:root{
    --void:      #0b0b0c;
    --void-2:    #151516;
    --steel:     #201f20;
    --steel-2:   #2a2929;
    --signal:    #f20505;
    --signal-2:  #ff3b1f;
    --filament:  #ffb25e;
    --paper:     #f4f1ea;
    --paper-dim: #cfccc4;
    --line:      rgba(244,241,234,0.12);
  }

  *{ box-sizing:border-box; margin:0; padding:0; }
  html{ scroll-behavior:smooth; }
  body{
    background:var(--void);
    color:var(--paper);
    font-family:'Inter', sans-serif;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  ::selection{ background:var(--signal); color:var(--paper); }

  @media (prefers-reduced-motion: reduce){
    *{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; }
  }

  a{ color:inherit; text-decoration:none; }
  img{ max-width:100%; display:block; }

  .display{
    font-family:'Big Shoulders Display', sans-serif;
    font-weight:800;
    text-transform:uppercase;
    letter-spacing:0.01em;
    line-height:0.92;
  }
  .mono{
    font-family:'JetBrains Mono', monospace;
    letter-spacing:0.04em;
  }
  .eyebrow{
    font-family:'JetBrains Mono', monospace;
    font-size:0.72rem;
    letter-spacing:0.22em;
    text-transform:uppercase;
    color:var(--signal-2);
  }

  .wrap{
    max-width:1180px;
    margin:0 auto;
    padding:0 32px;
  }

  /* ---------- NAV ---------- */
  header{
    position:fixed;
    top:0; left:0; right:0;
    z-index:100;
    padding:20px 32px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    background:linear-gradient(to bottom, rgba(11,11,12,0.9), transparent);
    transition:background 0.3s ease, backdrop-filter 0.3s ease;
  }
  header.solid{
    background:rgba(11,11,12,0.92);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
  }
  .brand{
    display:flex;
    align-items:center;
    gap:10px;
  }
  .brand img{ height:30px; width:auto; filter:drop-shadow(0 0 6px rgba(242,5,5,0.5)); }
  .brand span{
    font-family:'Big Shoulders Display', sans-serif;
    font-weight:800;
    font-size:1.35rem;
    letter-spacing:0.03em;
    text-transform:uppercase;
  }
  nav ul{
    list-style:none;
    display:flex;
    gap:34px;
  }
  nav a{
    font-size:0.82rem;
    letter-spacing:0.08em;
    text-transform:uppercase;
    color:var(--paper-dim);
    position:relative;
    padding-bottom:4px;
  }
  nav a:hover{ color:var(--paper); }
  nav a::after{
    content:"";
    position:absolute;
    left:0; bottom:0;
    width:0; height:1px;
    background:var(--signal);
    transition:width 0.25s ease;
  }
  nav a:hover::after{ width:100%; }
  .nav-cta{
    border:1px solid var(--line);
    padding:9px 18px;
    border-radius:999px;
    font-size:0.78rem;
    letter-spacing:0.08em;
    text-transform:uppercase;
    transition:border-color 0.25s ease, box-shadow 0.25s ease;
  }
  .nav-cta:hover{ border-color:var(--signal); box-shadow:0 0 18px rgba(242,5,5,0.35); }
  .nav-links-mobile{ display:none; }

