:root {
  color-scheme: light;
  --mc-page: #f7f3eb;
  --mc-page-edge: #ece4d8;
  --mc-shell: rgba(255, 252, 246, 0.8);
  --mc-card: #ede4d6;
  --mc-card-hover: #e7dccd;
  --mc-card-border: #d8cdbe;
  --mc-text: #1f1d1a;
  --mc-muted: #6b6459;
  --mc-line: #ddd1c2;
  --mc-button: #ece4d8;
  --mc-button-hover: #e1d7c8;
  --mc-button-text: #353129;
  --mc-button-primary: #2f382f;
  --mc-button-primary-hover: #252d25;
  --mc-selected: #343730;
  --mc-selected-border: #262923;
  --mc-selected-text: #fbf8f1;
  --mc-feedback-ok: #3d744a;
  --mc-feedback-warn: #7d5a16;
  --mc-feedback-error: #8b3c37;
  --mc-yellow: #f0df86;
  --mc-green: #b8cf8f;
  --mc-blue: #a9c8d7;
  --mc-purple: #c8b2dc;
  --mc-shadow: 0 10px 24px rgba(74, 61, 41, 0.08);
  --mc-card-radius: 14px;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  color: var(--mc-text);
  font-family: 'Manrope', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  overflow-x: hidden;
  background:
    radial-gradient(900px 500px at 12% -10%, rgba(231, 222, 207, 0.9) 0%, transparent 68%),
    radial-gradient(720px 420px at 90% 0%, rgba(240, 233, 220, 0.92) 0%, transparent 70%),
    linear-gradient(180deg, var(--mc-page), var(--mc-page-edge));
}

.mc-app {
  width: min(980px, calc(100vw - 24px));
  margin: 0 auto;
  padding: 18px 0 32px;
  display: grid;
  gap: 20px;
  animation: mc-fade-up 260ms ease-out;
}

.mc-game-shell {
  width: min(760px, 100%);
  margin: 0 auto;
  display: grid;
  gap: 10px;
}

@keyframes mc-fade-up {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.mc-topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 18px;
  padding: 4px 4px 2px;
}

.mc-title-block {
  display: grid;
  gap: 4px;
}

.mc-kicker {
  margin: 0;
  color: var(--mc-muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  line-height: 0.96;
  letter-spacing: -0.03em;
}

.mc-subtitle {
  margin: 0;
  max-width: 38ch;
  color: var(--mc-muted);
  font-size: 0.95rem;
  line-height: 1.35;
}

.mc-top-meta {
  display: grid;
  justify-items: end;
  gap: 10px;
  padding-top: 2px;
}

.mc-next-countdown {
  margin: 0;
  color: var(--mc-muted);
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.mc-top-actions {
  display: flex;
  gap: 8px;
}

.mc-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--mc-line);
  border-radius: 999px;
  color: var(--mc-button-text);
  background: rgba(255, 252, 246, 0.74);
  text-decoration: none;
  font-size: 0.87rem;
  font-weight: 700;
  transition: background 120ms ease, border-color 120ms ease, transform 120ms ease;
}

.mc-link:hover,
.mc-link:focus-visible {
  background: #fffaf1;
  border-color: #cdbfa9;
  transform: translateY(-1px);
}

.mc-start {
  border: 1px solid var(--mc-line);
  border-radius: 18px;
  background: var(--mc-shell);
  box-shadow: var(--mc-shadow);
  overflow: hidden;
  max-height: 120px;
  transition:
    max-height 220ms ease,
    opacity 200ms ease,
    transform 200ms ease,
    border-color 200ms ease,
    margin 200ms ease;
}

.mc-start.is-hidden {
  max-height: 0;
  margin: 0;
  opacity: 0;
  transform: translateY(-6px);
  border-color: transparent;
  box-shadow: none;
  pointer-events: none;
}

.mc-start-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 14px;
}

.mc-start-copy {
  display: grid;
  gap: 3px;
}

.mc-start-title,
.mc-start-text {
  margin: 0;
}

.mc-start-title {
  font-size: 0.96rem;
  font-weight: 800;
}

.mc-start-text {
  color: var(--mc-muted);
  font-size: 0.88rem;
}

.mc-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 2px 0;
}

.mc-status-side {
  display: flex;
  align-items: center;
  gap: 10px;
}

.mc-pill {
  min-height: 40px;
  padding: 8px 14px;
  border: 1px solid var(--mc-line);
  border-radius: 999px;
  background: rgba(255, 252, 246, 0.74);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.7) inset;
  font-size: 0.88rem;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
}

