:root {
  --felt: #28704f;
  --felt-deep: #123e34;
  --felt-dark: #0d2527;
  --paper: #fff9ea;
  --paper-2: #efe6d2;
  --ink: #18262b;
  --cream: #fff7e8;
  --muted: #6f837b;
  --panel: #f8f0df;
  --panel-dark: #172627;
  --line: #101819;
  --red: #e94039;
  --orange: #f49b1f;
  --blue: #168fd4;
  --gold: #f7bd3d;
  --green: #37b978;
  --locked: #65716e;
  --shadow: rgba(7, 18, 20, 0.32);
  --radius: 8px;
  --ease: cubic-bezier(0.2, 0.9, 0.2, 1);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  height: 100%;
  overflow: hidden;
}

body {
  height: 100vh;
  height: 100dvh;
  margin: 0;
  overflow: hidden;
  color: var(--cream);
  font-family: "Trebuchet MS", "Segoe UI", "Microsoft JhengHei UI", "Microsoft JhengHei", "Noto Sans TC", sans-serif;
  font-weight: 700;
  letter-spacing: 0;
  background:
    radial-gradient(ellipse at 50% -10%, rgba(255, 249, 234, 0.12), transparent 36rem),
    linear-gradient(135deg, var(--felt-dark), var(--felt-deep) 42%, #1f6048);
}

button,
select {
  font: inherit;
}

button {
  min-height: 44px;
}

button,
select,
summary {
  outline-offset: 4px;
}

button:focus-visible,
select:focus-visible,
summary:focus-visible {
  outline: 4px solid rgba(247, 189, 61, 0.76);
}

.skip-link {
  position: fixed;
  left: 14px;
  top: 12px;
  z-index: 60;
  transform: translateY(-140%);
  border: 3px solid var(--line);
  border-radius: var(--radius);
  padding: 8px 12px;
  color: var(--ink);
  background: var(--gold);
}

.skip-link:focus {
  transform: translateY(0);
}

.app-topbar {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  width: min(1040px, calc(100vw - 24px));
  margin: 10px auto 0;
}

.menu-btn,
.leaderboard-menu-btn,
.close-btn,
.round-nav,
.primary-btn,
.secondary-btn,
.ghost-btn,
.danger-btn,
.operator-btn,
.target-bubble {
  border: 0;
  cursor: pointer;
  transition: transform 140ms var(--ease), filter 140ms var(--ease), box-shadow 140ms var(--ease);
}

.menu-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  width: 46px;
  height: 40px;
  min-height: 40px;
  border: 2px solid rgba(255, 247, 232, 0.3);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(11, 35, 34, 0.94), rgba(6, 19, 20, 0.88));
  box-shadow:
    inset 0 1px 0 rgba(255, 247, 232, 0.16),
    0 4px 0 rgba(7, 18, 20, 0.82),
    0 10px 20px var(--shadow);
}

.leaderboard-menu-btn {
  flex-direction: row;
  gap: 0;
  width: 46px;
  height: 40px;
  min-height: 40px;
}

.leaderboard-menu-btn svg {
  width: 25px;
  height: 25px;
  fill: var(--gold);
  filter: drop-shadow(0 2px 0 rgba(7, 18, 20, 0.72));
}

.leaderboard-menu-btn:hover svg {
  fill: #ffd866;
}

.menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  border-radius: 999px;
  background: var(--cream);
  box-shadow: 0 1px 0 rgba(7, 18, 20, 0.72);
}

.brand {
  min-width: 0;
}

.eyebrow,
.brand p,
h1,
h2,
h3,
p {
  margin-top: 0;
}

.eyebrow {
  margin-bottom: 3px;
  color: var(--gold);
  font-size: 12px;
  line-height: 1.1;
  text-transform: uppercase;
}

h1 {
  margin-bottom: 0;
  color: var(--cream);
  font-size: clamp(24px, 4vw, 42px);
  line-height: 1;
  text-shadow: 3px 3px 0 rgba(16, 24, 25, 0.62);
}

h2 {
  margin-bottom: 0;
  color: var(--cream);
  font-size: 22px;
  line-height: 1.1;
}

h3 {
  margin-bottom: 6px;
  color: var(--gold);
  font-size: 17px;
  line-height: 1.1;
}

