/* ═══════════════════════════════════════════════════════════════
   ITI Design Studio — editor-pro.css
   Two-pane studio design system. Dark by default, light opt-in.
   Tokens → Atmosphere → Layout → Components → Motion.
   ═══════════════════════════════════════════════════════════════ */

/* ─── TOKENS ──────────────────────────────────────────────────── */

:root,
[data-theme="dark"] {
  /* Surfaces */
  --ink:        #0F1216;
  --panel-1:    #161A20;
  --panel-2:    #1B2027;
  --panel-3:    #232932;
  --panel-4:    #2C333D;
  --page:       #FFFFFF;

  /* Hairlines */
  --hair:        rgba(255, 255, 255, 0.07);
  --hair-strong: rgba(255, 255, 255, 0.12);
  --hair-faint:  rgba(255, 255, 255, 0.04);

  /* Text */
  --text-1:      #E8EAED;
  --text-2:      #9BA1A8;
  --text-3:      #5F6770;
  --text-on-accent: #FFFFFF;
  --text-inv:    #0F1216;

  /* Accents */
  --red:         #EE3633;
  --red-deep:    #C1272C;
  --red-soft:    rgba(238, 54, 51, 0.14);
  --red-glow:    rgba(238, 54, 51, 0.45);

  --blue:        #2A93D5;
  --blue-soft:   rgba(42, 147, 213, 0.16);
  --blue-glow:   rgba(42, 147, 213, 0.45);

  --green:       #36B37E;
  --green-soft:  rgba(54, 179, 126, 0.16);
  --amber:       #E0A93C;
  --amber-soft:  rgba(224, 169, 60, 0.16);

  /* State semantic */
  --ok:          #36B37E;
  --warn:        #E0A93C;
  --err:         #F45D5D;

  /* Radii */
  --r-1: 4px;
  --r-2: 6px;
  --r-3: 10px;
  --r-4: 14px;

  /* Spacing scale (4-pt) */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 20px;
  --s-6: 24px;
  --s-7: 32px;
  --s-8: 40px;
  --s-9: 56px;

  /* Typography */
  --f-display: "Bricolage Grotesque", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --f-ui:      "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", system-ui, sans-serif;
  --f-mono:    "IBM Plex Mono", ui-monospace, SFMono-Regular, SF Mono, Menlo, Consolas, monospace;

  /* Type scale (fixed, not fluid — product UI) */
  --t-eyebrow:    10.5px;
  --t-label:      11.5px;
  --t-body:       13px;
  --t-input:      13px;
  --t-title:      15px;
  --t-section:    19px;
  --t-h1:         24px;
  --t-num:        28px;

  /* Weights */
  --w-regular: 400;
  --w-medium:  500;
  --w-semi:    600;
  --w-bold:    700;
  --w-black:   800;

  /* Tracking */
  --tr-tight:   -0.02em;
  --tr-snug:    -0.012em;
  --tr-normal:   0;
  --tr-wide:     0.04em;
  --tr-eyebrow:  0.14em;

  /* Shadows (dark — deep) */
  --sh-low:    0 1px 2px rgba(0,0,0,.32), 0 1px 1px rgba(0,0,0,.18);
  --sh-mid:    0 6px 20px rgba(0,0,0,.42), 0 2px 6px rgba(0,0,0,.24);
  --sh-high:   0 18px 48px rgba(0,0,0,.55), 0 4px 12px rgba(0,0,0,.32);
  --sh-page:   0 40px 100px rgba(0,0,0,.6), 0 14px 30px rgba(0,0,0,.4), 0 4px 8px rgba(0,0,0,.22);
  --sh-glow:   0 0 0 1px var(--hair-strong), 0 14px 40px rgba(0,0,0,.45);
  --sh-focus:  0 0 0 3px var(--blue-soft);

  /* z-index scale */
  --z-base:    0;
  --z-rail:    10;
  --z-bar:     50;
  --z-pulse:   60;
  --z-menu:    70;
  --z-palette: 100;
  --z-toast:   110;
  --z-modal:   120;
  --z-overlay: 130;

  /* Layout */
  --bar-h:    56px;
  --rail-w:   240px;
  --rail-w-c: 64px;
  --ins-w:    360px;
  --editor-w: 420px;
}

[data-theme="light"] {
  --ink:        #F2F3F6;
  --panel-1:    #FFFFFF;
  --panel-2:    #F7F8FA;
  --panel-3:    #ECEFF3;
  --panel-4:    #DDE1E7;
  --page:       #FFFFFF;

  --hair:        rgba(15, 18, 22, 0.08);
  --hair-strong: rgba(15, 18, 22, 0.14);
  --hair-faint:  rgba(15, 18, 22, 0.04);

  --text-1:      #14181D;
  --text-2:      #5A626D;
  --text-3:      #8A929B;
  --text-inv:    #FFFFFF;

  --red-soft:    rgba(193, 39, 44, 0.10);
  --red-glow:    rgba(193, 39, 44, 0.32);
  --blue-soft:   rgba(0, 125, 194, 0.10);
  --blue-glow:   rgba(0, 125, 194, 0.32);
  --green-soft:  rgba(31, 138, 91, 0.10);
  --amber-soft:  rgba(176, 114, 25, 0.10);

  --sh-low:    0 1px 2px rgba(15,18,22,.06), 0 1px 1px rgba(15,18,22,.04);
  --sh-mid:    0 4px 14px rgba(15,18,22,.10), 0 2px 4px rgba(15,18,22,.06);
  --sh-high:   0 12px 32px rgba(15,18,22,.16), 0 4px 10px rgba(15,18,22,.08);
  --sh-page:   0 28px 64px rgba(15,18,22,.16), 0 10px 22px rgba(15,18,22,.10), 0 3px 6px rgba(15,18,22,.06);
  --sh-glow:   0 0 0 1px var(--hair-strong), 0 8px 24px rgba(15,18,22,.10);
  --sh-focus:  0 0 0 3px var(--blue-soft);
}

/* ─── RESET / BASE ────────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html, body { height: 100%; }

html {
  background: var(--ink);
  color: var(--text-1);
  font-family: var(--f-ui);
  font-size: var(--t-body);
  line-height: 1.45;
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  color-scheme: dark light;
  overflow: hidden;
}

[data-theme="light"] { color-scheme: light; }

body {
  height: 100%;
  min-height: 0;
  display: grid;
  grid-template-rows: var(--bar-h) minmax(0, 1fr);
  background: var(--ink);
  overflow: hidden;
  /* Atmosphere layer 1: subtle vignette */
  background-image:
    radial-gradient(ellipse 80% 60% at 50% 35%, rgba(255,255,255,0.025) 0%, transparent 60%),
    radial-gradient(ellipse 100% 80% at 50% 100%, rgba(0,0,0,0.4) 0%, transparent 70%);
  background-attachment: fixed;
}

