.zwc-calendar-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; padding: 15px; background: #f8f9fa; border-radius: 8px; }
    .zwc-calendar-header h2 { margin: 0; font-size: 24px; }
    .zwc-nav-btn { padding: 8px 16px; background: #0073aa; color: white; border: none; border-radius: 4px; cursor: pointer; font-size: 14px; }
    .zwc-nav-btn:hover { background: #005177; }
    .zwc-calendar-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 1px; background: #ddd; border: 1px solid #ddd; }
    .zwc-day-header { background: #2c3e50; color: white; padding: 10px; text-align: center; font-weight: bold; }
    #zwc-calendar-days { display: grid; grid-template-columns: repeat(7, 1fr); gap: 1px; background: #ddd; border: 1px solid #ddd; border-top: none; }
    .zwc-day { background: white; min-height: 110px; padding: 8px; position: relative; }
    .zwc-day.other-month { background: #f8f9fa; color: #999; }
    .zwc-webinar { background: #e7f3ff; border-left: 4px solid #0073aa; color: #333; padding: 8px; margin: 5px 0; border-radius: 4px; font-size: 12px; text-decoration: none; display: block; transition: 0.2s; box-shadow: 0 1px 3px rgba(0,0,0,0.1); }
    .zwc-webinar:hover { background: #d0e8ff; border-left-color: #005177; text-decoration: none; color: #000; }
    .zwc-badge { display: inline-block; background: #28a745; color: white; font-size: 9px; padding: 2px 5px; border-radius: 3px; margin-bottom: 4px; text-transform: uppercase; font-weight: bold; }
    .zwc-webinar-time { font-weight: bold; color: #0073aa; font-size: 10px; margin-bottom: 2px; }
    .zwc-loading { text-align: center; padding: 40px; font-size: 18px; color: #666; }
    .zwc-error { padding: 15px; background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; border-radius: 4px; margin: 20px 0; }