  /* ---------- HERO ---------- */
  .hero{
    min-height:100svh;
    display:flex;
    flex-direction:column;
    justify-content:center;
    position:relative;
    padding:140px 32px 80px;
    background:
      radial-gradient(ellipse 900px 500px at 50% 20%, rgba(242,5,5,0.10), transparent 70%),
      var(--void);
    overflow:hidden;
  }
  .hero-inner{
    max-width:1180px;
    margin:0 auto;
    width:100%;
    position:relative;
    z-index:2;
  }
  .hero .eyebrow{ margin-bottom:22px; display:flex; align-items:center; gap:10px; }
  .hero .eyebrow::before{
    content:"";
    width:7px; height:7px;
    border-radius:50%;
    background:var(--signal);
    box-shadow:0 0 10px 2px rgba(242,5,5,0.7);
  }
  h1.hero-title{
    font-size:clamp(3rem, 9vw, 7.2rem);
    color:var(--paper);
    max-width:14ch;
    display:flex;
    flex-direction:column;
  }
  h1.hero-title .title-line{
    line-height:0.92;
  }
  h1.hero-title .title-line:last-child{
    padding-top:0.32em;
  }
  h1.hero-title .bulb-i{
    position:relative;
    display:inline-block;
    color:var(--signal);
  }
  /* the dot of the "i" becomes a literal light */
  .bulb-dot{
    position:absolute;
    top:-0.34em;
    left:50%;
    transform:translateX(-50%);
    width:0.22em;
    height:0.22em;
    border-radius:50%;
    background:var(--paper);
    box-shadow:
      0 0 6px 2px rgba(255,255,255,0.9),
      0 0 30px 10px rgba(255,178,94,0.55),
      0 0 70px 26px rgba(242,5,5,0.35);
    transition:box-shadow 0.6s ease, background 0.6s ease, opacity 0.6s ease;
  }
  .hero-sub{
    margin-top:26px;
    max-width:44ch;
    font-size:1.08rem;
    line-height:1.65;
    color:var(--paper-dim);
  }
  .hero-actions{
    margin-top:44px;
    display:flex;
    align-items:center;
    gap:28px;
    flex-wrap:wrap;
  }
  .btn-primary{
    background:var(--signal);
    color:var(--paper);
    padding:15px 30px;
    border-radius:999px;
    font-size:0.85rem;
    letter-spacing:0.08em;
    text-transform:uppercase;
    font-weight:600;
    box-shadow:0 0 0 rgba(242,5,5,0);
    transition:box-shadow 0.3s ease, transform 0.2s ease, background 0.3s ease;
  }
  .btn-primary:hover{ box-shadow:0 0 32px rgba(242,5,5,0.55); transform:translateY(-1px); background:var(--signal-2); }

  /* -------- the switch (signature interaction) -------- */
  .switch-unit{
    display:flex;
    align-items:center;
    gap:12px;
  }
  .switch-label{
    font-family:'JetBrains Mono', monospace;
    font-size:0.72rem;
    letter-spacing:0.12em;
    text-transform:uppercase;
    color:var(--paper-dim);
  }
  .switch{
    position:relative;
    width:54px;
    height:30px;
    border-radius:999px;
    border:1px solid var(--line);
    background:var(--steel);
    cursor:pointer;
    flex:none;
  }
  .switch input{
    position:absolute;
    inset:0;
    opacity:0;
    cursor:pointer;
    margin:0;
  }
  .switch .knob{
    position:absolute;
    top:3px; left:3px;
    width:22px; height:22px;
    border-radius:50%;
    background:var(--paper-dim);
    transition:left 0.3s cubic-bezier(.65,.05,.36,1), background 0.3s ease, box-shadow 0.3s ease;
  }
  .switch input:checked ~ .knob{
    left:27px;
    background:var(--paper);
    box-shadow:0 0 14px 4px rgba(255,178,94,0.6);
  }

  /* dimmed / "off" state driven by body class */
  body.lights-off .hero{
    background:var(--void);
    transition:background 0.7s ease;
  }
  body.lights-off .bulb-dot{
    background:#3a3a3b;
    box-shadow:none;
  }
  body.lights-off h1.hero-title{
    color:#2c2c2d;
    transition:color 0.7s ease;
  }
  body.lights-off .hero .eyebrow::before{ box-shadow:none; background:#3a3a3b; }
  body.lights-off .hero-sub{ color:#4a4a4b; transition:color 0.7s ease; }
  h1.hero-title{ transition:color 0.7s ease; }

