:root {
  --pink: #FF006E;
  --cyan: #00F5FF;
  --lime: #BFFF00;
  --purple: #B5179E;
  --yellow: #FFD60A;
  --tangerine: #FF6B35;
  --black: #0A0A0A;
  --paper: #FFF8F0;
}

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

html, body {
  background: var(--paper);
  color: var(--black);
  font-family: 'Trebuchet MS', sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
}

body {
  position: relative;
  isolation: isolate;
}

.bg-dots {
  position: fixed;
  inset: -200px;
  z-index: -2;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 14% 22%, var(--pink) 2px, transparent 3px),
    radial-gradient(circle at 76% 30%, var(--cyan) 2px, transparent 3px),
    radial-gradient(circle at 38% 68%, var(--lime) 2px, transparent 3px),
    radial-gradient(circle at 88% 84%, var(--yellow) 2px, transparent 3px),
    radial-gradient(circle at 56% 50%, var(--purple) 2px, transparent 3px);
  background-size: 100px 100px;
  animation: drift 6s linear infinite;
  will-change: transform;
  transform: translateZ(0);
}

.blob {
  position: fixed;
  z-index: -1;
  pointer-events: none;
  border-radius: 50%;
  filter: blur(40px);
  opacity: 0.35;
  will-change: transform;
}

.blob-a {
  width: 50vmin;
  height: 50vmin;
  background: radial-gradient(circle, var(--pink), transparent 70%);
  top: -10vmin;
  left: -10vmin;
  animation: float-a 14s ease-in-out infinite;
}

.blob-b {
  width: 60vmin;
  height: 60vmin;
  background: radial-gradient(circle, var(--cyan), transparent 70%);
  bottom: -15vmin;
  right: -15vmin;
  animation: float-b 16s ease-in-out infinite;
}

main.main { position: relative; }

@keyframes drift {
  from { transform: translate3d(0, 0, 0); }
  to   { transform: translate3d(200px, 200px, 0); }
}

@keyframes float-a {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50%      { transform: translate3d(60vw, 50vh, 0) scale(1.3); }
}

@keyframes float-b {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50%      { transform: translate3d(-50vw, -55vh, 0) scale(0.8); }
}

.header {
  text-align: center;
  padding: 70px 8px 8px;
}

.title {
  font-family: 'Impact', 'Arial Black', sans-serif;
  font-size: clamp(36px, 11vw, 64px);
  letter-spacing: 2px;
  color: var(--paper);
  -webkit-text-stroke: 2px var(--black);
  text-shadow:
    4px 4px 0 var(--pink),
    8px 8px 0 var(--cyan),
    12px 12px 0 var(--black);
  display: inline-block;
  line-height: 0.95;
  text-transform: uppercase;
  animation: wobble 3.5s ease-in-out infinite;
  transform-origin: center;
}

@keyframes wobble {
  0%, 100% { transform: rotate(-2.5deg); }
  50% { transform: rotate(2.5deg); }
}

.main {
  max-width: 640px;
  margin: 0 auto;
  padding: 8px 14px 80px;
}

.controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}


.size-selector {
  display: flex;
  gap: 4px;
  padding: 5px;
  background: var(--black);
  border-radius: 999px;
  box-shadow: 4px 4px 0 var(--cyan);
}

.size-btn {
  font-family: 'Arial Black', 'Helvetica Bold', system-ui, sans-serif;
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 0.5px;
  padding: 9px 20px;
  border: none;
  border-radius: 999px;
  background: var(--paper);
  color: var(--black);
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.size-btn:hover { transform: scale(1.04); }

.size-btn.active {
  background: var(--pink);
  color: var(--paper);
  transform: scale(1.08);
}

.new-card-btn {
  position: fixed;
  top: 12px;
  right: 12px;
  z-index: 100;
  font-family: 'Impact', 'Arial Black', sans-serif;
  font-size: 14px;
  letter-spacing: 1px;
  padding: 10px 16px;
  border: 3px solid var(--black);
  border-radius: 999px;
  background: linear-gradient(135deg, var(--yellow) 0%, var(--tangerine) 100%);
  color: var(--black);
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--black);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
  text-transform: uppercase;
}

.new-card-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: 5px 5px 0 var(--black);
}

.new-card-btn:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--black);
}

.grid {
  display: grid;
  gap: 8px;
  width: 100%;
}

.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); gap: 6px; }
.grid-5 { grid-template-columns: repeat(5, 1fr); gap: 6px; }

.cell {
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
  border: 3px solid var(--black);
  border-radius: 10px;
  background: var(--paper);
  background: color-mix(in srgb, var(--cell-tint, var(--paper)) 65%, transparent);
  cursor: pointer;
  font-family: 'Trebuchet MS', sans-serif;
  font-weight: 700;
  text-align: center;
  position: relative;
  transition: transform 0.15s ease;
  overflow: hidden;
  word-break: break-word;
  hyphens: auto;
  color: var(--black);
}

