#content-play {
  background-color: var(--bg-offwhite);
  overflow-y: auto;
}
.play-shell {
  position: relative;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 24px 40px;
}
.play-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 22px;
  position: relative;
  z-index: 4;
}
.play-eyebrow {
  font-family: "Space Mono", monospace;
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--primary-blue);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.play-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-dark);
  letter-spacing: -0.5px;
  margin: 0 0 6px;
}
.play-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  max-width: 520px;
  line-height: 1.6;
  margin: 0;
}

.game-stage {
  position: relative;
  width: 100%;
  max-width: 560px;
  margin: 0 auto;
  padding: 28px 24px 24px;
  border-radius: 20px;
  background:
    radial-gradient(
      ellipse at top,
      rgba(107, 139, 255, 0.08),
      transparent 60%
    ),
    var(--bg-card);
  border: 1px solid var(--border-light);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}
[data-theme="dark"] .game-stage {
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}
.game-statusbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 460px;
  gap: 12px;
}
.game-stat {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 8px 14px;
  background: var(--bg-card-alt);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  min-width: 90px;
}
.game-stat-label {
  font-family: "Space Mono", monospace;
  font-size: 9px;
  letter-spacing: 1.4px;
  color: var(--text-muted);
  text-transform: uppercase;
}
.game-stat-value {
  font-family: "Space Mono", monospace;
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-blue);
  line-height: 1;
}
.game-status-text {
  flex: 1;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  font-family: "Space Mono", monospace;
  letter-spacing: 0.5px;
  padding: 8px 12px;
  background: var(--bg-card-alt);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    color 0.3s ease,
    border-color 0.3s ease;
}
.game-status-text.status-watch {
  color: var(--primary-blue);
  border-color: var(--primary-blue);
}
.game-status-text.status-input {
  color: #16a34a;
  border-color: #16a34a;
}
.game-status-text.status-error {
  color: #dc2626;
  border-color: #dc2626;
}

.pads-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 14px;
  width: 100%;
  max-width: 380px;
  aspect-ratio: 1 / 1;
}
.pad {
  position: relative;
  border-radius: 16px;
  border: 1px solid var(--border-light);
  cursor: pointer;
  overflow: hidden;
  transition:
    transform 0.12s ease,
    box-shadow 0.3s ease,
    filter 0.18s ease;
  will-change: transform, filter;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.pad--green {
  background: linear-gradient(135deg, #1f6f43, #14432a);
}
.pad--red {
  background: linear-gradient(135deg, #8e2a2a, #5a1a1a);
}
.pad--yellow {
  background: linear-gradient(135deg, #8a6b1a, #5c4710);
}
.pad--blue {
  background: linear-gradient(135deg, #1d3a8a, #112456);
}
[data-theme="dark"] .pad--green {
  background: linear-gradient(135deg, #14532d, #0a2e18);
}
[data-theme="dark"] .pad--red {
  background: linear-gradient(135deg, #5a1a1a, #3a0f0f);
}
[data-theme="dark"] .pad--yellow {
  background: linear-gradient(135deg, #5c4710, #3a2c08);
}
[data-theme="dark"] .pad--blue {
  background: linear-gradient(135deg, #1e3a8a, #0f1e4a);
}
.pad.lit {
  filter: brightness(1.55) saturate(1.2);
  transform: scale(0.97);
  box-shadow:
    0 0 24px var(--pad-glow),
    inset 0 0 16px rgba(255, 255, 255, 0.25);
}
.pad--green.lit {
  --pad-glow: rgba(34, 197, 94, 0.65);
}
.pad--red.lit {
  --pad-glow: rgba(239, 68, 68, 0.65);
}
.pad--yellow.lit {
  --pad-glow: rgba(234, 179, 8, 0.65);
}
.pad--blue.lit {
  --pad-glow: rgba(59, 130, 246, 0.65);
}
.pad:hover:not(.disabled) {
  filter: brightness(1.15);
}
.pad.disabled {
  cursor: not-allowed;
  opacity: 0.85;
}
.pad.pressed {
  transform: scale(0.96);
}

.round-indicator {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--border-light);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.1);
  z-index: 3;
  pointer-events: none;
}
.round-indicator .ri-label {
  font-family: "Space Mono", monospace;
  font-size: 8px;
  letter-spacing: 1.2px;
  color: var(--text-muted);
  text-transform: uppercase;
}
.round-indicator .ri-value {
  font-family: "Space Mono", monospace;
  font-size: 22px;
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1;
  margin-top: 2px;
}

