .is-panels { position: absolute; right: 0; top: 96px; bottom: 30px; width: min(320px, 88vw); z-index: 5; transform: translateX(105%); transition: transform .22s cubic-bezier(.2, .8, .2, 1); box-shadow: -10px 0 30px rgba(0, 0, 0, .3); }
  .is-show-panels .is-panels { transform: none; }
  .is-panel-toggle { display: inline-flex; }
  .is-menubar-actions .is-btn:not(.is-icon):not(.is-primary) { display: none; }
  .is-doc-title { display: none; }
  .is-batch-grid { grid-template-columns: minmax(0, 1fr); }
  .is-app { position: relative; }
}
@media (max-width: 520px) {
  .is-menu-btn { padding: 6px 7px; }
  .is-opt input[type=range] { width: 80px; }
}

/* ---------- layer colour labels, lock row */
.is-layer.labelled { box-shadow: inset 3px 0 0 var(--label, transparent); }
.is-layer[data-label="red"] { --label: #e5484d; } .is-layer[data-label="orange"] { --label: #f76b15; } .is-layer[data-label="yellow"] { --label: #ffc53d; }
.is-layer[data-label="green"] { --label: #30a46c; } .is-layer[data-label="blue"] { --label: #3e63dd; } .is-layer[data-label="violet"] { --label: #8e4ec6; } .is-layer[data-label="gray"] { --label: #8b8d98; }
.is-lock-row { align-items: center; gap: 6px; }
.is-lock-row select { background: var(--is-raise); color: var(--is-text); border: 1px solid var(--is-line); border-radius: 7px; padding: 3px 6px; font: inherit; font-size: .8rem; margin-left: auto; }
.is-btn.is-mini { min-height: 26px; padding: 0 8px; }
/* colour panel sliders: thin gradient tracks with a small thumb (not the app-wide range style) */
#workspace #image-studio-view .is-color-row { min-height: 0; }
#workspace #image-studio-view .is-color-row input[type=range] { -webkit-appearance: none; appearance: none; height: 12px; margin: 4px 0; padding: 0; border-radius: 6px; border: 1px solid var(--is-line); background-size: 100% 100% !important; box-shadow: none; }
#workspace #image-studio-view .is-color-row input[type=range]::-webkit-slider-runnable-track { height: 12px; background: transparent; border: 0; box-shadow: none; }
#workspace #image-studio-view .is-color-row input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 14px; height: 14px; margin-top: -1px; border-radius: 50%; background: #fff; border: 2px solid #111; box-shadow: none; }
#workspace #image-studio-view .is-color-row input[type=range]::-moz-range-thumb { width: 12px; height: 12px; border-radius: 50%; background: #fff; border: 2px solid #111; box-shadow: none; }
#workspace #image-studio-view .is-color-row input[type=range]::-moz-range-track { background: transparent; }

/* ---------- nested smart object editing, channel buttons, custom kernel */
.is-nested-bar { position: absolute; top: 46px; left: 50%; transform: translateX(-50%); z-index: 30; display: flex; align-items: center; gap: 10px; padding: 6px 10px; border-radius: 10px; background: var(--is-float); border: 1px solid var(--is-accent); box-shadow: 0 10px 30px rgba(0, 0, 0, .35); max-width: calc(100% - 24px); flex-wrap: wrap; }
.is-channel-seg { flex-wrap: wrap; }
.is-kernel { display: grid; grid-template-columns: repeat(5, 1fr); gap: 4px; grid-column: 1 / -1; }
.is-kernel input { width: 100%; box-sizing: border-box; background: var(--is-raise); color: var(--is-text); border: 1px solid var(--is-line); border-radius: 6px; padding: 5px; font: inherit; text-align: center; }