.cell:hover { transform: scale(1.04); }
.cell:focus-visible { outline: 4px solid var(--purple); outline-offset: 2px; }

.grid.locked .cell { cursor: default; pointer-events: none; }
.grid.locked .cell:not(.marked) { opacity: 0.55; }

.cell-text {
  display: block;
  width: 100%;
  line-height: 1.15;
  font-size: 14px;
  position: relative;
  z-index: 1;
}

.cell.marked {
  transform: rotate(var(--cell-rotate, -2deg)) scale(0.97);
  border-color: var(--pink);
  border-width: 5px;
  box-shadow: inset 0 0 0 2px var(--paper), 5px 5px 0 var(--black);
  animation: stamp 0.35s cubic-bezier(.34,1.56,.64,1);
}

.cell.marked .cell-text {
  text-decoration: line-through;
  text-decoration-thickness: 3px;
  text-decoration-color: var(--pink);
  opacity: 0.85;
}

.cell.marked::after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-12deg);
  font-family: 'Impact', sans-serif;
  font-size: 96px;
  color: var(--pink);
  -webkit-text-stroke: 4px var(--black);
  opacity: 0.55;
  pointer-events: none;
  z-index: 0;
  line-height: 1;
}

@keyframes stamp {
  0% { transform: rotate(0) scale(1.15); }
  60% { transform: rotate(var(--cell-rotate, -2deg)) scale(0.92); }
  100% { transform: rotate(var(--cell-rotate, -2deg)) scale(0.97); }
}

.cell.free {
  background: linear-gradient(135deg, var(--lime), var(--cyan));
  font-family: 'Impact', sans-serif;
  cursor: default;
}

.cell.free .cell-text {
  font-size: 18px !important;
  letter-spacing: 1px;
}

.cell.free::after { display: none; }

.celebration {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.55);
  z-index: 9999;
  padding: 24px;
  overflow: hidden;
}

.celebration.hidden { display: none; }

.celebration-text {
  font-family: 'Impact', 'Arial Black', sans-serif;
  font-size: clamp(36px, 11vw, 120px);
  color: var(--yellow);
  -webkit-text-stroke: 4px var(--black);
  text-shadow: 4px 4px 0 var(--pink), 8px 8px 0 var(--cyan);
  animation: bounce 0.55s ease infinite alternate;
  z-index: 1;
  letter-spacing: 3px;
  text-transform: uppercase;
  pointer-events: none;
  max-width: min(92vw, 900px);
  overflow-wrap: anywhere;
  word-break: break-word;
  text-align: center;
  line-height: 1.05;
}

@keyframes bounce {
  from { transform: scale(1) rotate(-4deg); }
  to { transform: scale(1.12) rotate(4deg); }
}

.confetti {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.confetti-piece {
  position: absolute;
  top: -30px;
  width: 14px;
  height: 14px;
  animation-name: fall;
  animation-timing-function: linear;
  animation-fill-mode: forwards;
}

.confetti-piece.circle { border-radius: 50%; }
.confetti-piece.triangle { clip-path: polygon(50% 0%, 0% 100%, 100% 100%); }
.confetti-piece.star {
  clip-path: polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
}

@keyframes fall {
  0%   { transform: translateY(-30px) rotate(0deg); opacity: 1; }
  100% { transform: translateY(110vh) rotate(var(--rotate, 720deg)); opacity: 0.9; }
}

@media (prefers-reduced-motion: reduce) {
  .title, .cell.marked, .celebration-text, .confetti-piece { animation: none !important; }
  .cell { transition: none; }
  .confetti { display: none; }
}

@media (max-width: 480px) {
  .main { padding: 8px 10px 80px; }
  .grid { gap: 5px; }
  .grid-4, .grid-5 { gap: 4px; }
  .cell { border-width: 2px; padding: 3px; border-radius: 8px; }
  .cell.marked { border-width: 3px; }
  .cell.marked::after { font-size: 64px; }
  .new-card-btn { font-size: 11px; padding: 7px 12px; letter-spacing: 0.5px; border-width: 2px; }
}

/* ---------- Multiplayer-only UI ---------- */

.view { animation: fade-in 0.18s ease; }
@keyframes fade-in { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

.landing-panel {
  background: var(--paper);
  border: 3px solid var(--black);
  border-radius: 18px;
  padding: 22px 22px 24px;
  box-shadow: 6px 6px 0 var(--black);
  margin: 0 auto 18px;
  max-width: 460px;
  text-align: center;
}

.panel-title {
  font-family: 'Impact', 'Arial Black', sans-serif;
  font-size: 26px;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 14px;
  color: var(--black);
}

