/* STEM Keys, built into Universal Scope. Copied from ~/Desktop/CHICKENSCRATCH/content.css - do not edit by hand. */
/* STEM — Advanced Master panel (2026-09-22). Everything is scoped to :is(#stemkeys-am, .am-window)
   so a host page's own styles can't reach in. Previous: content.css.before-advanced-master.bak */

:is(#stemkeys-am, .am-window) {
  --am-surface: #fbfaf7;
  --am-raised: #ffffff;
  --am-ink: #1f1d24;
  --am-muted: #6b6772;
  --am-line: rgba(31, 29, 36, 0.12);
  --am-accent: #3b6ea8;
  --am-accent-text: var(--am-accent);
  position: fixed;
  top: 80px;
  right: 24px;
  width: 400px;
  max-width: calc(100vw - 24px);
  max-height: 82vh;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  background: var(--am-surface);
  color: var(--am-ink);
  border: 1px solid var(--am-line);
  border-radius: 14px;
  box-shadow: 0 16px 40px rgba(20, 16, 24, 0.22);
  font: 14px/1.35 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  z-index: 2147483000;
  overflow: hidden;
  text-align: left;
  letter-spacing: normal;
}
:is(#stemkeys-am, .am-window) *, :is(#stemkeys-am, .am-window) *::before, :is(#stemkeys-am, .am-window) *::after { box-sizing: border-box; }

:is(#stemkeys-am, .am-window) button {
  font: inherit;
  color: inherit;
  margin: 0;
  cursor: pointer;
  text-transform: none;
  line-height: 1.2;
}

/* Header */
:is(#stemkeys-am, .am-window) .am-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 12px;
  background: var(--am-accent);
  color: #fff;
  cursor: grab;
  user-select: none;
}
:is(#stemkeys-am, .am-window) .am-titlewrap { display: flex; align-items: baseline; gap: 8px; }
:is(#stemkeys-am, .am-window) .am-title { font-weight: 800; font-size: 16px; letter-spacing: 0.04em; }
:is(#stemkeys-am, .am-window) .am-subtitle { font-size: 12px; opacity: 0.9; }
:is(#stemkeys-am, .am-window) .am-actions { display: flex; gap: 6px; }
:is(#stemkeys-am, .am-window) .am-hbtn {
  width: 26px; height: 26px; padding: 0;
  border: none; border-radius: 7px;
  background: rgba(255, 255, 255, 0.2); color: #fff;
  font-size: 15px;
}
:is(#stemkeys-am, .am-window) .am-hbtn:hover { background: rgba(255, 255, 255, 0.34); }

/* Body */
:is(#stemkeys-am, .am-window) .am-body { overflow-y: auto; padding: 10px 12px 14px; }
:is(#stemkeys-am, .am-window).am-minimized .am-body { display: none; }

/* Collection picker */
:is(#stemkeys-am, .am-window) .am-collections { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
:is(#stemkeys-am, .am-window) .am-col {
  padding: 6px 10px;
  border: 1px solid var(--am-line);
  border-left: 4px solid var(--am-col-accent);
  border-radius: 8px;
  background: var(--am-raised);
  font-size: 12.5px;
  font-weight: 600;
}
:is(#stemkeys-am, .am-window) .am-col:hover { border-color: var(--am-col-accent); }
:is(#stemkeys-am, .am-window) .am-col.am-selected { background: var(--am-col-accent); color: #fff; border-color: var(--am-col-accent); }