.mc-pill-title {
  flex: 1 1 auto;
  min-width: 0;
}

.mc-mistakes {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 40px;
}

.mc-mistakes-label {
  color: var(--mc-muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.mc-mistake-dots {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.mc-mistake-dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: var(--mc-selected);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}

.mc-mistake-dot.is-spent {
  opacity: 0.22;
}

.mc-feedback {
  min-height: 1.35em;
  margin: 0;
  color: var(--mc-muted);
  font-size: 0.92rem;
  font-weight: 800;
  text-align: center;
}

.mc-feedback[data-kind='ok'] {
  color: var(--mc-feedback-ok);
}

.mc-feedback[data-kind='warn'] {
  color: var(--mc-feedback-warn);
}

.mc-feedback[data-kind='error'] {
  color: var(--mc-feedback-error);
}

.mc-solved-wrap,
.mc-board-wrap {
  display: grid;
  gap: 8px;
}

.mc-board-wrap[hidden],
.mc-controls[hidden] {
  display: none;
}

.mc-solved-groups {
  display: grid;
  gap: 8px;
}

.mc-solved-empty {
  margin: 0;
  padding: 12px 0 6px;
  color: var(--mc-muted);
  font-size: 0.92rem;
  text-align: center;
}

.mc-solved-card {
  border-radius: 18px;
  padding: 12px 14px;
  display: grid;
  gap: 6px;
  color: #27231c;
  box-shadow: inset 0 0 0 1px rgba(53, 45, 34, 0.14);
  animation: mc-pop-in 220ms ease;
}

.mc-solved-card[data-color='yellow'] {
  background: var(--mc-yellow);
}

.mc-solved-card[data-color='green'] {
  background: var(--mc-green);
}

.mc-solved-card[data-color='blue'] {
  background: var(--mc-blue);
}

.mc-solved-card[data-color='purple'] {
  background: var(--mc-purple);
}

.mc-solved-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.mc-solved-label {
  margin: 0;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.mc-solved-card h3 {
  margin: 0;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 1rem;
  letter-spacing: -0.01em;
}

.mc-solved-answer {
  font-weight: 800;
}

.mc-solved-card p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.35;
}

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

.mc-solved-member {
  min-height: 118px;
  padding: 10px 10px 9px;
  border-radius: 12px;
  background: rgba(255, 252, 246, 0.42);
  box-shadow: inset 0 0 0 1px rgba(53, 45, 34, 0.14);
  display: flex;
  flex-direction: column;
}

.mc-solved-member-prompt {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.32;
  font-weight: 800;
  letter-spacing: -0.01em;
  white-space: normal;
  overflow-wrap: anywhere;
}

.mc-solved-member-meta {
  margin-top: auto;
  padding-top: 8px;
  color: rgba(39, 35, 28, 0.72);
  font-size: 0.67rem;
  font-weight: 700;
}

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

.mc-card {
  position: relative;
  min-height: 160px;
  border-radius: var(--mc-card-radius);
  background: var(--mc-card);
  box-shadow: inset 0 0 0 1px var(--mc-card-border);
  transition:
    background 120ms ease,
    box-shadow 120ms ease,
    transform 120ms ease,
    opacity 120ms ease;
}

.mc-card:hover {
  background: var(--mc-card-hover);
  transform: translateY(-1px);
}

.mc-card-main {
  all: unset;
  width: 100%;
  min-height: 100%;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 15px 15px 13px;
  cursor: pointer;
}

.mc-card-main:focus-visible {
  outline: 3px solid rgba(71, 81, 63, 0.42);
  outline-offset: -3px;
  border-radius: calc(var(--mc-card-radius) - 1px);
}

.mc-card-prompt {
  margin: 0;
  padding-right: 32px;
  color: inherit;
  font-size: clamp(0.93rem, 0.72rem + 0.42vw, 1.04rem);
  line-height: 1.34;
  font-weight: 800;
  letter-spacing: -0.01em;
  white-space: normal;
  overflow: visible;
  overflow-wrap: anywhere;
  word-break: normal;
  text-wrap: pretty;
}

