:root {
    --yod-yellow: #ffd60d;
    --black: #000000;
    --page-bg: #444444;
    --nav-h-desktop: 2.875rem;
    --nav-h-mobile: 4rem;
  }
  
  html,
  body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--page-bg);
    -webkit-user-select: none;
    user-select: none;
    font-size: 16px;
  }
  
  body.overlay-open {
    overflow: hidden;
  }
  
  canvas {
    display: block;
    width: 100%;
    height: 100%;
    cursor: grab;
    touch-action: manipulation;
  }
  
  canvas:active {
    cursor: grabbing;
  }
  
  /* --------------------------
     NAV
  --------------------------- */
  
  .yod-nav {
    position: fixed;
    inset: 0 0 auto 0;
    width: 100%;
    height: var(--nav-h-desktop);
    background: var(--yod-yellow);
    color: var(--black);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 2rem 0.5rem 1rem;
    box-sizing: border-box;
    z-index: 30;
  }
  
  .nav-left,
  .nav-right {
    display: flex;
    align-items: center;
  }
  
  .nav-left {
    min-width: 0;
    flex: 0 1 auto;
    gap: 0.55rem;
  }
  
  .brand-trigger,
  .about-close,
  .sound-toggle {
    touch-action: manipulation;
  }
  
  .brand-trigger {
    display: grid;
    grid-template-columns: auto auto;
    align-items: center;
    column-gap: 0.55rem;
    padding: 0;
    margin: 0;
    border: 0;
    background: transparent;
    color: var(--black);
    cursor: pointer;
    white-space: nowrap;
    text-align: left;
  }
  
  .brand-sub {
    padding-top: 0.05rem;
    display: inline-block;
    align-self: center;
    font-family: "degular-mono", monospace;
    font-size: 0.55rem;
    line-height: 1.05;
    text-align: left;
    white-space: nowrap;
  }
  
  .brand-main {
    position: relative;
    display: inline-block;
    font-family: "Terminal Grotesque", sans-serif;
    font-size: 1.2rem;
    line-height: 1;
  }
  
  .brand-sub-break {
    display: inline;
  }
  
  .brand-underline {
    position: absolute;
    left: 0;
    bottom: -0.3125rem;
    width: 100%;
    height: 0.125rem;
    background: var(--black);
    transform: scaleX(1);
    transform-origin: left center;
    transition:
      height 180ms ease,
      bottom 180ms ease,
      opacity 180ms ease;
    pointer-events: none;
    opacity: 1;
  }
  
  .brand-trigger:hover .brand-main .brand-underline,
  .brand-trigger:focus-visible .brand-main .brand-underline {
    height: 0.16rem;
    bottom: -0.34rem;
    opacity: 0.92;
  }
  
  .brand-trigger:focus-visible {
    outline: none;
  }
  
  .sound-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    border: 0;
    border-radius: 999px;
    background: #ffffff;
    cursor: pointer;
    flex: 0 0 auto;
  }
  
  .sound-toggle-icon {
    width: 1.45rem;
    height: 1.45rem;
    display: block;
    object-fit: contain;
    pointer-events: none;
  }
  
  .sound-icon-off {
    display: none;
  }
  
  .sound-toggle.is-muted .sound-icon-on {
    display: none;
  }
  
  .sound-toggle.is-muted .sound-icon-off {
    display: block;
  }
  
  .nav-center {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-family: "Terminal Grotesque", sans-serif;
    font-size: 1.2rem;
    line-height: 1;
    white-space: nowrap;
    pointer-events: none;
  }
  
  .nav-right {
    display: flex;
    align-items: center;
  }
  
/* --------------------------
   EXPERIMENT DROPDOWN
--------------------------- */

.experiment-menu {
    position: relative;
    align-self: stretch;
    display: flex;
    align-items: center;
  }
  
  .experiment-trigger {
    height: 100%;
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--black);
    font-family: "degular-mono", monospace;
    font-size: 0.875rem;
    line-height: 1;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.4rem;
  }
  
  .experiment-arrow {
    font-size: 0.72rem;
    line-height: 1;
    transform: translateY(-0.04rem);
    transition: transform 180ms ease;
  }
  
  .experiment-menu.is-open .experiment-arrow {
    transform: translateY(-0.04rem) rotate(180deg);
  }
  
  .experiment-dropdown {
    position: fixed;
    top: var(--nav-h-desktop);
    right: 0.75rem;
    width: 9.5rem;
    background: var(--yod-yellow);
    padding: 0.75rem 0.8rem 0.85rem;
    box-sizing: border-box;
    display: none;
    z-index: 60;
  }
  
  .experiment-menu.is-open .experiment-dropdown {
    display: block;
  }
  
  .experiment-option {
    display: block;
    text-align: left;
    font-family: "degular-mono", monospace;
    font-size: 0.82rem;
    line-height: 1;
    font-weight: 700;
    color: rgba(0, 0, 0, 0.5);
    text-decoration: none;
    padding-bottom: 0.6rem;
    margin-bottom: 0.6rem;
    border-bottom: 0.1rem solid var(--black);
  }
  
