/* Modifiers applet — 1920x1080 fixed canvas, scaled via --scaleFactor. */

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

:root {
  --scaleFactor: 1;
  --base-width: 1920px;
  --base-height: 1080px;

  /* Palette sampled from DOC/Modifiers.pdf */
  --color-page-bg-top: #9b8fd0;
  --color-page-bg-bottom: #b9a9dd;
  --color-card: #f2f2f2;
  --color-accent: #e6007e;          /* magenta title chip + sentence border */
  --color-chip: #16386b;            /* navy draggable chip */
  --color-chip-light: #2a5ca8;
  --color-correct-base: #6aa84f;    /* green bubble / correct drop */
  --color-correct-light: #b6d7a8;
  --color-wrong-base: #d97b73;      /* salmon bubble / wrong drop */
  --color-option: #d4a017;          /* gold Word/Phrase/Clause buttons */
  --color-option-dark: #a67c00;
  --color-continue: #f6b26b;        /* orange Continue */
  --color-title-chip: #6d9eeb;      /* blue Misplaced Modifier title chip */
  --color-panel-blue: #c3d3ea;      /* "Describing:" panel */
  --color-panel-pink: #ec7fc0;      /* screen 4 MODIFIERS panel */
  --color-panel-tan: #d9c2a5;       /* screen 9 definition band */
  --color-target: #8e7cc3;          /* purple target header */
  --color-target-zone: #f9cb9c;     /* orange drop zone */
  --color-muted: #b0b0b0;
  --color-text: #1a1a1a;
  --color-link: #12406e;

  --font-family-primary: Arial, Helvetica, sans-serif;
}

html, body {
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  font-family: var(--font-family-primary);
  background: #6f639f;
  color: var(--color-text);
  -webkit-tap-highlight-color: transparent;
}

.responsive-container {
  width: 100vw;
  height: 100vh;
  position: relative;
  overflow: hidden;
}

.responsive-wrapper {
  width: var(--base-width);
  height: var(--base-height);
  position: absolute;
  top: 50%;
  left: 50%;
  transform-origin: top left;
  transform: scale(var(--scaleFactor)) translate(-50%, -50%);
  background: linear-gradient(160deg, var(--color-page-bg-top) 0%, var(--color-page-bg-bottom) 100%);
}

#app { width: 100%; height: 100%; }

/* ---------- Shell ---------- */

.modifier-applet {
  width: 1920px;
  height: 1080px;
  display: flex;
  flex-direction: column;
  position: relative;
  padding: 0 64px 40px;
}

.applet-header {
  height: 108px;
  flex: 0 0 108px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  color: var(--color-text);
  text-align: center;
}

/* Blue title chip — the deck uses blue for Misplaced Modifier throughout
   (pages 22-29), distinguishing it from Applet 1's magenta "Modifiers" chip. */
.applet-header--chip span {
  background: var(--color-title-chip);
  color: var(--color-text);
  font-weight: normal;
  padding: 12px 44px;
  border-radius: 10px;
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.25);
}

.applet-body {
  flex: 1;
  display: flex;
  min-height: 0;
}

.stage-card {
  flex: 1;
  background: var(--color-card);
  border-radius: 56px;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.18);
  padding: 48px 64px;
  display: flex;
  flex-direction: column;
  position: relative;
  min-height: 0;
}

.applet-footer {
  height: 96px;
  flex: 0 0 96px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.instruction {
  font-size: 34px;
  text-align: center;
  line-height: 1.35;
  margin-bottom: 12px;
}

/* Screens 10-16 left-align the instruction (reference/screen-10.png). */
.instruction--left { text-align: left; padding-left: 12px; }

.instruction strong { color: var(--color-link); }

/* ---------- Continue button ---------- */

.continue-button {
  background: var(--color-continue);
  border: 1px solid #c9884a;
  border-radius: 10px;
  font-family: inherit;
  font-size: 34px;
  color: var(--color-text);
  padding: 12px 44px;
  cursor: pointer;
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.25);
}

.continue-button:hover { filter: brightness(1.05); }

.continue-button--pulse { animation: continuePulse 1.2s ease-in-out infinite; }

@keyframes continuePulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.07); }
}

/* ---------- Sentence box ---------- */

.sentence-box {
  border: 3px solid var(--color-accent);
  border-radius: 18px;
  background: #ffffff;
  padding: 22px 40px;
  font-size: 42px;
  line-height: 1.5;
  text-align: center;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 104px;
}

.sentence-box--plain { border-color: #cccccc; }

/* Navy chip — the draggable modifier */
.chip {
  background: linear-gradient(180deg, var(--color-chip-light) 0%, var(--color-chip) 100%);
  color: #ffffff;
  border-radius: 10px;
  padding: 6px 22px;
  font-size: 38px;
  box-shadow: 0 3px 5px rgba(0, 0, 0, 0.35);
  cursor: grab;
  user-select: none;
  touch-action: none;
}

