.sk-root {
    width: 100%;
    max-width: 80rem;
    margin: 0 auto;
    user-select: none;
    padding: 0.5rem;
  }

  @media (min-width: 768px) {
    .sk-root {
      padding: 1.5rem;
    }
  }

  .sk-header {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    gap: 1rem;
  }

  @media (min-width: 640px) {
    .sk-header {
      flex-direction: row;
    }
  }

  .sk-select-wrapper {
    position: relative;
    width: 100%;
    max-width: 28rem;
  }

  .sk-select-icon {
    position: absolute;
    inset-block: 0;
    left: 0;
    display: flex;
    align-items: center;
    padding-left: 0.75rem;
    pointer-events: none;
  }

  .sk-select {
    width: 100%;
    appearance: none;
    background-color: var(--bg-surface);
    color: var(--text-base);
    font-weight: 700;
    font-size: 1.125rem;
    padding: 0.75rem 3rem 0.75rem 2.5rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    cursor: pointer;
    transition: border-color 0.15s, box-shadow 0.15s;
  }

  .sk-select:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--accent);
    border-color: var(--accent);
  }

  .sk-select-arrow {
    position: absolute;
    inset-block: 0;
    right: 0;
    display: flex;
    align-items: center;
    padding-right: 1rem;
    pointer-events: none;
  }

  .sk-icon-sm {
    width: 1.25rem;
    height: 1.25rem;
  }

  .sk-icon-accent {
    color: var(--accent);
  }

  .sk-icon-muted {
    color: var(--text-muted);
  }

  .sk-controls {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
  }

  .sk-btn-secondary {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--bg-surface);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-weight: 700;
    font-size: 0.875rem;
    cursor: pointer;
    transition: background-color 0.15s, color 0.15s;
  }

  .sk-btn-secondary:hover {
    background-color: var(--bg-page);
    color: var(--text-base);
  }

  .sk-btn-label {
    display: none;
  }

  @media (min-width: 640px) {
    .sk-btn-label {
      display: inline;
    }
  }

  .sk-btn-icon {
    padding: 0.5rem 1rem;
    background-color: var(--bg-surface);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-weight: 700;
    font-size: 0.875rem;
    cursor: pointer;
    transition: background-color 0.15s, color 0.15s;
  }

  .sk-btn-icon:hover {
    color: #ef4444;
    background-color: #fef2f2;
  }

  .sk-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    height: calc(100vh - 12rem);
    min-height: 500px;
  }

  @media (min-width: 768px) {
    .sk-grid {
      grid-template-columns: 1fr 1fr;
      height: 600px;
    }
  }

  .sk-widget {
    position: relative;
    display: flex;
    flex-direction: column;
    border-radius: 2rem;
    border-width: 4px;
    border-style: solid;
    overflow: hidden;
  }

  .sk-widget-a {
    background-color: rgba(59, 130, 246, 0.05);
    border-color: rgb(219, 234, 254);
  }

  .sk-widget-b {
    background-color: rgba(244, 63, 94, 0.05);
    border-color: rgb(254, 205, 211);
  }

  .sk-widget-header {
    position: relative;
    z-index: 20;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 1rem;
    pointer-events: auto;
  }

  @media (min-width: 768px) {
    .sk-widget-header {
      padding: 1.5rem;
    }
  }

  .sk-flex-fill {
    flex: 1;
  }

  .sk-player-name {
    width: 66%;
    background-color: transparent;
    font-size: 1.25rem;
    font-weight: 900;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border: none;
    outline: none;
    transition: color 0.15s;
  }

  @media (min-width: 768px) {
    .sk-player-name {
      font-size: 1.5rem;
    }
  }

  .sk-player-name-a {
    color: rgba(30, 58, 138, 0.5);
  }

  .sk-player-name-a:focus {
    color: #2563eb;
  }

  .sk-player-name-b {
    color: rgba(136, 19, 55, 0.5);
    text-align: right;
  }

  .sk-player-name-b:focus {
    color: #e11d48;
  }

  .sk-serve-indicator {
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 9999px;
    background-color: #facc15;
    border: 2px solid var(--bg-surface);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: opacity 0.3s, transform 0.3s;
    flex-shrink: 0;
  }