[data-theme="light"] body {
  background-image:
    radial-gradient(ellipse 80% 60% at 50% 35%, rgba(255,255,255,0.6) 0%, transparent 60%),
    radial-gradient(ellipse 100% 80% at 50% 100%, rgba(15,18,22,0.05) 0%, transparent 70%);
}

button, input, textarea, select {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
}

button { cursor: pointer; user-select: none; }
button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible { outline: none; }

a { color: inherit; text-decoration: none; }

kbd {
  font-family: var(--f-mono);
  font-size: 10.5px;
  font-weight: var(--w-medium);
  background: var(--panel-3);
  color: var(--text-2);
  border: 1px solid var(--hair);
  border-radius: 4px;
  padding: 1px 5px;
  line-height: 1.2;
  letter-spacing: 0.04em;
}

::selection { background: var(--red-soft); color: var(--text-1); }

/* ─── ATMOSPHERE: dot grid + grain ────────────────────────────── */

.canvas-stage {
  position: relative;
  background-color: transparent;
  background-image:
    radial-gradient(circle at 1px 1px, var(--hair) 1px, transparent 1px);
  background-size: 22px 22px;
  background-position: 0 0;
}

.canvas-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 55% 50% at 50% 45%, rgba(238,54,51,0.07) 0%, transparent 60%),
    radial-gradient(ellipse 90% 70% at 50% 50%, transparent 0%, rgba(0,0,0,0.45) 80%);
  pointer-events: none;
  z-index: 0;
}

[data-theme="light"] .canvas-stage::before {
  background:
    radial-gradient(ellipse 55% 50% at 50% 45%, rgba(193,39,44,0.05) 0%, transparent 60%),
    radial-gradient(ellipse 90% 70% at 50% 50%, transparent 0%, rgba(15,18,22,0.08) 80%);
}

/* Subtle grain on chrome panels */
.command-bar::after, .editor-pane::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.35;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 0.04 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  z-index: 0;
}

[data-theme="light"] .command-bar::after, [data-theme="light"] .editor-pane::after {
  opacity: 0.25;
  mix-blend-mode: multiply;
}

/* ─── COMMAND BAR ─────────────────────────────────────────────── */

.command-bar {
  position: relative;
  z-index: var(--z-bar);
  height: var(--bar-h);
  display: grid;
  grid-template-columns: minmax(280px, 1fr) auto minmax(280px, 1fr);
  align-items: center;
  padding: 0 var(--s-4);
  background: rgba(15, 18, 22, 0.72);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom: 1px solid var(--hair);
}

[data-theme="light"] .command-bar {
  background: rgba(255, 255, 255, 0.78);
  border-bottom-color: var(--hair);
}

.cb-left  { display: flex; align-items: center; gap: var(--s-3); min-width: 0; }
.cb-center { display: flex; align-items: center; justify-content: center; }
.cb-right { display: flex; align-items: center; justify-content: flex-end; gap: var(--s-2); }

.brand {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  padding: 6px 8px 6px 0;
  color: var(--text-1);
  position: relative;
  z-index: 1;
  min-width: 0;
}
.brand .iti-logo-wrap {
  display: flex;
  align-items: center;
  background: #fff;
  border-radius: 4px;
  padding: 3px 6px;
  height: 36px;
  box-shadow: 0 1px 2px rgba(0,0,0,.2);
  flex-shrink: 0;
}
.brand .iti-logo-wrap .iti-logo {
  display: block;
  height: 30px;
  width: auto;
}
.brand-words { display: flex; flex-direction: column; line-height: 1; gap: 3px; min-width: 0; }
.brand-name {
  font-family: var(--f-display);
  font-weight: var(--w-black);
  font-size: 17px;
  letter-spacing: var(--tr-tight);
  color: var(--text-1);
}
.brand-sub {
  font-family: var(--f-ui);
  font-size: 9.5px;
  font-weight: var(--w-medium);
  color: var(--text-3);
  letter-spacing: var(--tr-eyebrow);
  text-transform: uppercase;
}

.cb-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  height: 32px;
  padding: 0 var(--s-3);
  border-radius: var(--r-2);
  font-family: var(--f-ui);
  font-size: var(--t-label);
  font-weight: var(--w-semi);
  letter-spacing: 0.02em;
  color: var(--text-1);
  background: transparent;
  border: 1px solid transparent;
  transition: background 120ms ease, color 120ms ease, border-color 120ms ease, transform 120ms ease;
  white-space: nowrap;
  position: relative;
}
.cb-btn:hover { background: var(--panel-2); }
.cb-btn:focus-visible { box-shadow: var(--sh-focus); }
.cb-btn:active { transform: translateY(1px); }
.cb-btn .cb-ico { display: inline-flex; width: 14px; height: 14px; }
.cb-btn .cb-ico svg { width: 14px; height: 14px; }
.cb-btn .cb-chev { display: inline-flex; width: 12px; height: 12px; }

.cb-btn.ghost { border-color: var(--hair); }
.cb-btn.ghost:hover { background: var(--panel-2); border-color: var(--hair-strong); }

.cb-btn.primary {
  background: var(--red);
  color: var(--text-on-accent);
  border-color: var(--red);
  box-shadow: 0 1px 0 rgba(255,255,255,0.10) inset, 0 6px 14px var(--red-glow);
}
.cb-btn.primary:hover { background: var(--red-deep); border-color: var(--red-deep); }
.cb-btn.primary:focus-visible { box-shadow: var(--sh-focus), 0 6px 14px var(--red-glow); }

.cb-btn.caret { padding: 0 8px; border-left: 1px solid rgba(255,255,255,0.18); }

.cb-btn.icon-only { padding: 0 9px; }
.cb-btn.icon-only .cb-ico { width: 16px; height: 16px; }
.cb-btn.icon-only .cb-ico svg { width: 16px; height: 16px; }

.cb-btn.kbd-hint { padding-right: 6px; }
.cb-btn.kbd-hint .cb-kbd { display: inline-flex; align-items: center; gap: 2px; margin-left: 4px; }
.cb-btn.kbd-hint .cb-kbd kbd { font-size: 9.5px; padding: 1px 4px; background: var(--panel-3); border-color: var(--hair); }
.cb-btn.kbd-hint .cb-plus { color: var(--text-3); font-weight: var(--w-medium); font-size: 10px; }

.export-split { position: relative; display: flex; }
.export-split > .cb-btn.primary:first-child { border-top-right-radius: 0; border-bottom-right-radius: 0; }
.export-split > .cb-btn.caret { border-top-left-radius: 0; border-bottom-left-radius: 0; }

