:root {
  --bg: #f7f4ef;
  --surface: #efeae2;
  --text: #1c1a17;
  --text-rgb: 28, 26, 23;
  --text-dim: #6b655c;
  --border: #ddd5c8;
  --overlay-bg: rgba(247, 244, 239, 0.96);
  --error-bg: rgba(204, 0, 0, 0.08);
  --error-text: #c00;
  --accent: #a29bfe;
  --accent-primary: #7c6fde;
  --accent-bg: rgba(162, 155, 254, 0.14);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --shadow-soft: 0 8px 28px rgba(28, 26, 23, 0.08);
  --font: "Helvetica Neue", Helvetica, Arial, "PingFang SC", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --bg: #1c1b19;
    --surface: #2a2824;
    --text: #f3efe8;
    --text-rgb: 243, 239, 232;
    --text-dim: #a8a196;
    --border: #3d3a34;
    --overlay-bg: rgba(28, 27, 25, 0.96);
    --error-bg: rgba(255, 90, 90, 0.14);
    --error-text: #ff8a80;
    --accent-bg: rgba(162, 155, 254, 0.18);
    --shadow-soft: 0 8px 28px rgba(0, 0, 0, 0.35);
  }
}
[data-theme='dark'] {
  --bg: #1c1b19;
  --surface: #2a2824;
  --text: #f3efe8;
  --text-rgb: 243, 239, 232;
  --text-dim: #a8a196;
  --border: #3d3a34;
  --overlay-bg: rgba(28, 27, 25, 0.96);
  --error-bg: rgba(255, 90, 90, 0.14);
  --error-text: #ff8a80;
  --accent-bg: rgba(162, 155, 254, 0.18);
  --shadow-soft: 0 8px 28px rgba(0, 0, 0, 0.35);
}

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

:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 2px;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  height: 100dvh;
  height: 100vh;
  width: 100vw;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: none;
  transition:
    background-color 0.2s,
    color 0.2s;
  padding: env(safe-area-inset-top, 0) env(safe-area-inset-right, 0) env(safe-area-inset-bottom, 0)
    env(safe-area-inset-left, 0);
}

.no-select {
  -webkit-user-select: none;
  user-select: none;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  width: 100%;
  max-width: 400px;
  padding: 20px 16px;
  animation: fadeIn 0.2s ease-out;
}
.screen:focus {
  outline: none;
}
#title-screen {
  position: relative;
  overflow: hidden;
}
.screen.hidden,
.hidden {
  display: none;
}
.title-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.title-bg .drift {
  position: absolute;
  font-size: 2rem;
  opacity: 0.06;
  font-weight: 200;
  color: var(--text);
}
.title-bg .drift-a {
  animation: driftA 7s ease-in-out infinite;
}
.title-bg .drift-b {
  animation: driftB 9s ease-in-out infinite;
}
@keyframes driftA {
  0%,
  100% {
    transform: translate(0, 0) rotate(0deg);
  }
  50% {
    transform: translate(15px, -10px) rotate(12deg);
  }
}
@keyframes driftB {
  0%,
  100% {
    transform: translate(0, 0) rotate(0deg);
  }
  50% {
    transform: translate(-12px, 15px) rotate(-8deg);
  }
}
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.logo-mark {
  color: var(--text);
  margin-bottom: -4px;
}
h1 {
  font-size: 2rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: none;
  line-height: 1.15;
}
.subtitle {
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.28em;
  text-transform: uppercase;
  margin-top: 6px;
  margin-bottom: 8px;
  font-weight: 500;
}
.sub {
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 0.15em;
}

