:root {
  --ink: #2b2620;
  --paper: #fdfbf2;
  --card-bg: #fffdf6;
  /* wobbly hand-drawn border shapes */
  --wobble-a: 255px 15px 225px 15px / 15px 225px 15px 255px;
  --wobble-b: 15px 225px 15px 255px / 255px 15px 225px 15px;
  --wobble-c: 225px 15px 255px 15px / 15px 255px 15px 225px;
  /* sticky-note pastels */
  --pink: #ffd6de;
  --blue: #cfeaff;
  --yellow: #fff1b8;
  --green: #d8f6cf;
  --purple: #e6dcff;
  --orange: #ffe3c4;
}

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

html, body {
  position: fixed;
  inset: 0;
  overflow: hidden;
  width: 100%;
  height: 100%;
}

body {
  background: var(--paper);
  /* sketchbook margin doodles (very faint) over the dot grid */
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='460' height='460'%3E%3Cg fill='none' stroke='%232b2620' stroke-opacity='0.08' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M62 64 l4 12 13 1 -10 8 4 13 -11 -7 -11 7 4 -13 -10 -8 13 -1 z'/%3E%3Cpath d='M348 58 c11 -1 17 8 14 17 -3 9 -13 12 -21 8 -8 -4 -10 -14 -5 -21 6 -9 19 -10 26 -3'/%3E%3Cpath d='M168 178 q10 -12 20 0 t20 0 t20 0'/%3E%3Cpath d='M92 296 v18 M83 305 h18'/%3E%3Ccircle cx='305' cy='318' r='11'/%3E%3Cpath d='M398 236 l12 12 M410 236 l-12 12'/%3E%3Cpath d='M182 402 c-4 -9 -15 -5 -13 3 1 6 13 11 13 11 0 0 12 -5 13 -11 2 -8 -9 -12 -13 -3'/%3E%3Cpath d='M388 398 l7 -9 7 9 7 -9 7 9'/%3E%3Cpath d='M36 198 c14 -14 28 4 11 9 -11 3 -9 -13 9 -11'/%3E%3C/g%3E%3C/svg%3E"),
    radial-gradient(#e9e4d5 1.1px, transparent 1.1px);
  background-size: 460px 460px, 26px 26px;
  color: var(--ink);
  font-family: 'Patrick Hand', 'Comic Sans MS', cursive;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--yellow); }

/* ---------- layers ---------- */

.copy        { z-index: 1; }
.doodle      { z-index: 1; }
#strings     { z-index: 4; } /* above #world so strings are clickable (snip!) */
#world       { z-index: 3; }
.controls    { z-index: 20; }
footer       { z-index: 20; }
#overlay     { z-index: 50; }

[hidden] { display: none !important; }

/* ---------- physics world ---------- */

#world {
  position: fixed;
  inset: 0;
  touch-action: none;
}

#strings {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.string {
  fill: none;
  stroke: var(--ink);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.75;
}

.string-hit {
  fill: none;
  stroke: transparent;
  stroke-width: 14;
  pointer-events: stroke;
  cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='26' height='26'%3E%3Ctext y='20' font-size='20'%3E✂️%3C/text%3E%3C/svg%3E") 13 13, crosshair;
}

/* ---------- terrain ---------- */

.mound {
  position: absolute;
  left: 0;
  top: 0;
  border: 2.5px solid var(--ink);
  border-radius: 50%;
  will-change: transform;
}

.m-green  { background: var(--green); }
.m-yellow { background: var(--yellow); }

.plank {
  position: absolute;
  left: 0;
  top: 0;
  background: var(--card-bg);
  border: 2.5px solid var(--ink);
  border-radius: 12px 4px 10px 5px / 5px 9px 4px 10px;
  box-shadow: 2px 2px 0 rgba(43, 38, 32, 0.5);
  cursor: grab;
  will-change: transform;
}

.wedge { position: absolute; pointer-events: none; }

.wedge polygon {
  fill: var(--card-bg);
  stroke: var(--ink);
  stroke-width: 2.5;
  stroke-linejoin: round;
}