.game-controls {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}
.game-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  font-size: 12px;
  font-weight: 600;
  font-family: "Inter", sans-serif;
  color: #ffffff;
  background: var(--primary-blue);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(24, 62, 235, 0.25);
}
.game-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(24, 62, 235, 0.35);
}
.game-btn.game-btn--ghost {
  background: var(--bg-card);
  color: var(--text-dark);
  border: 1px solid var(--border-light);
  box-shadow: none;
}
.game-btn.game-btn--ghost:hover {
  background: var(--surface-hover);
  border-color: var(--primary-blue);
  color: var(--primary-blue);
}
.game-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}
.game-btn i {
  font-size: 11px;
}
.game-howto {
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.6;
  max-width: 460px;
}
.game-howto strong {
  color: var(--text-dark);
  font-weight: 600;
}
.game-flash {
  position: absolute;
  inset: 0;
  background: rgba(220, 38, 38, 0);
  pointer-events: none;
  transition: background 0.2s ease;
  border-radius: 20px;
  z-index: 6;
}
.game-flash.flash-error {
  background: rgba(220, 38, 38, 0.18);
}

@media (max-width: 640px) {
  .play-title {
    font-size: 24px;
  }
  .play-shell {
    padding: 20px 14px 30px;
  }
  .game-stage {
    padding: 20px 14px 18px;
    gap: 16px;
  }
  .game-stat {
    padding: 6px 10px;
    min-width: 78px;
  }
  .game-stat-value {
    font-size: 16px;
  }
  .game-status-text {
    font-size: 11px;
    padding: 6px 8px;
  }
  .pads-grid {
    gap: 10px;
    max-width: 320px;
  }
  .round-indicator {
    width: 60px;
    height: 60px;
  }
  .round-indicator .ri-value {
    font-size: 18px;
  }
  .game-btn {
    padding: 9px 14px;
    font-size: 11px;
  }
  .game-howto {
    font-size: 11px;
  }
}

.skills-slider {
  position: relative;
  width: 100%;
  overflow: hidden;
  mask-image: linear-gradient(
    to right,
    transparent 0,
    #000 14px,
    #000 calc(100% - 14px),
    transparent 100%
  );
  -webkit-mask-image: linear-gradient(
    to right,
    transparent 0,
    #000 14px,
    #000 calc(100% - 14px),
    transparent 100%
  );
}
.skills-slider-track {
  display: inline-flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 8px;
  width: max-content;
  padding: 6px 0;
  will-change: transform;
  transform: translate3d(0, 0, 0);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  animation: skillsScroll 40s linear infinite;
}
.skills-slider:hover .skills-slider-track {
  animation-play-state: paused;
}
.skills-slider .skills-text {
  font-size: 12px;
  transition:
    color 0.3s ease,
    transform 0.3s ease;
  padding: 2px 4px;
  white-space: nowrap;
  flex-shrink: 0;
}
.skills-slider .skills-text:hover,
.skills-slider .skills-text:focus-visible {
  color: var(--primary-blue);
  transform: translateY(-1px);
}
.skills-slider .skills-text:hover i,
.skills-slider .skills-text:focus-visible i {
  color: var(--primary-blue);
}
.skills-slider .contact-dot {
  flex-shrink: 0;
}
@keyframes skillsScroll {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}
@media (hover: none) {
  .skills-slider:active .skills-slider-track {
    animation-play-state: paused;
  }
}

/* ==============================================================
   PLAY GRID — Echo and Predict sit side by side whenever the
   column is wide enough for two cards, and stack below that.
   ============================================================== */
#content-play {
  /* #id beats Tailwind's .justify-center: with two tall cards,
     centring would push the top of the stack out of scroll reach */
  justify-content: flex-start;
}
.play-grid {
  width: 100%;
  max-width: 1140px;
  /* auto margins centre the stack when it fits and resolve to zero
     when it overflows — the first card always stays reachable */
  margin-block: auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 460px), 1fr));
  gap: 30px;
  align-items: start;
}