/* Picker */
.pick-section {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.pick-header {
  font-size: 0.8rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
  text-align: center;
}
.pick-header.active {
  color: var(--text);
  font-weight: 600;
}
.emoji-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
  width: 100%;
  max-width: 300px;
}
.emoji-grid .e {
  width: 100%;
  aspect-ratio: 1;
  min-height: 44px;
  font-size: 1.4rem;
  border: 1px solid var(--border);
  background: var(--bg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
  border-radius: var(--radius-sm);
  color: var(--text);
  touch-action: manipulation;
}
.emoji-grid .e:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 2px;
}
.emoji-grid .e:hover {
  border-color: var(--text-dim);
}
.emoji-grid .e:active {
  transform: scale(0.9);
}
.emoji-grid .e.sel {
  border-color: var(--text);
  background: var(--surface);
}
.cat-tabs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
  width: 100%;
  max-width: 300px;
  margin-bottom: 10px;
}
.cat-tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg);
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
  padding: 4px 2px;
  touch-action: manipulation;
}
.cat-tab:hover {
  border-color: var(--text-dim);
}
.cat-tab.active {
  background: var(--accent-bg);
  border-color: var(--accent);
}
.cat-tab .cat-icon {
  font-size: 1.4rem;
  line-height: 1;
}
.cat-tab .cat-name {
  font-size: 0.4rem;
  color: var(--text-dim);
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}
.cat-tab.active .cat-name {
  color: var(--accent-primary);
}
.emoji-grid .e.used {
  opacity: 0.35;
  cursor: not-allowed;
}
.emoji-grid .e.just-picked {
  animation: pick-pulse 0.25s ease-out;
}
@keyframes pick-pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.25);
  }
  100% {
    transform: scale(1);
  }
}

.pick-preview {
  display: flex;
  gap: 20px;
  align-items: center;
  justify-content: center;
  margin-top: 4px;
}
.ready-area {
  width: 100%;
  max-width: 300px;
}
.ready-row {
  display: flex;
  gap: 8px;
}
.ready-player {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 10px;
  background: var(--surface);
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  transition: all 0.15s;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}
.ready-player.active {
  border-color: var(--text);
}
.ready-player.ready {
  border-color: var(--accent);
  background: var(--accent-bg);
}
.ready-player .rp-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text-dim);
}
.ready-player .rp-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-sm);
  transform: scaleX(-1);
}
.ready-player .rp-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
}
.ready-player .rp-status {
  display: none;
}

.btn-row {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}
.btn {
  padding: 10px 24px;
  border: 1px solid var(--text);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: 0.1em;
  transition: all 0.15s;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  touch-action: manipulation;
}
.btn:hover {
  background: var(--surface);
  border-color: var(--text-dim);
}
.btn:active {
  transform: scale(0.97);
}
.btn:disabled {
  opacity: 0.25;
  cursor: default;
  background: transparent;
  color: var(--text-dim);
  border-color: var(--border);
}
.btn-sm {
  padding: 8px 16px;
  font-size: 0.75rem;
}
.btn-ghost {
  border-color: var(--border);
  color: var(--text-dim);
}
.btn-ghost:hover {
  background: var(--surface);
  color: var(--text);
  border-color: var(--text-dim);
}
.btn-primary {
  background: var(--accent-primary);
  color: #fff;
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-soft);
  letter-spacing: 0.12em;
}
.btn-hero {
  width: 100%;
  min-height: 52px;
  font-size: 0.85rem;
  border-radius: var(--radius-md);
  background: var(--accent-primary);
  color: #fff;
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-soft);
  letter-spacing: 0.14em;
}
.btn-hero:hover {
  opacity: 0.94;
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}
.btn-quiet {
  width: 100%;
  min-height: 48px;
  border-radius: var(--radius-md);
  border-color: var(--border);
  background: transparent;
  color: var(--text);
  font-weight: 500;
}
.btn-quiet:hover {
  background: var(--surface);
  border-color: var(--text-dim);
}
.btn-primary:hover {
  opacity: 0.9;
}
.btn-success {
  background: #00b894;
  color: #fff;
  border-color: #00b894;
}
.btn .spinner {
  width: 12px;
  height: 12px;
  border: 1.5px solid var(--border);
  border-top-color: var(--text);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 6px;
}

.online-link {
  font-size: 0.75rem;
  color: var(--text-dim);
  cursor: pointer;
  letter-spacing: 0.05em;
  margin-top: 4px;
  background: none;
  border: none;
  padding: 8px 16px;
  min-height: 44px;
  display: flex;
  align-items: center;
}
.online-link:hover {
  color: var(--text);
}
.online-link:active {
  opacity: 0.7;
}

.waiting {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 8px;
}
.spinner {
  width: 12px;
  height: 12px;
  border: 1.5px solid var(--border);
  border-top-color: var(--text);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.error-msg {
  color: var(--error-text);
  font-size: 0.75rem;
  text-align: center;
  background: var(--error-bg);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
}

