:root {
      /* === 🎨 Personnalisation facile === */
      --timeline-color: #0bcc99;          /* Couleur principale de progression */
      --timeline-gradient: linear-gradient(90deg, #00b894, #00b893b9);
      --step-active-color: #0bcc99;       /* Couleur des étapes actives */
      --step-complete-color: #00b894;     /* Couleur des étapes complètes */
      --timeline-bg: #f5f7fa;             /* Fond de la page */
      --text-color: #333;
    }

    body {
      background: var(--timeline-bg);
      font-family: 'Poppins', sans-serif;
      color: var(--text-color);
      overflow-x: hidden;
    }
    .cursor-pointer {
      cursor: pointer;
    }

    /* === TIMELINE PRINCIPALE === */
    .timeline {
      position: relative;
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      margin: 50px auto;
      padding: 30px;
      max-width: 1100px;
      flex-wrap: wrap;
    }

    .timeline::before {
      content: "";
      position: absolute;
      top: 40px;
      left: 10%;
      right: 10%;
      height: 4px;
      background: var(--timeline-gradient);
      border-radius: 10px;
      z-index: 0;
      transition: width 1s ease-in-out;
    }

    /* === ÉTAPES === */
    .timeline-step {
      position: relative;
      text-align: center;
      width: 20%;
      min-width: 160px;
      z-index: 2;
      margin-bottom: 60px;
      cursor: pointer;
    }

    .timeline-step .circle {
      width: 45px;
      height: 45px;
      margin: 0 auto;
      background: #fff;
      border: 5px solid var(--timeline-color);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      color: var(--timeline-color);
      box-shadow: 0 0 10px rgba(0, 123, 255, 0.3);
      transition: all 0.4s ease;
    }

    .timeline-step.active .circle {
      background: var(--step-active-color);
      color: #fff;
      transform: scale(1.1);
    }

    .timeline-step.complete .circle {
      background: var(--step-complete-color);
      color: #fff;
      border-color: var(--step-complete-color);
    }

    .timeline-step h6 {
      margin-top: 12px;
      font-weight: 600;
      font-size: 15px;
    }

    .comment-box {
      background: #ffffff;
      border: 1px solid #dee2e6;
      border-radius: 10px;
      padding: 12px;
      margin-top: 18px;
      font-size: 14px;
      text-align: left;
      color: #333;
      box-shadow: 0px 2px 8px rgba(0, 0, 0, 0.05);
      transition: transform 0.3s;
    }

    .timeline-step:hover .comment-box {
      transform: translateY(-5px);
    }

    /* === RESPONSIVE === */
    @media (max-width: 768px) {
      .timeline {
        flex-direction: column;
        align-items: center;
      }

      .timeline::before {
        width: 4px;
        height: 85%;
        left: 50%;
        top: 8%;
        background: var(--timeline-gradient);
      }

      .timeline-step {
        width: 100%;
        text-align: center;
      }

      .timeline-step .circle {
        margin: 0 auto 10px;
      }
    }

    /* === Animation de progression automatique === */
    @keyframes progressLine {
      0% { width: 0%; }
      100% { width: 100%; }
    }

    .animate-progress::before {
      animation: progressLine 3s linear forwards;
    }