#view-landing .size-selector { margin: 0 auto 16px; width: max-content; }

.primary-btn {
  font-family: 'Impact', 'Arial Black', sans-serif;
  font-size: 18px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 12px 24px;
  border: 3px solid var(--black);
  border-radius: 999px;
  background: linear-gradient(135deg, var(--pink) 0%, var(--tangerine) 100%);
  color: var(--paper);
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--black);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
  text-decoration: none;
  display: inline-block;
}

.primary-btn:hover:not(:disabled) {
  transform: translate(-1px, -1px);
  box-shadow: 6px 6px 0 var(--black);
}

.primary-btn:active:not(:disabled) {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--black);
}

.primary-btn:disabled { opacity: 0.55; cursor: progress; }

.join-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.join-form input,
.nickname-form input {
  font-family: 'Trebuchet MS', sans-serif;
  font-weight: 700;
  font-size: 18px;
  padding: 12px 16px;
  border: 3px solid var(--black);
  border-radius: 14px;
  background: var(--paper);
  color: var(--black);
  width: 100%;
  max-width: 320px;
  text-align: center;
  letter-spacing: 1px;
  box-shadow: inset 2px 2px 0 rgba(0, 0, 0, 0.06);
}

.join-form input:focus,
.nickname-form input:focus {
  outline: 4px solid var(--cyan);
  outline-offset: 2px;
}

.landing-divider {
  text-align: center;
  font-family: 'Impact', sans-serif;
  font-size: 18px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--black);
  opacity: 0.55;
  margin: 6px 0 14px;
}

.panel-blurb {
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 15px;
  color: var(--black);
  opacity: 0.75;
  margin-bottom: 14px;
  line-height: 1.4;
}

.game-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  position: relative;
  z-index: 10000;
}

.game-code-label {
  font-family: 'Impact', 'Arial Black', sans-serif;
  font-size: 16px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 8px 14px;
  border: 3px solid var(--black);
  border-radius: 999px;
  background: var(--yellow);
  color: var(--black);
  box-shadow: 3px 3px 0 var(--black);
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.game-code-label::after {
  content: '📋';
  margin-left: 6px;
  font-size: 14px;
}

.game-code-label:hover {
  transform: translate(-1px, -1px);
  box-shadow: 5px 5px 0 var(--black);
}

.game-code-label:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--black);
}

.ghost-btn {
  font-family: 'Arial Black', 'Helvetica Bold', system-ui, sans-serif;
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 8px 14px;
  border: 2px solid var(--black);
  border-radius: 999px;
  background: var(--paper);
  color: var(--black);
  cursor: pointer;
  text-decoration: none;
  box-shadow: 2px 2px 0 var(--black);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
  display: inline-block;
}

.ghost-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--black);
}

.ghost-btn:active {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0 var(--black);
}

.game-status {
  margin-top: 14px;
  text-align: center;
  font-family: 'Arial Black', sans-serif;
  font-size: 13px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--black);
  opacity: 0.7;
}

.cell:disabled {
  cursor: default;
  pointer-events: none;
}

/* Loading view */
#view-loading {
  text-align: center;
  padding: 40px 16px;
}

.spinner {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  border: 6px solid var(--black);
  border-top-color: var(--pink);
  border-right-color: var(--cyan);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-text {
  font-family: 'Impact', sans-serif;
  font-size: 18px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--black);
}

/* Error view */
#view-error {
  text-align: center;
  padding: 30px 16px;
  max-width: 460px;
  margin: 0 auto;
}

.error-text {
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 16px;
  margin-bottom: 22px;
  color: var(--black);
}

/* Nickname dialog */
.dialog {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.55);
  z-index: 9998;
  padding: 16px;
}

.dialog.hidden { display: none; }

.dialog-card {
  background: var(--paper);
  border: 4px solid var(--black);
  border-radius: 18px;
  padding: 24px;
  box-shadow: 8px 8px 0 var(--pink), 16px 16px 0 var(--cyan);
  max-width: 380px;
  width: 100%;
  text-align: center;
}

.nickname-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--black);
  color: var(--paper);
  font-family: 'Arial Black', sans-serif;
  font-size: 14px;
  letter-spacing: 0.5px;
  padding: 12px 20px;
  border-radius: 999px;
  border: 3px solid var(--pink);
  box-shadow: 4px 4px 0 var(--cyan);
  z-index: 9997;
  max-width: 88vw;
  text-align: center;
}

.toast.hidden { display: none; }

@media (prefers-reduced-motion: reduce) {
  .view, .spinner { animation: none !important; }
}

@media (max-width: 480px) {
  .landing-panel { padding: 18px 16px; box-shadow: 4px 4px 0 var(--black); }
  .panel-title { font-size: 22px; }
  .primary-btn { font-size: 16px; padding: 10px 18px; }
  .game-code-label { font-size: 13px; padding: 6px 10px; }
  .ghost-btn { font-size: 11px; padding: 6px 10px; }
  .dialog-card { padding: 18px; box-shadow: 5px 5px 0 var(--pink), 10px 10px 0 var(--cyan); }
}