/* Tools */
:is(#stemkeys-am, .am-window) .am-tools { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; margin-bottom: 8px; }
:is(#stemkeys-am, .am-window) .am-tool,
:is(#stemkeys-am, .am-window) .am-slot,
:is(#stemkeys-am, .am-window) .am-action {
  padding: 7px 6px;
  border: 1px solid var(--am-line);
  border-radius: 8px;
  background: var(--am-raised);
  font-size: 12.5px;
  font-weight: 600;
  text-align: center;
}
:is(#stemkeys-am, .am-window) .am-tool.am-selected,
:is(#stemkeys-am, .am-window) .am-slot.am-selected { border-color: var(--am-accent); box-shadow: inset 0 0 0 1px var(--am-accent); color: var(--am-accent-text); }
:is(#stemkeys-am, .am-window) .am-toolpanel {
  margin: 0 0 10px;
  padding: 8px;
  border: 1px solid var(--am-line);
  border-radius: 10px;
  background: rgba(127, 127, 127, 0.06);
}
:is(#stemkeys-am, .am-window) .am-slots { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 6px; }
:is(#stemkeys-am, .am-window) .am-slot { flex: 1 1 auto; }
:is(#stemkeys-am, .am-window) .am-digits { display: grid; grid-template-columns: repeat(10, 1fr); gap: 4px; }
:is(#stemkeys-am, .am-window) .am-digit {
  height: 32px; padding: 0;
  border: 1px solid var(--am-line); border-radius: 7px;
  background: var(--am-raised);
  font-size: 16px;
}
:is(#stemkeys-am, .am-window) .am-toolactions { display: grid; grid-template-columns: 1fr 1fr 2fr; gap: 6px; margin-top: 6px; }
:is(#stemkeys-am, .am-window) .am-insert { background: var(--am-accent); color: #fff; border-color: var(--am-accent); }

/* Symbols */
:is(#stemkeys-am, .am-window) .am-group { margin-top: 10px; }
:is(#stemkeys-am, .am-window) .am-heading {
  display: flex; align-items: center; gap: 6px;
  margin-bottom: 6px;
  font-size: 12px; font-weight: 700;
  color: var(--am-accent-text);
  text-transform: uppercase; letter-spacing: 0.05em;
}
:is(#stemkeys-am, .am-window) .am-shared {
  font-size: 10px; font-weight: 600; text-transform: none; letter-spacing: 0;
  padding: 1px 6px; border-radius: 999px;
  border: 1px solid var(--am-line); color: var(--am-muted);
}
:is(#stemkeys-am, .am-window) .am-note { font-size: 12px; color: var(--am-muted); }
:is(#stemkeys-am, .am-window) .am-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(40px, 1fr)); gap: 5px; }
:is(#stemkeys-am, .am-window) .am-sym {
  height: 40px; padding: 0 4px;
  border: 1px solid var(--am-line); border-radius: 8px;
  background: var(--am-raised);
  font-size: 19px;
  font-family: "Cambria Math", "STIX Two Math", "Apple Symbols", "Segoe UI Symbol", "Noto Sans Math", serif;
  white-space: nowrap;
}
:is(#stemkeys-am, .am-window) .am-sym-wide { grid-column: span 2; font-size: 16px; }
:is(#stemkeys-am, .am-window) .am-sym:hover,
:is(#stemkeys-am, .am-window) .am-digit:hover,
:is(#stemkeys-am, .am-window) .am-tool:hover,
:is(#stemkeys-am, .am-window) .am-slot:hover,
:is(#stemkeys-am, .am-window) .am-action:hover { border-color: var(--am-accent); }
:is(#stemkeys-am, .am-window) .am-sym:active,
:is(#stemkeys-am, .am-window) .am-digit:active { transform: translateY(1px); }

/* Dark */
:is(#stemkeys-am, .am-window).am-dark {
  --am-surface: #1d1c22;
  --am-raised: #28272e;
  --am-ink: #ece9e2;
  --am-muted: #a39fa9;
  --am-line: rgba(236, 233, 226, 0.14);
  /* colored lettering is lightened in dark mode so it stays readable */
  --am-accent-text: color-mix(in srgb, var(--am-accent) 45%, #ffffff);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
}

/* High contrast (low vision) */
:is(#stemkeys-am, .am-window).am-hc {
  --am-surface: #000;
  --am-raised: #000;
  --am-ink: #fff;
  --am-muted: #fff;
  --am-line: #fff;
  --am-accent: #ffd400 !important;
  --am-accent-text: #ffd400 !important;
  border: 2px solid #fff;
}
:is(#stemkeys-am, .am-window).am-hc .am-header { background: #000; color: #ffd400; border-bottom: 2px solid #fff; }
:is(#stemkeys-am, .am-window).am-hc .am-hbtn { background: #000; color: #ffd400; border: 1px solid #ffd400; }
:is(#stemkeys-am, .am-window).am-hc .am-col { --am-col-accent: #ffd400 !important; }
:is(#stemkeys-am, .am-window).am-hc .am-col.am-selected,
:is(#stemkeys-am, .am-window).am-hc .am-insert { color: #000; }