.topbar-status {
  display: flex;
  align-items: center;
  justify-content: end;
  gap: 8px;
  min-width: 0;
}

.account-status-btn {
  min-height: 34px;
  cursor: pointer;
}

.score-board {
  position: absolute;
  left: 50%;
  top: 3px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  border-radius: 999px;
  padding: 5px 12px;
  color: var(--cream);
  background: rgba(255, 249, 234, 0.11);
  box-shadow: inset 0 1px 0 rgba(255, 247, 232, 0.12), 0 3px 0 rgba(7, 18, 20, 0.62);
  transform: translateX(-50%);
  white-space: nowrap;
}

.score-board span {
  color: var(--gold);
  font-size: 13px;
  font-weight: 900;
  line-height: 1;
  text-shadow: 1px 1px 0 var(--line);
}

.score-board strong {
  min-width: 34px;
  color: var(--cream);
  font-size: 22px;
  line-height: 1;
  text-align: right;
  text-shadow: 2px 2px 0 rgba(16, 24, 25, 0.62);
}

.active-set-chip,
.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  border-radius: 999px;
  padding: 5px 11px;
  white-space: nowrap;
}

.active-set-chip {
  max-width: 320px;
  overflow: hidden;
  color: rgba(255, 247, 232, 0.9);
  text-overflow: ellipsis;
  background: rgba(255, 249, 234, 0.11);
}

.status-pill {
  color: var(--ink);
  background: var(--gold);
}

.status-pill.ready {
  background: var(--green);
}

.status-pill.busy {
  background: var(--gold);
}

.status-pill.idle {
  color: var(--cream);
  background: rgba(255, 249, 234, 0.14);
}

.game-stage {
  display: grid;
  place-items: center;
  width: min(1040px, calc(100vw - 24px));
  height: calc(100vh - 58px);
  height: calc(100dvh - 58px);
  min-height: 0;
  margin: 0 auto;
  padding: 8px 0 10px;
}

.puzzle-panel {
  display: grid;
  grid-template-rows: auto auto auto auto auto;
  gap: 11px;
  width: min(100%, 900px);
  max-height: 100%;
}

.target-nav {
  display: block;
}

.round-nav {
  position: fixed;
  top: 44vh;
  z-index: 12;
  display: grid;
  place-items: center;
  width: 48px;
  height: 88px;
  border: 2px solid rgba(255, 247, 232, 0.2);
  color: #ffe29a;
  background: linear-gradient(180deg, rgba(15, 54, 47, 0.94), rgba(7, 23, 24, 0.96));
  box-shadow:
    inset 0 1px 0 rgba(255, 247, 232, 0.12),
    0 10px 24px var(--shadow);
  font-size: 48px;
  line-height: 1;
  transform: translateY(-50%);
  text-shadow: 0 3px 0 rgba(4, 14, 15, 0.9);
}

#prevTargetBtn {
  left: 0;
  border-left: 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}

#nextTargetBtn {
  right: 0;
  border-right: 0;
  border-radius: var(--radius) 0 0 var(--radius);
}

.round-nav:disabled {
  opacity: 0.42;
  cursor: not-allowed;
  transform: translateY(-50%);
}

.target-card {
  position: relative;
  isolation: isolate;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 6px;
  min-height: 124px;
  overflow: visible;
  border: 0;
  border-radius: 0;
  color: var(--cream);
  background:
    radial-gradient(ellipse at 50% 58%, rgba(247, 189, 61, 0.22), transparent 58%),
    radial-gradient(ellipse at 50% 45%, rgba(255, 247, 232, 0.06), transparent 42%);
  box-shadow: none;
}

