*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

  :root {
    --bg: #f2f2f2;
    --surface: #080d1a;
    --border: rgba(255,255,255,0.07);
    --accent: #00d4ff;
    --accent2: #7b5ea7;
    --accent-glow: rgba(0, 212, 255, 0.2);
    --text: #dce8f5;
    --muted: #ffffff;
    --hover-bg: rgba(0, 212, 255, 0.07);
  }

  body {
    background: var(--bg);
    font-family: 'Sora', sans-serif;
    color: 000000;

    /*min-height: 100vh; - footer code */

    display: flex;
    flex-direction: column;
    min-height: 100vh;

  }

  header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(4, 7, 15, 0.82);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
  }

  header::before {
    content: '';
    display: block;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent2), var(--accent), var(--accent2), transparent);
    opacity: 0.7;
  }

  .header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
  }

  .logo {
    font-family: 'Space Mono', monospace;
    font-weight: 700;
    font-size: 1.8rem;
    color: var(--text);
    text-decoration: none;
    white-space: nowrap;
    display: flex;
    align-items: center;
  }

  .logo .bit { color: var(--accent); }
  .logo .dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    margin: 0 2px;
    box-shadow: 0 0 8px var(--accent);
    vertical-align: middle;
    position: relative;
    top: -1px;
  }

  nav {
    display: flex;
    align-items: center;
    gap: 0.1rem;
  }

  nav a {
    font-family: 'Sora', sans-serif;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--muted);
    text-decoration: none;
    padding: 0.42rem 0.72rem;
    border-radius: 6px;
    transition: color 0.2s, background 0.2s;
    white-space: nowrap;
    position: relative;
  }

  nav a:hover { color: var(--accent); background: var(--hover-bg); }

  nav a.active { color: var(--accent); }

  nav a.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 50%;
    height: 2px;
    background: var(--accent);
    border-radius: 2px 2px 0 0;
    box-shadow: 0 0 8px var(--accent-glow);
  }

  nav a.cta {
    color: var(--accent);
    border: 1px solid rgba(0,212,255,0.3);
    background: rgba(0,212,255,0.06);
    margin-left: 0.4rem;
    padding: 0.38rem 0.9rem;
  }

  nav a.cta:hover {
    background: rgba(0,212,255,0.14);
    border-color: var(--accent);
    box-shadow: 0 0 14px var(--accent-glow);
  }

  nav a.cta::after { display: none; }

  .hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    background: none;
    border: 1px solid var(--border);
    border-radius: 7px;
    cursor: pointer;
    padding: 0 8px;
    transition: border-color 0.2s, box-shadow 0.2s;
  }

  .hamburger:hover { border-color: var(--accent); box-shadow: 0 0 12px var(--accent-glow); }

  .hamburger span {
    display: block;
    height: 1.5px;
    background: var(--text);
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
  }

  .hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
  .hamburger.open span:nth-child(2) { opacity: 0; }
  .hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

  .mobile-nav {
    display: none;
    flex-direction: column;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.35s cubic-bezier(0.4,0,0.2,1);
  }

  .mobile-nav.open { max-height: 420px; }

  .mobile-nav a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--muted);
    text-decoration: none;
    padding: 0.85rem 1.5rem;
    border-bottom: 1px solid var(--border);
    transition: color 0.2s, background 0.2s, padding-left 0.2s;
    display: flex;
    align-items: center;
    gap: 0.75rem;
  }

  .mobile-nav a:last-child { border-bottom: none; }

  .mobile-nav a::before {
    content: '›';
    font-size: 1rem;
    color: var(--accent);
    opacity: 0;
    transition: opacity 0.2s;
    font-family: 'Space Mono', monospace;
  }

  .mobile-nav a:hover, .mobile-nav a.active {
    color: var(--accent);
    background: var(--hover-bg);
    padding-left: 1.75rem;
  }

  .mobile-nav a:hover::before, .mobile-nav a.active::before { opacity: 1; }

  @media (max-width: 760px) {
    nav { display: none; }
    .hamburger { display: flex; }
    .mobile-nav { display: flex; }
  }

