body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #050918;
    color: #e0e6ff;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  #redrawButton {
    display: none !important;
  }

  a:link,
  a:visited,
  a:hover,
  a:active {
    color: inherit !important;
    text-decoration: underline !important;
  }

  .top-bar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2rem;
    width: 100%;
    max-width: 1400px;
    padding: 1rem;
    box-sizing: border-box;
  }

  header {
    margin: 0;
    text-align: left;
  }

  header h1 {
    margin: 0 0 0.3rem 0;
  }

  .controls {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: rgba(12, 18, 40, 0.95);
    border-radius: 1rem;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
    align-items: flex-start;
  }

  .main-controls {
    margin-bottom: 0.4rem;
  }

  .subcontrols {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
    gap: 0.75rem;
  }

  .control-stack {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    min-width: 0;
  }

  .controls label {
    font-size: 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
  }

  .controls input[type="number"],
  .controls input[type="datetime-local"],
  .controls input[type="text"] {
    padding: 0.25rem 0.5rem;
    border-radius: 0.5rem;
    border: 1px solid #2b3560;
    background: #070b18;
    color: #e0e6ff;
    min-width: 5rem;
  }

  .controls input[type="range"] {
    width: 160px;
  }

  .slider-label span {
    font-size: 1.1rem;
    opacity: 0.8;
  }

  #dayOfYearSlider {
  width: 180px;
}
  
  .controls button {
    padding: 0.4rem 0.9rem;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    background: linear-gradient(135deg, #440000, #aa0000);
color: #ffe7e7;

    /* background: linear-gradient(135deg, #1133dd, #13a1ff); */
    /* color: white; */
    font-weight: 600;
    letter-spacing: 0.02em;
  }

  .controls button:hover {
    filter: brightness(1.1);
  }

  .subpanel {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.4rem 0.6rem;
    border-radius: 0.6rem;
    background: rgba(8, 12, 28, 0.85);
    border: 1px solid rgba(60, 80, 140, 0.6);
    font-size: 1.1rem;
  }

  .subpanel-title {
    font-size: 1.1rem;
    font-weight: 600;
    opacity: 0.85;
    margin-bottom: 0.15rem;
  }

  .subpanel-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 0.8rem;
    align-items: center;
  }

  .subpanel-row label {
    flex-direction: row;
    align-items: center;
    gap: 0.3rem;
    font-size: 1.1rem;
  }

  .ss-dropdown {
    position: relative;
    display: inline-block;
  }

  .ss-dropdown-toggle {
    padding: 0.35rem 0.8rem;
    border-radius: 999px;
    border: 1px solid #2b3560;
    background: #070b18;
    color: #e0e6ff;
    cursor: pointer;
    font-size: 1rem;
    min-width: 14rem;
    text-align: left;
    white-space: nowrap;
    max-width: 260px;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .ss-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 0.25rem;
    min-width: 14rem;
    background: rgba(10, 14, 30, 0.98);
    border-radius: 0.75rem;
    border: 1px solid rgba(60, 80, 140, 0.8);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.8);
    padding: 0.4rem 0.75rem 0.55rem;
    display: none;
    z-index: 20;
  }

  .ss-dropdown.open .ss-dropdown-menu {
    display: block;
  }

  .ss-dropdown-menu label {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.15rem 0;
    font-size: 0.95rem;
    cursor: pointer;
  }

  .ss-dropdown-menu input[type="checkbox"] {
    margin: 0;
  }

  canvas {
    /* border-radius: 1rem; */
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.6);
    background: #000014;
    max-width: 95vw;
    margin-bottom: 1.25rem;
  }

  .help-text {
    font-size: 1.1rem;
    opacity: 0.8;
    margin-top: 0.3rem;
  }


  @media (max-width: 900px) {
    .top-bar {
      flex-direction: column;
      align-items: stretch;
    }

    header {
      text-align: center;
    }

    .control-stack {
      width: 100%;
    }
  }

.ui-toggle-button {
  position: fixed;
  top: 0.6rem;
  right: 0.8rem;
  z-index: 100;

  padding: 0.35rem 0.75rem;
  border-radius: 999px;

  background: rgba(25, 35, 80, 0.85);
  border: 1px solid rgba(120, 150, 255, 0.75);

  color: #ffffff;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.5px;

  cursor: pointer;
  box-shadow: 0 0 10px rgba(100, 140, 255, 0.6);   /* glow */
  backdrop-filter: blur(4px);                     /* subtle glass look */
}
.ui-toggle-button:hover {
  background: rgba(50, 70, 150, 0.9);
  box-shadow: 0 0 14px rgba(150, 180, 255, 0.9);
}


/* When collapsed, hide everything above the canvas */
body.ui-collapsed .top-bar {
  display: none;
}
  

.info-hover {
  position: relative;
  display: inline-block;
}

.info-box {
  position: absolute;
  top: 120%;
  left: 0;
  background: rgba(20, 25, 50, 0.85);
  color: #e0e6ff;
  padding: 0.6rem 0.8rem;
  border-radius: 0.5rem;
  border: 1px solid rgba(100, 140, 200, 0.4);
  font-size: 0.9rem;
  width: 220px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(6px);
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 200;
}

.info-hover:hover .info-box {
  opacity: 1;
  transform: translateY(0);
}