.export-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 340px;
  background: var(--panel-2);
  border: 1px solid var(--hair-strong);
  border-radius: var(--r-3);
  box-shadow: var(--sh-high);
  padding: 4px;
  z-index: var(--z-menu);
}
.em-item {
  display: grid;
  grid-template-columns: 16px 1fr auto;
  align-items: center;
  gap: var(--s-3);
  padding: 10px 12px;
  width: 100%;
  text-align: left;
  border-radius: var(--r-2);
  color: var(--text-1);
  transition: background 100ms ease;
}
.em-item:hover, .em-item.focused { background: var(--panel-3); }
.em-item:focus-visible { background: var(--panel-3); box-shadow: var(--sh-focus); }
.em-ico { display: inline-flex; color: var(--text-2); }
.em-ico svg { width: 16px; height: 16px; }
.em-text { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.em-text strong {
  font-family: var(--f-ui);
  font-size: 12.5px;
  font-weight: var(--w-semi);
  color: var(--text-1);
}
.em-text em {
  font-family: var(--f-ui);
  font-size: 11px;
  font-weight: var(--w-regular);
  color: var(--text-2);
  font-style: normal;
}
.em-kbd { display: inline-flex; align-items: center; gap: 2px; color: var(--text-3); }
.em-kbd kbd { font-size: 9.5px; padding: 1px 4px; }
.em-divider { height: 1px; background: var(--hair); margin: 4px 8px; }

/* Save pill — morphs saving→saved with a check draw */
.save-pill {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  height: 32px;
  padding: 0 12px 0 10px;
  border-radius: 999px;
  background: var(--panel-2);
  border: 1px solid var(--hair);
  color: var(--text-2);
  font-family: var(--f-mono);
  font-size: 11px;
  font-weight: var(--w-medium);
  letter-spacing: 0.02em;
  user-select: none;
  cursor: default;
  transition: color 200ms ease, background 200ms ease, border-color 200ms ease;
}
.save-pill .sp-mark {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--green-soft);
  color: var(--green);
  position: relative;
  transition: background 200ms ease, color 200ms ease, transform 200ms cubic-bezier(.4, 1.4, .5, 1);
}
.save-pill .sp-mark svg { width: 10px; height: 10px; }
.save-pill[data-state="saved"] .sp-mark { background: var(--green-soft); color: var(--green); }
.save-pill[data-state="saving"] .sp-mark {
  background: var(--blue-soft);
  color: var(--blue);
  animation: pill-spin 1.1s linear infinite;
}
.save-pill[data-state="saving"] .sp-mark svg { animation: pill-spin 1.1s linear infinite; }
.save-pill[data-state="dirty"] .sp-mark { background: var(--amber-soft); color: var(--amber); }
.save-pill[data-state="saved"]  { color: var(--text-2); }
.save-pill[data-state="saving"] { color: var(--blue); }
.save-pill[data-state="dirty"]  { color: var(--amber); }
.save-pill[data-state="unsaved"]  { color: var(--amber); border-color: var(--amber-soft); }
.save-pill[data-state="unsaved"] .sp-mark { background: var(--amber-soft); color: var(--amber); }
.save-pill[data-state="editing"]  { color: var(--amber); border-color: var(--amber-soft); }
.save-pill[data-state="editing"] .sp-mark { background: var(--amber-soft); color: var(--amber); }
.save-pill.is-pulse { animation: pill-pulse 600ms cubic-bezier(.4, 1.4, .5, 1); }

@keyframes pill-spin { to { transform: rotate(360deg); } }
@keyframes pill-pulse {
  0%   { transform: scale(1); }
  35%  { transform: scale(1.06); }
  100% { transform: scale(1); }
}

/* ─── STUDIO 2-PANE (editor + resizer + canvas) ───────────────── */

.studio {
  display: grid;
  grid-template-columns: var(--editor-w) 6px 1fr;
  height: 100%;
  min-height: 0;
  overflow: hidden;
  position: relative;
}

/* ─── EDITOR PANE (left side) ─────────────────────────────────── */

.editor-pane {
  position: relative;
  z-index: var(--z-rail);
  background: var(--panel-1);
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  border-right: 1px solid var(--hair);
}

/* ─── TILE GRID (section thumbnails at top of editor pane) ─────── */

.tile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(108px, 1fr));
  gap: 6px;
  padding: var(--s-3);
  border-bottom: 1px solid var(--hair);
  background: var(--panel-1);
  flex-shrink: 0;
}

/* ─── RESIZER ─────────────────────────────────────────────────── */

.resizer {
  background: transparent;
  cursor: col-resize;
  position: relative;
  transition: background 150ms ease;
}
.resizer::before {
  content: '';
  position: absolute;
  top: 0; bottom: 0; left: 2px; right: 2px;
  background: var(--hair);
  transition: background 150ms ease;
}
.resizer:hover::before,
.resizer.is-dragging::before { background: var(--blue); }
.resizer:focus-visible { outline: 2px solid var(--blue); outline-offset: -2px; }

/* ─── SECTION TILES (horizontal grid at top of editor pane) ───── */

.rail-tile {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  gap: 7px;
  width: 100%;
  min-height: 0;
  padding: 9px 10px;
  border: 1px solid var(--hair);
  border-radius: var(--r-2);
  background: var(--panel-2);
  color: var(--text-2);
  font-family: var(--f-ui);
  font-size: 12px;
  font-weight: var(--w-medium);
  text-align: left;
  transition: background 120ms ease, color 120ms ease, border-color 120ms ease, transform 120ms ease;
  overflow: hidden;
  z-index: 1;
}

.rail-tile:hover { background: var(--panel-3); color: var(--text-1); border-color: var(--hair-strong); }
.rail-tile:active { transform: scale(0.985); }
.rail-tile:focus-visible { box-shadow: var(--sh-focus); }

.rail-tile .rt-icon {
  display: inline-flex;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--text-2);
  transition: color 160ms ease;
}
.rail-tile .rt-icon svg { width: 18px; height: 18px; }
.rail-tile .rt-label {
  width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.2;
  letter-spacing: -0.005em;
}

.rail-tile .rt-badge {
  position: absolute;
  top: 8px; right: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 17px;
  height: 16px;
  padding: 0 5px;
  border-radius: 999px;
  background: var(--panel-4);
  color: var(--text-1);
  font-family: var(--f-mono);
  font-size: 10px;
  font-weight: var(--w-semi);
  font-variant-numeric: tabular-nums;
}
.rail-tile .rt-badge:empty { display: none; }

.rail-tile .rt-check {
  position: absolute;
  top: 8px; right: 8px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--green);
  color: var(--text-on-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.5);
  transition: opacity 220ms ease, transform 220ms cubic-bezier(.4, 1.4, .5, 1);
}
.rail-tile .rt-check svg { width: 10px; height: 10px; }
.rail-tile.complete .rt-check { opacity: 1; transform: scale(1); }
/* A count badge already signals completeness — don't show both. */
.rail-tile .rt-badge:not(:empty) ~ .rt-check { display: none; }

.rail-tile.is-active {
  color: var(--text-1);
  background: var(--red-soft);
  border-color: var(--red);
  box-shadow: 0 0 0 1px var(--red), 0 6px 18px var(--red-glow);
}
.rail-tile.is-active .rt-icon { color: var(--red); }
.rail-tile.is-active .rt-badge { background: var(--red); color: var(--text-on-accent); }

