.llm-root {
    --llm-card-bg: rgba(255, 255, 255, 0.9);
    --llm-card-border: rgba(15, 23, 42, 0.05);
    --llm-text: #1e293b;
    --llm-muted: #64748b;
    --llm-accent: #6366f1;
    --llm-input-bg: #f8fafc;
    --llm-input-border: #e2e8f0;
    --llm-panel-bg: #f8fafc;
    --llm-panel-border: #f1f5f9;
    --llm-divider: #e2e8f0;
    --llm-total-from: #4f46e5;
    --llm-total-to: #9333ea;
  }

  .theme-dark .llm-root {
    --llm-card-bg: rgba(15, 23, 42, 0.9);
    --llm-card-border: rgba(255, 255, 255, 0.1);
    --llm-text: #f1f5f9;
    --llm-muted: #94a3b8;
    --llm-input-bg: #1e293b;
    --llm-input-border: #334155;
    --llm-panel-bg: rgba(30, 41, 59, 0.5);
    --llm-panel-border: rgba(51, 65, 85, 0.5);
    --llm-divider: #334155;
    --llm-total-from: #818cf8;
    --llm-total-to: #c084fc;
  }

  .llm-glow-wrap {
    position: relative;
  }

  .llm-glow {
    position: absolute;
    inset: -4px;
    background: linear-gradient(to right, #6366f1, #a855f7, #ec4899);
    border-radius: 1.25rem;
    filter: blur(8px);
    opacity: 0.25;
    transition: opacity 1s;
  }

  .llm-glow-wrap:hover .llm-glow {
    opacity: 0.5;
    transition-duration: 0.2s;
  }

  .llm-card {
    position: relative;
    background: var(--llm-card-bg);
    backdrop-filter: blur(12px);
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    border: 1px solid var(--llm-card-border);
    color: var(--llm-text);
  }

  .llm-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  @media (max-width: 640px) {
    .llm-grid {
      grid-template-columns: 1fr;
    }
  }

  .llm-controls {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
  }

  .llm-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--llm-muted);
    margin-bottom: 0.5rem;
  }

  .llm-select,
  .llm-input {
    display: block;
    width: 100%;
    border-radius: 0.5rem;
    border: 1px solid var(--llm-input-border);
    background: var(--llm-input-bg);
    color: var(--llm-text);
    font-size: 0.875rem;
    padding: 0.625rem;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    box-sizing: border-box;
  }

  .llm-select:focus,
  .llm-input:focus {
    outline: 2px solid var(--llm-accent);
    outline-offset: 2px;
    border-color: var(--llm-accent);
  }

  .llm-tokens-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  .llm-word-hint {
    margin-top: 0.25rem;
    font-size: 0.75rem;
    color: var(--llm-muted);
  }

  .llm-slider-row {
    display: flex;
    align-items: center;
    gap: 1rem;
  }

  .llm-slider {
    flex: 1;
    accent-color: var(--llm-accent);
    cursor: pointer;
  }

  .llm-req-num {
    width: 6rem;
    border-radius: 0.5rem;
    border: 1px solid var(--llm-input-border);
    background: var(--llm-input-bg);
    color: var(--llm-text);
    font-size: 0.875rem;
    padding: 0.5rem;
    text-align: center;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  }

  .llm-req-num:focus {
    outline: 2px solid var(--llm-accent);
    outline-offset: 2px;
  }

  .llm-results {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1.5rem;
    background: var(--llm-panel-bg);
    border-radius: 0.75rem;
    padding: 1.5rem;
    border: 1px solid var(--llm-panel-border);
  }

  .llm-stat-title {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--llm-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-align: center;
    margin: 0 0 0.5rem;
  }

  .llm-cost-val {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--llm-text);
    text-align: center;
  }

  .llm-divider-wrap {
    position: relative;
    height: 1px;
    background: var(--llm-divider);
  }

  .llm-divider-line {
    position: absolute;
    inset: 0;
    background: var(--llm-divider);
  }

  .llm-divider-label {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    background: var(--llm-panel-bg);
    padding: 0 0.5rem;
    font-size: 0.75rem;
    color: var(--llm-muted);
    white-space: nowrap;
  }

  .llm-total-title {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--llm-accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-align: center;
    margin: 0 0 0.5rem;
  }

  .llm-total-val {
    font-size: 3rem;
    font-weight: 900;
    text-align: center;
    background: linear-gradient(to right, var(--llm-total-from), var(--llm-total-to));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }

  .llm-bar-section {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }

  .llm-bar-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--llm-muted);
  }

  .llm-bar-track {
    height: 0.5rem;
    background: var(--llm-divider);
    border-radius: 9999px;
    overflow: hidden;
    display: flex;
  }

  .llm-bar-input {
    background: #3b82f6;
    height: 100%;
    transition: width 0.5s;
  }

  .llm-bar-output {
    background: #22c55e;
    height: 100%;
    transition: width 0.5s;
  }