/* ================= buttons ================= */
button {
  font: 400 var(--fs-sm)/1.4 var(--font-ui);
  color: var(--text-1);
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  border-radius: var(--r-sm);
  padding: 4px 10px;
  cursor: pointer;
  transition: background 0.1s var(--ease), border-color 0.1s var(--ease), color 0.1s var(--ease);
  white-space: nowrap;
}
button:hover { background: var(--bg-3); border-color: var(--border-3); }
button:focus-visible { outline: 1px solid var(--accent); outline-offset: 1px; }
button:disabled { opacity: 0.4; cursor: default; }

button.primary {
  background: var(--accent-dim);
  border-color: var(--accent-border);
  color: var(--accent);
  font-weight: 500;
}
button.primary:hover { background: rgba(91, 149, 245, 0.18); border-color: var(--accent); }
.wide, button.wide { flex: 1; }

button.tool-active {
  background: var(--accent-dim);
  border-color: var(--accent-border);
  color: var(--accent);
}

/* icon-only button */
.ib {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 0;
  border-radius: var(--r-sm);
  color: var(--text-2);
  cursor: pointer;
  padding: 0;
}
.ib:hover { background: var(--bg-3); color: var(--text-1); }
.ib.danger:hover { background: rgba(229, 83, 75, 0.1); color: var(--danger); }

/* toolstrip tool button */
.tool-b {
  width: 32px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 0;
  border-radius: var(--r-sm);
  color: var(--text-2);
  cursor: pointer;
  padding: 0;
}
.tool-b:hover { background: var(--bg-3); color: var(--text-1); }
.tool-b.on {
  background: var(--accent-dim);
  color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent-border);
}
.tstrip-sep { width: 1px; height: 16px; background: var(--border-2); margin: 6px 3px; }

/* ================= menus ================= */
.menu-root { position: relative; }
.menu-btn {
  background: none;
  border: 0;
  color: var(--text-2);
  font: 400 var(--fs-sm)/1.3 var(--font-ui);
  padding: 5px 9px;
  border-radius: var(--r-sm);
  cursor: pointer;
}
.menu-btn:hover, .menu-root.open .menu-btn { background: var(--bg-3); color: var(--text-1); }

.menu-pop {
  position: absolute;
  top: 34px;
  left: 0;
  min-width: 236px;
  background: var(--bg-1);
  border: 1px solid var(--border-2);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-pop);
  padding: 4px;
  display: none;
  z-index: 50;
}
.menu-root.open .menu-pop { display: block; }

.mi {
  display: flex;
  align-items: center;
  gap: 9px;
  width: 100%;
  padding: 5px 9px;
  border: 0;
  background: none;
  color: var(--text-1);
  font: 400 var(--fs-sm)/1.5 var(--font-ui);
  text-align: left;
  border-radius: var(--r-sm);
  cursor: pointer;
}
.mi:hover:not(:disabled) { background: var(--bg-3); color: var(--text-1); }
.mi:disabled { color: var(--text-3); cursor: default; }
.mi .kbd {
  margin-left: auto;
  color: var(--text-3);
  font: 500 var(--fs-xs)/1 var(--font-mono);
  background: none;
  border: 0;
  padding: 0;
}
.msep { height: 1px; background: var(--border); margin: 4px 5px; }

/* ================= form rows ================= */
.frow { display: flex; align-items: center; gap: 7px; margin-top: 7px; }
.frow > label:first-child {
  color: var(--text-3);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  min-width: 58px;
}
.chkline {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-sm);
  color: var(--text-2);
  cursor: pointer;
}
.num { width: 60px; }

.cornergrid {
  display: grid;
  grid-template-columns: 26px 1fr 1fr;
  gap: 4px;
  margin-top: 8px;
  align-items: center;
}
.cornergrid .cl { color: var(--text-3); font: 500 var(--fs-xs)/1 var(--font-mono); }
.cornergrid input { width: 100%; min-width: 0; }