.rail-tile.is-overflow {
  border-color: var(--red);
  box-shadow: inset 0 0 0 1px var(--red-soft), 0 4px 12px var(--red-glow);
}
.rail-tile.is-overflow .rt-icon { color: var(--red); }
.rail-tile.is-overflow .rt-badge { background: var(--red-soft); color: var(--red); }

/* ─── CENTER CANVAS ───────────────────────────────────────────── */

.canvas {
  position: relative;
  min-width: 0;
  min-height: 0;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: transparent;
}

.canvas-toolbar {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--s-3) var(--s-5);
  border-bottom: 1px solid var(--hair);
  background: var(--panel-1);
  min-height: 50px;
}

.canvas-pulse {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: var(--red);
  opacity: 0;
  pointer-events: none;
  filter: blur(40px);
  z-index: var(--z-pulse);
}
.canvas-pulse.is-pulsing {
  animation: canvas-pulse 900ms cubic-bezier(.4, 0, .4, 1);
}
@keyframes canvas-pulse {
  0%   { opacity: 0; transform: translate(-50%, -50%) scale(0.5); }
  30%  { opacity: 0.4; transform: translate(-50%, -50%) scale(1); }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(1.5); }
}

.canvas-meta {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  font-family: var(--f-mono);
  font-size: 10.5px;
  font-weight: var(--w-medium);
  color: var(--text-3);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.cm-label { color: var(--text-2); }
.cm-page  { color: var(--text-1); font-variant-numeric: tabular-nums; }
.cm-updated { color: var(--text-2); font-variant-numeric: tabular-nums; text-transform: none; letter-spacing: 0.02em; }
.cm-divider { width: 1px; height: 12px; background: var(--hair-strong); }
.cm-warn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--red);
  text-transform: none;
  letter-spacing: 0.02em;
  font-weight: var(--w-semi);
}
.cm-warn[hidden] { display: none; }
.cm-warn svg { width: 12px; height: 12px; flex-shrink: 0; }

.canvas-controls { display: inline-flex; align-items: center; gap: var(--s-2); }

.zoom {
  display: inline-flex;
  align-items: center;
  height: 32px;
  padding: 0 4px;
  background: var(--panel-2);
  border: 1px solid var(--hair);
  border-radius: var(--r-2);
}
.zoom-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 4px;
  color: var(--text-2);
  transition: background 100ms ease, color 100ms ease;
}
.zoom-btn:hover { background: var(--panel-3); color: var(--text-1); }
.zoom-btn:focus-visible { box-shadow: var(--sh-focus); }
.zoom-btn svg { width: 13px; height: 13px; }
.zoom-val {
  font-family: var(--f-mono);
  font-size: 11.5px;
  font-weight: var(--w-medium);
  color: var(--text-1);
  font-variant-numeric: tabular-nums;
  width: 48px;
  text-align: center;
  letter-spacing: 0.02em;
}
.zoom-presets { display: inline-flex; gap: 2px; margin-left: 6px; align-items: center; height: 100%; }
.zoom-preset {
  background: transparent;
  border: 1px solid var(--hair);
  color: var(--text-2);
  font: inherit;
  font-size: 10.5px;
  font-weight: var(--w-medium);
  padding: 3px 8px;
  border-radius: var(--r-1);
  cursor: pointer;
  height: 24px;
  display: inline-flex;
  align-items: center;
  letter-spacing: 0.02em;
  transition: background 100ms ease, color 100ms ease, border-color 100ms ease;
}
.zoom-preset:hover { background: var(--panel-3); color: var(--text-1); }
.zoom-preset:focus-visible { box-shadow: var(--sh-focus); outline: none; }
.zoom-preset.is-active { background: var(--blue); color: var(--text-on-accent); border-color: var(--blue); }

.page-layout {
  display: inline-flex;
  align-items: center;
  height: 32px;
  padding: 3px;
  gap: 2px;
  background: var(--panel-2);
  border: 1px solid var(--hair);
  border-radius: var(--r-2);
}
.layout-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 24px;
  border-radius: 4px;
  color: var(--text-2);
  transition: background 100ms ease, color 100ms ease;
}
.layout-btn:hover { background: var(--panel-3); color: var(--text-1); }
.layout-btn:focus-visible { box-shadow: var(--sh-focus); outline: none; }
.layout-btn.is-active { background: var(--blue); color: var(--text-on-accent); }
.layout-btn svg { width: 15px; height: 15px; }

.canvas-stage {
  flex: 1;
  overflow: auto;
  position: relative;
  /* Block scroll container. We previously centred the page wrapper with
     `display:flex; justify-content:safe center`, but a flex child with the
     default `flex-shrink:1` is shrunk back down to fit the stage when its
     inline width is set to two pages — so the wrapper never overflows and
     horizontal scrolling fails. Centring via auto margins on a block-level
     child keeps its authored width intact and lets the left edge scroll into
     view in spread layout. */
  padding: 48px 32px 80px;
  scrollbar-width: thin;
  scrollbar-color: var(--panel-4) transparent;
}

.canvas-page {
  position: relative;
  z-index: 1;
  width: 210mm;
  margin-left: auto;
  margin-right: auto;
  background: transparent;
  border-radius: 2px;
  transform-origin: top center;
  /* Drop shadow is on the page wrapper itself (not a free-floating sibling)
     so it scales with the wrapper's CSS `zoom` and never detaches on zoom.
     `overflow: hidden` is intentionally removed — the iframe inside is sized
     to fill the wrapper, and the iframe's own body sets `overflow: hidden`
     via studioLayoutCss, so the wrapper doesn't need to clip. `will-change`
     and the `transition: transform` are removed: setZoom uses CSS `zoom`
     (not transform), and the page-fade-in animation drives its own keyframes,
     so the GPU layer was stale and produced a seam at fractional zoom. */
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
}

[data-theme="light"] .canvas-page {
  box-shadow: 0 24px 60px rgba(15, 18, 22, 0.18);
}

.canvas-page iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  background: transparent;
}

.canvas-page.is-refreshing { opacity: 0.7; transition: opacity 200ms ease; }
.canvas-page.is-refreshed { animation: page-fade-in 320ms ease-out; }
@keyframes page-fade-in { from { opacity: 0.5; transform: scale(0.995); } to { opacity: 1; transform: scale(1); } }

.render-shimmer {
  position: absolute;
  inset: 0;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 18, 22, 0.55);
  color: var(--text-1);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  pointer-events: none;
  animation: render-shimmer-fade 160ms ease-out;
}
.render-shimmer[hidden] { display: none; }
.render-shimmer-inner {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  background: var(--panel-3);
  border: 1px solid var(--hair);
  border-radius: 999px;
  box-shadow: var(--sh-mid);
  font-family: var(--f-ui);
  font-size: 12px;
  font-weight: var(--w-medium);
  color: var(--text-1);
  letter-spacing: 0.01em;
}
.render-spinner {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid var(--hair-strong);
  border-top-color: var(--blue);
  animation: render-shimmer-spin 0.8s linear infinite;
  flex-shrink: 0;
}
.render-shimmer-text { white-space: nowrap; }
@keyframes render-shimmer-spin { to { transform: rotate(360deg); } }
@keyframes render-shimmer-fade { from { opacity: 0; } to { opacity: 1; } }