  .hero-scroll{
    position:absolute;
    bottom:36px;
    left:32px;
    display:flex;
    align-items:center;
    gap:10px;
    color:var(--paper-dim);
    font-size:0.7rem;
    letter-spacing:0.15em;
    text-transform:uppercase;
  }
  .hero-scroll span.line{
    width:26px; height:1px; background:var(--paper-dim);
    animation:pulse-line 2.2s ease-in-out infinite;
  }
  @keyframes pulse-line{ 0%,100%{opacity:0.3;} 50%{opacity:1;} }

  /* ---------- SECTION SHARED ---------- */
  section{ position:relative; }
  .section-pad{ padding:120px 32px; }
  .section-head{ max-width:640px; margin-bottom:64px; }
  .section-head .eyebrow{ margin-bottom:16px; }
  .section-head h2{
    font-size:clamp(2.1rem, 4.4vw, 3.3rem);
    color:var(--paper);
  }

  /* ---------- PHILOSOPHY ---------- */
  .philosophy{ background:var(--paper); color:var(--void); }
  .philosophy .eyebrow{ color:var(--signal); }
  .philosophy-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:80px;
    align-items:start;
  }
  .philosophy-photo{
    margin-top:32px;
    border-radius:6px;
    overflow:hidden;
    background:#fff;
  }
  .philosophy-photo img{ width:100%; height:auto; display:block; }
  .philosophy h2{
    font-size:clamp(2rem, 4vw, 2.9rem);
    color:var(--void);
    max-width:12ch;
  }
  .philosophy-copy p{
    font-size:1.05rem;
    line-height:1.75;
    color:#3a3733;
    margin-bottom:20px;
  }
  .philosophy-copy p:last-child{ margin-bottom:0; }
  .stat-row{
    display:flex;
    gap:48px;
    margin-top:48px;
    padding-top:32px;
    border-top:1px solid rgba(11,11,12,0.14);
  }
  .stat-row div b{
    display:block;
    font-family:'Big Shoulders Display', sans-serif;
    font-weight:800;
    font-size:2.2rem;
    color:var(--signal);
  }
  .stat-row div span{
    font-family:'JetBrains Mono', monospace;
    font-size:0.7rem;
    letter-spacing:0.1em;
    text-transform:uppercase;
    color:#6b6660;
  }

  /* ---------- COLLECTIONS ---------- */
  .collections{ background:var(--void); }
  .card-grid{
    display:grid;
    grid-template-columns:repeat(2, 1fr);
    gap:2px;
    background:var(--line);
    border:1px solid var(--line);
  }
  .light-card{
    background:var(--void-2);
    padding:44px 38px 36px;
    min-height:300px;
    display:flex;
    flex-direction:column;
    justify-content:space-between;
    position:relative;
    overflow:hidden;
    transition:background 0.35s ease;
  }
  .light-card::before{
    content:"";
    position:absolute;
    top:-40%; right:-20%;
    width:280px; height:280px;
    background:radial-gradient(circle, rgba(242,5,5,0.22), transparent 70%);
    opacity:0;
    transition:opacity 0.4s ease;
  }
  .light-card:hover::before{ opacity:1; }
  .light-card:hover{ background:#1a1919; }
  .card-top{ display:flex; justify-content:space-between; align-items:flex-start; position:relative; z-index:1;}
  .card-num{ font-family:'JetBrains Mono', monospace; font-size:0.75rem; color:var(--paper-dim); }
  .card-glyph{
    width:34px; height:34px;
    border-radius:50%;
    border:1px solid var(--line);
    display:flex; align-items:center; justify-content:center;
  }
  .card-glyph .dot{ width:6px; height:6px; border-radius:50%; background:var(--signal); box-shadow:0 0 8px 2px rgba(242,5,5,0.6); }
  .card-thumb{
    position:absolute;
    top:20px; right:24px;
    width:76px; height:76px;
    border-radius:8px;
    overflow:hidden;
    background:#f4f1ea;
    z-index:1;
  }
  .card-thumb img{
    width:100%; height:100%;
    object-fit:cover;
  }
  .light-card h3{
    font-family:'Big Shoulders Display', sans-serif;
    font-weight:800;
    font-size:1.9rem;
    text-transform:uppercase;
    margin-top:36px;
    position:relative; z-index:1;
  }
  .light-card p.desc{
    color:var(--paper-dim);
    font-size:0.92rem;
    line-height:1.6;
    margin-top:10px;
    max-width:34ch;
    position:relative; z-index:1;
  }
  .card-specs{
    display:flex;
    gap:18px;
    margin-top:22px;
    font-family:'JetBrains Mono', monospace;
    font-size:0.68rem;
    letter-spacing:0.04em;
    color:#8a8886;
    position:relative; z-index:1;
  }