.target-card::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 7%;
  right: 7%;
  height: 88px;
  z-index: -1;
  border-top: 1px solid rgba(255, 247, 232, 0.16);
  border-bottom: 1px solid rgba(255, 247, 232, 0.12);
  background: linear-gradient(90deg, transparent, rgba(255, 247, 232, 0.045), transparent);
  transform: translateY(-50%);
}

.target-card::after {
  content: "";
  position: absolute;
  left: 28%;
  right: 28%;
  bottom: 4px;
  height: 3px;
  z-index: -1;
  background: linear-gradient(90deg, transparent, rgba(247, 189, 61, 0.76), transparent);
  opacity: 0.72;
}

.target-card.slide-left {
  animation: targetSlideLeft 220ms var(--ease);
}

.target-card.slide-right {
  animation: targetSlideRight 220ms var(--ease);
}

@keyframes targetSlideLeft {
  0% {
    opacity: 0.35;
    transform: translateX(-28px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes targetSlideRight {
  0% {
    opacity: 0.35;
    transform: translateX(28px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

.target-card span {
  position: relative;
  z-index: 1;
  border: 1px solid rgba(255, 247, 232, 0.16);
  border-radius: 6px;
  padding: 3px 12px;
  color: var(--gold);
  background: rgba(7, 21, 22, 0.42);
  font-size: 14px;
  line-height: 1.1;
  text-shadow: 0 2px 0 rgba(3, 12, 13, 0.72);
}

.target-card strong {
  position: relative;
  z-index: 1;
  color: var(--cream);
  font-size: clamp(84px, 13vw, 142px);
  line-height: 0.82;
  text-shadow:
    0 5px 0 rgba(3, 12, 13, 0.76),
    0 0 26px rgba(247, 189, 61, 0.2);
}

.equation-wrap {
  display: grid;
  gap: 10px;
}

.equation-drop {
  position: relative;
  min-height: 84px;
  border: 4px dashed rgba(255, 247, 232, 0.64);
  border-radius: var(--radius);
  padding: 15px;
  background: rgba(255, 249, 234, 0.08);
  box-shadow: inset 0 0 0 1px rgba(255, 249, 234, 0.06);
}

.equation-drop.drag-over {
  border-color: var(--gold);
  background: rgba(247, 189, 61, 0.12);
}

.expression {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 50px;
}

.expression-placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: rgba(255, 247, 232, 0.58);
  pointer-events: none;
}

.expression:not(:empty) + .expression-placeholder {
  display: none;
}

.token-chip {
  display: inline-grid;
  place-items: center;
  min-width: 48px;
  min-height: 48px;
  border: 3px solid var(--line);
  border-radius: var(--radius);
  padding: 4px 10px;
  color: var(--ink);
  background: linear-gradient(180deg, var(--paper), #e5ecdf);
  box-shadow: 3px 3px 0 rgba(10, 20, 22, 0.6);
  font-size: 28px;
  line-height: 1;
}

.token-chip.operator {
  color: var(--cream);
  background: linear-gradient(180deg, var(--orange), #bd7100);
  text-shadow: 2px 2px 0 var(--line);
}

.feedback {
  min-height: 48px;
  margin: 0;
  border: 3px solid rgba(255, 247, 232, 0.18);
  border-radius: var(--radius);
  padding: 10px 12px;
  color: var(--cream);
  background: rgba(16, 24, 25, 0.36);
  line-height: 1.45;
}

.feedback.good {
  color: #173023;
  border-color: rgba(255, 255, 255, 0.22);
  background: linear-gradient(180deg, #dff9d9, #a8e7ad);
  text-shadow: none;
}

.feedback.warn {
  color: var(--ink);
  border-color: rgba(255, 255, 255, 0.22);
  background: linear-gradient(180deg, #fff0b8, var(--gold));
  text-shadow: none;
}

.feedback.bad {
  color: #fff0ef;
  background: linear-gradient(180deg, #5a2b31, #2d1c20);
}