  .sk-serve-indicator-b {
    position: absolute;
    left: 1.5rem;
    top: 1.5rem;
  }

  .sk-score-area {
    position: relative;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: -2rem;
  }

  @media (min-width: 768px) {
    .sk-score-area {
      margin-top: 0;
    }
  }

  .sk-score {
    font-size: clamp(8rem, 20vw, 13rem);
    font-weight: 900;
    line-height: 1;
    letter-spacing: -0.05em;
    font-variant-numeric: tabular-nums;
    transition: transform 0.1s;
    z-index: 10;
  }

  .sk-score-a {
    color: #2563eb;
  }

  .sk-score-b {
    color: #e11d48;
  }

  .sk-touch-layer {
    position: absolute;
    inset: 0;
    z-index: 20;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.5rem;
    padding: 1rem;
    padding-top: 6rem;
    opacity: 0;
    transition: opacity 0.15s;
  }

  .sk-touch-layer:hover {
    opacity: 0.1;
  }

  .sk-touch-btn {
    width: 100%;
    height: 100%;
    cursor: pointer;
    background: transparent;
    border: none;
  }

  .sk-stats {
    position: relative;
    z-index: 30;
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
    pointer-events: auto;
  }

  .sk-stat-group {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .sk-stat-label {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.25rem;
  }

  .sk-stat-label-a {
    color: #60a5fa;
  }

  .sk-stat-label-b {
    color: #fb7185;
  }

  .sk-stat-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--bg-surface);
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
  }

  .sk-stat-value {
    font-size: 1.125rem;
    font-weight: 700;
    width: 1rem;
    text-align: center;
    color: var(--text-base);
  }

  .sk-stat-btn {
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.15s;
  }

  .sk-stat-btn-a {
    color: #2563eb;
  }

  .sk-stat-btn-a:hover {
    background-color: var(--bg-page);
  }

  .sk-stat-btn-b {
    color: #e11d48;
  }

  .sk-stat-btn-b:hover {
    background-color: var(--bg-page);
  }

  .sk-widget-footer {
    position: relative;
    z-index: 30;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding: 1rem;
    pointer-events: auto;
  }

  @media (min-width: 768px) {
    .sk-widget-footer {
      padding: 1.5rem;
    }
  }

  .sk-serve-btn {
    width: 3rem;
    height: 3rem;
    border-radius: 1rem;
    border: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    cursor: pointer;
    transition: background-color 0.15s;
  }

  .sk-serve-btn-a {
    background-color: rgb(219, 234, 254);
    color: #2563eb;
  }

  .sk-serve-btn-a:hover {
    background-color: rgb(191, 219, 254);
  }

  .sk-serve-btn-b {
    background-color: rgb(254, 205, 211);
    color: #e11d48;
  }

  .sk-serve-btn-b:hover {
    background-color: rgb(253, 164, 175);
  }

  .sk-serve-dot {
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 9999px;
    background-color: currentcolor;
  }

  .sk-serve-text {
    font-size: 0.5rem;
    font-weight: 700;
    text-transform: uppercase;
  }

  .sk-minus-btn {
    width: 4rem;
    height: 4rem;
    border-radius: 9999px;
    background-color: var(--bg-surface);
    border: 4px solid var(--bg-page);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    font-size: 1.875rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.1s;
  }

  .sk-minus-btn:active {
    transform: scale(0.95);
  }

  .sk-minus-btn-a {
    color: #3b82f6;
  }

  .sk-minus-btn-b {
    color: #f43f5e;
  }

  .sk-modal {
    position: fixed;
    inset: 0;
    z-index: 100;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
  }

  .sk-modal-box {
    background-color: var(--bg-surface);
    border-radius: 1.5rem;
    padding: 2rem;
    max-width: 24rem;
    width: 100%;
    text-align: center;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    border: 2px solid var(--border-color);
  }

  .sk-modal-trophy {
    margin-bottom: 1rem;
    color: #facc15;
    display: flex;
    justify-content: center;
    animation: sk-bounce 1s infinite;
  }

