:root {
  color-scheme: dark;
  --bg: #0f1012;
  --surface: #17191c;
  --surface-2: #24282b;
  --ink: #f3f0e8;
  --muted: #b5afa4;
  --line: rgba(243, 240, 232, 0.16);
  --panel: rgba(255, 255, 255, 0.06);
  --tile: #ece4d4;
  --tile-ink: #1f2325;
  --accent: #5dc6a8;
  --amber: #d9a84c;
  --bad: #dfe6df;
  --shadow: rgba(0, 0, 0, 0.35);
  font-family: Geist, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100svh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 18% 8%, rgba(93, 198, 168, 0.17), transparent 24rem),
    radial-gradient(circle at 86% 86%, rgba(217, 168, 76, 0.1), transparent 24rem),
    linear-gradient(135deg, rgba(255, 255, 255, 0.036) 0 1px, transparent 1px 26px),
    var(--bg);
}

button {
  font: inherit;
  color: inherit;
}

.shell {
  width: min(1240px, calc(100% - 32px));
  min-height: 100svh;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(320px, 680px) minmax(220px, 280px);
  align-items: center;
  gap: clamp(20px, 3.2vw, 44px);
  padding: 28px 0 34px;
}

.game,
.panel,
.community-panel {
  animation: rise 480ms ease both;
}

.game {
  position: relative;
  grid-column: 2;
  display: grid;
  gap: 16px;
  width: 100%;
  max-width: 680px;
  margin: 0 auto;
}

.panel {
  grid-column: 1;
  grid-row: 1;
  width: 100%;
  max-width: 280px;
  margin: 0;
  animation-delay: 90ms;
}

.community-panel {
  grid-column: 3;
  grid-row: 1;
  width: 100%;
  max-width: 280px;
  margin: 0;
  animation-delay: 130ms;
}

.topbar,
.stats,
.section-head,
.controls {
  display: flex;
  align-items: center;
}

.topbar,
.section-head,
.controls {
  justify-content: space-between;
  gap: 16px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: clamp(2.4rem, 8vw, 5.4rem);
  line-height: 0.86;
  letter-spacing: 0;
  font-weight: 900;
}

h2 {
  font-size: 0.86rem;
  letter-spacing: 0;
  text-transform: uppercase;
}

.stats {
  gap: 10px;
}

.stats div {
  min-width: 78px;
  padding: 10px 12px 11px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.035));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.stats span,
.section-head span {
  display: block;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.stats strong {
  display: block;
  margin-top: 3px;
  font-size: 1.22rem;
}

.board-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  padding: clamp(10px, 1.4vw, 16px);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.04)),
    var(--surface-2);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow:
    0 28px 90px rgba(0, 0, 0, 0.42),
    inset 0 1px 0 rgba(255, 255, 255, 0.09);
  overflow: hidden;
  touch-action: none;
}

.board {
  --board-gap: 11px;
  --size: 5;
  --tracks: 4;
  position: relative;
  display: grid;
  grid-template-columns: repeat(var(--size), 1fr);
  grid-template-rows: repeat(var(--size), 1fr);
  gap: var(--board-gap);
  width: 100%;
  height: 100%;
}

.tile-layer,
.burst-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.tile-layer {
  z-index: 2;
}

.burst-layer {
  z-index: 4;
}

.cell {
  position: relative;
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(0, 0, 0, 0.1)),
    #1f2326;
  border: 1px solid rgba(255, 255, 255, 0.075);
  overflow: hidden;
}

.cell::after {
  content: "";
  position: absolute;
  inset: 12%;
  border: 1px dashed rgba(255, 255, 255, 0.07);
  border-radius: 7px;
}