.card-rack {
  padding: 2px 0;
}

.cards {
  display: grid;
  grid-template-columns: repeat(6, minmax(86px, 1fr));
  gap: 10px;
}

.play-card {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 5 / 7;
  min-height: 112px;
  border: 6px solid #f7f2e4;
  border-radius: var(--radius);
  color: var(--ink);
  cursor: grab;
  background:
    linear-gradient(90deg, var(--red) 0 6px, transparent 6px calc(100% - 6px), var(--blue) calc(100% - 6px)),
    linear-gradient(180deg, #fffef8, #e9edf0);
  box-shadow:
    inset 0 0 0 2px #d5dde0,
    inset 0 0 0 7px rgba(255, 255, 255, 0.5),
    5px 6px 0 #233333;
  font-size: clamp(42px, 7vw, 68px);
  font-weight: 800;
  line-height: 1;
  text-shadow: 2px 2px 0 rgba(255, 255, 255, 0.55);
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

.play-card::before,
.play-card::after {
  content: attr(data-rank);
  position: absolute;
  font-size: 16px;
  line-height: 1;
  text-shadow: none;
}

.play-card::before {
  top: 9px;
  left: 10px;
  color: var(--red);
}

.play-card::after {
  right: 10px;
  bottom: 9px;
  color: var(--blue);
  transform: rotate(180deg);
}

.play-card.used {
  color: rgba(255, 247, 232, 0.5);
  cursor: not-allowed;
  background:
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0 8px, transparent 8px 16px),
    linear-gradient(180deg, #65716e, #3c4748);
  box-shadow:
    inset 0 0 0 2px rgba(255, 255, 255, 0.08),
    3px 4px 0 rgba(18, 30, 31, 0.75);
  text-shadow: 2px 2px 0 rgba(0, 0, 0, 0.35);
}

.play-card:disabled {
  cursor: not-allowed;
}

.play-card.blocked {
  opacity: 0.58;
  filter: saturate(0.72);
}

.play-card.dragging {
  opacity: 1;
  cursor: grabbing;
  transform: translateY(-8px) rotate(-4deg) scale(1.03);
  filter: saturate(1.08) brightness(1.03);
  z-index: 5;
}

.play-card.drag-preview {
  position: fixed;
  top: -1000px;
  left: -1000px;
  width: 120px;
  opacity: 1 !important;
  z-index: 1000;
  cursor: grabbing;
  pointer-events: none;
  transform: rotate(-5deg) scale(1.04);
  transform-origin: 50% 55%;
  filter: saturate(1.12) brightness(1.08) contrast(1.08);
  box-shadow:
    inset 0 0 0 2px #d5dde0,
    inset 0 0 0 7px rgba(255, 255, 255, 0.62),
    9px 12px 0 rgba(7, 18, 20, 0.72),
    0 18px 28px rgba(0, 0, 0, 0.38);
}

.operator-panel {
  display: grid;
  grid-template-columns: repeat(7, minmax(48px, 1fr));
  gap: 8px;
}

.operator-btn {
  min-height: 50px;
  border-radius: var(--radius);
  color: var(--cream);
  background: linear-gradient(180deg, var(--orange), #bd7100);
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, 0.24), 0 5px 0 var(--line);
  font-size: 29px;
  line-height: 1;
  text-shadow: 2px 2px 0 var(--line);
}

.operator-btn:disabled {
  opacity: 0.42;
  cursor: not-allowed;
  filter: saturate(0.7);
  transform: none;
}

.operator-btn:disabled:hover {
  filter: saturate(0.7);
  transform: none;
}

.action-panel,
.button-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.button-row {
  grid-template-columns: repeat(2, 1fr);
}

.primary-btn,
.secondary-btn,
.ghost-btn,
.danger-btn {
  border-radius: var(--radius);
  padding: 8px 10px;
  color: var(--cream);
  text-shadow: 2px 2px 0 var(--line);
}

.primary-btn {
  background: linear-gradient(180deg, var(--red), #a91e22);
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, 0.18), 0 5px 0 var(--line);
}