/* ==============================================================
   "PREDICT." — guess-the-output code teaser
   ============================================================== */
.teaser-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  width: 100%;
  max-width: 460px;
}
.teaser-level {
  font-family: "Space Mono", monospace;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--primary-blue);
  background: color-mix(in srgb, var(--primary-blue) 9%, transparent);
  border: 1px solid color-mix(in srgb, var(--primary-blue) 38%, transparent);
  padding: 4px 9px;
  border-radius: 999px;
  white-space: nowrap;
}
.teaser-topic {
  font-family: "Space Mono", monospace;
  font-size: 10px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.teaser-code {
  width: 100%;
  max-width: 460px;
  margin: 0;
  padding: 14px 16px;
  text-align: left;
  font-family: "Space Mono", monospace;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--text-dark);
  background: var(--bg-card-alt);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  overflow-x: auto;
  white-space: pre;
  tab-size: 2;
}
.teaser-code code {
  font: inherit;
  color: inherit;
}
.tk-cmt {
  color: #98a2b3;
  font-style: italic;
}
.tk-str {
  color: #16a34a;
}
.tk-num {
  color: #b45309;
}
.tk-key {
  color: var(--primary-blue);
  font-weight: 600;
}
.tk-fn {
  color: #0f766e;
}
[data-theme="dark"] .tk-cmt {
  color: #6b7280;
}
[data-theme="dark"] .tk-str {
  color: #4ade80;
}
[data-theme="dark"] .tk-num {
  color: #fbbf24;
}
[data-theme="dark"] .tk-key {
  color: #93aaff;
}
[data-theme="dark"] .tk-fn {
  color: #5eead4;
}

.teaser-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 190px), 1fr));
  gap: 9px;
  width: 100%;
  max-width: 460px;
}
.teaser-opt {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 13px;
  text-align: left;
  color: var(--text-dark);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  cursor: pointer;
  transition:
    border-color 0.18s ease,
    background-color 0.18s ease,
    transform 0.12s ease,
    opacity 0.18s ease;
}
.teaser-opt:hover:not(:disabled) {
  border-color: var(--primary-blue);
  transform: translateY(-1px);
}
.teaser-opt:focus-visible {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
}
.teaser-opt:disabled {
  cursor: default;
}
.teaser-opt__key {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  font-family: "Space Mono", monospace;
  font-size: 10px;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--bg-card-alt);
  border: 1px solid var(--border-light);
  transition: all 0.18s ease;
}
.teaser-opt__text {
  min-width: 0;
  font-size: 12.5px;
  line-height: 1.45;
  overflow-wrap: anywhere;
}
.teaser-options.is-locked .teaser-opt:not(.is-correct):not(.is-wrong) {
  opacity: 0.5;
}
.teaser-opt.is-correct {
  border-color: #16a34a;
  background: color-mix(in srgb, #16a34a 9%, var(--bg-card));
}
.teaser-opt.is-correct .teaser-opt__key {
  color: #ffffff;
  background: #16a34a;
  border-color: #16a34a;
}
.teaser-opt.is-wrong {
  border-color: #dc2626;
  background: color-mix(in srgb, #dc2626 9%, var(--bg-card));
}
.teaser-opt.is-wrong .teaser-opt__key {
  color: #ffffff;
  background: #dc2626;
  border-color: #dc2626;
}

.teaser-explain {
  width: 100%;
  max-width: 460px;
  margin: 0;
  padding: 12px 14px;
  text-align: left;
  font-size: 12px;
  line-height: 1.65;
  color: var(--text-muted);
  background: var(--bg-card-alt);
  border: 1px solid var(--border-light);
  border-left: 3px solid var(--primary-blue);
  border-radius: 10px;
  animation: teaserExplainIn 0.3s ease both;
}
@keyframes teaserExplainIn {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.teaser-result {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 100%;
  max-width: 460px;
  padding: 18px 16px;
  background: var(--bg-card-alt);
  border: 1px solid var(--border-light);
  border-radius: 14px;
}
.teaser-result__label {
  font-family: "Space Mono", monospace;
  font-size: 9px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--text-muted);
}
.teaser-result__score {
  font-family: "Space Mono", monospace;
  font-size: 42px;
  font-weight: 700;
  line-height: 1;
  color: var(--primary-blue);
}
.teaser-result__msg {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text-muted);
  max-width: 360px;
}

/* `hidden` has to win over the display rules above */
.teaser-options[hidden],
.teaser-result[hidden],
.teaser-explain[hidden],
.teaser-meta[hidden],
#teaserCodeWrap[hidden] {
  display: none !important;
}

@media (max-width: 560px) {
  .teaser-code {
    font-size: 11.5px;
    padding: 12px 13px;
    line-height: 1.7;
  }
  .teaser-opt {
    padding: 10px 11px;
  }
  .teaser-opt__text {
    font-size: 12px;
  }
  .teaser-result__score {
    font-size: 34px;
  }
  .teaser-topic {
    display: none;
  }
}