.chip--dragging { opacity: 0.35; }

/* Positioned in LOCAL (1920x1080) coordinates by app.js's screenToLocal, as a
   child of .responsive-wrapper — so it inherits scale(--scaleFactor) exactly
   like the chip it represents, instead of rendering at a fixed screen size
   that only matches the canvas at 100% zoom. See attachChipDrag(). */
.drag-ghost {
  position: absolute;
  z-index: 999;
  pointer-events: none;
  transform: translate(-50%, -50%);
  background: linear-gradient(180deg, var(--color-chip-light) 0%, var(--color-chip) 100%);
  color: #ffffff;
  border-radius: 10px;
  padding: 6px 22px;
  font-size: 38px;
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.4);
  white-space: nowrap;
}

/* Drop slots between words on screens 1-3 */
/* Screens 1-3 have no placeholder boxes — words simply reflow around the chip.
   The whole sentence box is the drop area; the nearest word gap wins. */
.only-word { user-select: none; }

/* ---------- Speech bubble ---------- */

.bubble {
  position: relative;
  background: var(--color-correct-base);
  border: 1px solid #4c7a35;
  border-radius: 14px;
  padding: 20px 30px;
  font-size: 30px;
  line-height: 1.35;
  text-align: center;
  max-width: 620px;
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.25);
}

.bubble--wrong { background: var(--color-wrong-base); border-color: #a85a52; }

.bubble::after {
  content: '';
  position: absolute;
  top: -26px;
  left: 50%;
  transform: translateX(-50%);
  border-left: 22px solid transparent;
  border-right: 22px solid transparent;
  border-bottom: 26px solid var(--color-correct-base);
}

.bubble--wrong::after { border-bottom-color: var(--color-wrong-base); }

/* Anchored bubble: sits left-aligned within the sentence's width and its tail
   tracks --tail-x, set in JS to the centre of the chip it explains. */
.bubble--anchored {
  align-self: flex-start;
  margin-top: 8px;
  transition: margin-left 0.25s ease;
}

/* --tail-x is set in JS, in unscaled local px measured from the bubble's own
   left edge, so the tail lands exactly under the centre of the chip. */
.bubble--anchored::after {
  left: var(--tail-x, 50%);
  transition: left 0.25s ease;
}

.bubble-hint {
  display: block;
  margin-top: 8px;
  font-size: 24px;
  font-style: italic;
  opacity: 0.9;
}

/* ---------- Shared: definition band (from Applet 1's screen 9) ---------- */

.def-band {
  background: var(--color-panel-tan);
  border: 1px solid #b09a7d;
  border-radius: 24px;
  padding: 34px 48px;
  font-size: 36px;
  line-height: 1.45;
  text-align: center;
}

.def-band strong { font-weight: bold; }

/* ---------- Screen 1: wrong/right comparison (deck p26) ---------- */

.mm-compare {
  flex: 1;
  display: flex;
  gap: 64px;
  padding: 0 24px;
  align-items: stretch;
}

.mm-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

/* Sentence card at the top of each column. Magenta border matches the deck. */
.mm-sentence {
  width: 100%;
  border: 3px solid var(--color-accent);
  border-radius: 14px;
  padding: 20px 26px;
  font-size: 34px;
  line-height: 1.35;
  text-align: center;
}

.mm-sentence .mod { color: var(--color-link); font-weight: bold; }

.mm-col--wrong .mm-sentence { background: #eda9a9; }
.mm-col--right .mm-sentence { background: #7cab5c; }

/* Arrow + verdict mark between the sentence and its meaning. */
.mm-link {
  flex: 1;
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 26px;
}

.mm-arrow { font-size: 64px; line-height: 1; }
.mm-col--wrong .mm-arrow { color: #cc0000; }
.mm-col--right .mm-arrow { color: #2e7d32; }

.mm-mark { font-size: 60px; line-height: 1; font-weight: bold; }
.mm-col--wrong .mm-mark { color: #cc0000; }
.mm-col--right .mm-mark { color: #4a9c2d; }

.mm-meaning {
  width: 100%;
  border-radius: 14px;
  padding: 20px 26px;
  font-size: 32px;
  line-height: 1.35;
  text-align: center;
}

.mm-meaning strong { font-weight: bold; }

.mm-col--wrong .mm-meaning { background: #eda9a9; border: 3px solid #cc0000; }
.mm-col--right .mm-meaning { background: #7cab5c; border: 3px solid #4a9c2d; }

/* ---------- Screens 2-5: "What should almost modify?" (deck p22-25) ---------- */