.mc-card-meta {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid rgba(70, 60, 46, 0.12);
  display: flex;
  flex-wrap: wrap;
  gap: 4px 8px;
  color: var(--mc-muted);
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1.35;
}

.mc-card-meta span {
  display: inline-flex;
  align-items: center;
  white-space: normal;
}

.mc-card-expand {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 28px;
  height: 28px;
  border: 0;
  border-radius: 999px;
  color: #4d473d;
  background: rgba(255, 252, 246, 0.72);
  opacity: 0.58;
}

.mc-card:hover .mc-card-expand,
.mc-card:focus-within .mc-card-expand,
.mc-card-expand:focus-visible {
  opacity: 1;
}

.mc-card.is-selected {
  background: var(--mc-selected);
  color: var(--mc-selected-text);
  box-shadow: inset 0 0 0 2px var(--mc-selected-border);
}

.mc-card.is-selected .mc-card-meta {
  border-top-color: rgba(255, 255, 255, 0.14);
  color: rgba(251, 248, 241, 0.76);
}

.mc-card.is-selected .mc-card-expand {
  opacity: 1;
  color: var(--mc-selected-text);
  background: rgba(255, 255, 255, 0.1);
}

.mc-card.is-locked {
  opacity: 0.8;
}

.mc-card.is-locked .mc-card-main {
  cursor: default;
}

.mc-card.is-revealed {
  box-shadow: inset 0 0 0 2px rgba(56, 48, 38, 0.18);
}

.mc-card.is-shake {
  animation: mc-shake 320ms ease;
}

.mc-card.is-one-away {
  animation: mc-pulse 420ms ease;
}

.mc-controls {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 2px;
}

.mc-btn,
.mc-icon-btn {
  border: 1px solid var(--mc-line);
  border-radius: 999px;
  color: var(--mc-button-text);
  background: var(--mc-button);
  font: inherit;
  cursor: pointer;
  transition: background 120ms ease, border-color 120ms ease, transform 120ms ease, opacity 120ms ease;
}

.mc-btn {
  min-height: 42px;
  padding: 0 16px;
  font-size: 0.92rem;
  font-weight: 800;
}

.mc-btn:hover,
.mc-btn:focus-visible,
.mc-icon-btn:hover,
.mc-icon-btn:focus-visible {
  background: var(--mc-button-hover);
  border-color: #c7baa8;
  transform: translateY(-1px);
}

.mc-btn[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.mc-btn-primary {
  color: var(--mc-selected-text);
  border-color: #252b25;
  background: var(--mc-button-primary);
}

.mc-btn-primary:hover,
.mc-btn-primary:focus-visible {
  background: var(--mc-button-primary-hover);
  border-color: #202520;
}

.mc-audit {
  width: min(980px, 100%);
  margin: 0 auto;
  border: 1px solid var(--mc-line);
  border-radius: 18px;
  background: rgba(255, 252, 246, 0.7);
  box-shadow: var(--mc-shadow);
}

.mc-audit details {
  padding: 12px 14px;
}

.mc-audit summary {
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 800;
}

.mc-audit-content {
  margin-top: 12px;
  display: grid;
  gap: 14px;
}

.mc-audit-content h3 {
  margin: 0 0 8px;
}

.mc-audit-content p,
.mc-audit-content li {
  color: #3f392f;
  line-height: 1.45;
}

.mc-audit-content table {
  width: 100%;
  border-collapse: collapse;
}

.mc-audit-content th,
.mc-audit-content td {
  padding: 8px 6px;
  border-bottom: 1px solid var(--mc-line);
  text-align: left;
  vertical-align: top;
  font-size: 0.88rem;
}

.mc-audit-content th {
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mc-muted);
}

.mc-dialog {
  width: min(720px, calc(100vw - 24px));
  max-height: calc(100dvh - 16px);
  border: 1px solid var(--mc-line);
  border-radius: 18px;
  padding: 0;
  color: var(--mc-text);
  background: #fbf7ef;
  box-shadow: 0 18px 44px rgba(54, 46, 36, 0.2);
}

.mc-dialog::backdrop {
  background: rgba(73, 63, 49, 0.28);
  backdrop-filter: blur(3px);
}

