/* Reset en body */
* {
    box-sizing: border-box;
    margin: 0; padding: 0;
  }
  
  body, html {
    height: 100%;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow: hidden;
    background: #111; /* bijna zwart, licht zodat wit rook goed zichtbaar is */
    color: #111;
    position: relative;
  }
  
  /* Canvas vult scherm */
  #smoke-canvas {
    position: fixed;
    top: 0; left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: none;
  }
  
  /* Login box */
  .login-container {
    position: relative;
    z-index: 1;
    width: 320px;
    margin: 12vh auto;
    background: rgba(255 255 255 / 0.9);
    padding: 30px 25px;
    border-radius: 12px;
    box-shadow: 0 0 20px rgba(0,0,0,0.2);
    text-align: center;
    color: #111;
  }
  
  /* Titels */
  .login-container h2 {
    margin-bottom: 20px;
    font-weight: 700;
    color: #222;
    text-shadow: none;
  }
  
  /* Inputs */
  input {
    display: block;
    width: 100%;
    margin-bottom: 15px;
    padding: 12px 15px;
    border: 2px solid #ccc;
    border-radius: 6px;
    font-size: 16px;
    background: #f9f9f9;
    color: #111;
    transition: border-color 0.3s ease;
  }
  
  input::placeholder {
    color: #aaa;
  }
  
  input:focus {
    border-color: #666;
    outline: none;
    background: #fff;
  }
  
  /* Button */
  button {
    width: 100%;
    padding: 12px;
    font-size: 18px;
    font-weight: 600;
    border: none;
    border-radius: 6px;
    background: #0073e6;
    color: white;
    cursor: pointer;
    transition: background-color 0.3s ease;
  }
  
  button:hover {
    background: #3399ff;
  }
  
  /* Foutmelding */
  #error-msg {
    margin-top: 10px;
    font-weight: 600;
    color: #cc3333;
    display: none;
  }
  
  #error-msg.visible {
    display: block;
  }