/* ---- 7 collection windows + master control center (Change 2) ---- */
:is(#stemkeys-am, .am-window) .am-label {
  margin: 2px 0 6px;
  font-size: 11px; font-weight: 700;
  color: var(--am-muted);
  text-transform: uppercase; letter-spacing: 0.06em;
}
#stemkeys-am#stemkeys-am { width: 380px; }
#stemkeys-am .am-tools { margin-bottom: 8px; }
:is(#stemkeys-am, .am-window).am-window { width: 390px; max-height: 72vh; }
:is(#stemkeys-am, .am-window).am-window .am-header { padding: 9px 12px; }
:is(#stemkeys-am, .am-window).am-window .am-wtitle { font-weight: 800; font-size: 14px; letter-spacing: 0.02em; }
:is(#stemkeys-am, .am-window).am-window .am-body { padding-top: 2px; }

/* Power / Sub header icons in the subject windows (2026-09-23): lit up while on */
:is(#stemkeys-am, .am-window) .am-hbtn.am-modebtn.am-selected { background: #fff; color: var(--am-accent); font-weight: 700; }
:is(#stemkeys-am, .am-window).am-hc .am-hbtn.am-modebtn.am-selected { background: #ffd400; color: #000; }
/* Numerator / Denominator header icons (2026-09-23): slightly wider so the fraction glyph fits */
:is(#stemkeys-am, .am-window) .am-hbtn.am-modebtn { min-width: 26px; width: auto; padding: 0 4px; }

/* My Keys favorites rows (2026-09-23): up to 10, two rows of 5, in every subject window */
:is(#stemkeys-am, .am-window) .am-fav { border: 1px dashed var(--am-line); border-radius: 10px; padding: 6px; }
:is(#stemkeys-am, .am-window) .am-fav-grid { grid-template-columns: repeat(5, 1fr); }
:is(#stemkeys-am, .am-window) .am-fav-hint { font-size: 12px; opacity: 0.7; text-align: center; padding: 8px 4px; }
:is(#stemkeys-am, .am-window) .am-fav-cell { position: relative; }
:is(#stemkeys-am, .am-window) .am-fav-cell .am-sym { width: 100%; }
:is(#stemkeys-am, .am-window) .am-fav-x {
  position: absolute; top: -6px; right: -6px; width: 18px; height: 18px; padding: 0;
  border: none; border-radius: 50%; background: #c0392b; color: #fff; font-size: 12px; line-height: 18px;
  display: none; cursor: pointer;
}
:is(#stemkeys-am, .am-window) .am-fav-cell:hover .am-fav-x { display: block; }
:is(#stemkeys-am, .am-window) .am-fav.am-fav-target { border: 2px solid var(--am-accent); }
@keyframes am-fav-flash { 0%, 100% { box-shadow: none; } 50% { box-shadow: 0 0 0 3px #e0a800; } }
:is(#stemkeys-am, .am-window) .am-fav-flash { animation: am-fav-flash 0.6s ease 2; }
:is(#stemkeys-am, .am-window) .am-all-hint { padding: 2px 6px 8px; }
/* Empty My Keys box hidden unless picking favorites (All Symbols open) or dragging (2026-09-23) */
html:not(.am-fav-picking):not(.am-fav-dragging) .am-window .am-fav.am-fav-empty { display: none; }

/* Number row stays in place while the symbols scroll (2026-09-23) */
:is(#stemkeys-am, .am-window) .am-numbers {
  position: sticky; top: -2px; z-index: 2;
  background: var(--am-surface); margin-top: 0; padding: 8px 0 8px;
}
/* Arrange mode (2026-09-23): symbols show they can be moved */
:is(#stemkeys-am, .am-window).am-arranging .am-symgrid .am-sym { cursor: move; border-style: dashed; border-color: var(--am-accent); }
/* The symbol being arranged shows faintly in its spot while you drag it (2026-09-23) */
:is(#stemkeys-am, .am-window) .am-sym.am-dragsrc { opacity: 0.3; }

.am-wordbtn{width:auto!important;padding:0 .45em!important;font-size:12px!important;white-space:nowrap}