/* Game — Tab Bar */
.game-players {
  position: relative;
  width: 100%;
  display: flex;
  background: var(--surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  margin-bottom: 8px;
  transition:
    background-color 0.2s,
    border-color 0.2s;
}
.game-tab {
  flex: 1;
  text-align: center;
  font-size: 0.7rem;
  color: var(--text-dim);
  border-right: 1px solid var(--border);
  transition: all 0.15s;
  padding: 0;
}
.game-tab:last-child {
  border-right: none;
}
.game-tab .gt-label {
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 6px 0;
  background: var(--border);
  color: var(--text-dim);
}
.game-tab.active .gt-label {
  background: var(--accent-primary);
  color: #fff;
}
.game-tab .gt-body {
  padding: 10px 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.game-tab .gt-emoji {
  font-size: 1.6rem;
  line-height: 1;
}
.game-tab .gt-emoji img {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  object-fit: cover;
  transform: scaleX(-1);
  vertical-align: middle;
}
.game-tab .gt-val {
  font-size: 1.1rem;
  font-weight: 300;
}
.game-tab.active .gt-val {
  font-weight: 600;
}

.board-wrap {
  position: relative;
  width: min(85vw, 55dvh, 55vh, 400px);
  height: min(85vw, 55dvh, 55vh, 400px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}
.board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  gap: 0;
  width: 100%;
  height: 100%;
  position: relative;
  overflow: visible;
}
.board-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
.board-lines .v {
  position: absolute;
  width: 2px;
  background: var(--border);
  top: -10px;
  bottom: -10px;
}
.board-lines .v:nth-child(1) {
  left: 33.33%;
  transform: translateX(-50%);
}
.board-lines .v:nth-child(2) {
  left: 66.66%;
  transform: translateX(-50%);
}
.board-lines .h {
  position: absolute;
  height: 2px;
  background: var(--border);
  left: -10px;
  right: -10px;
}
.board-lines .h:nth-child(3) {
  top: 33.33%;
  transform: translateY(-50%);
}
.board-lines .h:nth-child(4) {
  top: 66.66%;
  transform: translateY(-50%);
}
.cell {
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.12s;
  -webkit-tap-highlight-color: transparent;
  overflow: hidden;
  z-index: 1;
  border-radius: 4px;
  border: none;
  outline: none;
  font-family: inherit;
  color: inherit;
  padding: 0;
  touch-action: manipulation;
}
.cell:hover:not(.m) {
  background: rgba(var(--text-rgb), 0.06);
}
.cell.shake {
  animation: shake 0.3s ease-in-out;
}
@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-4px);
  }
  75% {
    transform: translateX(4px);
  }
}
.cell.m {
  cursor: default;
}
.cell .ce {
  font-size: 2.2rem;
  opacity: 0;
  transform: scale(0.6);
  transition:
    opacity 0.15s,
    transform 0.15s cubic-bezier(0.34, 1.56, 0.64, 1);
  font-weight: 200;
}
.cell.m .ce {
  opacity: 1;
  transform: scale(1);
}
.cell img {
  width: 80%;
  height: 80%;
  object-fit: cover;
  border-radius: 4px;
  opacity: 0;
  transform: scale(0.6) scaleX(-1);
  transition:
    opacity 0.15s,
    transform 0.15s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.cell.m img {
  opacity: 1;
  transform: scale(1) scaleX(-1);
}
.cell.win {
  background: var(--accent-bg);
  box-shadow: 0 0 16px 3px rgba(162, 155, 254, 0.3);
  animation: winPulse 1.5s ease-in-out infinite;
}
.snap-hidden {
  position: absolute;
  left: -9999px;
  top: -9999px;
  width: 320px;
  height: 320px;
  opacity: 0;
  pointer-events: none;
}
.cell.threat {
  box-shadow: 0 0 10px 2px rgba(162, 155, 254, 0.25);
}
@keyframes winPulse {
  0%,
  100% {
    box-shadow: 0 0 16px 3px rgba(162, 155, 254, 0.3);
  }
  50% {
    box-shadow: 0 0 24px 6px rgba(162, 155, 254, 0.45);
  }
}

#win-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 5;
}

.ctrls {
  display: flex;
  gap: 8px;
  margin-top: 8px;
  width: 100%;
  max-width: 300px;
  align-items: center;
}
.ctrls .btn {
  flex: 1;
}
.network-banner {
  position: fixed;
  top: env(safe-area-inset-top, 0px);
  left: 0;
  right: 0;
  background: #ff6b6b;
  color: #fff;
  text-align: center;
  padding: 6px;
  font-size: 0.75rem;
  z-index: 500;
  letter-spacing: 0.05em;
}