.tile {
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  place-items: center;
  width: calc((100% - (var(--board-gap) * var(--tracks))) / var(--size));
  height: calc((100% - (var(--board-gap) * var(--tracks))) / var(--size));
  border-radius: 8px;
  color: var(--tile-ink);
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.62), transparent 48%),
    var(--tile);
  border: 1px solid rgba(255, 255, 255, 0.28);
  box-shadow:
    0 8px 18px rgba(0, 0, 0, 0.16),
    inset 0 -9px 0 rgba(0, 0, 0, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.36);
  font-size: clamp(1.05rem, 6.5vw, 3.2rem);
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
  will-change: top, left, transform, opacity;
  transform: scale(1);
  transition:
    top 240ms cubic-bezier(0.16, 0.9, 0.22, 1),
    left 240ms cubic-bezier(0.16, 0.9, 0.22, 1),
    opacity 120ms ease,
    transform 170ms cubic-bezier(0.18, 0.88, 0.24, 1),
    background 180ms ease;
  animation: pop 190ms cubic-bezier(0.18, 0.88, 0.24, 1.18) both;
}

.tile.no-transition {
  transition: none;
}

.tile.consuming {
  z-index: 3;
  opacity: 0;
  transform: scale(0.78);
}

.tile.sliding {
  z-index: 4;
  box-shadow:
    0 18px 36px rgba(0, 0, 0, 0.24),
    inset 0 -9px 0 rgba(0, 0, 0, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.34);
  transform: scale(1.025);
}

.tile.merge-born {
  z-index: 5;
  animation: mergePop 300ms cubic-bezier(0.16, 1.2, 0.3, 1) both;
}

.tile[data-status="loose"] {
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.66), transparent 47%),
    linear-gradient(180deg, #ffe9a8, #e1bb58);
}

.tile[data-status="linked"] {
  color: #0f211c;
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.58), transparent 47%),
    linear-gradient(180deg, #83dcc3, #39b992);
  box-shadow:
    0 0 0 3px rgba(93, 198, 168, 0.28),
    0 16px 34px rgba(93, 198, 168, 0.18),
    inset 0 -9px 0 rgba(0, 0, 0, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.tile[data-status="clutter"] {
  color: rgba(31, 35, 37, 0.72);
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.48), transparent 48%),
    linear-gradient(180deg, #eef4ee, #cbd5cd);
}

.tile.selected {
  z-index: 6;
  box-shadow:
    0 0 0 4px rgba(243, 240, 232, 0.8),
    0 0 0 7px rgba(93, 198, 168, 0.42),
    0 18px 36px rgba(0, 0, 0, 0.25),
    inset 0 -9px 0 rgba(0, 0, 0, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.36);
  transform: scale(0.97);
}

.word-burst {
  position: absolute;
  display: grid;
  place-items: center;
  width: calc((100% - (var(--board-gap) * var(--tracks))) / var(--size));
  height: calc((100% - (var(--board-gap) * var(--tracks))) / var(--size));
  border-radius: 8px;
  color: var(--ink);
  background: rgba(93, 198, 168, 0.18);
  border: 1px solid rgba(93, 198, 168, 0.55);
  font-size: clamp(0.7rem, 3vw, 1.6rem);
  font-weight: 900;
  text-transform: uppercase;
  animation: wordBurst 620ms ease both;
}

.merge-ripple {
  position: absolute;
  width: calc((100% - (var(--board-gap) * var(--tracks))) / var(--size));
  height: calc((100% - (var(--board-gap) * var(--tracks))) / var(--size));
  border: 2px solid rgba(93, 198, 168, 0.72);
  border-radius: 8px;
  box-shadow: 0 0 22px rgba(93, 198, 168, 0.2);
  animation: mergeRipple 420ms ease-out both;
}

.banner {
  position: absolute;
  inset: clamp(10px, 1.4vw, 16px);
  z-index: 8;
  display: grid;
  place-content: center;
  gap: 8px;
  text-align: center;
  border-radius: 8px;
  background: rgba(15, 16, 18, 0.9);
  backdrop-filter: blur(10px);
  animation: fade 220ms ease both;
}

.banner strong,
.banner span {
  position: relative;
  z-index: 1;
}

.banner strong {
  font-size: clamp(2rem, 8vw, 5rem);
  line-height: 0.95;
  font-weight: 900;
}

.banner span {
  color: var(--muted);
}

.banner-action {
  position: relative;
  z-index: 1;
  justify-self: center;
  min-height: 42px;
  margin-top: 8px;
  padding: 0 18px;
  border: 1px solid rgba(93, 198, 168, 0.55);
  border-radius: 8px;
  color: #0f211c;
  background: var(--accent);
  cursor: pointer;
  font-weight: 900;
}