.primary-btn.next-ready {
  color: #0d2527;
  background: linear-gradient(180deg, #50d58f, var(--green));
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, 0.28), 0 5px 0 #08211b;
  text-shadow: none;
}

.primary-btn.next-ready:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  filter: saturate(0.7);
}

.secondary-btn {
  background: linear-gradient(180deg, var(--blue), #096fb7);
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, 0.18), 0 5px 0 var(--line);
}

.ghost-btn {
  background: linear-gradient(180deg, #55706b, #2f4947);
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, 0.18), 0 5px 0 var(--line);
}

.danger-btn {
  width: 100%;
  margin-top: 12px;
  background: linear-gradient(180deg, #5a2b31, #2d1c20);
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, 0.12), 0 5px 0 var(--line);
}

.menu-btn:hover,
.close-btn:hover,
.primary-btn:hover,
.secondary-btn:hover,
.ghost-btn:hover,
.danger-btn:hover,
.operator-btn:hover,
.target-bubble:hover,
.play-card:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
}

#prevTargetBtn:hover {
  filter: brightness(1.08);
  transform: translateY(-50%) translateX(2px);
}

#nextTargetBtn:hover {
  filter: brightness(1.08);
  transform: translateY(-50%) translateX(-2px);
}

.play-card:disabled:hover {
  filter: none;
  transform: none;
}

.round-nav:disabled:hover {
  filter: none;
  transform: translateY(-50%);
}

.drawer-backdrop {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: rgba(6, 14, 16, 0.48);
}

.settings-drawer {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 50;
  display: grid;
  grid-template-rows: auto auto auto minmax(0, 1fr);
  gap: 12px;
  width: min(560px, 100vw);
  height: 100vh;
  height: 100dvh;
  min-height: 0;
  padding: 16px;
  overflow: hidden;
  color: var(--cream);
  background: linear-gradient(180deg, #263637, #172627);
  box-shadow: 14px 0 42px rgba(0, 0, 0, 0.38);
  transform: translateX(-104%);
  transition: transform 220ms var(--ease);
}

body.drawer-open .settings-drawer {
  transform: translateX(0);
}

.leaderboard-drawer {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 50;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 12px;
  width: min(420px, 100vw);
  height: 100vh;
  height: 100dvh;
  min-height: 0;
  padding: 16px;
  overflow: hidden;
  color: var(--cream);
  background: linear-gradient(180deg, #263637, #172627);
  box-shadow: -14px 0 42px rgba(0, 0, 0, 0.38);
  transform: translateX(104%);
  transition: transform 220ms var(--ease);
}

body.leaderboard-open .leaderboard-drawer {
  transform: translateX(0);
}

.right-drawer-backdrop {
  z-index: 40;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 70;
  background: rgba(6, 14, 16, 0.6);
}

.account-modal {
  position: fixed;
  left: 50%;
  top: 50%;
  z-index: 80;
  display: grid;
  gap: 12px;
  width: min(420px, calc(100vw - 24px));
  max-height: min(680px, calc(100dvh - 24px));
  border: 3px solid rgba(16, 24, 25, 0.92);
  border-radius: var(--radius);
  padding: 16px;
  overflow-y: auto;
  color: var(--cream);
  background: linear-gradient(180deg, #314243, #1b2c2d);
  box-shadow: 0 18px 52px rgba(0, 0, 0, 0.46);
  transform: translate(-50%, -50%);
}

.player-profile-modal {
  width: min(560px, calc(100vw - 24px));
}

.drawer-header,
.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.online-status {
  border: 2px solid rgba(255, 247, 232, 0.18);
  border-radius: 999px;
  padding: 5px 12px;
  color: var(--gold);
  background: rgba(255, 249, 234, 0.11);
  font-size: 13px;
  font-weight: 900;
  line-height: 1;
  white-space: nowrap;
}

.online-status.signed-in {
  color: #0d2527;
  background: linear-gradient(180deg, #50d58f, var(--green));
}