[data-theme="light"] .render-shimmer { background: rgba(245, 246, 248, 0.7); }
[data-theme="light"] .render-shimmer-inner { background: var(--page); border-color: var(--hair-strong); }

/* ─── RIGHT INSPECTOR ─────────────────────────────────────────── */

.inspector {
  position: relative;
  background: var(--panel-1);
  border-left: 1px solid var(--hair);
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.ins-head {
  position: relative;
  z-index: 1;
  padding: var(--s-4) var(--s-4) var(--s-3);
  border-bottom: 1px solid var(--hair);
  background: var(--panel-1);
  flex-shrink: 0;
}
.ins-head .ins-nav { display: none; }

.ins-head-row {
  display: flex;
  align-items: baseline;
  gap: var(--s-2);
  margin-bottom: 4px;
}
.ins-section-eyebrow {
  font-family: var(--f-mono);
  font-size: 10px;
  font-weight: var(--w-medium);
  color: var(--text-3);
  letter-spacing: var(--tr-wide);
  text-transform: uppercase;
  font-variant-numeric: tabular-nums;
}

.ins-title {
  font-family: var(--f-display);
  font-size: var(--t-section);
  font-weight: var(--w-bold);
  color: var(--text-1);
  letter-spacing: var(--tr-tight);
  line-height: 1.15;
}

.ins-sub {
  font-family: var(--f-ui);
  font-size: 12px;
  font-weight: var(--w-regular);
  color: var(--text-2);
  line-height: 1.45;
  margin-top: 6px;
}

.ins-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: var(--s-4);
  padding: 4px;
  background: var(--panel-2);
  border: 1px solid var(--hair);
  border-radius: var(--r-2);
  width: fit-content;
}

.ins-nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 4px;
  color: var(--text-2);
  background: transparent;
  border: 0;
  cursor: pointer;
  transition: background 100ms ease, color 100ms ease;
}
.ins-nav-btn:hover { background: var(--panel-3); color: var(--text-1); }
.ins-nav-btn:focus-visible { box-shadow: var(--sh-focus); }
.ins-nav-btn:disabled { opacity: 0.3; cursor: not-allowed; }
.ins-nav-btn svg { width: 12px; height: 12px; }

.ins-nav-segments {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 0 4px;
}
.ins-seg {
  width: 16px;
  height: 3px;
  border-radius: 2px;
  background: var(--panel-3);
  border: 0;
  padding: 0;
  cursor: pointer;
  transition: background 200ms ease, width 200ms ease;
}
.ins-seg.is-past   { background: var(--green); }
.ins-seg.is-active { background: var(--red); width: 22px; }
.ins-seg:hover     { background: var(--text-2); }
.ins-seg.is-active:hover { background: var(--red); }

/* ─── PROGRESS STRIP (segmented nav in top bar) ───────────────── */

.progress-strip {
  display: flex;
  align-items: center;
  gap: var(--s-1);
  padding: 3px 5px;
  background: var(--panel-2);
  border: 1px solid var(--hair);
  border-radius: var(--r-2);
}
.progress-strip .ins-nav-segments { gap: 2px; padding: 0 3px; }
.progress-strip .ins-nav-segments .ins-seg { width: 10px; height: 4px; }
.progress-strip .ins-nav-segments .ins-seg.is-active { width: 16px; }
.progress-strip .ins-nav-btn {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  background: transparent;
  color: var(--text-2);
}
.progress-strip .ins-nav-btn:hover { background: var(--panel-3); color: var(--text-1); }
.progress-strip .ins-nav-btn svg { width: 12px; height: 12px; }
.progress-strip .ins-nav-sep {
  width: 1px;
  height: 16px;
  background: var(--hair);
  margin: 0 4px;
  flex-shrink: 0;
}
.progress-strip #jump-next-incomplete { color: var(--blue); }
.progress-strip #jump-next-incomplete:hover { background: var(--blue-soft); color: var(--blue); }

.ins-body {
  position: relative;
  z-index: 1;
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  scrollbar-width: thin;
  padding: var(--s-5);
  display: flex;
  flex-direction: column;
  gap: var(--s-4);
}

/* ─── FIELDS ──────────────────────────────────────────────────── */

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field-label {
  font-family: var(--f-ui);
  font-size: 10.5px;
  font-weight: var(--w-semi);
  letter-spacing: var(--tr-eyebrow);
  text-transform: uppercase;
  color: var(--text-3);
  display: flex;
  align-items: center;
  gap: 6px;
}
.field-label .field-counter {
  font-family: var(--f-mono);
  font-size: 9.5px;
  color: var(--text-3);
  margin-left: auto;
  font-variant-numeric: tabular-nums;
}
.field-hint {
  font-family: var(--f-ui);
  font-size: 11px;
  font-weight: var(--w-regular);
  color: var(--text-3);
  line-height: 1.5;
}
.field-hint code {
  font-family: var(--f-mono);
  font-size: 10.5px;
  background: var(--panel-2);
  padding: 1px 4px;
  border-radius: 3px;
  color: var(--text-2);
}

.url-hint {
  font-family: var(--f-ui);
  font-size: 10.5px;
  color: var(--red);
  padding: 2px 4px 0;
  line-height: 1.4;
}
.url-hint[hidden] { display: none; }

.input, .textarea, .select {
  width: 100%;
  padding: 9px 12px;
  background: var(--panel-2);
  color: var(--text-1);
  border: 1px solid var(--hair);
  border-radius: var(--r-2);
  font-family: var(--f-ui);
  font-size: var(--t-input);
  line-height: 1.4;
  transition: background 120ms ease, border-color 120ms ease, box-shadow 120ms ease;
}
.input::placeholder, .textarea::placeholder { color: var(--text-3); }
.input:hover, .textarea:hover, .select:hover { border-color: var(--hair-strong); }
.input:focus, .textarea:focus, .select:focus {
  background: var(--panel-1);
  border-color: var(--blue);
  box-shadow: var(--sh-focus);
  outline: none;
}
.textarea { resize: vertical; min-height: 80px; font-family: var(--f-ui); }
.textarea.auto-grow { overflow: hidden; resize: none; min-height: 60px; }
.select { appearance: none; background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%239BA1A8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><path d='m6 9 6 6 6-6'/></svg>"); background-repeat: no-repeat; background-position: right 10px center; background-size: 14px; padding-right: 32px; }

.input.mono, .textarea.mono { font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.01em; }
.input.is-invalid,
.textarea.is-invalid {
  border-color: var(--red);
  background: var(--red-soft);
}
.input.is-invalid:focus,
.textarea.is-invalid:focus {
  border-color: var(--red);
  box-shadow: 0 0 0 3px var(--red-soft);
}