  /* ---------- GALLERY ---------- */
  .gallery{ background:var(--void-2); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
  .gallery-grid{
    display:grid;
    grid-template-columns:repeat(4, 1fr);
    gap:2px;
    background:var(--line);
    border:1px solid var(--line);
  }
  .gallery-item{
    background:#f4f1ea;
    aspect-ratio:1;
    position:relative;
    overflow:hidden;
    display:flex;
    align-items:center;
    justify-content:center;
  }
  .gallery-item img{
    max-width:82%;
    max-height:82%;
    object-fit:contain;
    transition:transform 0.4s ease;
  }
  .gallery-item:hover img{ transform:scale(1.08); }
  .gallery-item span{
    position:absolute;
    left:0; right:0; bottom:0;
    background:linear-gradient(to top, rgba(11,11,12,0.82), transparent);
    color:var(--paper);
    font-family:'JetBrains Mono', monospace;
    font-size:0.68rem;
    letter-spacing:0.05em;
    text-transform:uppercase;
    padding:22px 12px 10px;
    text-align:center;
    opacity:0;
    transition:opacity 0.3s ease;
  }
  .gallery-item:hover span{ opacity:1; }

  /* ---------- PROCESS ---------- */
  .process{ background:var(--steel); }
  .process-list{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:1px;
    background:var(--line);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .process-item{
    background:var(--steel);
    padding:44px 34px;
  }
  .process-item .step-no{
    font-family:'Big Shoulders Display', sans-serif;
    font-weight:900;
    font-size:3.2rem;
    color:transparent;
    -webkit-text-stroke:1.5px var(--signal);
    line-height:1;
    margin-bottom:18px;
  }
  .process-item h4{
    font-family:'Big Shoulders Display', sans-serif;
    font-weight:800;
    font-size:1.3rem;
    text-transform:uppercase;
    margin-bottom:10px;
  }
  .process-item p{ color:var(--paper-dim); font-size:0.9rem; line-height:1.6; }

  /* ---------- SHOWCASE (CSS-drawn light study, no stock imagery) ---------- */
  .showcase{
    background:var(--void);
    padding:140px 32px;
    display:flex;
    justify-content:center;
  }
  .beam-stage{
    position:relative;
    width:100%;
    max-width:1180px;
    height:420px;
    border:1px solid var(--line);
    background:
      radial-gradient(circle at 50% 0%, rgba(255,178,94,0.14), transparent 55%),
      #0d0d0e;
    overflow:hidden;
    display:flex;
    align-items:flex-end;
    justify-content:center;
  }
  .beam-stage .fixture{
    position:absolute;
    top:0; left:50%;
    transform:translateX(-50%);
    width:2px; height:64px;
    background:linear-gradient(to bottom, var(--paper-dim), transparent);
  }
  .beam-stage .bulb-real{
    position:absolute;
    top:60px; left:50%;
    transform:translateX(-50%);
    width:14px; height:14px;
    border-radius:50%;
    background:var(--paper);
    box-shadow:0 0 20px 8px rgba(255,178,94,0.7), 0 0 90px 40px rgba(255,178,94,0.25);
    animation:flicker 6s ease-in-out infinite;
  }
  @keyframes flicker{
    0%,92%,100%{ opacity:1; }
    93%{ opacity:0.6; }
    94%{ opacity:1; }
    96%{ opacity:0.75; }
  }
  .beam-stage .cone{
    position:absolute;
    top:74px; left:50%;
    transform:translateX(-50%);
    width:640px; height:340px;
    background:conic-gradient(from 90deg at 50% 0%, transparent 60deg, rgba(255,178,94,0.16) 90deg, transparent 120deg);
  }
  .beam-stage .floor-glow{
    position:absolute;
    bottom:0; left:50%;
    transform:translateX(-50%);
    width:360px; height:70px;
    background:radial-gradient(ellipse, rgba(255,178,94,0.35), transparent 70%);
  }
  .showcase-caption{
    position:absolute;
    left:36px; bottom:30px;
    max-width:320px;
  }
  .showcase-caption .eyebrow{ margin-bottom:10px; }
  .showcase-caption p{ color:var(--paper-dim); font-size:0.88rem; line-height:1.6; }