.close-btn {
  width: 44px;
  height: 40px;
  min-height: 40px;
  border: 2px solid rgba(255, 247, 232, 0.26);
  border-radius: var(--radius);
  color: var(--cream);
  background: linear-gradient(180deg, rgba(83, 44, 49, 0.92), rgba(45, 28, 32, 0.95));
  box-shadow: inset 0 1px 0 rgba(255, 247, 232, 0.14), 0 4px 0 var(--line);
  font-size: 28px;
  line-height: 1;
  text-shadow: 0 2px 0 rgba(3, 12, 13, 0.76);
}

.drawer-section {
  border: 3px solid rgba(16, 24, 25, 0.92);
  border-radius: var(--radius);
  padding: 12px;
  background: linear-gradient(180deg, #314243, #1b2c2d);
}

.set-section {
  min-height: 0;
}

.set-section summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-height: 44px;
  cursor: pointer;
  list-style: none;
}

.set-section summary::-webkit-details-marker {
  display: none;
}

.set-section summary span {
  color: var(--cream);
  font-size: 22px;
  line-height: 1.1;
}

.set-section summary b {
  border: 2px solid rgba(255, 247, 232, 0.18);
  border-radius: 6px;
  padding: 4px 8px;
  color: var(--gold);
  background: rgba(7, 21, 22, 0.28);
  font-size: 13px;
  line-height: 1;
}

.set-section[open] summary {
  margin-bottom: 10px;
}

.set-section[open] summary b {
  font-size: 0;
}

.set-section[open] summary b::before {
  content: "收合";
  font-size: 13px;
}

.set-section-body {
  display: grid;
  min-height: 0;
}

.target-map-section {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  min-height: 0;
}

.header-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.header-stats div {
  min-width: 0;
  border: 3px solid var(--line);
  border-radius: var(--radius);
  padding: 8px;
  background: rgba(255, 249, 234, 0.08);
}

.header-stats span {
  display: block;
  color: rgba(255, 247, 232, 0.72);
  font-size: 13px;
}

.header-stats em {
  color: var(--gold);
  font-style: normal;
}

.header-stats strong {
  display: block;
  color: var(--gold);
  font-size: clamp(24px, 4.8vw, 30px);
  line-height: 1;
  white-space: nowrap;
}

.field-label {
  display: block;
  margin: 12px 0 6px;
  color: rgba(255, 247, 232, 0.7);
  font-size: 14px;
}

.auth-panel {
  display: grid;
  gap: 6px;
}

.text-field {
  width: 100%;
  min-height: 42px;
  border: 3px solid var(--line);
  border-radius: var(--radius);
  padding: 7px 10px;
  color: var(--ink);
  background: linear-gradient(180deg, #fffef8, #dce8e0);
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, 0.55);
  font: inherit;
}

.text-field::placeholder {
  color: rgba(13, 37, 39, 0.55);
}

.account-label,
.online-message {
  min-height: 22px;
  margin: 6px 0 0;
  color: var(--cream);
  line-height: 1.4;
}

.account-label {
  color: var(--gold);
  font-weight: 900;
}

.mini-btn {
  min-height: 32px;
  border: 2px solid rgba(255, 247, 232, 0.18);
  border-radius: 6px;
  padding: 4px 9px;
  color: var(--cream);
  background: linear-gradient(180deg, #55706b, #2f4947);
  box-shadow: inset 0 1px 0 rgba(255, 247, 232, 0.12), 0 3px 0 var(--line);
  font-weight: 900;
}

.leaderboard-tabs {
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px;
  min-width: 180px;
  border: 2px solid rgba(255, 247, 232, 0.18);
  border-radius: var(--radius);
  padding: 4px;
  background: rgba(7, 21, 22, 0.26);
}

.leaderboard-tab {
  min-height: 32px;
  border: 0;
  border-radius: 6px;
  color: rgba(255, 247, 232, 0.72);
  background: transparent;
  font: inherit;
  font-size: 14px;
  font-weight: 900;
  cursor: pointer;
}