.ripple {
  position: absolute;
  width: 24px;
  height: 24px;
  margin: -12px 0 0 -12px;
  border: 3px solid var(--ink);
  border-radius: 50%;
  pointer-events: none;
  animation: ripple 0.55s ease-out forwards;
}

@keyframes ripple {
  from { transform: scale(0.4); opacity: 0.7; }
  to   { transform: scale(8);   opacity: 0; }
}

.doodle-poly { display: block; overflow: visible; }

.doodle-poly polygon {
  stroke: var(--ink);
  stroke-width: 2.5;
  stroke-linejoin: round;
}

.letter {
  position: absolute;
  left: 0;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg);
  border: 2.5px solid var(--ink);
  border-radius: var(--wobble-b);
  box-shadow: 2px 3px 0 rgba(43, 38, 32, 0.75);
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
  will-change: transform;
}

.card {
  position: absolute;
  left: 0;
  top: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  background: var(--card-bg);
  border: 2.5px solid var(--ink);
  border-radius: var(--wobble-a);
  box-shadow: 3px 4px 0 rgba(43, 38, 32, 0.8);
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
  will-change: transform;
}

.grabbing, .grabbing .card, .grabbing .letter { cursor: grabbing !important; }

.card .emoji { font-size: 30px; line-height: 1; pointer-events: none; }

.card .pname {
  font-size: 17px;
  max-width: 92%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  pointer-events: none;
}

.dangler {
  position: absolute;
  left: 0;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  background: var(--card-bg);
  border: 2.5px solid var(--ink);
  border-radius: var(--wobble-c);
  box-shadow: 2px 3px 0 rgba(43, 38, 32, 0.75);
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  will-change: transform;
}

.dangler svg {
  width: 60%;
  height: 60%;
  display: block;
  pointer-events: none;
}

.dangler.q {
  font-size: 28px;
  font-family: 'Gochi Hand', cursive;
}

.letter.lf1 { font-family: 'Caveat', cursive; font-weight: 700; }
.letter.lf2 { font-family: 'Gochi Hand', cursive; }
.letter.lf3 { font-family: 'Schoolbell', cursive; }
.letter.lf4 { font-family: 'Coming Soon', cursive; }

.card.small .pname { font-size: 14px; }
.card.small .emoji { font-size: 24px; }

.toy {
  position: absolute;
  left: 0;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
  will-change: transform;
}

.toy.ball {
  background: var(--pink);
  border: 2.5px solid var(--ink);
  border-radius: 50%;
  box-shadow: 2px 3px 0 rgba(43, 38, 32, 0.55);
}

.toy.ball.b1 { background: var(--blue); }
.toy.ball.b2 { background: var(--yellow); }
.toy.ball.b3 { background: var(--green); }
.toy.ball.b0 { background: var(--orange); }

.tint0 { background: var(--pink);   border-radius: var(--wobble-a); }
.tint1 { background: var(--blue);   border-radius: var(--wobble-b); }
.tint2 { background: var(--yellow); border-radius: var(--wobble-c); }
.tint3 { background: var(--green);  border-radius: var(--wobble-b); }
.tint4 { background: var(--purple); border-radius: var(--wobble-a); }
.tint5 { background: var(--orange); border-radius: var(--wobble-c); }

/* ---------- copy ---------- */

.copy {
  position: fixed;
  top: 188px;
  left: 0;
  right: 0;
  text-align: center;
  pointer-events: none;
}

.tagline {
  font-family: 'Caveat', cursive;
  font-weight: 600;
  font-size: clamp(24px, 3.6vw, 36px);
}

.hint {
  margin-top: 2px;
  font-size: clamp(14px, 2vw, 17px);
  opacity: 0.6;
}

.doodle.arrow {
  position: fixed;
  top: 262px;
  left: calc(50% + 130px);
  width: 84px;
  height: auto;
  transform: rotate(18deg);
  opacity: 0.5;
  pointer-events: none;
}

.doodle path {
  stroke: var(--ink);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

@media (max-width: 640px) {
  .doodle.arrow { display: none; }
  .copy { top: 168px; }
}