  /* ---------- PROJECT PHOTO ---------- */
  .project-photo{
    position:relative;
    width:100%;
    height:min(46vw, 480px);
    overflow:hidden;
    line-height:0;
  }
  .project-photo img{
    width:100%;
    height:100%;
    object-fit:cover;
    display:block;
    filter:saturate(0.95);
  }
  .project-photo-caption{
    position:absolute;
    left:32px; bottom:28px;
    background:rgba(11,11,12,0.72);
    backdrop-filter:blur(6px);
    padding:16px 22px;
    border-radius:4px;
    max-width:320px;
  }
  .project-photo-caption p:last-child{
    color:var(--paper-dim);
    font-size:0.85rem;
    line-height:1.5;
    margin-top:6px;
  }

  /* ---------- SEGMENTS ---------- */
  .segments{ background:var(--void-2); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
  .tag-cloud{ display:flex; flex-wrap:wrap; gap:12px; }
  .tag-cloud span{
    font-family:'JetBrains Mono', monospace;
    font-size:0.78rem;
    letter-spacing:0.04em;
    color:var(--paper-dim);
    border:1px solid var(--line);
    border-radius:999px;
    padding:9px 18px;
    transition:border-color 0.2s ease, color 0.2s ease;
  }
  .tag-cloud span:hover{ border-color:var(--signal); color:var(--paper); }

  /* ---------- PARTNERS / CLIENTS ---------- */
  .partners{ background:var(--void); }
  .partners-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:80px;
  }
  .partners-h{ font-size:1.7rem; color:var(--paper); margin-top:10px; }
  .partners-copy{ color:var(--paper-dim); font-size:0.92rem; line-height:1.6; margin-top:14px; max-width:38ch; }
  .logo-strip{
    margin-top:26px;
    padding:22px;
    border-top:1px solid var(--line);
    padding-top:26px;
    background:#f4f1ea;
    border-radius:8px;
  }
  .logo-strip img{
    width:100%;
    height:auto;
    display:block;
    mix-blend-mode:multiply;
  }

  /* ---------- DOWNLOADS ---------- */
  .downloads{ background:var(--void); }
  .download-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:2px;
    background:var(--line);
    border:1px solid var(--line);
  }
  .download-card{
    background:var(--void-2);
    padding:40px;
    display:flex;
    align-items:center;
    gap:24px;
    transition:background 0.3s ease;
  }
  .download-card:hover{ background:#1a1919; }
  .download-icon{
    flex:none;
    width:56px; height:56px;
    border-radius:50%;
    border:1px solid var(--line);
    display:flex;
    align-items:center;
    justify-content:center;
    color:var(--signal);
    transition:border-color 0.3s ease, box-shadow 0.3s ease;
  }
  .download-card:hover .download-icon{ border-color:var(--signal); box-shadow:0 0 18px rgba(242,5,5,0.35); }
  .download-info{ flex:1; min-width:0; }
  .download-info h3{
    font-family:'Big Shoulders Display', sans-serif;
    font-weight:800;
    font-size:1.4rem;
    text-transform:uppercase;
    color:var(--paper);
  }
  .download-info p{
    color:var(--paper-dim);
    font-size:0.88rem;
    line-height:1.5;
    margin-top:6px;
  }
  .download-meta{
    display:inline-block;
    margin-top:10px;
    font-size:0.68rem;
    letter-spacing:0.06em;
    color:#7a7876;
  }
  .download-btn{
    flex:none;
    border:1px solid var(--line);
    padding:11px 22px;
    border-radius:999px;
    font-size:0.78rem;
    letter-spacing:0.06em;
    text-transform:uppercase;
    color:var(--paper);
    transition:border-color 0.25s ease, background 0.25s ease;
  }
  .download-card:hover .download-btn{ border-color:var(--signal); background:var(--signal); }