/* ---------- styles panel, layer filter, notes and measurement log */
.is-style-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(76px, 1fr)); gap: 6px; }
.is-style-tile { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 6px 4px; border: 1px solid var(--is-line); border-radius: 8px; background: var(--is-raise); color: var(--is-text); font: inherit; font-size: 11px; cursor: pointer; text-align: center; }
.is-style-tile:hover, .is-style-tile:focus-visible { border-color: var(--is-accent); }
.is-style-swatch { width: 34px; height: 22px; border-radius: 5px; }
.is-layer-filter { display: flex; gap: 6px; padding: 0 0 6px; }
.is-layer-filter input { flex: 1; min-width: 0; }
.is-layer-filter input, .is-layer-filter select { background: var(--is-raise); color: var(--is-text); border: 1px solid var(--is-line); border-radius: 6px; padding: 4px 6px; font: inherit; font-size: 12px; }
.is-sub { margin: 8px 0 4px; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--is-muted, inherit); }
.is-note-list { display: flex; flex-direction: column; gap: 4px; }
.is-note-row { display: flex; gap: 6px; align-items: baseline; text-align: left; padding: 5px 6px; border-radius: 6px; border: 1px solid var(--is-line); background: #facc1514; color: var(--is-text); font: inherit; font-size: 12px; cursor: pointer; }
.is-note-row em { margin-left: auto; opacity: .7; }
.is-measure { width: 100%; border-collapse: collapse; font-size: 11px; font-variant-numeric: tabular-nums; }
.is-measure th, .is-measure td { padding: 3px 4px; border-bottom: 1px solid var(--is-line); text-align: left; }
.is-glyph-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(30px, 1fr)); gap: 3px; }
.is-glyph { height: 30px; border: 1px solid var(--is-line); border-radius: 6px; background: var(--is-raise); color: var(--is-text); font-size: 16px; cursor: pointer; }
.is-glyph:hover, .is-glyph:focus-visible { border-color: var(--is-accent); }
.is-doc-tabs { display: flex; gap: 2px; padding: 0 8px; overflow-x: auto; background: var(--is-panel, var(--is-raise)); border-bottom: 1px solid var(--is-line); scrollbar-width: none; }
.is-doc-tabs[hidden] { display: none; }
.is-doc-tab { display: flex; align-items: center; border: 1px solid transparent; border-bottom: none; border-radius: 8px 8px 0 0; max-width: 220px; flex-shrink: 0; }
.is-doc-tab.on { background: var(--is-raise); border-color: var(--is-line); }
.is-doc-tab-name { background: none; border: none; color: var(--is-text); font: inherit; font-size: 12px; padding: 6px 4px 6px 10px; cursor: pointer; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.is-doc-tab:not(.on) .is-doc-tab-name { color: var(--is-muted); }
.is-doc-tab-close { background: none; border: none; color: var(--is-muted); font-size: 15px; padding: 2px 8px; cursor: pointer; border-radius: 6px; }
.is-doc-tab-close:hover, .is-doc-tab-close:focus-visible { color: var(--is-text); background: var(--is-line); }
.is-prop-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-bottom: 6px; }
.is-prop-field { display: flex; align-items: center; gap: 6px; font-size: 12px; }
.is-prop-field span { min-width: 18px; color: var(--is-muted); }
.is-prop-field input[type=number] { width: 100%; min-width: 0; background: var(--is-raise); color: var(--is-text); border: 1px solid var(--is-line); border-radius: 6px; padding: 4px 6px; font: inherit; font-variant-numeric: tabular-nums; }
.is-prop-check { gap: 4px; }
.is-taskbar { position: absolute; z-index: 12; display: flex; gap: 4px; align-items: center; padding: 4px; border-radius: 12px; background: var(--is-float, rgba(24,24,28,.92)); border: 1px solid var(--is-line); box-shadow: 0 10px 28px rgba(0,0,0,.35); max-width: calc(100% - 16px); overflow-x: auto; scrollbar-width: none; }
.is-taskbar[hidden] { display: none; }
.is-taskbar .is-btn { white-space: nowrap; }
/* the tab bar is an extra grid row between menu bar and options bar */
.is-app:has(> .is-doc-tabs:not([hidden])) { grid-template-rows: auto auto auto minmax(0, 1fr) auto; }
@media (max-width: 900px) { .is-app:has(> .is-doc-tabs:not([hidden])) { grid-template-rows: auto auto auto 1fr auto auto; } }
/* seventh round: export preview, Camera Raw colour mixer and masks */
.is-export-preview { display: grid; gap: 6px; }
.is-export-view { height: min(320px, 42vh); overflow: auto; border-radius: 8px; border: 1px solid var(--is-line); background: repeating-conic-gradient(#8883 0 25%, transparent 0 50%) 0 0 / 16px 16px; }
.is-export-img { display: block; max-width: none; image-rendering: auto; }
.is-export-info { font-size: 12px; color: var(--is-muted); font-variant-numeric: tabular-nums; }
.is-export-preview .is-row { justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
.is-dev-block { display: grid; gap: 6px; }
.is-hsl-sliders { display: grid; gap: 2px; }
.is-swatch-dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 6px; vertical-align: -1px; }
.is-dev-masks { display: grid; gap: 8px; }
.is-dev-mask { display: grid; gap: 2px; margin: 0; padding: 8px 10px; border: 1px solid var(--is-line); border-radius: 8px; }
.is-dev-mask legend { padding: 0 4px; font-size: 12px; font-weight: 600; }
.is-dev-mask h4 { margin: 6px 0 2px; font-size: 11px; text-transform: uppercase; letter-spacing: .06em; opacity: .7; }

/* ---------- picture from an Office document: one calm bar to send it back */
.is-office-link { position: fixed; left: 50%; bottom: max(18px, env(safe-area-inset-bottom)); transform: translateX(-50%); z-index: 1250;
  display: flex; align-items: center; gap: 10px; padding: 8px 8px 8px 16px; border-radius: 999px; max-width: calc(100vw - 32px);
  background: var(--is-float); border: 1px solid color-mix(in srgb, var(--is-accent) 45%, var(--is-line));
  box-shadow: 0 12px 32px rgba(0, 0, 0, .35); animation: is-office-in .24s cubic-bezier(.2, .8, .2, 1); }
.is-office-link-text { font-size: 13px; color: var(--is-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.is-office-link .is-btn { flex: none; border-radius: 999px; }
@keyframes is-office-in { from { opacity: 0; transform: translate(-50%, 10px); } }
@media (max-width: 640px) { .is-office-link { flex-wrap: wrap; justify-content: center; border-radius: 18px; padding: 10px; }
  .is-office-link-text { flex-basis: 100%; text-align: center; } }
@media (prefers-reduced-motion: reduce) { .is-office-link { animation: none; } }