.input-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-2); }
.input-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: var(--s-2); }

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
  color: var(--text-1);
  font-family: var(--f-ui);
  font-size: 12.5px;
  font-weight: var(--w-medium);
}
.toggle input { position: absolute; opacity: 0; pointer-events: none; }
.toggle .toggle-track {
  position: relative;
  width: 32px;
  height: 18px;
  background: var(--panel-3);
  border-radius: 999px;
  transition: background 160ms ease;
  flex-shrink: 0;
}
.toggle .toggle-track::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  background: var(--text-1);
  border-radius: 50%;
  transition: transform 200ms cubic-bezier(.4, 1.2, .4, 1), background 200ms ease;
}
.toggle input:checked + .toggle-track { background: var(--red); }
.toggle input:checked + .toggle-track::after { transform: translateX(14px); background: var(--text-on-accent); }
.toggle input:focus-visible + .toggle-track { box-shadow: var(--sh-focus); }

.hero-upload {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: var(--s-3);
  align-items: stretch;
}
.hero-preview {
  width: 100px;
  height: 70px;
  background: var(--panel-2);
  border: 1px dashed var(--hair-strong);
  border-radius: var(--r-2);
  background-size: cover;
  background-position: center;
  flex-shrink: 0;
  transition: background 120ms ease;
}
.hero-preview.empty {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-3);
}
.hero-preview.empty::before {
  content: "";
  width: 18px;
  height: 18px;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%239BA1A8' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'><rect width='18' height='18' x='3' y='3' rx='2' ry='2'/><circle cx='9' cy='9' r='2'/><path d='m21 15-3.086-3.086a2 2 0 0 0-2.828 0L6 21'/></svg>");
  background-size: contain;
  background-repeat: no-repeat;
  opacity: 0.6;
}
.hero-controls { display: flex; flex-direction: column; gap: 6px; }
.hero-controls .row { display: flex; gap: 6px; }
.btn-mini {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 28px;
  padding: 0 10px;
  border-radius: var(--r-1);
  background: var(--panel-3);
  color: var(--text-1);
  font-size: 11px;
  font-weight: var(--w-semi);
  letter-spacing: 0.02em;
  border: 1px solid var(--hair);
  transition: background 120ms ease, color 120ms ease;
}
.btn-mini:hover { background: var(--panel-4); }
.btn-mini:focus-visible { box-shadow: var(--sh-focus); }
.btn-mini svg { width: 12px; height: 12px; }

/* ─── HERO REFRAME (drag-to-pan, scroll-to-zoom) ──────────────── */

.hero-crop {
  position: relative;
  width: 100%;
  aspect-ratio: 210 / 64;
  border-radius: var(--r-2);
  border: 1px solid var(--hair);
  background: var(--panel-2);
  overflow: hidden;
  cursor: grab;
  user-select: none;
  touch-action: none;
}
.hero-crop:focus-visible { box-shadow: var(--sh-focus); outline: none; }
.hero-crop.is-grabbing { cursor: grabbing; }
.hero-crop.is-empty { cursor: default; }

.hero-crop-img {
  position: absolute;
  inset: 0;
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  transition: transform 60ms linear;
}

.hero-crop-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 140ms ease;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.28) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.28) 1px, transparent 1px);
  background-size: 33.33% 33.33%;
  mix-blend-mode: overlay;
}
.hero-crop:hover .hero-crop-grid,
.hero-crop.is-grabbing .hero-crop-grid { opacity: 1; }

.hero-crop-hint {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  color: var(--text-3);
  font-size: 11.5px;
  letter-spacing: 0.02em;
  pointer-events: none;
}
.hero-crop.is-empty .hero-crop-img { display: none; }
.hero-crop.is-empty .hero-crop-hint { display: flex; }

.hero-crop-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}
.hero-crop-controls .hcc-label {
  font-size: 11px;
  font-weight: var(--w-medium);
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.hero-crop-controls input[type="range"] { flex: 1; }
.hero-crop-controls .hcc-val {
  font-size: 11px;
  color: var(--text-2);
  font-variant-numeric: tabular-nums;
  min-width: 40px;
  text-align: right;
}

.stat-cell {
  background: var(--panel-2);
  border: 1px solid var(--hair);
  border-radius: var(--r-2);
  padding: var(--s-3);
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
}
.stat-cell-fixed { border-color: var(--hair-strong); border-style: dashed; }
.stat-idx {
  font-family: var(--f-mono);
  font-size: 10px;
  font-weight: var(--w-semi);
  color: var(--text-3);
  letter-spacing: var(--tr-wide);
  text-transform: uppercase;
}
.fixed-stat-val {
  font-family: var(--f-display);
  font-size: 22px;
  font-weight: var(--w-bold);
  color: var(--red);
  letter-spacing: var(--tr-tight);
  line-height: 1;
}
.fixed-stat-sub {
  font-family: var(--f-ui);
  font-size: 11.5px;
  color: var(--text-2);
}
.stat-input { font-family: var(--f-mono); font-size: 12.5px; letter-spacing: 0.01em; }
.stat-input-wrap { display: flex; flex-direction: column; gap: 2px; flex: 1; min-width: 0; }
.stat-input-label { font-size: 9px; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.04em; padding-left: 2px; }

.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-3); }

.computed-stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s-3);
  padding: 12px 14px;
  background: linear-gradient(135deg, var(--red-soft) 0%, transparent 100%);
  border: 1px solid var(--hair);
  border-radius: var(--r-2);
}
.computed-label {
  font-family: var(--f-mono);
  font-size: 10px;
  font-weight: var(--w-medium);
  color: var(--text-3);
  letter-spacing: var(--tr-wide);
  text-transform: uppercase;
}
.computed-value {
  font-family: var(--f-mono);
  font-size: 17px;
  font-weight: var(--w-bold);
  color: var(--text-1);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}
.computed-value strong { color: var(--red); font-weight: var(--w-bold); }

/* List items (careers, employers, certs, selection, prereqs) */
.repeat-list { display: flex; flex-direction: column; gap: var(--s-2); }
.repeat-item {
  position: relative;
  background: var(--panel-2);
  border: 1px solid var(--hair);
  border-radius: var(--r-2);
  padding: 10px 12px 12px;
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
  transition: border-color 160ms ease, background 160ms ease;
}
.repeat-item:focus-within { border-color: var(--blue); box-shadow: 0 0 0 1px var(--blue-soft); }
.repeat-item.removing { opacity: 0; transform: translateX(8px); transition: opacity 160ms ease, transform 160ms ease; }