  .experiment-option:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: 0;
  }
  
  .experiment-option.active-option {
    color: rgba(0, 0, 0, 1);
  }
  
  .experiment-option:hover {
    opacity: 0.75;
  }
  
/* --------------------------
   OVERLAY
--------------------------- */

.about-overlay {
    position: fixed;
    inset: 0;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 260ms ease, visibility 260ms ease;
  }
  
  .about-overlay.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
  
  .about-backdrop {
    position: absolute;
    inset: 0;
    background-image: url("assets/images/about-bg.jpg");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    filter: brightness(0.5);
    transform: scale(1.03);
    opacity: 0;
    transition: transform 420ms ease, opacity 260ms ease;
  }
  
  .about-overlay.is-open .about-backdrop {
    transform: scale(1);
    opacity: 1;
  }
  
  .about-panel {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    padding: 4rem 1.5rem 2rem;
  }
  
  .about-close {
    position: absolute;
    top: 4rem;
    left: 50%;
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: pointer;
    opacity: 0;
    z-index: 2;
    transform: translateX(-50%) scale(0.96);
    transition: opacity 220ms ease, transform 280ms ease;
  }
  
  .about-close span {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 2.1rem;
    height: 0.14rem;
    background: var(--yod-yellow);
    border-radius: 999px;
    transform-origin: center;
  }
  
  .about-close span:first-child {
    transform: translate(-50%, -50%) rotate(45deg);
  }
  
  .about-close span:last-child {
    transform: translate(-50%, -50%) rotate(-45deg);
  }
  
  .about-overlay.is-open .about-close {
    opacity: 1;
    transform: translateX(-50%) scale(1);
  }
  
  .about-close:hover {
    transform: translateX(-50%) scale(1.06);
  }
  
  .about-content {
    position: relative;
    z-index: 2;
    width: min(100%, 30rem);
    max-height: calc(100vh - 8rem);
    overflow-y: auto;
    text-align: center;
    color: var(--yod-yellow);
    padding: 0 1rem;
    box-sizing: border-box;
    opacity: 0;
    transform: translateY(0.625rem) scale(0.985);
    transition: opacity 240ms ease, transform 320ms ease;
  }
  
  .about-overlay.is-open .about-content {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  
  .about-title {
    margin: 0 0 1.5rem;
    font-family: "Terminal Grotesque", sans-serif;
    font-size: clamp(2.2rem, 4vw, 2.75rem);
    line-height: 0.95;
    font-weight: 300;
  }
  
  .about-body {
    font-family: "dejanire-text", serif;
    font-size: clamp(1rem, 2vw, 1.125rem);
    line-height: 1.28;
  }
  
  .about-body p {
    margin: 0 0 1.625rem;
  }
  
  .about-body em {
    font-style: italic;
  }
  
  .about-body a,
  .about-body a:visited,
  .about-body a:active {
    color: var(--yod-yellow);
    font-family: inherit;
    font-size: inherit;
    font-weight: inherit;
    line-height: inherit;
    text-decoration: underline;
    text-underline-offset: 0.08em;
  }
  
  .about-body a:hover {
    opacity: 0.5;
  }
  
  /* --------------------------
     MOBILE
  --------------------------- */
  
  @media (max-width: 700px) {
    html {
      font-size: 15px;
    }
  
    .yod-nav {
      height: var(--nav-h-mobile);
      padding: 0 0.9rem;
    }
  
    .nav-left {
      flex: 1 1 auto;
      min-width: 0;
      gap: 0.5rem;
    }
  
    .brand-main {
      font-size: 1.72rem;
      line-height: 0.88;
    }
  
    .brand-sub {
      font-size: 0.5rem;
      line-height: 1.04;
      white-space: normal;
    }
  
    .brand-sub-break {
      display: block;
    }
  
    .sound-toggle {
      display: inline-flex;
      width: 2.3rem;
      height: 2.3rem;
    }
  
    .sound-toggle-icon {
      width: 1.25rem;
      height: 1.25rem;
    }
  
    .nav-center {
      display: none;
    }
  
    .nav-right {
      flex: 0 0 auto;
      text-align: right;
    }
    .experiment-trigger {
        font-size: 0.7rem;
        line-height: 1.05;
        text-align: right;
        white-space: nowrap;
      }
      
      .experiment-dropdown {
        width: 8rem;
        right: 0;
        margin-top: 0.3rem;
        padding: 0.7rem 0.75rem 0.8rem;
      }
      
      .experiment-option {
        font-size: 0.76rem;
        padding-bottom: 0.55rem;
        margin-bottom: 0.55rem;
      }
      .about-panel {
        padding: 4.5rem 1rem 2rem;
      }
      
      .about-close {
        top: 1.75rem;
        width: 2.25rem;
        height: 2.25rem;
      }
      
      .about-close span {
        width: 1.9rem;
      }
      
      .about-content {
        width: 100%;
        max-width: 22rem;
        max-height: calc(100vh - 7rem);
        padding: 0 0.75rem;
      }
      
      .about-title {
        font-size: clamp(2.4rem, 9vw, 3rem);
        margin-bottom: 1.2rem;
      }
      
      .about-body {
        font-size: 0.95rem;
        line-height: 1.2;
      }
      
      .about-body p {
        margin-bottom: 1.35rem;
      }
  }
.experiment-option[href="weather-windows.html"]{text-transform:uppercase}