.theme-toggle {
  position: fixed;
  top: max(env(safe-area-inset-top, 0px), 10px);
  right: 10px;
  z-index: 100;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.7rem;
  cursor: pointer;
  padding: 6px 12px;
  min-height: 36px;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: all 0.15s;
  color: var(--text);
}
.theme-toggle:hover {
  background: var(--bg);
}

.result-overlay {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) translateY(100%);
  background: var(--bg);
  padding: 16px 24px max(20px, env(safe-area-inset-bottom, 0px));
  border-radius: 16px 16px 0 0;
  border: 1px solid var(--border);
  border-bottom: none;
  box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.15);
  z-index: 200;
  width: 100%;
  max-width: 400px;
  text-align: center;
  transition: transform 0.3s ease-out;
}
.result-overlay.show {
  transform: translateX(-50%) translateY(0);
}
.board-wrap.pulse {
  animation: boardPulse 0.4s ease-out;
}
.diff-chip {
  display: flex;
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}
.diff-chip-item {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 12px;
  border: none;
  border-right: 1px solid var(--border);
  background: var(--bg);
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}
.diff-chip-item:last-child {
  border-right: none;
}
.diff-chip-item.active {
  background: var(--accent-primary);
  color: #fff;
}
.diff-emoji {
  font-size: 1rem;
  line-height: 1;
}
.diff-text {
  letter-spacing: 0.05em;
}
@keyframes boardPulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.03);
  }
  100% {
    transform: scale(1);
  }
}

.result-overlay.panel {
  background: var(--overlay-bg);
  border-radius: var(--radius-lg);
  padding: 28px 24px 22px;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--border);
}
.result-overlay h2 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}
.result-overlay .big {
  font-size: 2.5rem;
  margin-bottom: 6px;
}
.result-overlay .big img {
  width: 60px;
  height: 60px;
  border-radius: 8px;
  object-fit: cover;
  transform: scaleX(-1);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .cell.win {
    animation: none;
    box-shadow: 0 0 16px 3px rgba(162, 155, 254, 0.3);
  }
}


/* Option 1 — editorial home + result */
.title-lede {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--text-dim);
  text-align: center;
  max-width: 17rem;
  margin: 0 0 1.5rem;
}
.mode-stack {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  width: 100%;
  max-width: 17.5rem;
}
.title-note {
  margin-top: 1.25rem;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  text-align: center;
  max-width: 16rem;
  line-height: 1.5;
}
.logo-mark {
  width: 64px;
  height: 64px;
  opacity: 0.92;
}
.result-overlay.panel {
  padding: 28px 22px max(22px, env(safe-area-inset-bottom, 0px));
}
.result-overlay h2 {
  font-size: 1.35rem;
  letter-spacing: 0.06em;
  font-weight: 500;
  margin-bottom: 4px;
}
.result-overlay .big {
  font-size: 3rem;
  margin-bottom: 8px;
  line-height: 1;
}
.result-overlay .big img {
  width: 72px;
  height: 72px;
  border-radius: 12px;
}
.result-line {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 18px;
  letter-spacing: 0.04em;
}
.result-actions {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  width: 100%;
  max-width: 17.5rem;
  margin: 0 auto;
}


/* Paper grain + denser mark (option 1 polish) */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.045;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px 180px;
}
[data-theme='dark'] body::before {
  opacity: 0.06;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) body::before {
    opacity: 0.06;
  }
}
.logo-mark {
  width: 64px !important;
  height: 64px !important;
  opacity: 0.95;
}
.logo-mark path {
  stroke-width: 3.2;
}
.logo-mark path:nth-child(2) {
  opacity: 0.88;
}
.logo-mark path:nth-child(4) {
  opacity: 0.82;
}
.title-bg .drift {
  opacity: 0.04;
}


.top-toggles {
  position: fixed;
  top: max(env(safe-area-inset-top, 0px), 10px);
  right: 10px;
  z-index: 100;
  display: flex;
  gap: 6px;
}
.top-toggles .theme-toggle {
  position: static;
  min-width: 44px;
  min-height: 36px;
  justify-content: center;
  padding: 6px 10px;
}