.leaderboard-tab.active {
  color: var(--ink);
  background: linear-gradient(180deg, var(--gold), #bd7100);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.24), 0 2px 0 var(--line);
}

.leaderboard-list {
  display: grid;
  gap: 6px;
  margin: 10px 0 0;
  padding: 0;
  min-height: 0;
  overflow-y: auto;
  list-style: none;
}

.leaderboard-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  border: 2px solid rgba(255, 247, 232, 0.14);
  border-radius: 6px;
  padding: 7px 8px;
  background: rgba(255, 249, 234, 0.07);
  color: var(--cream);
  font-size: 14px;
}

.leaderboard-player-btn {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  width: 100%;
  border: 0;
  padding: 0;
  color: inherit;
  background: transparent;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.leaderboard-list li:has(.leaderboard-player-btn:hover),
.leaderboard-list li:has(.leaderboard-player-btn:focus-visible) {
  border-color: rgba(255, 198, 54, 0.62);
  background: rgba(255, 198, 54, 0.12);
}

.leaderboard-player-btn:focus-visible {
  outline: 3px solid rgba(255, 198, 54, 0.7);
  outline-offset: 4px;
}

.leaderboard-list .rank {
  color: var(--gold);
  font-weight: 900;
}

.leaderboard-list .player {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.leaderboard-list .points {
  color: var(--gold);
  font-weight: 900;
}

.player-profile-head {
  display: grid;
  gap: 3px;
  border: 3px solid rgba(16, 24, 25, 0.92);
  border-radius: var(--radius);
  padding: 12px;
  background: rgba(255, 249, 234, 0.08);
}

.player-profile-head h3,
.profile-set-section h3 {
  margin: 0;
  color: var(--cream);
  font-size: 22px;
  line-height: 1.1;
}

.player-profile-head p {
  margin: 0;
  color: rgba(255, 247, 232, 0.72);
  font-size: 14px;
}

.profile-stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.profile-stat-grid div {
  min-width: 0;
  border: 3px solid var(--line);
  border-radius: var(--radius);
  padding: 8px;
  background: rgba(7, 21, 22, 0.24);
}

.profile-stat-grid span {
  display: block;
  color: rgba(255, 247, 232, 0.72);
  font-size: 13px;
}

.profile-stat-grid strong {
  display: block;
  overflow: hidden;
  color: var(--gold);
  font-size: clamp(22px, 5vw, 30px);
  line-height: 1;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.profile-set-section {
  display: grid;
  gap: 8px;
  min-height: 0;
}

.profile-set-list {
  display: grid;
  gap: 6px;
  max-height: min(270px, 34dvh);
  margin: 0;
  padding: 0;
  overflow-y: auto;
  list-style: none;
}

.profile-set-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  border: 2px solid rgba(255, 247, 232, 0.14);
  border-radius: 6px;
  padding: 8px;
  background: rgba(255, 249, 234, 0.07);
  color: var(--cream);
  font-size: 14px;
}

.profile-set-name,
.profile-set-detail {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.profile-set-text {
  min-width: 0;
}

.profile-set-name {
  font-weight: 900;
}

.profile-set-detail {
  color: rgba(255, 247, 232, 0.72);
}

.profile-set-score {
  color: var(--gold);
  font-weight: 900;
  white-space: nowrap;
}

select {
  width: 100%;
  border: 3px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  background: linear-gradient(180deg, #fffef8, #dce8e0);
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, 0.55);
}

select {
  min-height: 46px;
  padding: 6px 10px;
}

.set-preview,
.random-message {
  min-height: 24px;
  margin: 8px 0 0;
  color: var(--cream);
  line-height: 1.45;
}

.random-box {
  margin-top: 12px;
  border-top: 2px solid rgba(255, 255, 255, 0.1);
  padding-top: 10px;
}

.random-copy {
  margin-bottom: 10px;
  color: rgba(255, 247, 232, 0.74);
  font-size: 14px;
  line-height: 1.45;
}

