/* Chat bubble preview animation */
    .chat-preview-wrap {
      background: var(--bg-light);
      border: 1.5px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 24px;
      position: relative;
      overflow: hidden;
    }
    .chat-bubble {
      max-width: 80%;
      padding: 10px 14px;
      border-radius: 14px;
      font-size: 13.5px;
      line-height: 1.5;
      margin-bottom: 10px;
      position: relative;
      animation: bubbleIn 0.4s ease;
    }
    @keyframes bubbleIn {
      from { opacity:0; transform:translateY(10px); }
      to   { opacity:1; transform:translateY(0); }
    }
    .chat-bubble.visitor {
      background: #e8eef7;
      color: var(--text-dark);
      margin-left: auto;
      border-bottom-right-radius: 4px;
    }
    .chat-bubble.agent {
      background: var(--primary);
      color: #fff;
      margin-right: auto;
      border-bottom-left-radius: 4px;
    }
    .chat-bubble.agent::before {
      content: 'Support';
      display: block;
      font-size: 10px;
      font-weight: 700;
      color: rgba(255,255,255,.65);
      margin-bottom: 3px;
    }
    .chat-bubble.visitor::before {
      content: 'Visitor';
      display: block;
      font-size: 10px;
      font-weight: 700;
      color: var(--text-muted);
      margin-bottom: 3px;
      text-align: right;
    }
    .chat-time { font-size: 10px; color: var(--text-muted); text-align: right; margin-top: 3px; }
    .chat-online-dot {
      width: 9px; height: 9px; border-radius: 50%;
      background: #22c55e;
      display: inline-block;
      animation: pulse 1.8s infinite;
    }

    /* Response time gauge */
    .response-gauge {
      background: #fff;
      border: 1.5px solid var(--border);
      border-radius: var(--radius-md);
      padding: 22px 24px;
      height: 100%;
    }
    .gauge-label { font-size: 12px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 10px; }
    .gauge-value { font-family: var(--font-heading); font-size: 38px; font-weight: 700; color: var(--primary); line-height: 1; }
    .gauge-value span { font-size: 18px; color: var(--accent); }
    .gauge-bar { height: 6px; background: var(--bg-light); border-radius: 3px; margin: 10px 0; overflow: hidden; }
    .gauge-fill { height: 100%; border-radius: 3px; background: linear-gradient(90deg, var(--primary), var(--accent)); }
    .gauge-desc { font-size: 12px; color: var(--text-muted); }

    /* Use case cards — different layout for this page */
    .usecase-card {
      background: #fff;
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      border: 1.5px solid var(--border);
      height: 100%;
      position: relative;
      overflow: hidden;
      transition: all var(--transition);
    }
    .usecase-card::after {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0;
      height: 3px;
    }
    .usecase-card.uc1::after { background: linear-gradient(90deg, var(--primary), var(--primary-light)); }
    .usecase-card.uc2::after { background: linear-gradient(90deg, var(--accent), var(--accent-light)); }
    .usecase-card.uc3::after { background: linear-gradient(90deg, var(--secondary), #0ea5e9); }
    .usecase-card.uc4::after { background: linear-gradient(90deg, #7c3aed, #2563eb); }
    .usecase-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: transparent; }
    .usecase-num {
      font-family: var(--font-heading);
      font-size: 48px; font-weight: 700;
      color: var(--bg-lighter);
      line-height: 1;
      margin-bottom: 10px;
    }
    .usecase-card h5 { font-size: 17px; margin-bottom: 10px; }
    .usecase-card p { font-size: 13.5px; color: var(--text-muted); line-height: 1.65; }

    /* Platform logo strip */
    .platform-logos {
      display: flex; flex-wrap: wrap; gap: 12px; justify-content: center;
    }
    .platform-logo {
      display: inline-flex; align-items: center; gap: 8px;
      background: #fff; border: 1.5px solid var(--border);
      border-radius: var(--radius-sm); padding: 10px 18px;
      font-size: 13.5px; font-weight: 700; color: var(--text-dark);
      transition: all var(--transition);
    }
    .platform-logo:hover { border-color: var(--primary); color: var(--primary); box-shadow: var(--shadow-sm); }
    .platform-logo i { font-size: 18px; color: var(--accent); }

    /* Chat conversation types pills */
    .conv-type {
      display: inline-flex; align-items: center; gap: 7px;
      background: var(--bg-light); border: 1px solid var(--border);
      border-radius: 50px; padding: 7px 16px;
      font-size: 13px; font-weight: 600; color: var(--text-dark);
    }
    .conv-type i { color: var(--accent); }