.item-head {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  font-size: 11px;
  color: var(--text-3);
}
.drag-handle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 22px;
  font-size: 11px;
  line-height: 1;
  letter-spacing: -3px;
  color: var(--text-3);
  cursor: grab;
  user-select: none;
  flex-shrink: 0;
  margin-left: -2px;
  transition: color 120ms ease;
}
.drag-handle:hover { color: var(--text-1); }
.drag-handle:active { cursor: grabbing; }
.repeat-item, .section-card { user-select: none; }
.repeat-item input, .repeat-item textarea, .repeat-item select,
.section-card input, .section-card textarea, .section-card select {
  user-select: text;
  cursor: auto;
}
.repeat-item.is-dragging, .section-card.is-dragging {
  opacity: 0.45;
  background: var(--panel-3);
  border-style: dashed;
}
.repeat-item.is-dragging *, .section-card.is-dragging * { cursor: grabbing !important; }
.item-idx {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 4px;
  background: var(--panel-3);
  color: var(--text-2);
  font-family: var(--f-mono);
  font-size: 10px;
  font-weight: var(--w-semi);
  font-variant-numeric: tabular-nums;
}
.item-title {
  flex: 1;
  font-family: var(--f-ui);
  font-size: 12px;
  color: var(--text-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.item-title.is-empty { color: var(--text-3); font-style: italic; }
.item-actions { display: inline-flex; gap: 2px; }
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 4px;
  color: var(--text-2);
  transition: background 100ms ease, color 100ms ease;
}
.icon-btn:hover { background: var(--panel-3); color: var(--text-1); }
.icon-btn:focus-visible { box-shadow: var(--sh-focus); }
.icon-btn.danger:hover { background: var(--red-soft); color: var(--red); }
.icon-btn svg { width: 12px; height: 12px; }

.add-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 32px;
  padding: 0 12px;
  border-radius: var(--r-2);
  background: transparent;
  border: 1px dashed var(--hair-strong);
  color: var(--text-2);
  font-family: var(--f-ui);
  font-size: 12px;
  font-weight: var(--w-semi);
  letter-spacing: 0.01em;
  transition: background 120ms ease, color 120ms ease, border-color 120ms ease;
  align-self: flex-start;
}
.add-btn:hover { background: var(--panel-2); color: var(--text-1); border-color: var(--text-3); border-style: solid; }
.add-btn:focus-visible { box-shadow: var(--sh-focus); }
.add-btn svg { width: 12px; height: 12px; }

.empty {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  padding: var(--s-4);
  background: var(--panel-2);
  border: 1px dashed var(--hair);
  border-radius: var(--r-2);
  color: var(--text-3);
  font-family: var(--f-ui);
  font-size: 12px;
  line-height: 1.5;
}
.empty svg { width: 16px; height: 16px; flex-shrink: 0; color: var(--text-3); }

/* Curriculum */
.section-card {
  background: var(--panel-2);
  border: 1px solid var(--hair);
  border-radius: var(--r-2);
  padding: var(--s-3);
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
}
.section-card.removing { opacity: 0; transform: translateX(8px); transition: opacity 160ms ease, transform 160ms ease; }
.section-card .head { display: flex; align-items: center; gap: var(--s-2); }
.section-card .head .title { flex: 1; font-family: var(--f-display); font-size: 13.5px; font-weight: var(--w-semi); color: var(--text-1); }
.section-card .head .title.is-empty { color: var(--text-3); font-style: italic; }
.section-card .head .hours { font-family: var(--f-mono); font-size: 11px; color: var(--text-2); font-variant-numeric: tabular-nums; }
.section-card .head .share {
  font-family: var(--f-mono);
  font-size: 10.5px;
  color: var(--text-3);
  background: var(--panel-3);
  padding: 1px 6px;
  border-radius: 999px;
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}
.courses-label { font-family: var(--f-mono); font-size: 9.5px; color: var(--text-3); letter-spacing: var(--tr-wide); text-transform: uppercase; }
.courses { display: flex; flex-direction: column; gap: 4px; }
.course-row { display: flex; align-items: center; gap: 4px; }
.course-row .c-idx { font-family: var(--f-mono); font-size: 10.5px; color: var(--text-3); width: 22px; text-align: right; font-variant-numeric: tabular-nums; }
.course-row .input { flex: 1; padding: 6px 8px; font-size: 12px; }

/* ─── COMMAND PALETTE ─────────────────────────────────────────── */

.palette-scrim {
  position: fixed;
  inset: 0;
  background: rgba(15, 18, 22, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: var(--z-palette);
  animation: scrim-in 160ms ease-out;
}
[data-theme="light"] .palette-scrim { background: rgba(15, 18, 22, 0.32); }
@keyframes scrim-in { from { opacity: 0; } to { opacity: 1; } }

.palette {
  position: fixed;
  top: 14vh;
  left: 50%;
  transform: translateX(-50%);
  width: min(640px, 92vw);
  z-index: var(--z-palette);
  animation: palette-in 220ms cubic-bezier(.4, 1.2, .4, 1);
}
@keyframes palette-in { from { opacity: 0; transform: translateX(-50%) translateY(-12px) scale(0.98); } to { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); } }

.palette-card {
  background: var(--panel-2);
  border: 1px solid var(--hair-strong);
  border-radius: var(--r-3);
  box-shadow: var(--sh-high);
  overflow: hidden;
}

.palette-input-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--hair);
}
.palette-ico { display: inline-flex; color: var(--text-3); }
.palette-ico svg { width: 16px; height: 16px; }
.palette-input {
  flex: 1;
  background: transparent;
  border: 0;
  font-family: var(--f-display);
  font-size: 16px;
  font-weight: var(--w-medium);
  color: var(--text-1);
  letter-spacing: -0.005em;
  outline: none;
}
.palette-input::placeholder { color: var(--text-3); font-weight: var(--w-regular); }
.palette-esc {
  font-family: var(--f-mono);
  font-size: 9.5px;
  color: var(--text-3);
  background: var(--panel-3);
  border: 1px solid var(--hair);
  border-radius: 4px;
  padding: 2px 6px;
}

.palette-list {
  max-height: 50vh;
  overflow-y: auto;
  padding: 4px;
  scrollbar-width: thin;
}
.palette-group {
  padding: 6px 10px 4px;
  font-family: var(--f-mono);
  font-size: 9.5px;
  font-weight: var(--w-semi);
  letter-spacing: var(--tr-wide);
  text-transform: uppercase;
  color: var(--text-3);
}
.palette-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--r-1);
  color: var(--text-1);
  cursor: pointer;
  transition: background 100ms ease;
}
.palette-item:hover, .palette-item.is-focused { background: var(--panel-3); }
.palette-item .pi-ico { display: inline-flex; color: var(--text-2); width: 14px; height: 14px; }
.palette-item .pi-ico svg { width: 14px; height: 14px; }
.palette-item .pi-text { display: flex; flex-direction: column; gap: 1px; min-width: 0; flex: 1; }
.palette-item .pi-text strong { font-family: var(--f-ui); font-size: 12.5px; font-weight: var(--w-semi); }
.palette-item .pi-text em { font-family: var(--f-ui); font-size: 11px; font-weight: var(--w-regular); color: var(--text-2); font-style: normal; }
.palette-item .pi-kbd { display: inline-flex; align-items: center; gap: 2px; color: var(--text-3); }
.palette-item .pi-kbd kbd { font-size: 9.5px; padding: 1px 4px; }
.palette-empty { padding: 16px; text-align: center; color: var(--text-3); font-size: 12px; }