.mc-dialog article {
  max-height: calc(100dvh - 18px);
  overflow: auto;
  padding: 16px;
  display: grid;
  gap: 12px;
}

.mc-dialog header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.mc-dialog h2 {
  margin: 0;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.mc-icon-btn {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
}

.mc-dialog-math {
  padding: 12px;
  border: 1px solid var(--mc-line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.5);
  overflow-x: auto;
}

.mc-dialog-meta {
  padding-top: 10px;
  border-top: 1px solid var(--mc-line);
  font-size: 0.92rem;
}

.mc-dialog-meta p {
  margin: 4px 0;
}

.mc-result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.mc-share-preview {
  margin: 0;
  padding: 10px 12px;
  border: 1px dashed #ccbda7;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.45);
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre-wrap;
}

.katex {
  font-size: 1.04em;
}

.mc-solved-card .katex,
.mc-dialog .katex {
  white-space: normal;
}

@keyframes mc-shake {
  20% {
    transform: translateX(-4px);
  }

  40% {
    transform: translateX(4px);
  }

  60% {
    transform: translateX(-3px);
  }

  80% {
    transform: translateX(3px);
  }

  100% {
    transform: translateX(0);
  }
}

@keyframes mc-pulse {
  0% {
    box-shadow: inset 0 0 0 2px rgba(125, 90, 22, 0.45), 0 0 0 0 rgba(125, 90, 22, 0.2);
  }

  100% {
    box-shadow: inset 0 0 0 2px rgba(125, 90, 22, 0.45), 0 0 0 16px rgba(125, 90, 22, 0);
  }
}

@keyframes mc-pop-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 860px) {
  .mc-topbar {
    flex-direction: column;
  }

  .mc-top-meta {
    width: 100%;
    justify-items: start;
  }

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

  .mc-status-side {
    justify-content: space-between;
  }
}

@media (max-width: 720px) {
  .mc-start {
    max-height: 220px;
  }

  .mc-board {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 6px;
  }

  .mc-solved-members-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .mc-start-card {
    flex-direction: column;
    align-items: stretch;
  }

  .mc-start-card .mc-btn {
    width: 100%;
  }

  .mc-card {
    min-height: clamp(94px, 21vw, 126px);
  }

  .mc-card-main {
    gap: 8px;
    padding: 28px 10px 10px;
  }

  .mc-card-prompt {
    padding-right: 16px;
    font-size: clamp(0.68rem, 0.52rem + 0.52vw, 0.86rem);
    line-height: 1.18;
  }

  .mc-card-meta {
    gap: 2px 6px;
    padding-top: 8px;
    font-size: 0.66rem;
  }

  .mc-card-expand {
    top: 8px;
    right: 8px;
    width: 24px;
    height: 24px;
    font-size: 0.8rem;
  }

  .mc-solved-member {
    min-height: 102px;
  }

  .mc-btn {
    flex: 1 1 148px;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .mc-app {
    width: calc(100vw - 16px);
    padding-top: 14px;
  }

  .mc-start {
    max-height: 240px;
  }

  .mc-solved-members-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .mc-card {
    min-height: clamp(90px, 29vw, 112px);
  }

  .mc-card-main {
    gap: 6px;
    padding: 24px 7px 8px;
  }

  .mc-card-prompt {
    padding-right: 12px;
    font-size: clamp(0.58rem, 0.46rem + 0.56vw, 0.74rem);
    line-height: 1.14;
    text-wrap: balance;
  }

  .mc-card-meta {
    display: none;
  }

  .mc-card-expand {
    top: 6px;
    right: 6px;
    width: 20px;
    height: 20px;
    font-size: 0.74rem;
  }

  .mc-status-side {
    flex-wrap: wrap;
    gap: 8px;
  }

  .mc-top-actions {
    flex-wrap: wrap;
  }

  .mc-solved-header {
    flex-direction: column;
  }

  .mc-result-actions .mc-btn {
    flex: 1 1 calc(50% - 8px);
  }
}

@media (max-width: 380px) {
  .mc-card-main {
    padding: 22px 6px 6px;
  }

  .mc-card-prompt {
    font-size: 0.56rem;
    line-height: 1.12;
  }

  .mc-solved-members-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}