.banner-action:hover {
  filter: brightness(1.07);
}

.hidden {
  display: none;
}

.quit-button {
  position: absolute;
  top: -6px;
  left: -54px;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.045));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
  cursor: pointer;
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
}

.quit-button:hover {
  color: var(--ink);
  border-color: rgba(217, 168, 76, 0.55);
}

.controls button {
  position: relative;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.045));
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
  transition:
    transform 130ms ease,
    border-color 130ms ease,
    background 130ms ease;
}

.controls button:hover {
  border-color: rgba(93, 198, 168, 0.8);
  background: rgba(93, 198, 168, 0.12);
  transform: translateY(-1px);
}

.controls button:disabled {
  cursor: not-allowed;
  opacity: 0.42;
  transform: none;
}

.ghost {
  min-width: 108px;
  padding: 0 18px;
  font-weight: 800;
}

.ghost .control-count {
  color: var(--accent);
}

.control-icon {
  display: none;
  width: 25px;
  height: 25px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.4;
}

.control-count {
  margin-left: 4px;
}

.sound-toggle {
  min-width: 104px;
  padding: 0 14px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 900;
}

.sound-toggle[aria-pressed="true"] {
  color: var(--accent);
  border-color: rgba(93, 198, 168, 0.48);
}

.sound-off-icon {
  display: none;
}

.rules,
.community {
  display: grid;
  gap: 12px;
  align-items: start;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.065), rgba(255, 255, 255, 0.028));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.07);
  font-size: 0.94rem;
  line-height: 1.38;
}

.community {
  gap: 8px;
  padding: 10px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  box-shadow: none;
}

.rules p {
  max-width: none;
}

.community p {
  color: var(--muted);
  line-height: 1.35;
}

.community-prompt {
  padding: 0 8px;
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.04em;
}

.reaction-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
}

.reaction-button {
  min-height: 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 4px 8px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  transition:
    transform 130ms ease,
    border-color 130ms ease,
    background 130ms ease;
}

.reaction-button:hover {
  border-color: rgba(93, 198, 168, 0.55);
  background: rgba(93, 198, 168, 0.07);
  transform: translateY(-1px);
}

.reaction-button:disabled {
  cursor: default;
  opacity: 0.74;
  transform: none;
}

.reaction-button.voted {
  border-color: rgba(93, 198, 168, 0.62);
  background: rgba(93, 198, 168, 0.08);
}

.reaction-copy {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.reaction-symbol {
  font-size: 1rem;
  line-height: 1;
}

.reaction-button strong {
  color: var(--muted);
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
}

.reaction-status {
  min-height: 0;
  font-size: 0.74rem;
  font-weight: 800;
}

.reaction-status:empty {
  display: none;
}

.legend {
  display: grid;
  gap: 10px;
}

.legend span {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  font-size: 0.84rem;
  font-weight: 800;
}

.swatch {
  width: 18px;
  height: 18px;
  border-radius: 5px;
  box-shadow:
    inset 0 -3px 0 rgba(0, 0, 0, 0.11),
    inset 0 1px 0 rgba(255, 255, 255, 0.32);
}

.swatch-clutter {
  background: #dfe6df;
}

.swatch-answer {
  background: #f3d179;
}

.swatch-link {
  background: var(--accent);
}

.quit-modal {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(15, 16, 18, 0.72);
  backdrop-filter: blur(10px);
}

.quit-modal.hidden {
  display: none;
}

.quit-dialog {
  width: min(360px, 100%);
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(36, 40, 43, 0.96), rgba(23, 25, 28, 0.96));
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
}

.quit-dialog p {
  margin-top: 8px;
  color: var(--muted);
  line-height: 1.4;
}

.mode-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 18px;
}

.mode-button {
  min-height: 88px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.085), rgba(255, 255, 255, 0.035));
  cursor: pointer;
  text-align: left;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.mode-button:hover {
  border-color: rgba(93, 198, 168, 0.55);
  background: rgba(93, 198, 168, 0.12);
}