.palette-foot {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 8px 14px;
  border-top: 1px solid var(--hair);
  background: var(--panel-1);
  font-family: var(--f-mono);
  font-size: 9.5px;
  color: var(--text-3);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.palette-foot kbd { font-size: 9px; padding: 1px 4px; }

/* ─── TOAST ───────────────────────────────────────────────────── */

.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--ink);
  color: var(--text-1);
  border: 1px solid var(--hair-strong);
  border-radius: var(--r-2);
  box-shadow: var(--sh-high);
  font-family: var(--f-ui);
  font-size: 12.5px;
  font-weight: var(--w-medium);
  opacity: 0;
  pointer-events: none;
  z-index: var(--z-toast);
  transition: opacity 200ms ease, transform 220ms cubic-bezier(.4, 1.2, .4, 1);
  max-width: 480px;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); pointer-events: auto; }
.toast.ok   { background: var(--green-soft); border-color: var(--green); color: var(--text-1); }
.toast.error { background: rgba(245, 93, 93, 0.18); border-color: var(--err); color: var(--text-1); }
.toast-ico { display: inline-flex; color: currentColor; }
.toast-ico svg { width: 14px; height: 14px; }

/* ─── LOADING OVERLAY ─────────────────────────────────────────── */

.loading-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background: var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 320ms ease, visibility 320ms ease;
}
.loading-overlay.is-hidden { opacity: 0; visibility: hidden; pointer-events: none; }

.loading-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s-3);
  padding: 32px 40px;
  background: var(--panel-2);
  border: 1px solid var(--hair-strong);
  border-radius: var(--r-3);
  box-shadow: var(--sh-high);
  text-align: center;
  max-width: 360px;
}
.spinner {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2.5px solid var(--panel-3);
  border-top-color: var(--red);
  animation: pill-spin 0.9s linear infinite;
  margin-bottom: 4px;
}
.loading-title {
  font-family: var(--f-display);
  font-size: 17px;
  font-weight: var(--w-bold);
  color: var(--text-1);
  letter-spacing: var(--tr-tight);
}
.loading-detail {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ─── ENTRANCE / PAGE-LOAD CHOREOGRAPHY ──────────────────────── */

[data-appear] { opacity: 0; }
[data-appear="bar"]          { transform: translateY(-8px); animation: bar-in 480ms 80ms cubic-bezier(.4, 1.2, .4, 1) forwards; }
[data-appear="editor-pane"]  { transform: translateX(-12px); animation: editor-pane-in 520ms 180ms cubic-bezier(.4, 1.2, .4, 1) forwards; }
[data-appear="canvas"]       { transform: scale(0.985);     animation: canvas-in 600ms 240ms cubic-bezier(.4, 1.2, .4, 1) forwards; }
[data-appear="ins-head"]     { transform: translateY(6px);  animation: ins-head-in 400ms 300ms cubic-bezier(.4, 1.2, .4, 1) forwards; }
[data-appear="ins-body"]     { transform: translateY(8px);  animation: ins-body-in 360ms 320ms cubic-bezier(.4, 1.2, .4, 1) forwards; }
[data-appear="overlay"]      { animation: overlay-in 320ms ease-out forwards; }
[data-appear="overlay"].is-hidden { animation: overlay-out 280ms ease-in forwards; }

@keyframes bar-in          { to { opacity: 1; transform: translateY(0); } }
@keyframes editor-pane-in  { to { opacity: 1; transform: translateX(0); } }
@keyframes canvas-in       { 0% { opacity: 0; transform: scale(0.985); filter: blur(6px); } 60% { opacity: 1; filter: blur(0); } 100% { opacity: 1; transform: scale(1); filter: blur(0); } }
@keyframes ins-head-in     { to { opacity: 1; transform: translateY(0); } }
@keyframes ins-body-in     { to { opacity: 1; transform: translateY(0); } }
@keyframes overlay-in      { from { opacity: 0; } to { opacity: 1; } }
@keyframes overlay-out     { from { opacity: 1; } to { opacity: 0; } }

/* ─── RAIL TILE STAGGER ───────────────────────────────────────── */

.rail-tile {
  opacity: 0;
  transform: translateX(-6px);
  animation: tile-in 360ms cubic-bezier(.4, 1.2, .4, 1) forwards;
  animation-delay: calc(280ms + var(--ti, 0) * 32ms);
}
@keyframes tile-in { to { opacity: 1; transform: translateX(0); } }

/* ─── INSPECTOR FIELD STAGGER ─────────────────────────────────── */

.ins-body .field, .ins-body .stat-cell, .ins-body .repeat-item, .ins-body .section-card, .ins-body .computed-stat, .ins-body .empty {
  opacity: 0;
  transform: translateY(4px);
  animation: field-in 280ms cubic-bezier(.4, 1.2, .4, 1) forwards;
  animation-delay: calc(var(--fi, 0) * 28ms);
}
@keyframes field-in { to { opacity: 1; transform: translateY(0); } }

/* ─── REGION PULSE — when a section is edited ─────────────────── */

.ins-body.is-pulsing { animation: ins-pulse 600ms cubic-bezier(.4, 0, .4, 1); }
@keyframes ins-pulse {
  0%   { box-shadow: 0 0 0 0 transparent; }
  20%  { box-shadow: 0 0 0 3px var(--red-soft); }
  100% { box-shadow: 0 0 0 0 transparent; }
}

/* ─── ACCESSIBILITY ───────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  [data-appear] { opacity: 1 !important; transform: none !important; }
  .canvas-pulse { display: none !important; }
  .rail-tile { opacity: 1 !important; transform: none !important; }
  .ins-body .field, .ins-body .stat-cell, .ins-body .repeat-item, .ins-body .section-card, .ins-body .computed-stat, .ins-body .empty {
    opacity: 1 !important; transform: none !important;
  }
  .ins-body.is-pulsing { animation: none !important; }
}

/* ─── SCROLLBARS ──────────────────────────────────────────────── */

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--panel-3);
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover { background: var(--panel-4); background-clip: padding-box; border: 2px solid transparent; }

/* ─── RESPONSIVE ──────────────────────────────────────────────── */

@media (max-width: 1180px) {
  :root { --editor-w: 360px; }
  .cb-btn .cb-label { display: none; }
  .cb-btn.kbd-hint .cb-kbd { display: none; }
}
@media (max-width: 900px) {
  .studio {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(0, 1.3fr) minmax(0, 1fr);
    grid-template-areas: "editor" "canvas";
  }
  .editor-pane { grid-area: editor; border-right: 0; border-bottom: 1px solid var(--hair); }
  .canvas     { grid-area: canvas; }
  .resizer    { display: none !important; }
  .canvas-stage { padding: 24px 16px 56px; }
}
@media (max-width: 720px) {
  :root { --editor-w: 320px; }
  .brand-words { display: none; }
}