  @keyframes sk-bounce {
    0%,
    100% {
      transform: translateY(0);
      animation-timing-function: cubic-bezier(0.8, 0, 1, 1);
    }
    50% {
      transform: translateY(-25%);
      animation-timing-function: cubic-bezier(0, 0, 0.2, 1);
    }
  }

  .sk-modal-title {
    font-size: 1.875rem;
    font-weight: 900;
    color: var(--text-base);
    margin-bottom: 0.5rem;
  }

  .sk-modal-winner {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    overflow-wrap: break-word;
  }

  .sk-modal-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
  }

  .sk-modal-btn-new {
    width: 100%;
    padding: 1rem;
    background-color: var(--accent);
    color: white;
    border: none;
    border-radius: 0.75rem;
    font-weight: 700;
    font-size: 1.125rem;
    cursor: pointer;
    transition: opacity 0.15s, transform 0.1s;
  }

  .sk-modal-btn-new:hover {
    opacity: 0.9;
  }

  .sk-modal-btn-new:active {
    transform: scale(0.95);
  }

  .sk-modal-btn-continue {
    width: 100%;
    padding: 1rem;
    background-color: var(--bg-page);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.15s, transform 0.1s;
  }

  .sk-modal-btn-continue:hover {
    background-color: var(--bg-surface);
  }

  .sk-modal-btn-continue:active {
    transform: scale(0.95);
  }

  .theme-dark .sk-widget-a {
    background-color: rgba(59, 130, 246, 0.1);
    border-color: rgba(30, 58, 138, 0.3);
  }

  .theme-dark .sk-widget-b {
    background-color: rgba(244, 63, 94, 0.1);
    border-color: rgba(136, 19, 55, 0.3);
  }

  .theme-dark .sk-player-name-a {
    color: rgba(191, 219, 254, 0.5);
  }

  .theme-dark .sk-player-name-a:focus {
    color: #60a5fa;
  }

  .theme-dark .sk-player-name-b {
    color: rgba(253, 164, 175, 0.5);
  }

  .theme-dark .sk-player-name-b:focus {
    color: #fb7185;
  }

  .theme-dark .sk-score-a {
    color: #3b82f6;
  }

  .theme-dark .sk-score-b {
    color: #f43f5e;
  }

  .theme-dark .sk-serve-btn-a {
    background-color: rgba(30, 58, 138, 0.3);
  }

  .theme-dark .sk-serve-btn-a:hover {
    background-color: rgba(30, 58, 138, 0.5);
  }

  .theme-dark .sk-serve-btn-b {
    background-color: rgba(136, 19, 55, 0.3);
  }

  .theme-dark .sk-serve-btn-b:hover {
    background-color: rgba(136, 19, 55, 0.5);
  }

  .theme-dark .sk-btn-icon:hover {
    background-color: rgba(127, 29, 29, 0.2);
  }

  #scoreboard-app .sk-hidden {
    display: none;
  }

  #scoreboard-app .sk-serve-hidden {
    opacity: 0;
    transform: scale(0);
  }

  #scoreboard-app .sk-score-pop {
    transform: scale(1.1);
  }

  #scoreboard-app .sk-score-tiebreak {
    color: #f97316;
  }

  .sk-touch-layer-multi {
    position: absolute;
    inset: 0;
    z-index: 20;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1rem;
    gap: 0.5rem;
    opacity: 1;
    pointer-events: none;
  }

  @media (min-width: 768px) {
    .sk-touch-layer-multi {
      opacity: 0;
      pointer-events: auto;
    }

    .sk-touch-layer-multi:hover {
      opacity: 1;
    }
  }

  .sk-plus-btn {
    flex: none;
    height: 3.5rem;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 900;
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--text-base);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 0.75rem;
    cursor: pointer;
    transition: background-color 0.15s, transform 0.1s;
    pointer-events: auto;
  }

  .sk-plus-btn:hover {
    background-color: rgba(255, 255, 255, 0.4);
  }

  .sk-plus-btn:active {
    transform: scale(0.95);
  }

  .theme-dark .sk-plus-btn {
    background-color: rgba(15, 23, 42, 0.3);
    border-color: rgba(255, 255, 255, 0.1);
  }

  .theme-dark .sk-plus-btn:hover {
    background-color: rgba(30, 41, 59, 0.5);
  }