.map-key {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(255, 247, 232, 0.72);
  font-size: 12px;
  white-space: nowrap;
}

.key-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.key-dot.best {
  background: var(--gold);
}

.key-dot.correct {
  background: var(--green);
}

.key-dot.impossible {
  background: var(--locked);
}

.target-map {
  display: grid;
  grid-template-columns: repeat(10, minmax(32px, 1fr));
  align-content: start;
  gap: 8px;
  min-height: 0;
  margin-top: 12px;
  padding: 2px 8px 8px 1px;
  overflow-x: hidden;
  overflow-y: auto;
  scrollbar-gutter: stable;
}

.target-bubble {
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  min-width: 0;
  min-height: 32px;
  border: 3px solid rgba(255, 248, 232, 0.18);
  border-radius: 50%;
  color: var(--cream);
  background: linear-gradient(180deg, #55706b, #2f4947);
  font-size: 13px;
  line-height: 1;
  text-shadow: 1px 1px 0 var(--line);
}

.target-bubble.current {
  color: var(--ink);
  border-color: var(--cream);
  background: linear-gradient(180deg, var(--paper), var(--paper-2));
  text-shadow: none;
}

.target-bubble.best {
  background: linear-gradient(180deg, var(--gold), #bd7100);
}

.target-bubble.correct {
  background: linear-gradient(180deg, var(--green), #178942);
}

.target-bubble.revealed {
  background: linear-gradient(180deg, var(--blue), #096fb7);
}

.target-bubble.impossible {
  color: rgba(255, 247, 232, 0.62);
  background:
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.07) 0 6px, transparent 6px 12px),
    linear-gradient(180deg, var(--locked), #3c4748);
}

@media (max-width: 800px) {
  .app-topbar {
    width: min(100vw - 16px, 720px);
    margin-top: 8px;
  }

  .active-set-chip {
    display: none;
  }

  .score-board {
    top: 2px;
    padding-inline: 10px;
  }

  .score-board span {
    font-size: 12px;
  }

  .score-board strong {
    min-width: 32px;
    font-size: 20px;
  }

  .game-stage {
    width: min(100vw - 16px, 720px);
    height: calc(100vh - 62px);
    height: calc(100dvh - 62px);
    min-height: 0;
    padding: 8px 0 96px;
  }

  .puzzle-panel {
    gap: 12px;
  }

  .target-nav {
    grid-template-columns: 52px minmax(0, 1fr) 52px;
    gap: 9px;
  }

  .round-nav {
    top: 35vh;
    width: 42px;
    height: 76px;
    font-size: 42px;
  }

  .target-card {
    min-height: 116px;
  }

  .cards {
    grid-template-columns: repeat(3, minmax(72px, 1fr));
    gap: 9px;
  }

  .play-card {
    min-height: 102px;
  }

  .operator-panel {
    grid-template-columns: repeat(4, 1fr);
  }

  .action-panel {
    grid-template-columns: repeat(2, 1fr);
  }

}

@media (max-width: 430px) {
  .app-topbar {
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 9px;
  }

  .brand .eyebrow {
    display: none;
  }

  .score-board {
    position: static;
    grid-column: 1 / -1;
    grid-row: 2;
    justify-self: center;
    padding: 4px 10px;
    transform: none;
  }

  .score-board strong {
    min-width: 32px;
    font-size: 19px;
  }

  h1 {
    font-size: 25px;
  }

  .status-pill {
    padding-inline: 9px;
    font-size: 13px;
  }

  .target-card strong {
    font-size: clamp(78px, 27vw, 118px);
  }

  .equation-drop {
    min-height: 96px;
  }

  .target-map {
    grid-template-columns: repeat(8, minmax(30px, 1fr));
  }

  .profile-stat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .profile-set-list li {
    grid-template-columns: 1fr;
  }

  .profile-set-list {
    max-height: min(250px, 32dvh);
  }

  .profile-set-score {
    justify-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }
}