.vp-chip {
  display: inline-block;
  padding: 1px 7px;
  border-radius: var(--r-sm);
  font: 500 var(--fs-xs)/1.6 var(--font-mono);
  margin: 2px 4px 0 0;
}
.vp-chip.v1 { color: var(--vp1); background: rgba(255, 159, 67, 0.07); border: 1px solid rgba(255, 159, 67, 0.28); }
.vp-chip.v2 { color: var(--vp2); background: rgba(53, 208, 224, 0.06); border: 1px solid rgba(53, 208, 224, 0.28); }

/* ================= layer list ================= */
#layerList { flex: 1; overflow-y: auto; padding: 2px 7px 12px; }

.lrow {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 7px;
  border-radius: var(--r-sm);
  cursor: default;
  border: 1px solid transparent;
  color: var(--text-1);
  font-size: var(--fs-sm);
}
.lrow:hover { background: var(--bg-2); }
.lrow.active { background: var(--accent-dim); border-color: var(--accent-border); }
.lrow.dragover { border-top: 2px solid var(--accent); }
.lrow .licon { color: var(--text-3); width: 14px; }
.lrow .lthumb {
  width: 28px;
  height: 20px;
  flex: none;
  border-radius: var(--r-sm);
  border: 1px solid var(--border-2);
  background-color: var(--bg-0);
  background-size: cover;
  background-position: center;
}
.lrow .lthumb.grid-thumb {
  background-color: #0d1c22;
  background-image:
    repeating-linear-gradient(0deg, rgba(53, 208, 224, 0.3) 0 1px, transparent 1px 7px),
    repeating-linear-gradient(90deg, rgba(53, 208, 224, 0.3) 0 1px, transparent 1px 9px);
}
.lrow .lname {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.lrow .lname input {
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--accent);
  border-radius: var(--r-sm);
  color: var(--text-1);
  font: inherit;
  padding: 0 4px;
  outline: 0;
}
.lrow.hidden-l .lname, .lrow.hidden-l .lthumb, .lrow.hidden-l .licon { opacity: 0.38; }
.lrow .rb { visibility: hidden; }
.lrow:hover .rb, .lrow .rb.pin { visibility: visible; }
#layerEmpty { color: var(--text-3); padding: 12px; font: 400 var(--fs-sm)/1.6 var(--font-text); }

/* ================= modal ================= */
#modalWrap {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.66);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
}
#modalWrap.show { display: flex; }

#modal {
  width: 580px;
  max-height: 72vh;
  background: var(--bg-1);
  border: 1px solid var(--border-2);
  border-radius: var(--r-lg);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-modal);
}
#modal header {
  display: flex;
  align-items: center;
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
  font: 600 var(--fs-sm)/1.3 var(--font-ui);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-2);
}
#modal header .ib { margin-left: auto; }
#modal footer {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  border-top: 1px solid var(--border);
}

#docList { flex: 1; overflow-y: auto; padding: 8px; }
.drow {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 8px 10px;
  border-radius: var(--r-md);
  cursor: pointer;
  border: 1px solid transparent;
}
.drow:hover { background: var(--bg-2); border-color: var(--border-2); }
.drow .dthumb {
  width: 64px;
  height: 42px;
  flex: none;
  border-radius: var(--r-sm);
  border: 1px solid var(--border-2);
  background-color: var(--bg-0);
  background-size: cover;
  background-position: center;
}
.drow .dmeta { flex: 1; min-width: 0; }
.drow .dname {
  font-weight: 500;
  font-size: var(--fs-md);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.drow .ddate { color: var(--text-3); font: 400 var(--fs-xs)/1.5 var(--font-mono); margin-top: 2px; }
#docListEmpty { color: var(--text-3); padding: 28px; text-align: center; font-family: var(--font-text); }

/* ================= toast ================= */
#toast {
  position: absolute;
  left: 50%;
  bottom: 40px;
  transform: translateX(-50%);
  background: var(--bg-1);
  border: 1px solid var(--border-2);
  color: var(--text-1);
  padding: 6px 14px;
  border-radius: var(--r-md);
  font: 400 var(--fs-sm)/1.4 var(--font-mono);
  opacity: 0;
  transition: opacity 0.15s var(--ease);
  pointer-events: none;
  white-space: nowrap;
  z-index: 60;
  box-shadow: var(--shadow-pop);
}
#toast.show { opacity: 1; }