/* ---------- controls ---------- */

.controls {
  position: fixed;
  top: 16px;
  right: 16px;
  left: 16px;
  display: flex;
  flex-wrap: wrap; /* whole buttons wrap to a new row, labels never do */
  justify-content: flex-end;
  gap: 10px;
  pointer-events: none;
}

.controls button { pointer-events: auto; }

@media (max-width: 640px) {
  .controls { top: 10px; right: 10px; left: 10px; gap: 7px; }
  .controls button { font-size: 15px; padding: 4px 11px; }
}

button, .btn {
  font-family: inherit;
  font-size: 17px;
  white-space: nowrap;
  color: var(--ink);
  background: var(--card-bg);
  border: 2.5px solid var(--ink);
  border-radius: var(--wobble-c);
  box-shadow: 2px 3px 0 rgba(43, 38, 32, 0.8);
  padding: 6px 16px;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.12s ease;
}

button:hover, .btn:hover { transform: rotate(-2deg) scale(1.05); }
button:active, .btn:active { transform: translate(2px, 3px); box-shadow: none; }

/* ---------- footer ---------- */

footer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  justify-content: flex-end;
  padding: 12px 18px;
  pointer-events: none;
  font-size: 16px;
}

footer .credit {
  opacity: 0.55;
  transition: transform 0.6s ease;
}

.upside-down footer .credit { transform: rotate(180deg); }

@media (max-width: 560px) {
  footer .credit { display: none; }
}

/* ---------- modal ---------- */

#overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(251, 248, 240, 0.72);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
}

#modal {
  position: relative;
  width: min(460px, calc(100vw - 44px));
  background: var(--card-bg);
  border: 3px solid var(--ink);
  border-radius: var(--wobble-a);
  box-shadow: 6px 7px 0 rgba(43, 38, 32, 0.85);
  padding: 34px 28px 28px;
  text-align: center;
  animation: pop-in 0.22s ease-out;
}

@keyframes pop-in {
  from { transform: scale(0.85) rotate(-3deg); opacity: 0; }
  to   { transform: scale(1) rotate(0deg);     opacity: 1; }
}

#closeBtn {
  position: absolute;
  top: 10px;
  right: 12px;
  padding: 2px 10px;
  font-size: 16px;
}

.m-emoji { font-size: 52px; line-height: 1.2; }

.m-title {
  font-family: 'Caveat', cursive;
  font-weight: 700;
  font-size: 42px;
  margin: 4px 0 6px;
}

/* polaroid-style screenshot with a bit of tape */
.m-shotwrap {
  position: relative;
  margin: 10px auto 14px;
  width: 92%;
  transform: rotate(-1.5deg);
}

.m-shotwrap::before {
  content: '';
  position: absolute;
  top: -9px;
  left: 50%;
  width: 74px;
  height: 20px;
  transform: translateX(-50%) rotate(-4deg);
  background: rgba(240, 220, 130, 0.55);
  border: 1px solid rgba(43, 38, 32, 0.15);
  z-index: 1;
}

.m-shot {
  display: block;
  width: 100%;
  border: 2.5px solid var(--ink);
  border-radius: 6px 3px 7px 4px / 4px 6px 3px 7px;
  box-shadow: 3px 4px 0 rgba(43, 38, 32, 0.5);
}

.m-desc { font-size: 19px; line-height: 1.45; }

.m-links {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 20px;
}

.m-links .btn { background: var(--yellow); }
.m-links .btn + .btn { background: var(--blue); }

/* ---------- fallbacks ---------- */

.no-physics #world {
  position: static;
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  justify-content: center;
  align-content: flex-start;
  padding: 90px 24px 80px;
  height: 100%;
  overflow: auto;
  touch-action: auto;
}

.no-physics .card {
  position: static;
  width: 140px;
  height: 104px;
  cursor: pointer;
}

.noscript {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--paper);
  padding: 60px 30px;
  text-align: center;
}

.noscript h1 { font-family: 'Caveat', cursive; font-size: 56px; }
.noscript ul { list-style: none; margin-top: 16px; }
.noscript a { color: var(--ink); }