:root {
    --sim-primary: #06c;
    --sim-secondary: #60c;
    --sim-accent: #2c0;
    --sim-text: #0f172a;
    --sim-text-muted: #475569;
    --sim-bg: #fff;
    --sim-bg-secondary: #f8fafc;
    --sim-bg-tertiary: #f1f5f9;
    --sim-border: #e2e8f0;
    --sim-glow-primary: rgba(0, 102, 204, 0.3);
    --sim-glow-accent: rgba(34, 204, 0, 0.3);
  }

  .theme-dark {
    --sim-primary: #00f2ff;
    --sim-secondary: #7000ff;
    --sim-accent: #39ff14;
    --sim-text: #fff;
    --sim-text-muted: #a0aec0;
    --sim-bg: #12141d;
    --sim-bg-secondary: #1c1f2e;
    --sim-bg-tertiary: #0a0b10;
    --sim-border: #2d3748;
    --sim-glow-primary: rgba(0, 242, 255, 0.5);
    --sim-glow-accent: rgba(57, 255, 20, 0.4);
  }

  .simulation-app {
    padding: 0;
    border-radius: 28px;
    background: var(--sim-bg);
    border: 1px solid var(--sim-border);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    max-width: 850px;
  }

  .simulation-header {
    padding: 2.5rem;
    background: linear-gradient(135deg, var(--sim-bg-secondary) 0%, var(--sim-bg) 100%);
    border-bottom: 2px solid var(--sim-border);
    text-align: center;
  }

  .simulation-header h2 {
    font-size: 1.5rem;
    margin: 0;
    color: var(--sim-primary);
    text-transform: uppercase;
    letter-spacing: 2px;
  }

  .simulation-main {
    padding: 2.5rem;
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .parameter-card {
    background: var(--sim-bg-secondary);
    padding: 1.5rem;
    border-radius: 20px;
    border: 1px solid var(--sim-border);
    transition: transform 0.2s ease, border-color 0.2s ease;
  }

  .parameter-card:focus-within {
    border-color: var(--sim-primary);
    transform: translateY(-2px);
  }

  .label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
  }

  .label-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
  }

  .label-info label {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--sim-text);
  }

  .helper-text {
    font-size: 0.85rem;
    color: var(--sim-text-muted);
    margin-bottom: 1.5rem;
    display: block;
    line-height: 1.6;
  }

  .control-row {
    display: flex;
    align-items: center;
    gap: 1.5rem;
  }

  .slider-container {
    flex: 1;
  }

  input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 12px;
    background: var(--sim-bg-tertiary);
    border-radius: 10px;
    outline: none;
    border: 1px solid var(--sim-border);
  }

  input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 28px;
    height: 28px;
    background: var(--sim-primary);
    border: 4px solid var(--sim-bg-secondary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 15px var(--sim-glow-primary);
  }

  input[type="range"]::-moz-range-thumb {
    width: 28px;
    height: 28px;
    background: var(--sim-primary);
    border: 4px solid var(--sim-bg-secondary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 15px var(--sim-glow-primary);
  }

  .value-display {
    background: var(--sim-bg-tertiary);
    border: 1px solid var(--sim-primary);
    color: var(--sim-primary);
    padding: 0.5rem 1rem;
    border-radius: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    min-width: 80px;
    text-align: center;
  }

  .results-section {
    padding: 3rem;
    background: var(--sim-bg-tertiary);
    border-top: 2px solid var(--sim-border);
    text-align: center;
  }

  .probability-ring {
    position: relative;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 2rem;
  }

  .probability-number {
    font-size: 5rem;
    font-weight: 950;
    color: var(--sim-accent);
    text-shadow: 0 0 30px var(--sim-glow-accent);
    line-height: 1;
  }

  .verdict-box {
    max-width: 500px;
    margin: 0 auto;
  }

  .verdict-title {
    color: var(--sim-text);
    font-size: 1.25rem;
    font-weight: 800;
    margin-bottom: 1rem;
    text-transform: uppercase;
  }

  .verdict-detail {
    color: var(--sim-text-muted);
    font-size: 1rem;
    line-height: 1.6;
  }

  @media (max-width: 640px) {
    .simulation-main,
    .results-section {
      padding: 1.5rem;
    }

    .probability-number {
      font-size: 3.5rem;
    }

    .simulation-app {
      border-radius: 16px;
    }
  }

  @media (min-width: 1025px) {
    .simulation-app {
      max-width: 700px;
      margin: 0 auto;
    }
  }