/* ================= renderer stack list ================= */
.rlist-row { align-items: stretch; }
.rlist {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.rlist-btns {
  display: flex;
  flex-direction: column;
  gap: 2px;
  justify-content: flex-start;
}
.rrow {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 3px 6px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  cursor: pointer;
  font: 400 var(--fs-sm)/1.4 var(--font-mono);
  color: var(--text-2);
}
.rrow:hover { background: var(--bg-3); }
.rrow.sel {
  background: var(--bg-3);
  border-color: var(--border-2);
  color: var(--text-1);
}
.rrow.off .rname, .rrow.off .rswatch { opacity: 0.35; }
.rrow .rname {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.rrow .rswatch {
  width: 14px;
  height: 8px;
  border-radius: 2px;
  flex: none;
  border: 1px solid rgba(255, 255, 255, 0.15);
}
.rrow .ib.mini { width: 18px; height: 18px; padding: 1px; flex: none; }
.rrow .ib.mini .i { width: 12px; height: 12px; }

.hint.mono { font-family: var(--font-mono); font-size: var(--fs-xs); letter-spacing: 0.02em; }

/* ================= AI handoff ================= */
#aiWrap {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.66);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
}
#aiWrap.show { display: flex; }
#aiModal {
  width: 720px;
  max-height: 84vh;
  background: var(--bg-1);
  border: 1px solid var(--border-2);
  border-radius: var(--r-lg);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-modal);
}
#aiModal header {
  display: flex;
  align-items: center;
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
  font: 600 var(--fs-sm)/1.3 var(--font-ui);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-2);
}
#aiModal header .ib { margin-left: auto; }
#aiModal footer {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 12px 16px;
  border-top: 1px solid var(--border);
}
#aiBody { padding: 14px 16px; display: flex; flex-direction: column; gap: 10px; overflow-y: auto; }
.ai-slots { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.ai-slot { display: flex; flex-direction: column; gap: 6px; }
.ai-slot button { width: 100%; }
.ai-btns { display: flex; gap: 4px; }
.ai-btns button:first-child { flex: 1; }
.ai-thumb {
  height: 96px;
  border: 1px solid var(--border-2);
  border-radius: var(--r-sm);
  background:
    linear-gradient(45deg, #222428 25%, transparent 25%, transparent 75%, #222428 75%) 0 0 / 12px 12px,
    linear-gradient(45deg, #222428 25%, #2a2c30 25%, #2a2c30 75%, #222428 75%) 6px 6px / 12px 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  color: var(--text-3);
  font: 400 var(--fs-xs)/1 var(--font-mono);
}
.ai-thumb canvas, .ai-thumb img { max-width: 100%; max-height: 100%; display: block; }
#aiPrompt {
  width: 100%;
  height: 260px;
  resize: vertical;
  background: var(--bg-0);
  border: 1px solid var(--border-2);
  border-radius: var(--r-sm);
  color: var(--text-1);
  font: 400 var(--fs-sm)/1.55 var(--font-mono);
  padding: 10px 12px;
  outline: 0;
  user-select: text;
  -webkit-user-select: text;
}
#aiPrompt:focus-visible { border-color: var(--accent); }

.ai-cap {
  font: 500 var(--fs-xs)/1 var(--font-mono);
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.ai-thumb.want {
  border-color: var(--accent-border);
  cursor: pointer;
}

#aiDirection {
  resize: vertical;
  min-height: 44px;
  background: var(--bg-0);
  border: 1px solid var(--border-2);
  border-radius: var(--r-sm);
  color: var(--text-1);
  font: 400 var(--fs-sm)/1.5 var(--font-mono);
  padding: 6px 10px;
  outline: 0;
  user-select: text;
  -webkit-user-select: text;
}
#aiDirection:focus-visible { border-color: var(--accent); }

.ai-locks { flex-wrap: wrap; row-gap: 4px; }
.ai-locks .chkline { font-size: var(--fs-xs); }