:root {
      --primary-color: #ffffff;
      --accent-color: #fe5005;
      --board-max-width: 800px;
      --blur-bg: rgba(255,255,255,0.2);
      --blur-filter: blur(10px);
      --radius: 12px;
      --input-shadow: rgba(0,0,0,0.2);
    }
    * { box-sizing: border-box; margin:0; padding:0; }
    body {
      font-family: 'Poppins', sans-serif;
      color: var(--primary-color);
      background: #000;
      overflow-x: hidden;
      
    }

    #bg-video {
      position: fixed;
      top:0; left:0;
      width:100vw; height:100vh;
      object-fit: cover;
      z-index:-1;
      filter: brightness(50%);
    }
    header {
      color: white;
      text-align: center;
      padding: 1rem;
      font-size: 2rem;
      font-weight: 700;
      text-shadow: 0 0 10px rgba(0,0,0,0.5);
    }
    .controls {
      display:flex;
      flex-wrap:wrap;
      gap:1rem;
      justify-content: space-between;
      backdrop-filter: var(--blur-filter);
      background: var(--blur-bg);
      padding:1rem;
      border-radius: var(--radius);
      margin:0rem auto;
      max-width: var(--board-max-width);
      align-items: center;
      border: 1px solid rgba(255,255,255,0.4);
    }
    .controls img.logo {
      height:40px;
      border-radius:4px;
    }
    .controls .button-group {
      display:flex;
      gap:0.5rem;
      flex-wrap:wrap;
    }
    .controls button,
    .controls a.link-btn {
      display:inline-flex;
      align-items:center;
      gap:0.5rem;
      padding:0.5rem 5.5rem;
      background: var(--accent-color);
      color:#fff;
      border:none;
      border-radius: var(--radius);
      cursor:pointer;
      font-weight:500;
      text-decoration:none;
      transition:transform 0.2s;
    }
    .controls button:hover,
    .controls a.link-btn:hover {
      transform: translateY(-2px);
    }
    .controls label,
    .controls input[type="text"] {
      font-size:1rem;
    }
    #array-input {
      flex:1;
      padding:0.5rem;
      border:none;
      border-radius:8px;
      box-shadow:0 4px 15px var(--input-shadow);
      font-size:1rem;
    }
    #blurb {
  text-align: center;
  margin: auto;
  margin-left: 1rem;
  height:170px;
  width: 470px; /* Fixed width */
  max-width: var(--board-max-width); /* Optional, allows responsiveness */
  box-sizing: border-box;
  overflow: auto; /* Enables scroll if content overflows */
  word-wrap: break-word; /* Ensures long words wrap */
  backdrop-filter: var(--blur-filter);
  background: var(--blur-bg);
  border-radius: var(--radius);
  padding: 2.1rem;
  border: 1px solid rgba(255, 255, 255, 0.4);
}
#array-visual {
	display: block;
  margin: 1em;
}
    
#visual-title { font-size:1rem; margin-bottom:0.5rem; }
#binary-tree,
#array-visual {
  display:flex;
  justify-content:center;
  margin:1rem auto;
  max-width:90%;
}
    .linkedin-button {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background-color: #0a66c2;
  color: white;
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
  transition: background-color 0.3s;
  align-content: center;
}

.linkedin-button:hover {
  background-color: #004182;
}
 .controls-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  width: 100%;
  margin: 0.5rem 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: #000;
  color: #fff;
  border: none;
  border-radius: 0.5rem;
  cursor: pointer;
  font-family: 'Poppins', sans-serif;
  font-weight: 500;
  font-size: 1rem;
  transition: transform 0.2s;
}

.github-btn {
  background: #000;
}

.gfg-btn {
  background: #2f8d46;
}

.gfg-icon {
  height: 20px;
  width: 20px;
  filter: invert(100%);
}

/* ✅ Mobile Responsive Styling 
@media (max-width: 768px) {	
  .controls {
    flex-direction: column;
    align-items: center;
    padding: 1rem;
  }

  .btn {
    font-size: 0.85rem;
    padding: 0.4rem 0.8rem;
  }

  #array-input {
    width: 100%;
    margin-top: 0.5rem;
    font-size: 0.9rem;
  }

  label[for="array-input"] {
    text-align: center;
    width: 100%;
    font-size: 0.9rem;
  }

  .controls-buttons {
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
  }
}
 */
#Iterations {
      width: 300px;
      max-height: var(--board-max-size);
      overflow-y: auto;
      backdrop-filter: var(--blur-filter);
      background: var(--blur-bg);
      padding: 1rem;
      border-radius: var(--board-radius);
      border: 1px solid rgba(255,255,255,0.4);
      background: var(--blur-bg);
      border-radius: var(--radius);
    }

    
rect:hover, circle:hover, text.circle:hover, text.rect:hover {
  cursor: pointer;
}

.subtext {
  font-size: .8em;
  font-weight: 400;
}
.svg-container {
  display: inline-block;
  position: relative;
  width: 100%;
  padding-bottom: 100%;
  vertical-align: top;
  overflow: hidden;
}

.svg-content-responsive {
  display: inline-block;
  position: absolute;
  top: 10px;
  left: 0;
}
@media (max-width: 768px) {
	#binary-tree,
    #array-visual {
      display: block !important;
      width: 100vw !important;
      margin: 1rem 0 !important;
      padding: 0 !important;
      overflow-x: auto;
    }

    #binary-tree svg,
    #array-visual svg {
      width: 100% !important;
      height: auto !important;
      display: block !important;
      max-width: 100% !important;
    }
	
	
	
  /* Header */
  header {
    font-size: 1.4rem;
    padding: 1rem 0.5rem;
    text-align: center;
  }

  /* Controls section */
  .controls {
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem;
  }

  .controls img.logo {
    height: 30px;
  }

  .controls button,
  .controls a.link-btn {
    width: 90%;
    font-size: 0.9rem;
    padding: 0.6rem 0.75rem;
    justify-content: center;
  }

  #array-input {
    width: 100%;
    font-size: 0.9rem;
    padding: 0.5rem;
  }

  label[for="array-input"] {
    width: 100%;
    text-align: left;
    font-size: 0.95rem;
  }

  /* Stack Iterations and Blurb */
  #Iterations,
  #blurb {
    min-width: unset !important;
    width: 90% !important;
    max-width: 100%;
    margin: 0 auto;
    text-align: center;
  }

  #Iterations div {
    flex-direction: column;
    align-items: center;
  }

  #Iterations img {
    height: 80px;
    padding: 0.5rem;
  }

  #Iterations h2 {
    font-size: 1.2rem;
    margin: 0.5rem 0;
  }

  #Iterations a {
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
  }

  #blurb {
    padding: 1rem;
    font-size: 0.95rem;
    height: auto;
  }

  #visual-title,
  #instructions {
    font-size: 1rem;
  }

  /* Tree & Array visuals */
  #binary-tree,
  #array-visual {
    max-width: 100%;
    overflow-x: auto;
    padding: 0 1rem;
  }

  svg {
    width: 100% !important;
    height: auto !important;
  }

  /* General text and spacing */
  body {
    font-size: 14px;
  }

  .linkedin-button {
    justify-content: center;
    padding: 0.5rem;
    font-size: 0.9rem;
  }

  .controls .button-group {
    flex-wrap: wrap;
    justify-content: center;
  }

  .controls button {
    margin: 0.25rem 0;
  }
}

svg {
  max-width: 100%;
  height: auto;
  overflow-x: auto;
  display: block;
}