.mode-button strong,
.mode-button span {
  display: block;
}

.mode-button strong {
  font-size: 1rem;
}

.mode-button span {
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 800;
}

.quit-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 18px;
}

.quit-actions button {
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.07);
  cursor: pointer;
  font-weight: 800;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
}

@keyframes pop {
  from {
    opacity: 0;
    transform: scale(0.72);
  }
}

@keyframes mergePop {
  0% {
    opacity: 0;
    transform: scale(0.46) rotate(-1deg);
  }

  62% {
    opacity: 1;
    transform: scale(1.12) rotate(1deg);
  }

  100% {
    opacity: 1;
    transform: scale(1) rotate(0);
  }
}

@keyframes mergeRipple {
  0% {
    opacity: 0.78;
    transform: scale(0.7);
  }

  100% {
    opacity: 0;
    transform: scale(1.22);
  }
}

@keyframes wordBurst {
  0% {
    opacity: 0;
    transform: translateY(0) scale(0.82);
  }

  30% {
    opacity: 1;
    transform: translateY(-4px) scale(1.06);
  }

  100% {
    opacity: 0;
    transform: translateY(-26px) scale(0.94);
  }
}

@keyframes fade {
  from {
    opacity: 0;
  }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(10px);
  }
}

@media (max-width: 860px) {
  .shell {
    grid-template-columns: 1fr;
    width: min(760px, calc(100% - 32px));
    padding: 20px 0 28px;
  }

  .game,
  .panel,
  .community-panel {
    grid-column: 1;
    grid-row: auto;
    max-width: 680px;
    margin: 0 auto;
  }

  .topbar {
    align-items: flex-end;
    padding-right: 54px;
  }

  .quit-button {
    top: 0;
    right: 0;
    left: auto;
  }

  .stats div {
    min-width: 72px;
  }
}

@media (max-width: 520px) {
  .shell {
    width: min(100% - 20px, 440px);
    gap: 14px;
    padding: 16px 0 calc(24px + env(safe-area-inset-bottom));
  }

  .topbar {
    align-items: stretch;
    flex-direction: column;
  }

  .controls {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    align-items: center;
    width: min(100%, 320px);
    margin: 0 auto;
    padding: 10px;
    border: 1px solid rgba(243, 240, 232, 0.1);
    border-radius: 30px;
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.035)),
      rgba(236, 228, 212, 0.07);
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 0.1),
      0 16px 42px rgba(0, 0, 0, 0.22);
  }

  .controls button {
    display: grid;
    place-items: center;
    min-width: 0;
    min-height: 66px;
    padding: 0;
    border-radius: 18px;
    color: var(--ink);
    background: linear-gradient(180deg, rgba(236, 228, 212, 0.22), rgba(236, 228, 212, 0.12));
  }

  .control-label {
    display: none;
  }

  .control-icon {
    display: block;
  }

  .control-count {
    position: absolute;
    top: -10px;
    right: -6px;
    display: grid;
    place-items: center;
    min-width: 28px;
    height: 28px;
    margin: 0;
    padding: 0 7px;
    border-radius: 8px;
    color: var(--ink);
    background: rgba(31, 35, 37, 0.82);
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.22);
    font-size: 0.92rem;
    font-weight: 900;
  }

  .sound-toggle[aria-pressed="true"] .sound-on-icon,
  .sound-toggle[aria-pressed="false"] .sound-off-icon {
    display: block;
  }

  .delete-control {
    display: grid;
  }

  .sound-toggle[aria-pressed="false"] .sound-on-icon,
  .sound-toggle[aria-pressed="true"] .sound-off-icon,
  .quit-button {
    display: none;
  }

  .stats {
    width: 100%;
  }

  .stats div {
    flex: 1;
  }

  .board-wrap {
    padding: 10px;
  }

  .board {
    --board-gap: 6px;
  }

  .rules {
    grid-template-columns: 1fr;
    padding: 14px;
  }

  .community {
    padding: 14px;
    border-radius: 8px;
  }

  .reaction-button {
    min-height: 34px;
    gap: 8px;
    padding: 4px 8px;
  }
}