  .demo {
    max-width: 680px;
    margin: 6rem auto;
    padding: 0 1.5rem;
    text-align: center;
  }

  .demo h1 {
    font-family: 'Space Mono', monospace;
    font-size: 1.0rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.03em;
  }

  .demo h1 em { font-style: normal; color: var(--accent); text-shadow: 0 0 30px var(--accent-glow); }
  .demo p { color: var(--muted); line-height: 1.75; font-size: 0.9rem; }

  .badge {
    display: inline-block;
    margin-top: 1.5rem;
    padding: 0.3rem 0.85rem;
    background: rgba(0,212,255,0.07);
    border: 1px solid rgba(0,212,255,0.25);
    border-radius: 100px;
    font-size: 0.7rem;
    color: var(--accent);
    letter-spacing: 0.12em;
    font-family: 'Space Mono', monospace;
    text-transform: uppercase;
  }

/* blue screen */

  .setup-info {
          background: #e8f4fd;
          padding: 20px;
          border-radius: 8px;
          margin-bottom: 20px;
          border-left: 4px solid #0084ff;
      }
      .setup-info h3 {
          margin-top: 0;
          color: #0066cc;
      }
      .setup-info ol {
          margin: 10px 0;
          padding-left: 20px;
          line-height: 1.8;
      }
      .setup-info a {
          color: #0066cc;
          font-weight: 500;
      }
      .setup-info code {
          background: #fff;
          padding: 3px 8px;
          border-radius: 4px;
          border: 1px solid #ddd;
      }

/* end of blue screen */

/* white border */


.feature-card {

     background: white;
     padding: 18px;

     border-radius: 12px;
     box-shadow: 0 4px 6px rgba(0,0,0,0.1);
     transition: transform 0.3s ease, box-shadow 0.3s ease;
     width: calc(100% - 50px);
     width: 100%;

     margin: 0;


 }

 .feature-card:hover {
     transform: translateY(-5px);
     box-shadow: 0 8px 12px rgba(0,0,0,0.15);
 }

 .feature-card h3 {
     color: #667eea;
     margin-bottom: 0.5rem;
     font-size: clamp(1.25rem, 3vw, 1.5rem);
 }

 .feature-card p {
     color: #666;
     font-size: clamp(0.9rem, 2vw, 1rem);
 }

 .container {
   max-width: 1200px;
   margin: 30px auto 0;
   padding: 20px;
   flex: 1;
 }
/* end white border */


    /* Content section */
    .content {
        padding: 0;
        max-width: 100%;
        margin: 0;
    }

    .content-inner {
        padding: clamp(1.5rem, 5vw, 4rem);
        padding-bottom: 0;
        max-width: 1200px;
        margin: 0 auto;
    }

    .content h1 {
        font-size: clamp(1.75rem, 5vw, 3rem);
        margin-bottom: 1rem;
        color: #333;
    }

    .content p {
        font-size: clamp(1rem, 2vw, 1.125rem);
        line-height: 1.6;
        color: #666;
        margin-bottom: 0;
    }


/* ═══════════════════════════════════════════════════════════════════════
     FOOTER
     ════════════════════════════════════════════════════════════════════ */
  footer {

    background: var(--surface);


    border-top: 2px solid var(--accent);
    padding: 10px;
    text-align: center;
    color: var(--muted);

  }

  footer a {
    color: var(--accent);
    text-decoration: none;
  }

  footer a:hover {
    text-decoration: underline;
  }

/* buttons */

  .buttons {
  font: bold 17px Arial;
  text-decoration: none;
  background-color: #EEEEEE;
  color: #333333;
  padding: 2px 6px 2px 6px;
  border-top: 1px solid #CCCCCC;
  border-right: 1px solid #333333;
  border-bottom: 1px solid #333333;
  border-left: 1px solid #CCCCCC;

  border: 2px solid black;
  border-radius: 12px;


}