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

    @keyframes bgshift {
      0%   { background-position: 0% 50%; }
      50%  { background-position: 100% 50%; }
      100% { background-position: 0% 50%; }
    }

    html, body {
      width: 100%; height: 100%;
      background: linear-gradient(-45deg, #060606, #0a0014, #000d1a, #06000f, #060606, #000a12);
      background-size: 400% 400%;
      animation: bgshift 18s ease infinite;
      color: #bbb;
      font-family: 'Georgia', serif;
      overflow: hidden;
      cursor: default;
      user-select: none;
    }

    /* ── CANVAS PARTICULES ── */
    canvas {
      position: fixed;
      inset: 0;
      z-index: 0;
      opacity: 0.6;
    }

    /* ── CENTRE ── */
    .stage {
      position: fixed;
      inset: 0;
      z-index: 10;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 40px 24px;
    }

    /* signal pulsant */
    .signal {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: #2a2a2a;
      margin-bottom: 52px;
      position: relative;
    }
    .signal::before, .signal::after {
      content: '';
      position: absolute;
      inset: -8px;
      border-radius: 50%;
      border: 1px solid #1e1e1e;
      animation: ripple 2.4s ease-out infinite;
    }
    .signal::after { animation-delay: 1.2s; }
    @keyframes ripple {
      0%   { transform: scale(0.5); opacity: 0.6; }
      100% { transform: scale(2.8); opacity: 0; }
    }

    /* message */
    #msg {
      font-size: clamp(15px, 2.2vw, 21px);
      line-height: 1.8;
      color: #999;
      text-align: center;
      max-width: 520px;
      min-height: 90px;
      letter-spacing: 0.02em;
      position: relative;
    }
    #msg-text {
      display: inline;
    }
    .caret {
      display: inline-block;
      width: 1px;
      height: 0.9em;
      background: #444;
      vertical-align: middle;
      margin-left: 2px;
      animation: blink 0.9s step-end infinite;
    }
    @keyframes blink {
      0%, 100% { opacity: 1; }
      50%       { opacity: 0; }
    }

    /* glitch sur certains chars */
    .glitch-char {
      display: inline-block;
      animation: glitch 0.08s steps(1) forwards;
    }
    @keyframes glitch {
      0%   { transform: translateX(-1px); color: #555; }
      33%  { transform: translateX(1px);  color: #777; }
      66%  { transform: translateX(0);    color: #999; }
      100% { transform: translateX(0);    color: inherit; }
    }

    /* footer cryptique */
    .footer {
      position: fixed;
      bottom: 28px;
      left: 0; right: 0;
      display: flex;
      justify-content: space-between;
      padding: 0 32px;
      font-size: 10px;
      letter-spacing: 2.5px;
      color: #1e1e1e;
      font-family: monospace;
      z-index: 10;
    }
    .footer span { transition: color 0.4s; }
    .footer span:hover { color: #333; }

    /* easter egg */
    #secret {
      position: fixed;
      inset: 0;
      background: #060606;
      z-index: 100;
      display: flex;
      align-items: center;
      justify-content: center;
      opacity: 0;
      pointer-events: none;
      transition: opacity 1s ease;
    }
    #secret.show {
      opacity: 1;
      pointer-events: all;
    }
    #secret p {
      font-size: 13px;
      color: #333;
      letter-spacing: 4px;
      text-align: center;
      line-height: 2;
      font-family: monospace;
    }
    #secret p span { color: #555; }

    /* grain */
    body::after {
      content: '';
      position: fixed;
      inset: 0;
      background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E");
      pointer-events: none;
      z-index: 5;
      opacity: 0.4;
      mix-blend-mode: overlay;
    }