  /* ---------- CONTACT ---------- */
  .contact{ background:var(--paper); color:var(--void); }
  .contact-grid{
    display:grid;
    grid-template-columns:1.1fr 0.9fr;
    gap:80px;
  }
  .contact h2{ color:var(--void); font-size:clamp(2.1rem,4.4vw,3.2rem); max-width:11ch; }
  .contact-lead{ margin-top:20px; color:#4a4640; line-height:1.7; max-width:42ch; }
  .contact-list{ margin-top:44px; }
  .contact-list a{
    display:block;
    font-family:'Big Shoulders Display', sans-serif;
    font-weight:700;
    font-size:1.5rem;
    padding:16px 0;
    border-bottom:1px solid rgba(11,11,12,0.14);
    transition:color 0.2s ease, padding-left 0.2s ease;
  }
  .contact-list a:hover{ color:var(--signal); padding-left:8px; }
  .address-block{ margin-top:34px; display:flex; gap:40px; flex-wrap:wrap; }
  .address-block p{ font-size:0.88rem; line-height:1.6; color:#4a4640; }
  .address-block b{ color:var(--void); font-size:0.72rem; letter-spacing:0.08em; text-transform:uppercase; font-family:'JetBrains Mono', monospace; }
  .contact-form{
    background:var(--void);
    color:var(--paper);
    padding:40px;
    border-radius:4px;
  }
  .contact-form .eyebrow{ margin-bottom:20px; }
  .field{ margin-bottom:20px; }
  .field label{
    display:block;
    font-family:'JetBrains Mono', monospace;
    font-size:0.7rem;
    letter-spacing:0.1em;
    text-transform:uppercase;
    color:var(--paper-dim);
    margin-bottom:8px;
  }
  .field input, .field textarea{
    width:100%;
    background:transparent;
    border:none;
    border-bottom:1px solid var(--line);
    color:var(--paper);
    font-family:'Inter', sans-serif;
    font-size:0.95rem;
    padding:8px 2px;
    resize:none;
  }
  .field input:focus, .field textarea:focus{
    outline:none;
    border-bottom-color:var(--signal);
  }
  .contact-form .btn-primary{ width:100%; text-align:center; margin-top:8px; border:none; cursor:pointer; }

  :focus-visible{ outline:2px solid var(--filament); outline-offset:2px; }

  /* ---------- FOOTER ---------- */
  footer{
    background:var(--void);
    padding:48px 32px 30px;
    border-top:1px solid var(--line);
  }
  .footer-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    flex-wrap:wrap;
    gap:20px;
  }
  .footer-inner .brand img{ height:22px; }
  .footer-note{
    font-family:'JetBrains Mono', monospace;
    font-size:0.7rem;
    color:#6b6a6c;
    letter-spacing:0.04em;
  }

  @media (max-width: 860px){
    nav ul{ display:none; }
    .nav-cta{ display:none; }
    .philosophy-grid, .contact-grid{ grid-template-columns:1fr; gap:44px; }
    .card-grid{ grid-template-columns:1fr; }
    .gallery-grid{ grid-template-columns:repeat(2, 1fr); }
    .download-grid{ grid-template-columns:1fr; }
    .download-card{ flex-wrap:wrap; }
    .process-list{ grid-template-columns:1fr; }
    .stat-row{ gap:32px; flex-wrap:wrap; }
    .beam-stage{ height:340px; }
    .beam-stage .cone{ width:420px; }
  }