.quiz-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 26px;
  padding-top: 12px;
}

.quiz-sentence { width: 100%; }
.quiz-sentence .mod { color: var(--color-link); font-weight: bold; }

.quiz-question {
  font-size: 34px;
  font-weight: bold;
  text-align: left;
}

/* Options stacked left, feedback bubble anchored to the right of them. */
.quiz-main { flex: 1; display: flex; gap: 48px; align-items: flex-start; }

.quiz-options {
  flex: 0 0 340px;
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.option-button {
  background: linear-gradient(180deg, #f5d049 0%, #e8c02f 100%);
  border: 1px solid #b08c00;
  border-radius: 10px;
  font-family: inherit;
  font-size: 32px;
  color: var(--color-text);
  padding: 16px 20px;
  cursor: pointer;
  box-shadow: 0 3px 5px rgba(0, 0, 0, 0.28);
}

.option-button:hover:not(:disabled) { filter: brightness(1.05); }

.option-button--wrong {
  background: linear-gradient(180deg, #e08b84 0%, var(--color-wrong-base) 100%);
  border-color: #a85a52;
}

.option-button--correct {
  background: linear-gradient(180deg, #93c47d 0%, #6aa84f 100%);
  border-color: #4c7a35;
}

.option-button:disabled { cursor: default; }

/* The feedback bubble sits beside the options, with its tail pointing left at
   the tapped pill — a side variant of the tail used elsewhere. */
.quiz-feedback { flex: 1; display: flex; align-items: flex-start; }

.bubble--side { margin-left: 18px; max-width: 760px; }

.bubble--side::after {
  top: var(--tail-y, 40px);
  left: -26px;
  transform: none;
  border-left: none;
  border-right: 26px solid var(--color-correct-base);
  border-top: 20px solid transparent;
  border-bottom: 20px solid transparent;
}

.bubble--side.bubble--wrong::after { border-right-color: var(--color-wrong-base); }

.bubble-line { display: block; }
.bubble-line + .bubble-line { margin-top: 14px; }
.bubble-line strong { font-weight: bold; }

/* ---------- Screens 6-9: drag the modifier into place ---------- */

.drag-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 30px;
  padding-top: 40px;
}

.drag-progress { font-size: 26px; color: #666666; align-self: flex-start; }

.drag-sentence-group {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.drag-body .sentence-box { width: 100%; }

/* Positioned by app.js's positionDragHint in local px relative to the
   sentence box: just right of the modifier chip, vertically centred on it. */
.drag-hint-anchor {
  position: absolute;
  transform: translate(4px, -50%);
  z-index: 5;
}

/* Words are plain text; the modifier is the only draggable element. */
.drag-word { user-select: none; }

.chip--correct {
  background: linear-gradient(180deg, #93c47d 0%, #38761d 100%);
  border: 1px solid #2b5c14;
}

.chip--wrong {
  background: linear-gradient(180deg, #e08b84 0%, #cc4125 100%);
  border: 1px solid #a83a22;
}

.drag-corrected {
  font-size: 32px;
  font-weight: bold;
  color: #274e13;
  text-align: center;
}

/* ---------- Gesture hint ---------- */


/* ---------- Affordances: gesture hints + glow ---------- */

/* Animated finger. Decorative only — never blocks the thing it points at. */
.gesture-hint {
  position: absolute;
  pointer-events: none;
  width: 110px;
  z-index: 40;
  filter: drop-shadow(0 3px 6px rgba(0, 0, 0, 0.35));
}

.gesture-hint-img { width: 100%; display: block; }

/* Anchored just below-right of the target, so the fingertip sits on it. */
.gesture-hint--tap { width: 96px; }
.gesture-hint--drag { width: 130px; }

/* Placed relative to a positioned parent by these modifiers. */
.gesture-hint--below { top: 100%; left: 50%; margin-left: -18px; margin-top: -14px; }
.gesture-hint--chip { top: 78%; left: 62%; }

/* Glow — used instead of a finger when SEVERAL targets are all tappable and a
   single pointing finger would imply only one of them is the right one. */
@keyframes targetGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 179, 0, 0.0); }
  50% { box-shadow: 0 0 0 10px rgba(255, 179, 0, 0.35); }
}

.glow-target {
  animation: targetGlow 1.6s ease-in-out infinite;
  border-radius: 10px;
}

/* Stagger so the three read as a set to scan, not one thing to hit. */
.glow-target:nth-of-type(2) { animation-delay: 0.22s; }
.glow-target:nth-of-type(3) { animation-delay: 0.44s; }

@media (prefers-reduced-motion: reduce) {
  .glow-target,
  .continue-button--pulse { animation: none !important; }
}